History Characters / ShimejiSimulation

[[/index]]

[[index]]

[[caption-width-right:1000:The characters. [[note]][[GadgeteerGenius Big Sis]], [[PhysicalGod The Gardener]], [[AloofDarkHairedGirl Shijima]], [[ThePollyanna Majime]], [[{{Bookworm}} Yomikawa]], [[ShrinkingViolet Sumida]], [[ApatheticTeacher Mogawa-sensei]][[/note]]]]

[[WMG:[[center: [-''Manga/ShimejiSimulation'' '''Character Index'''\\
[[Characters/ShimejiSimulationMainCharacters Main Characters]] ([[Characters/ShimejiSimulationShijimaTsukishima Shijima Tsukishima]]) | [[Characters/ShimejiSimulationWestYomogiHighSchool West Yomogi High School]] | [[Characters/ShimejiSimulationOtherCharacters Other Characters]] | [[Characters/ShimejiSimulationSpoilerCharacters Spoiler Characters]]-]]]]]
!!Due to the [[SpoileredRotten sheer amount of spoilers]] the [[Manga/ShimejiSimulation work]] is known for, every single examples [[Administrivia/SpoilersOff will be unmarked]] by default!

The characters of ''Manga/ShimejiSimulation''.

[[foldercontrol]]

!!Main
[[folder:Shijima Tsukishima]]
!!Shijima "Shimeji" Tsukishima
!!!Voiced by: Creator/NaomiOzora (VOMIC)
!!!'''First Appearance:''' Chapter 1

->''Plenty of things happened when I was in my first year of middle school. Things that made me hate it. Ever since then, I shut myself inside my closet for two years. Two years later, a thought occurred to me that it's about time I leave.''
-->--'''Shijima'''

[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/shijima_tsukishima_9.png]]
[[caption-width-right:250:[[labelnote:''Click to see Shijima with three mushrooms on her head.'']]https://static.tvtropes.org/pmwiki/pub/images/shijima_tsukishima_5.png[[/labelnote]]]]
The main protagonist of the story. A 15-year-old (later 16-year-old) former social recluse and an orphan along with her sister, Shijima later leaves out of her closet after two years, as she starts her term as a first-year high-school student. She lives with her big sister at the apartment complex (danchis) in the middle of nowhere in West Yomogi.\\
\\
After hiding herself inside a closet, she is later seen with two mushrooms sprouting on her head. While she starts out as a person with an emotional baggage to begin with, Shijima's life later turns upside down for the good when she befriends Majime.\\
\\
Over the course of the story, Shijima gets involved in Majime's antics, as well as others including her sister and the members of Hole-Digging Club including Mogawa and Sumida.\\


----

* For her character page, go [[Characters/ShimejiSimulationShijimaTsukishima here]] [[WalkingSpoiler but be warned of heavy spoilers.]]
[[/index]]
[[/folder]]
[[folder:Majime Yamashita]]
!WARNING: Majime, post-Chapter 46, is a case of a major WalkingSpoiler as her transition to godhood is integral to the final, tail end of ''Shimeji Simulation''. Anything about her tropes will be considered [[Administrivia/SpoilersOff unmarked spoilers]], so be warned!
!!Majime Yamashita
!!!Voiced by: Creator/YumiriHanamori (VOMIC)
!!!'''First Appearance:''' Chapter 1
-> ''You're not gonna make any friends if you read books all the time, you know.''
-->--'''Majime to Shijima'''

[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/majime_yamashita_2.png]]
[[caption-width-right:250:[[labelnote:''Click to see Majime as a goddess.'']]https://static.tvtropes.org/pmwiki/pub/images/majime_goddess.png]][[/labelnote]]
A 15-year-old (later 16-year-old) first-year high school student who is Shijima's rather boisterous friend, serving as the deuteragonist of the story. She has a half-fried egg sitting on top of her head. She lives with her mother and her absent father. In later chapters, she becomes the God of her own world.
----
* AllegoricalCharacter: {{Deconstructed}}. Majime, as a deity in her new world, is the personification of idealistic friendship, whose idea is to create more friends and put them into the forms of unity that she pursues with, similarly as to how she befriended Shijima in the first place. But her goal of friendship comes with consequences when the countries within her new world, as shown within the "Book of Eggplant" page in Chapter 46, came into a war. This resulted in her unleashing her wrath against the warring factions, leading her to be self-exiled as wishing for too many friends always comes with a price to pay, while leaving promises to her creations.
* TheAntiNihilist: She is unwilling to see others who think life is considered meaningless. It later becomes the case where she was able to ''finally'' befriend Shijima, who started off as a nihilistic IceQueen, due to her [[DarkAndTroubledPast tragedy]].
* BespectacledCutie: She wears huge red glasses and is a cute, cheerful and energetic girl.
* BestFriend: To Shijima, right after the events of Chapter 10.
* TheBusCameBack: After her last physical appearance in Chapter 43, Majime makes her appearance again in the final chapter reuniting with Shijima.
* CallBack: A shot in Chapter 29's first page has Majime eating a corn in the Dream World. Chapter 46's "The Book of Corn" blatantly shows Majime in one scene also eating a corn, with her subjects asking how they want to be the same as her.
* ClingyJealousGirl: Exhibits this at one point in the story, when Majime's mother attempted to touch Shijima, going so far with Majime pouting. Of course, with the courtesy of Shijima's snide remarking.
--> '''Majime:''' Geez! ''She's'' mine!
--> '''Shijima:''' As if.
* {{Cloudcuckoolander}}: Majime seemingly pulls this off in some chapters of the manga, given her rather strange personality. Examples include her booping Shijima's mushrooms for "cuteness", as means to befriend her, without knowing the fact that Shijima ''doesn't'' like it to be touched. Her attempts of befriending Shijima often leads to annoyance, much to Shijima's dismay.
* ContrastingSequelMainCharacter: To Yuuri of ''Manga/GirlsLastTour''.
** Yuuri, along with her friend Chito, is a survivor of a CrapsackWorld in the future, who ventures with her through the empty world. Majime is an ordinary teenage girl living in West Yomogi, a seemingly idyllic town, who is a goofball just like Yuuri.
** While Yuuri has been orphaned since she was born from her unknown parents in a town under a CivilWar, Majime lives with a noticeably stable family, including her mother and her father.
** Both are odd-kitter goofballs and serving as TheAntiNihilist {{Foil}} to the respective main protagonists. Whereas Yuuri's optimism and cheerfulness often excites the rather grey and bleak atmosphere surrounding her and Chito (often to varying results), Majime uses both to [[DefrostingIceQueen defrost]] Shijima's icy and distant personality in an attempt to make her as her first best friend.
** Both also lived a much more prolonged life. Though unlike Yuuri who has been dead and is essentially a soul for a thousand years, Majime is a former-human-turned-immortal who is still alive, after ascending to godhood.
* CrouchingMoronHiddenBadass: Exemplified in Chapter 10. While Majime is often known to be a comic relief teenage girl who is the comedic {{Foil}} to the quiet, shy Shijima, she is considered a BigDamnHero within that very chapter, when she saved an injured Shijima from a giant crab within the Dream World by riding a giant Yoshika pencil and slamming it onto the creature, thus defeating it. In addition, she also used a ''giant'' frying pan from the skies to knock it out completely.
* CrystalDragonJesus: Majime, as a Goddess, is loosely based on the Greek Goddess of Friendship Philotes, in line with the former's goal of making a world where everyone becomes a friend to one another as its religion. She is currently worshipped by the people of her world and her people calls her as "friend" or even "Majime-chan" rather than a Goddess. Also taken to some ridiculous levels when the Chiho tribe members call her as their "most important friend" in front of her statue. And smaller statues of her are also seen scattered across various places in her own world.
* ADayInTheLimelight: Chapter 46 solely focuses on her becoming a PhysicalGod.
* DeityOfHumanOrigin: During the first 45 chapters of the manga, Majime is merely an ordinary human before she gains the powers of RealityWarping during the events of Chapters 30 and 40. Enter Chapter 46, where she later becomes the god of her own world, where she created her world from scratch, comprising of {{Talking Animal}}s and plants she materialises. 1400 years later, the people of her world, with the Chiho tribe for example, worship her for her natural approach to ensuring camaraderie amongst the people of other countries, though it was not without a scene where a war broke out between countries that forced her to unleash a BoltOfDivineRetribution towards the soldiers, leaving her to be on hiding for millennia.
* {{Determinator}}: Despite Shijma's constant refusal of friendship, Majime is determined to have her as her closest friend, even if it means to annoy her. She becomes successful with that goal, however, near the end of Chapter 10, thereby making Shijima as HeterosexualLifePartners.
* EpicFail:
** Her attempts to show Shijima the meaning of friendship only failed, when Ayaka told her not to chime from out of nowhere.
** When Majime tried to "protect" Shijima from being touched by the former's mother, or rather attempted to do so, Shijima has none of it, as she only remarks with an "[[DeadpanSnarker as if]]" retort.
** PlayedForDrama in Chapter 46 when Majime attempts to stop her created subjects from starting their own war against friendship, leading to her firing a flurry of projectiles onto them as a result. Her disastrous efforts to stop the problem led her to be on exile.
* TheExile: Majime has been in exile for over a millennia after her disastrous attempts to resolve the conflict diplomatically, which escalated into a full-scale war between countries.
* ExpositoryHairstyleChange: When she started off as a normal teenage girl, her hair is shoulder-length. After becoming a PhysicalGod, her hair reaches up to her back.
* {{Foil}}: To Shijima. Unlike Shijima who is black-haired and is a PerpetualFrowner who seldom smiles and is mostly aloof and soft-spoken, Majime is blonde-haired and is a PerpetualSmiler who is bright and optimistic. She's also an idealist but a DumbBlonde, in contrast to Shijima who is a pessimist but a smart girl.
* IronicName: Her name in English means serious and diligent, but she acts contrary to what the name suggests. Hilariously [[LampshadeHanging lamphshaded]] by Shijima.
--> '''Majime:''' I'm [[BlatantLies totally diligent]]!
--> '''Shijima:''' ''Only'' your glasses look the part.
* TheMaker: She becomes this once she ascends into becoming the PhysicalGod of her new world that she created in the void using her own toys to create a population of sentient LivingToys.
* TheMcCoy: To Shijima's [[TheKirk Kirk]] and Big Sis' [[TheSpock Spock]]. Out of the three, she's the most emotionally driven, being a wide-eyed optimist and an [[TheAntiNihilist anti-nihilist]] who wants to be friends with each other.
* MyGodWhatHaveIDone: While she only used her BoltOfDivineRetribution (a la her own tears) to stop the war that her subjects started, she felt remorseful over it, as she only wanted to meet everyone and especially Shijima, leading to her hiding for a millennia.
* NoSenseOfPersonalSpace: She does this for a few times, as a part of her personality as ThePollyanna. The most obvious example is her attempts to befriend Shijima, who at the time still had traces of her reclusive past, despite Shijima not being initially in the mood for friendship.
* PerpetualSmiler: In contrast to Shijima's PerpetualFrowner, Majime smiles for most of the time, owing to her optimistic nature and her attempts to make friends with one another. Until Chapter 46 where she foregoes it when reality hits her hard after her attempts to spread her religion of friendship failed horribly when countries caused war against each other over it.
* PhysicalGod: After settling into what appeared to be a white, empty vast of nothingness, Majime later becomes a deity wielding a staff, which gave her the ability to create anything based on her imagination. 1400 years later at a FlashForward scene, Majime is now the God of this world, but she's revealed to have been missing ''for millennia''. The "Book of Eggplant" in Chapter 46 shows the reason: her attempts of spreading camaraderie went on a downward spiral when countries blindly worshipped Majime and wanted more friends that led to a war, only for Majime to unleash her divine reckoning against the warring factions, ultimately leading to her exile and disappearance.
* ThePollyanna: Majime is known to be boisterous, cheerful, and friendly. However, the latter quality is zigzagged, when she attempts to show Shijima on the importance of friendship, only for her to fail when she attempts to communicate with Ayaka and her other friends.
* PrenatalPossessions: It is heavily implied that the egg that sits on top on her head has been existing since her birth.
* RedOniBlueOni: The red to Shijima's blue. She's much more optimistic and overtly happier than Shijima, being an optimist who easily jokes for most of the time.
* WorshippedForGreatDeeds: Majime in the future is worshipped by being the first friend to them, as well as her plans of spreading camaraderie across other countries. But a few of the Chiho tribe members recounted about the rather unfortunate past of countries vying power to make more friends that resulted in Majime unleashing her anger onto them.
[[/folder]]

[[folder:Ms. Mogawa]]
!!Mogawa-sensei
!!!'''First Appearance:''' Chapter 3
-> ''The [[ApatheticTeacher other teachers]] won't say anything either. Pretty much sure I'm being bullied here.''
-->--'''Mogawa'''

[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/mogawa_sensei_1.png]]
[[caption-width-right:250:Before Chapter 11.]]
[[quoteright:250:[[labelnote: After Chapter 11.]]https://static.tvtropes.org/pmwiki/pub/images/mogawa_sensei_2_6.png]]
[[/labelnote]]
The slovenly art teacher of Shimeji's class and a known alcoholic, who is the curator of the Hole-Digging Club. She also has a quirky obsession with doughnut-shaped sand holes.
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* AdaptationalDyeJob: In Chapter 1's first page, Mogawa's hair is coloured olive-green, whereas in the rest of her appearance it is coloured pink.
* TheAlcoholic: She is a known drinker, as seen in some scenes of the manga, even during school days where she's openly drinking one. At one chapter her fridge in the club's own clubroom ''is full'' of unopened beer cans. It is seldom to see her without a beer can or a wine from her hand.
* AllOfTheOtherReindeer: PlayedForLaughs. Mogawa is pretty much the black sheep of her school's own faculty, as she is mostly ignored by them. Further [[LampshadeHanging lampshaded]], when she was suddenly turned as the advisor of the Hole-Digging Club, a year prior to the story.
--> '''Mogawa:''' When I just started working here last year, they ''suddenly'' pushed this "Hole-Digging Club" onto me. They made me the advisor of this whatever this club even is.
* ApatheticTeacher: She has ''zero'' interest in being a teacher and gets bored easily. In most of the times, she is often seen outside digging holes or lazing right beside their own clubroom, given the fact that she is the curator of the club. She's more focused on being an alcoholic than simply teaching her students or even acting as the club's leader.
* ButtMonkey: Across the faculty, she's often the butt of someone's jokes to the point it reached to a head when the rest of the staff simply shoved her the responsibility to manage an empty, barely managed club.
* TheCynic: Mogawa seems to often drown in depressive thoughts and sometimes [[TheAlcoholic drowns her own sorrows with alcohol]]. Even in school time. She also has a deep apathy towards school clubs, contemplating how it is no different than digging holes.
* ImportantHaircut: Chapter 11 shows that she has cut her hair up to shoulder-length, as it interferes with her hole-digging.
* {{Irony}}: While she's a {{Sleepyhead}} for most of the time, she's still digging holes competently despite the job being heavily concentration-focused.
* LazyBum: Taken to a LogicalExtreme, where Mogawa seldom shows up to the classroom[[note]]In one instance in Chapter 4 she shows up but that is it[[/note]], spending most of her time inside the Hole-Digging Club's clubroom [[ArsonMurderAndJaywalking drinking alcohol, digging holes within school grounds and lazing herself.]]
* TheLeader: Sort of. Despite being the leader of the Hole-Digging Club, she shows zero interest in her own job. Justified, however, when it was just simply given to her by most of the staff, a year ago.
* PerpetualFrowner: She is [[TheCynic a pessimist]], who is mostly seen with a frown to her face. Not ''once'' in her appearance she even smiles at one point and everything about her "smile" is her usual cynic expression.
* SiblingYinYang: The Yin to her younger sister's Yang. While her younger sister is a police officer who is active and always on the forefront to her job, Mogawa-sensei is a LazyBum who has no interest in her job and spends her time as an alcoholic.
* {{Sleepyhead}}: She often looks tired, either from the boredom she goes through or simply she only wants to teach and to run the club until the bell rings. That and being TheAlcoholic also doesn't help her own case. Surprisingly however, that doesn't cause her problems when digging a hole.
* TaremeEyes: Her eyes droop tiredly all the time, given her nature as a {{Sleepyhead}} who is bored of anything.
* ThoseTwoGuys: She is hardly seen without Sumida on her side whom she treats her as a best friend.
[[/folder]]

[[folder:Sumida]]
!!Sumida
!!!'''First Appearance:''' Chapter 11

[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/sumida_0.png]]
A second-year high school student, who is the quiet member of the Hole-Digging Club.
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* AdaptationalDyeJob: In the cover of the manga's first chapter, Sumida is shown to have a dark brown hair, while in the subsequent appearances she is in within the manga, she has green hair. The reason for this change still remains unknown.
* EyesAlwaysClosed: Her eyes are often closed in all of her appearances.
* NoSocialSkills: Sumida's social skills are considered ''crippled'' that even the bonus chapter, Chapter 20.5, explicitly [[LampshadeHanging lampshades]] in her character page that she is ''bad at talking''. Most of the time she spends socialising is within the clubroom with Mogawa, Shijima and Majime.
* ShrinkingViolet: She is often known to be the shiest member of the Hole-Digging Club.
* TalkingWithSigns: She often does this, when she talks to others, given her rather silent nature. Though she [[SubvertedTrope subverts]] this during their long descent down the endless hole, when she starts talking for the first time.
* ThoseTwoGuys: Sumida is often seen with Mogawa on her side.
[[/folder]]

!!Minor
[[folder:Majime's Mother]]
!!Majime's Mother
!!!'''First Appearance:''' Chapter 14
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/majimes_mother.png]]
The unnamed mother of Majime.
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* StrongFamilyResemblance: Majime's appearance is mostly derived from her, including the half-baked egg that sits on top of her head.
* TooMuchAlike: On the receiving end, as Majime inherits most of her personality, thereby they behave almost alike in terms of it.
[[/folder]]

[[folder:Shijima's Friend]]
!!Shijima's Friend
!!!'''First Appearance:''' Chapter 14 (flashback)
-> ''Wow~ Shijima-chan, you're just like a doll!''
-->--'''Shijima's Friend.'''
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/shijimas_friend.png]]
Shijima's unnamed friend during her elementary years.
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* CreepyChild: While certainly cute on the outside, she shows to have a creepy obsession of dressing-up someone with cute clothes, as shown within the flashback scene in Chapter 14, given elementary-schooler Shijima's rather blank expression on her face.
* ForgottenFirstMeeting: She is ''actually'' the first friend of Shijima during her elementary years, before Shijima even befriended Majime. But fast forward in the present, her current status remains unknown.
* GirlyGirl: She wears a cute-looking headband with a bow on it, and is shown to have a hobby of dressing-up others, which was exemplified when she dressed Shijima up like a doll.
* NotSoImaginaryFriend: Turns out that she is real, as it was shown that she is Shijima's ''first'' friend during her elementary years, many years before Shijima even befriended Majime in the present. Unfortunately, it is not known [[WhatHappenedToTheMouse what happened to her]] in the present.

[[/folder]]

[[folder:Mogawa's Younger Sister]]
!!Mogawa's Younger Sister
!!!'''First Appearance:''' Chapter 28 (cameo), Chapter 35 (proper appearance)
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/police_officer_mogawa.png]]
The unnamed younger sister of Mogawa, who works as a police officer.
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* ActionGirl: She is a police officer, a complete contrast to her older sister, being able to initiate an evacuation of civilians within Yomogi Market during the zombie attack within West Yomogi.
* BadassNormal: In a rare instance, where she saved Shijima and Majime during the zombie attack with just her shotgun in the middle of an attack.
* ChekhovsGunman: Starts off as an EarlyBirdCameo, before making a major appearance in Chapter 35, who is helping out various residents during the zombie attack.
* EarlyBirdCameo: She appears firstly in Chapter 28 unnamed, before appearing in Chapter 35 again.
* HairColorSpoiler: Not only her relation as Teacher Mogawa's younger sister is [[SpoiledByTheManual spoiled in Chapter 30.5]], but she also has the ''same'' pink hair as her.
* IdenticallyNamedGroup: Zigzagged, as despite having the same "name" as Teacher Mogawa, she is related to her. It's also PlayedForLaughs when Majime calls her "Ms. Mogawa", mistaking her as the teacher Mogawa.
* IdenticalTwinMistake: One can mistake her as Teacher Mogawa's twin sister, due to how similar she looks to her. {{Subverted}} as she explicitly stated that she is her younger sister.
* LateArrivalSpoiler: Reading Chapter 30.5 is considered a spoiler for Officer Mogawa, as her character page reveals her relation as Teacher Mogawa's younger sister.
* MistakenIdentity: At first due to how similar she looks to Teacher Mogawa, Officer Mogawa was ''initially'' mistaken as Teacher Mogawa by both Shijima and Majime. That is until Officer Mogawa reveals that she is Teacher Mogawa's younger sister, clearing all confusion altogether.
* SameSurnameMeansRelated: Averted. Police Officer Mogawa ''is'' related to the Teacher Mogawa, who are both siblings, in spite of their first names being relatively unknown.
* SiblingYinYang: She is the Yang to her older sister's Yin. Both are public service workers, but they are different in many ways. Unlike her sister who is a LazyBum ApatheticTeacher who spends her time being an alcoholic, the officer Mogawa is an ActionGirl police officer who is on the forefront to her job.
* StrongFamilyResemblance: Despite not being twins, she bears resemblance to her older sister.
[[/folder]]

[[folder:Restaurant Haven Waitress]]
!!Restaurant Haven Waitress
!!!'''First Appearance:''' Chapter 5
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/012_8.png]]

The unnamed waitress of the eponymous restaurant.
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* WingedHumanoid: {{Subverted}} as wings at the back of her is glued to the apron as part of the restaurant's angelic motif.
[[/folder]]

[[folder:The Chiho Tribe]]
!!The Chiho Tribe
!!!'''First Appearance:''' Chapter 46
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/chiho_tribe.png]]
A kingdom mainly composed of talking rabbits who are inhabiting one of the towns within Majime's world. They worship [[CrystalDragonJesus Majime]] as their "most important friend".
----
* CivilizedAnimal: They're intelligent enough at a human level that they have created their own civilization and behave like humans, making them virtually indistinguishable.
* MeaningfulName: The entire tribe is named after Majime's rabbit plushie Chiho.
* TalkingAnimal[=/=]LivingToys: Mostly they're based on one of Majime's rabbit plushies, they later develop human sentience after Majime gave them one and became independent beings of their own right as many years have passed.
* WalkingSpoiler: Their existence is merely a spoiler, since anything about them will spoil the fact that Majime is the one they worship as their own Goddess as she was the one who created them.
[[/folder]]

[[folder:Long-Limbed Woman]]
!!Long-Limbed Woman
!!!'''First Appearance:''' Chapter 48
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/longlimbedwoman.png]]

A mysterious entity that Shijima encountered during her long trip.
----
* TheHermit: She's the only one living in her own world.
* NoodlePeople: She has long arms and legs that she easily towers over Shijima.
* SuspiciouslySimilarSubstitute: She's very similar to Big Sis in terms of personality, being that she's extremely knowledgeable and intellectual regarding the state of their world. Lampshaded by Shijima as to while she's not similar to Sis in appearance, personality-wise she's ''very similar'' to her.
* TimeAbyss: It is unknown how old she is, as she's been existing for a ''very long time'' before West Yomogi and the previous world preceding it.
[[/folder]]

!!One-Shot
[[folder:Mina]]
!!Mina
!!!'''First Appearance:''' Shimeji Simulation One-Shot
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/mina_one_shot.png]]

The main character in the one-shot of the same title, who serves as the main inspiration for Shijima's character.
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* BestFriend: To Yocchan.
* {{Transplant}}: Mina serves as Shijima's inspiration within the main manga, in terms of her personality and her appearance. Part of Shijima's {{Hikikomori}} phase during her two years of middle school is largely due to her friend committing suicide during her first year of middle school.
[[/folder]]

[[folder:Yocchan]]
!!Yocchan
!!!'''First Appearance:''' Shimeji Simulation One-Shot
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/screenshot_20230102_073948.png]]

Mina's former friend that appears in the one-shot.
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* BreakTheCutie: Yocchan was seen having a rather [[BleachedUnderpants risqué romantic relationship]] with Mina, which would be considered cute. That is until she committed suicide, which started her friend's descent into reclusion.
* CurtainsMatchTheWindow: She has brown eyes and hair.
* DrivenToSuicide: While the kind of suicide Yocchan committed is unknown, the second last panel reveals that she committed suicide at night, as shown with the ominous line "That night Yocchan died". This started Mina's life as a recluse.
[[/folder]]

!!Spoiler Characters
----
[-Warning: Every SINGLE one of these character pages are a WalkingSpoiler by default, making it impossible to talk about them without revealing major plot spoilers. Administrivia/YouHaveBeenWarned.-]
----
[[folder:Big Sis]]
!!Shijima's Sister/Big Sis
!!!Voiced by: Creator/MaiFuchigami (VOMIC)
!!!'''First Appearance:''' Chapter 1
->''That's too much of a development for a shut-in, don't you think?''
-->--'''Sis to Shijima'''

[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/big_sis.png]]
An alumna of West Yomogi High School, she is the unnamed, enigmatic older sister of Shijima, who is an inventor of several rather odd machines. She is a university student who later dropped out and is the same age as Yomikawa.

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* AllOfTheOtherReindeer: PlayedForDrama. A part of her past reveals that she was mostly shunned by her other classmates, due to her different hobby.
* AloofBigSister: While she does care about Shijima to some extent, her experiments clearly come first.
* AloofDarkHairedGirl: Big Sis is a black-haired and intelligent [[TheStoic stoic young woman]] who is mostly seen with an aloof expression to her face. She is rather unmoving, rarely showing any emotion at all.
* AmbiguouslyEvil: While not an evil of sorts, her rather bizarre experiments is what gives her the impression of being evil, such as when she sends her younger sister Shijima into the Dream World using the Fish With Names from the Raw Fish Generator for one of her experiments.
* AnimalMotif: Fish is her main motif, which is seen in her experiments, her hair clip, and even the Raw Fish Generator, Flounder Block, Twin-Flounder Motor, and Raw Fish Converter. Not to mention, the Fish With Names, which are used as a key to transport someone into the dream world. Ironically, she is later seen as ''a fish'' by Shijima in Chapter 45, though she now emerges as a soul in the shape of that, due to her being dead.
* AntiHero: Despite her altruistic intentions of pursuing the goal of allowing unrestricted freedom to humans, Big Sis is not without her questionable grey morals, going so far in destroying the fabric of the simulation imposed by the Gardener, which allowed the likes of her rogue clone to cause problems, even putting her into AntiVillain territory, where she was willing to risk the entire world into chaos for her goals. She still cares for her sister, but as shown in the first few chapters their relationship as siblings was mostly transactional. Until Chapter 45 where she finally atoned for her actions and the damage it ultimately caused at the end.
* ArmorPiercingQuestion: She has no qualms in brutally calling out the Gardener by making West Yomogi disappear and later altered completely through her invention.
-->'''Sis''': "I can't...? Says who? The architects of the town? God?"
* TheAtoner: In her dying moments, Big Sis as a fish confesses as to how everything falls apart within the simulation because of her own actions and her clone's actions, before she passes away. As a soul, she later gives her little sister a LastRequest: go back in time during the school festival and reverse everything, but by keeping her distance away from others to not interfere with the changes.
* BatmanGambit: She initiates her plan of uncovering the true nature of the Gardener's hold of the simulation by creating a sea urchin-like device that allows her to peer through the emotions and the thoughts of someone affected by it. While it was successful at the end when she allowed her to have humanity the power of unrestrained freedom through reality warping, such plan soon came consequences when chaos becomes commonplace everywhere. Not helping matters is the clone that she unwittingly created started her own goal to unlock reality furthermore, with the intention of causing even more chaos.
* BeCarefulWhatYouWishFor: Big Sis orchestrated her plans to dismantle West Yomogi to alter the entire world via everyone's imagination, in an attempt to destroy the Gardener's creation for good, in envisioning a free world that fits to her own specifications. While she succeeded in doing so, at least from the Gardener's POV, Big Sis subsequently went to the GoneHorriblyRight territory, after her rogue clone granted humanity the power to change themselves in Chapter 40. What her past actions resulted is her own clone causing a feedback loop that almost plunged the world into chaos.
* BeneathTheMask: Outwardly Big Sis is the epitome of an intelligent stoic. Though one gets a good look beneath that façade through her buried past, as Shijima [[LampshadeHanging lampshades]] it, which showed a completely opposite side of her during her past as a student.
* BestFriend: With the bright-haired Yomikawa. Big Sis is basically the [[MirrorCharacter mirror to her younger sister]] who also has Majime, a bright-haired girl, as her best friend.
* BullyMagnet: In the past, where she was bullied for her own hobbies.
* CollectorOfTheStrange: A specific one, and its fishes. She is a known collector of unusual fishes, known as [[CallARabbitASmeerp Fish With Names]], whom they turned out to be key power sources for Raw Fish Generator and Raw Fish Converter to connect anyone into the dream world, with the fish being produced by the former and converted by the latter.
* ContrastingSequelMainCharacter: To Ishii of ''Manga/GirlsLastTour''.
** Both are scientists who have cool-headed and intelligent personalities, as well as TheStoic and having StoicSpectacles that emphasises their stoic nature. The characterisations they bear, however, are contrasting to one another. Whereas Ishii is a NiceGirl who is willing to help Chito and Yuuri to fix their Kettenkrad after it broke, Big Sis is an AloofDarkHairedGirl and Shijima's AloofBigSister who is driven with her experiments first and with her sister being the second priority; and is willing to commit morally ambiguous acts to achieve it.
** Both are also {{Wrench Wench}}es who have knowledge for engineering. Ishii's approach of knowledge is practical and rooted within the past, as she builds her airplanes based on old, ancient records dating back to many centuries ago and relied on using old materials to create it. Big Sis' approach to it is more on the future and progress side as she is a GadgeteerGenius capable of inventing many very complicated technologies, often fish-themed in nature, of whom which were heavily focused on uncovering the simulation's true nature.
* DarkAndTroubledPast: Spent most of her childhood as a social pariah, in part due to her conflicting hobby amongst her other classmates. This led her to be shunned almost all of the time, leading to her FriendlessBackground. Not to mention, she and Shijima are orphaned who don't have parents at all, who were both [[ParentalAbandonment abandoned]] by them ([[SubvertedTrope or so it seems]]).
* DisappointingOlderSibling: Her younger sister Shijima was often neutral and apathetic towards her moral ambiguity through her experiments with the Dream World through the Fish With Names. However, Shijima later became disillusioned with what happened during the climatic battle between her sister and the Gardener. Temporarily [[PlayingWithATrope Played Straight]] in Chapter 34, when Shijima rather apologizes for the damage she caused.
* DivergentCharacterEvolution: She's virtually [[SuspiciouslySimilarSubstitute similar]] to Mina's sister from the one-shot as Sis copies her appearance and her WrenchWench personality. But as shown in the next few chapters, Sis later becomes a character of her own when her characterisation becomes completely fleshed-out, including a different personality.
* EmotionlessGirl: She's [[TheStoic a stoic]] who is rarely seen showing any emotion even to her own sister and Yomikawa, her complete opposite. It is hard to tell if she even expresses her emotions or not. This is stemmed from the bullying she went through during her time as an elementary student.
* EveryoneCallsHerBarkeep: She is often only known by her title as "Sis" or "Big Sis", as her first name is never revealed.
* {{Foil}}:
** To the Gardener as they are both connected to the world's true nature as a simulation. The Gardener represents natural order and her complete adherence to the status quo, while Big Sis represents chaos and unbound freedom to it. Unlike the Gardener who sticks to her own guns to maintain the natural order with her bound rules for her utopia, Big Sis actively wants to break all of it by making humans unbound to the simulation's rules. The Gardener uses magical powers to maintain the simulation, while Big Sis uses her invented technologies to alter it. Furthermore, the Gardener is a cold idealist, while Sis is a hardline pragmatist.
** To Yomikawa as they are both intellectuals. Yomikawa is a {{Genius Ditz}} who is comical yet genius due to her adherence to philosophical books, while Big Sis leans to the scientific and is aloof and distant but is also a genius like Yomikawa. Unlike Yomikawa who is philosophical, Big Sis is a realist.
** She also has contrasts to her clone, who both have a reckless disregard to the natural order. While Big Sis only wants to unbound humans from the rules of the simulation's status quo, the clone wants to allow humanity to become the better versions of themselves.
* FriendlessBackground: Sis, for all of her years, never has friends to begin with, especially during her elementary years, when she was treated as an outcast for her hobby. The only friend she has is Yomikawa, but it came much later in her time during her high school years.
* GadgeteerGenius: She is an inventor, who is known for her strange technologies, including the Raw Fish Generator, a giant drill excavator, Flounder Block, Twin-Flounder Motor, and Raw Fish Converter.
* IdealistVsPragmatist: Of the Pragmatist scale. This is especially known, when she comes into conflict with the Gardener, since she knows all too well about the occupation and the inner workings of the town itself, including the town's creation.
* KilledOffForReal: Chapter 45 shows a fish sitting in an abandoned house, which turns out to be Sis' own soul inside of it, who is slowly dying. After her last interaction with her younger sister, Sis finally disappears for good.
* LonersAreFreaks: While smart on the outside, Big Sis in the past was a loner for most of the time, where she was treated negatively by her peers due to her interests.
* MenCantKeepHouse: [[InvertedTrope Gender-inverted.]] Her and her sister's apartment room is such a mess that everything is on the floor, including spare parts and other garbage scattered across the room. Also PlayedForLaughs when Big Sis points out to Majime that everything, even the most ridiculous items she has, on the floor is "needed" for her. For her impossible intelligence, housekeeping and cleaning is ''not'' her strength.
* MoralPragmatist: Her "experiments first" mentality is already an indicative flag of this trope. While she's willing to see the reality behind West Yomogi and the true nature behind the entire town itself, she resorts to less-than-ethical means of her own AmbiguouslyEvil goals to alter it with her technologies. She is not inherently evil under circumstances, but her subsequent actions of altering the town to her inherent specifications surfaced more problems than the inherent "goodness" she attempts to do so.
* TheNameless: She has no name at all and is often called by her surname.
* NoSocialSkills: Big Sis never interacted to other people throughout her life, as she spent most of her childhood being [[LonersAreFreaks by herself]], resulted in her being bullied by her peers. It was [[LampshadeHanging Lampshaded]] in one scene where her teacher told her to be (presumably) social towards others. Even in the present she only interacts with the closest people she knew, including Yomikawa, her sister, Majime and Mogawa.
* PerpetualFrowner: She rarely shows a smile to her face, thanks to her stoic and unsmiling personality.
* PromotedToParent: At least to her little sister Shijima, as they don't have parents on their own, but she does ''very little'' parenting throughout the story as she's more focused on her experiments than just taking care of her sister, let alone taking care of their apartment room which is a mess.
* RealityWarper: A part of Sis's ''modus operandi'' to change West Yomogi and make it disappear through her technologies.
* SelfDuplication: In Chapter 40, it is revealed that Sis is able to create clones of herself, as it is shown when the ''original'' Sis, Majime and Shijima were capturing the other rogue Sis clone, as well as her plan to take the Key in an attempt to unlock the humans the ability to change themselves in a whim, which is mostly triggered by Ayaka's performance.
* ShadowArchetype: She and her EvilDoppelganger are the shadows to one another, where they are both obsessed in granting humanity unrestrained freedom and with their actions became significantly impactful at the end. The difference is that Big Sis wants to remove the stringent rules of the simulation, while her clone wants to allow humans to be better versions of themselves, in spite of the obvious damage. The clone is a representation of what happens when Sis goes beyond her own goals, eventually causing the collapse of the simulation's natural order.
* TheSmartGirl: She's not ''only'' a university student, but also a brilliant scientist and an inventor who has invented fish-related technologies at her disposal.
* SoulJar: By the time Shijima meets Sis in the now-ruined West Yomogi, she finds her sister inside in what looked like her fish ornament. It is revealed that Sis' soul is now inside of it in her final moments.
* TheSpock:
** She is this to her younger sister's [[TheKirk Kirk]] and to Majime's [[TheMcCoy [=McCoy=]]]. Out of the three, she's the one who is logical and intellectual yet cold and emotionally distant, being task-oriented who puts emotions aside for logic.
** She is also this to the Gardener's Superego/[[TheKirk Kirk]] and Yomikawa's Id/[[TheMcCoy McCoy]]. While Yomikawa is philosophical yet cheerful, as well as with the Gardener being emotionally balanced and the metaphorical representation of natural order, Big Sis is emotionless and stoical who is an insightful intellect.
* StoicSpectacles: She wears black glasses, which fits her personality as a stoic, emotionless inventor and researcher.
* SuspiciouslySimilarSubstitute: It's no surprise that she's exactly almost similar to Mina's sister from the one-shot, since Mina's appearance, personality and her signature trait of being a WrenchWench were directly copied onto Big Sis. The only minor difference is that Big Sis is a perpetual stoic, completely {{Broad Strok|es}}ing the comical but black humour personality Mina's sister had in the one-shot.
* {{Transplant}}: She's more so a SuspiciouslySimilarSubstitute to Mina's sister from the one-shot, as her entire characterisation and appearance is carried over to this manga. [[BroadStrokes Minus Mina's sister's brief comical personality.]]
* WellIntentionedExtremist: Big Sis' main goal is to let humanity be freed of restrictions from the Gardener that have been embedded within the simulation through granting them reality powers. But on the other end, she is an extremist who is willing to cause a chaotic imbalance to the simulation via that said goal.
* WhatHappenedToTheMouse: Post-Chapter 30 reveals that Sis is nowhere to be seen, as she was last seen with Shijima in what looked like the Parthenon temple in Greece. It is unknown where she has been after Chapter 30. Subverted in Chapter 36, when she makes her appearance again. After Chapter 40 she disappears again, but Chapter 45 she makes a brief appearance, except that she is now dead and is now a soul in the form of a fish.
* WhatTheHellHero: While she [[BeCarefulWhatYouWishFor gets her wish]] of altering West Yomogi in an attempt to spite the Gardener, her efforts went off the rails as her rogue clone became bent in her efforts to give humanity the ability to change themselves, instead of just changing the reality according to their imagination. Her efforts instead caused more problems than good.
* WrenchWench: She's an adept mechanic and an inventor who invented various fish-related technologies and is an expert in engineering.
[[/folder]]
[[folder:The Gardener]]
!!The Gardener
!!!'''First Appearance:''' Chapter 7
->''It's a complete and utter mess...!!''
-->--'''The Gardener'''

[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/the_gardener_chapter_30.png]]
[[caption-width-right:250:"I finally found you. So you did this. ''You're'' the one who's been making a '''mess''' of the town."]]
A mysterious and rather complex entity with a rather unknown motive. She is the member of an unknown race known as The Gardeners, hence her nickname as such.
----
* AntiHero: Her imposed restrictions of the simulation, while seen as means to keep her idealistic utopia in check, is not without the questionable decisions she makes, including the lack of deaths that happens in West Yomogi. She even becomes an antagonistic threat towards Big Sis in Chapter 30, warning her that it is just a "warning shot" and any interference is not tolerated.
* BerserkButton: Everything that does not align rationally well in West Yomogi would be enough to put her into a [[LargeHam hammy]] and sometimes vitriolic fit. On a more serious note, however, when Sis was dead-set in ruining West Yomogi, The Gardener exhibits a more murderous personality when her creation was in danger, almost to the point of initiating a huge battle between her and Sis.
* BewareTheSillyOnes: The Gardener may be a comedic goddess with a LargeHam personality, but she can go into a RageBreakingPoint whenever her creations are harmed.
* CrazyPrepared: After the destruction of the original West Yomogi from Sis, Chapter 34 reveals that she created yet another copy of the town, albeit miniaturised, which is hidden from anyone else.
* GoldAndWhiteAreDivine: A partial subversion. While The Gardener is a deity who is cladded in white dress, as well as having a white hair, there is nothing gold around her.
* HeroAntagonist: While her views of natural order within the simulation borders to antagonistic approaches like attacking Big Sis for her attempts of dismantling it, she only does it to prevent any damages to the simulation. Not that her actions started a red flag in the first place.
* IdealistVsPragmatist: Of the Idealist scale. Not only she created the town of West Yomogi, but she also made it sure that no one dies under her watch. This kind of rule-bending alone unfortunately did not go well, when her plans were put under the radar of Big Sis, who seeks to end it all.
* ImADoctorNotAPlaceholder: In one instance, she hates being mistakenly compared to a police officer.
-->'''Shijima:''' Are you an officer?
-->'''The Gardener:''' Do ''I'' look like one?
* ItsPersonal: Being the fact that she has finally known all too well about Sis' plans to alter West Yomogi, when she later finds out in Chapter 30, it later culminates into an almost destructive stand-off.
* KnightOfCerebus: Her first appearance is mostly [[DownplayedTrope downplayed]], since she was seen as a comic relief character. That changes in Chapter 30, where she suddenly attacks Big Sis, showing that she has known her true intentions of the town from the beginning, leading to a near-destructive stand-off and with Sis completing her goal of destroying the town's illusion. Her actions set off the WhamEpisode, as the manga becomes slightly darker and less comedic, though there's still some shades of comedy seen.
* LargeHam: Her rather bizarre sense of overseeing order within the town tends to border into this.
* TheMaker: She is the true creator of West Yomogi, or at the very least she's the one who oversees it.
* MindOverMatter: She has the power of psychokinesis, which she exhibits it when she throws various vehicles towards Sis.
* MysticalWhiteHair: Her long, white hair is befitting for her status as the mysterious deity of Shijima's world.
* NobodyCanDie: [[PlayingWithATrope Played Straight.]] Being the creator of West Yomogi, that would mean that anyone under The Gardener's watch would never be killed through any means, including accidents. Judging from the dialogue Sis mentioned regarding her doing it from years prior to it, it's assumed that she's been doing it for years.
* OnlyKnownByHerNickname: Her so-called "name", "The Gardener", is a nickname.
* OutOfCharacterMoment: The Gardener has some hammy moments as the deity of West Yomogi, and would point out any bizarre inconsistencies as "a mess". During Chapter 30, she breaks character and goes into SeriousBusiness mode. She turns from a comic relief goddess into a murderous maniac when Big Sis initiated her own plans to alter the town.
* PintSizedPowerhouse: Her height is comparable to a fourth-grader student but she is a powerful deity with psychokinetic powers, who is able to square on against Big Sis.
* ProngsOfPoseidon: A bident variant, where she is always seen equipping a bident with her.
* ReallySevenHundredYearsOld: Being a deity, she is possibly much older than anyone else, in spite of her rather childlike appearance.
* TheReveal: Not only The Gardener is later revealed to be the one overseeing West Yomogi, but there are no reported deaths under her watch, when later deduced by Big Sis in Chapter 30. This is also revealed that West Yomogi was a simulated creation by the Gardener.
* TokenMiniMoe: She is the smallest of the cast, and the only one who looks like a child. [[InvertedTrope Inverted]], when she is the [[TokenAdult oldest]] of the cast, as well.
* UtopiaJustifiesTheMeans: Plucking the meaning of death in her own world, so that nobody will be dead from all forms of accidents and life-threatening situations under her watch. Though her rather extreme actions of committing to it put her on Sis' radar, who priorly warned that everything she does to West Yomogi is simply a "calculation" and a "Papier-mâché".
* WalkingSpoiler: Her appearance in West Yomogi suggests more to her motivations than just a simple bystander.
* TheWatcher:
** She is the overseer of West Yomogi. Her intentions are rather mysterious for the first few chapters, until it reached within the manga's WhamEpisode, Chapter 30, when Sis knew about her motives.
** Chapter 34 has this, when Shijima and Majime later arrive at another city that is miniaturized in nature. Turns out that she has created another copy of West Yomogi, except in the middle of nowhere and is in charge of watching it, presumably to protect it against {{Reality Warper}}s like Sis.
* WhatHappenedToTheMouse: The Gardener is largely absent after the events of Chapter 40, despite being a major character. The only last appearance she makes is reduced to a cameo in Chapter 48.
[[/folder]]

[[folder:The Neighbours]]
!!Shijima's Neighbours
!!!'''First Appearance:''' Chapter 13

[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/shijimas_neighbours.png]]
[[caption-width-right:250:[[Manga/GirlsLastTour Where did we see them before?]]]]
Shijima's neighbours who live in the same Danchi (apartment) complex as Shijima and her sister.
----
* AscendedExtra: The blonde-haired girl started off as a cameo in Chapter 7 and the black-haired girl and a Nuko-esque cat appeared as cameos in Chapter 14. They later become recurring characters after the latter chapter.
* ContrastingReplacementCharacter: Despite being {{Exp|y}}ies to Chito and Yuuri, they are the opposite replacements to both of them from ''Manga/GirlsLastTour'' and they bear opposite traits to their predecessors, which {{Foreshadow|ing}}s their true nature as them not being the same to Chito and Yuuri that Shijima encountered in Chapter 48.
** In general, unlike Chito and Yuuri who are dressed in their military clothing in their entire appearance as well as living in an empty world, the neighbours are dressed in a more casual clothing and are obviously living in a more populated environment.
** The black-haired neighbour is this to Chito. While Chito is a stone-faced, level-headed stoic who is a quiet girl, the black-haired neighbour is neither of those.
** The blonde-haired neighbour is this to Yuuri. Despite both being similar in personality, their main difference is their appearance. Unlike Yuuri where she flows her hair freely, the blonde-haired neighbour often wears her hair in a ponytail.
* {{Expy}}: Of Chito, Yuuri and Nuko from ''Manga/GirlsLastTour'', which happens to be made by the same author. They also have the same appearance, as well. Averted as they are not the same as the ones that Shijima saw in the AfterlifeExpress, who are more so closely resembling to both Chito and Yuuri from tkmiz's previous work, as their simulation counterparts embody a vastly different characterisation.
* EveryoneCallsHimBarkeep: They are both referred to as "neighbours" by Shijima as they don't have names.
* TomatoSurprise: It is revealed in Chapter 48 that the "neighbours" that Shijima saw in the train are not the same when they do not know about her at all. The PlotTwist is that they are not the same as the neighbours, but they are Chito and Yuuri as souls inside the train.
* WalkingSpoiler: It is hard to talk about them without revealing the fact that they are ''not the same'', both in character and in appearance, to Chito and Yuuri that Shijima met inside the train, as their consciousnesses from their previous lives after ''Girls' Last Tour's'' final chapter have been uploaded into the simulation.[[labelnote:Hint]]Both were Shijima's neighbours who all know about the danchis and with memories of them being their next-door neigbours; Chito and Yuuri from the train, contrastingly, do not have any memories of Shijima and with them being one to her in the danchis due to them being completely different to the neighbours, which is already a spoilery detail. The train Yuuri's signature hairstyle from ''GLT'' is also a dead giveaway as it contrasts to the blonde-haired neighbour who sports a vastly different hairstyle often tied up in ponytail.[[/labelnote]]
[[/folder]]

[[folder:Yomikawa]]
!!Yomikawa
!!!'''First Appearance:''' Chapter 19
->''An eternally beautiful girl is eternally a high school girl...''
-->--'''Yomikawa'''

[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/yomikawa_chapter_44.png]]
A mysterious third-year high-school student and a bookworm in Shijima and Majime's school, who is a member of the Hole-Digging Club. Despite her cheery exterior, Yomikawa's life is a mystery.
----
* AmbiguouslyHuman: Yomikawa mentioned that she has been existing for ''far long'' before even existence came to be, pondering at the idea that she ''is not'' even close to being one. There's also other subtle hints that she is not ''human'', as she seemingly has a far-reaching, omniscient understanding of the state of the world they are in, which is often an ability that deities like the Gardener has. She particularly knows of Big Sis' [[RealityWarper reality-warping]] abilities during the events of Chapter 30, as well as revealing to Shijima about their own world being a simulated reality, complicated matters that no ordinary third-year high-school students easily know.
* AnthropomorphicPersonification: She turns out to be a walking library in the fourth dimension. In essence, Yomikawa embodies theoretical and astute knowledge in spite of her exterior comical persona, who has extensive understanding of philosophical books.
* BestFriend: To Big Sis. And the first one Sis befriended.
* {{Bookworm}}: She is an avid reader of books, particularly philosophical ones including ''Osamu Dazai'' and ''Creator/FriedrichNietzsche'''s books. Even [[LampshadeHanging lampshaded]] by the book that sits atop her head.
* DumbBlonde: Zigzagged. While Yomikawa is technically not a literal [[TitleDrop dumb blonde]], since she owns a library and is an avid reader of books, her rather absurd reasons for repeating high school has to do with her claims about eternal beauty being a contributor to being an eternal high school student.
* EarlyBirdCameo: Although she appears on the first cover art along with other major characters, Yomikawa can be seen as early as Chapter 1 looking out of the window at the end of Shijima's first day at school.
* {{Foil}}: She is the complete opposite to Big Sis in terms of her hair colour and her personality. The similarities is their knowledgeable thinking, but the approaches of doing so are polarly different from one another. Whereas Big Sis is a stoic, AloofBigSister to Shijima who is a GadgeteerGenius, being a crazed inventor of her fish-themed technologies, Yomikawa is a [[ThePollyanna Pollyanna]] {{Bookworm}} who seems to have a philosophical and sometimes theoretical grasp of the knowledge of their own world.
* {{Foreshadowing}}: There's several things about Yomikawa that isn't who she really is within her bookworm persona. From the start, she mentions that she's a third-year high school student and has known Big Sis, but she mentions a lot of complicated topics that no normal third-years would generally mention with only Big Sis herself being able to comprehend them. While it is still up the air about Yomikawa existing ''way before'' even existence became a thing, [[AmbiguouslyHuman it is clear that she is not even close to being a human at all]]. She is also well-aware of Big Sis' involvement in handing the powers of RealityWarping to humanity during Chapter 30, which again Big Sis was only aware of it. There's also the fact regarding her seemingly vast knowledge of philosophical books and texts from different periods in time, ranging from Osamu Dazai, Creator/FriedrichNietzsche and even Creator/DanteAlighieri which are often difficult works for average readers to understand; in fact, Yomikawa has a clear and coherent understanding of them. But the most telling of all, Yomikawa, in a strange-looking library, tells to Shijima how she knows everything about the world being a simulated reality in the first place, with Chapter 44's TheReveal pounding the nail in the coffin.
* GeniusDitz: Despite her DumbBlonde tendencies as well as her ditzy nature, Yomikawa is ''extremely'' smart to the point that she's a walking library due to her fascination with philosophical books (something no other regular students even do), as well as having a house with a giant library and her own world that is full of books from different time periods.
* HeldBackInSchool: PlayedForLaughs. It was more of Yomikawa's decision, albeit bordering to ''reductio ad absurdum'', much to Sis's annoyance, to repeat third-year high school several times, as she [[LampshadeHanging lampshades]] it from her conversation with Sis:
--> '''Yomikawa:''' C'mon, we were senior year classmates.
--> '''Sis:''' Why in the world are you ''still'' in high school?
--> '''Yomikawa:''' An eternally beautiful girl is eternally a high school girl...
* InsaneTrollLogic: Invoked, as she claims that being an "eternally beautiful girl" is a contributor to being an ''eternal'' high school girl.
* LastNameBasis: Yomikawa is her surname as she is called by most of the major characters with it, but her first name is unknown. On the other end, Yomikawa calls everyone by their last names.
* LongHairIsFeminine: She has a long, back-length blonde hair that emphasises her femininity.
* MeaningfulName: Yomikawa means "big reader" in English, which befits her hobby as an avid reader.
* MsExposition: During Chapter 44 where she reads a book to Shijima about a civilisation that was destroyed by a pandemic and a RobotWar, which is suspiciously identical to the backstory of ''Manga/GirlsLastTour''. It doesn't help the fact that the "story" Yomikawa exposits is basically connected to ''[=ShimSim=]''.
* ObfuscatingStupidity: Despite her overt comicality Yomikawa is actually intelligent on the outside, who has a deep interest in philosophies. She often mentions things that are considered complicated to an average human, including ''Literature/TheDivineComedy'' and the Bible's Old Testament. This is due to her natural obsession to philosophical books.
* OlderThanSheLooks: Despite Yomikawa being in high school, it is later revealed that she is a young adult, who is within the same age as Big Sis[[note]]presumably in her early 20s (20-24)[[/note]], due to her repeating high school for several times. This also makes her the oldest student in the entire West Yomogi High School.
[[/folder]]

[[folder:The Clone]]
!!Big Sis' Clone
!!!'''First Appearance:''' Chapter 38
-> ''I'm not going to make people disappear. I'm just unlocking the potential for people to change. People will be able to change into the best version of themselves.''
-->--'''Big Sis' Clone'''

[[quoteright:212:https://static.tvtropes.org/pmwiki/pub/images/siss_clone.png]]
[[caption-width-right:212:When one Sis ''isn't'' enough.]]
One of Big Sis's clones encountered by Shijima and Majime.
----
* BadassBoast: How she mocks her own prime regarding her plans for the town and the whole world.
-->'''Big Sis:''' And the world will fall into total chaos in the blink of an eye. That ''is'' your true intention. Don't make reasons up.
-->'''Big Sis's Clone:''' "Your"? You mean "my", right?
* BigBad: She is the closest the manga ever has to have a main antagonist. She makes a grand appearance in Chapter 38, attempting to free-fall her prime's entire world into chaos by feedback loop, during the conflict with her original, Shijima and Majime. Her intention is to grant humanity the ability to change themselves in a whim through the Key, which would directly cause the said feedback loop in the first place.
* TheChessmaster: She masterminded her plans of giving humanity the newfound power to change themselves by using the Mosasa Dogs and their concert during the school festival as a catalyst, in such way that it would start blending in the world's code. While a few characters start to suspect that she is not the ''real'' Big Sis, she was able to blend in with Shijima, who was watching past images of the pre-altered West Yomogi in the festival, before she reveals that the past is nothing more than a material into creating a newfound future she destines, thus showing her true nature and foreshadowing the events of Chapter 40.
* CoverIdentityAnomaly: Averted. While she is the ''actual'' clone of the real Big Sis, the clone is distinguished by the lack of the fish hairpin on her head, which the prime is always seen wearing.
* EvilDoppelganger: As a clone of Big Sis, she starts off as her imperfect, partial copy after the latter's experimentation in the Rock World unintentionally created her. Despite being functionally ''similar'' to her prime, this clone is a vicious rogue to her original, as she has ulterior motives of her own. In Chapter 40 she drove the already warped world into chaos when she began her quest to give humanity the ability of RealityWarping to allow them into changing whatever things they can imagine under their accord. But she ascends into becoming the BigBad of the manga in Chapters 38 to 40, mirroring her prime's past plans of West Yomogi, albeit to far more dangerous levels.
* KillAllHumans: Her main goal is to give reality the newfound powers of changing themselves, where Sis coldly warns that she goes beyond that as it would ultimately cause a feedback loop.
* RealityWarper: Shares this trait with her original, with the exception of her having the ability to allow humanity to change themselves according to their specifications via their imagination.
* TheReveal: Was created from Big Sis' clone creation ability when she used the machine language to increase the computational power of their world. However, she later becomes a self-aware entity, despite having only a part of her prime's consciousness, with her newfound plans to grant humanity the ability to change themselves, as in her own words their "best version". This caused a problematic feedback loop as it led to driving the world into chaotic insanity.
* SomethingOnlyTheyWouldSay: Inverted. The clone mentions many things that the real Big Sis would never say, such as the revelation towards the Mosasa Dogs that they can become music in the first place, signifying her newfound interest in unlocking the Key's potential as Sis only knew about it DURING Chapter 40. She also mentions cryptic things including how the past is simply a material for the future whilst standing besides Shijima, which is also another dead giveaway as the prime never mentions anything about the state of past and present West Yomogi.
* WalkingSpoiler: Her nature as a character is a [[TitleDrop walking spoiler]], as it is impossible to talk about her without mentioning the origin of how she was created and her true goals to the simulation.
* XanatosGambit: When her plans of spreading the Key to humanity became known far and wide by her prime, she later comes into conflict with her. In the midst of the battle she and her clones were restrained one after the other by the prime in an attempt to stop her for good. Except that the clone was able to kickstart that plan, initially unknown to the prime Sis, beforehand by using the Mosasa Dogs' performance as a "resonance effect", where her goal of unlocking humans the power to change themselves was successfully spread across the people of the simulation, ''ultimately'' resulting with the outcome of her goals paying off at the end of the chapter.
[[/folder]]

[[folder:The Visitors]]
!!Chito and Yuuri
!!!'''First Appearance:''' Chapter 48
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/chitoyuurishimsim.png]]

Strange people that Shijima encountered inside the [[AfterlifeExpress train to nowhere]] and look exactly the same as her neighbours. They are revealed to be the souls of Chito and Yuuri.
----
* CanonCharacterAllAlong: While they are seemingly new, yet [[LastEpisodeNewCharacter late additions]] to the story as a ShoutOut to its spiritual predecessor, it is revealed that they are ''the same'' Chito and Yuuri from tkmiz's previous work with their previous life consciousness transported into the simulation. This makes the manga canon to its predecessor.
* HaveWeMet: When Chito asks Shijima if she met her before, the latter mistakenly thought they were neighbours from her old apartment. Unbeknownst to Shijima, she's talking to Chito and Yuuri from ''Manga/GirlsLastTour'' and not her former neighbours.
* LastEpisodeNewCharacter: Introduced much later in the manga's penultimate chapter as a WalkingSpoiler.
* MinorMajorCharacter: Both served as the main characters of ''Girls' Last Tour'', one of tkmiz's works, and only made an appearance in the DenouementEpisode of this manga.
* TheReveal: They are revealed to be the same characters from the author's previous work with their consciousness from their previous life transported into the simulation. It is hinted for the fact that they do not know about them being neighbours to Shijima as well as with Yuuri not having understanding of what a housing complex/danchi is, which is a takeaway as only their simulation counterparts had memories with Shijima. One of the panels of Chapter 48's page 11 is also another revelation as Shijima saw the duo in a grassy world, which is identical as to how both Chito and Yuuri ended up at the finale of ''Girls' Last Tour''.
* WalkingSpoiler: You can't talk about them without spoiling the biggest reveal of the entire manga that it was canon to ''Girls' Last Tour'' all along.
[[/folder]]
----

!!West Yomogi High School
Characters that appear within the eponymous school.

!!!Students
[[folder:Tako]]
!!Tako
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/tako.png]]
A high school girl with an octopus on her shoulder.

* AnimalMotif: Octopuses. Her name is a Japanese word for octopuses and she has a pet octopus as her [[LoyalAnimalCompanion pet animal]].
* LoyalAnimalCompanion: She treats her pet octopus like her "twin sister".
* MeaningfulName: Her name means octopus in English, as she is also shown with a pet octopus beside her.

[[folder:Shark Girl]]
!!Shark Girl
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/shark_girl.png]]
A member of the Literature Club, who is seen wearing a shark headgear.

* AnimalMotif: Sharks, as seen from her SignatureHeadgear and later her pet shark in Chapter 37.
* {{Bookworm}}: Implied to be one, given her status as a member of the Literature Club.
* EveryoneCallsHerBarkeep: She's often referred to as "Shark Girl" with her name being unknown.
* SignatureHeadgear: Her shark headgear.

[[folder:Ayaka]]
!!Ayaka
!!!'''First Appearance:''' Chapter 1
-> ''Can you stop chiming in out of nowhere like that?''
-->--'''Ayaka to Majime'''

[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/ayaka_chapter_39.png]]
The vocalist of Mosasa Dogs and Shijima and Majime's classmate.

* TheComicallySerious: She was annoyed of Majime's antics of attempting to showcase Shijima regarding the value of friendship. Though that doesn't stop her from having a fair share of comedic quirks on her part, such as when she ran away during a lecture on Mr. Takahashi's world history class.
* GirlishPigtails: Ayaka's hair is tied in two twintails that make her look girly.
* RockTrio: She is the vocalist and leader of Mosasa Dogs.
* ThoseTwoGuys: She is often seen with Yumi and Yoshiko on her side.

[[folder:Yumi]]
!!Yumi
!!!'''First Appearance:''' Chapter 1
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/yumi_chapter_40.png]]
The drummer of Mosasa Dogs.

* RockTrio: She is the drummer of Mosasa Dogs.
* ThoseTwoGuys: She is often seen with Ayaka and Yoshiko on her side.

[[folder:Yoshiko]]
!!Yoshiko
!!!'''First Appearance:''' Chapter 1
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/yoshiko_chapter_24.png]]
The bassist of Mosasa Dogs.

* AgeGapRomance: She is in a relationship with Mr. Takahashi, her ''teacher''. Firstly in Chapter 40, where she declares her love to him after her graduation. Then in Chapter 41, Yoshiko marries him in what looked like a bizarre marriage ceremony where most of its attendees are animals.
* HappilyMarried: With Mr. Takahashi. This is [[ZigzaggedTrope Zigzagged]] as her marriage with her ''teacher'' takes place in a bizarre dimension.
* MarriedTooYoung: [[DownplayedTrope Downplayed]]. She is only ''16 years old'' during the [[ZigzaggedTrope Zigzagged]] marriage ceremony in another part of the bizarre dimension with Mr. Takahashi, her teacher. However, as shown in one of the panels, Yoshiko is seen smiling beside Mr. Takahashi, an indication of her marriage going well.
* RockTrio: She is the bassist of Mosasa Dogs.
* ThoseTwoGuys: She is often seen with Ayaka and Yumi on her side.

!!!Staff
[[folder:Principal]]
!!Principal
!!!'''First Appearance:''' Chapter 4
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/principal_shimeji_simulation.jpg]]
The unnamed principal of the school.

* TheAlcoholic: Turned out to be one as shown in Chapter 38 where he's seen drinking with Mogawa, of all people.
* ChekhovsGunman: He shows up again in Chapter 48 as a minor but important character, being one of the only few characters that Shijima still remembers in spite of the long thousand-year TimeSkip.
* EveryoneCallsHimBarkeep: He's often referred to as "principal" and is largely unnamed.
* {{Hypocrite}}: For all his talk about how smoking and drinking are illegal in school grounds, he's a [[BlatantLies blatant liar]] who is seen smoking cigarettes at few points in the manga.
* IdentityAmnesia: It turns out that he's still ''alive'' after a millennia, but he has completely forgotten about his past life as a school principal. Even from his encounter with Shijima, he is shocked when he only asks with a "Who are you?!" towards her. The only thing he remembers is his records from his past and his chainsmoking.
* InsaneTrollLogic: Him justifying his reasons to Shijima and Majime about burning his house and whatever copies it showed up.
-->'''Principal''': Doesn't it feel good? The sight of a house burning? It truly was an embodiment of happiness... Until the day my wife took our daughter and left... Ever since that day, I wanted this house to burn.
* {{Irony}}: Despite being a law-abiding school principal, he's a chain smoker and an alcoholic, who at some points in the story smoked a cigarette casually within ''school grounds''; as well as drinking a bottle of wine with Mogawa.
* MustHaveNicotine: He smokes ''a lot'', as seen in some scenes in the manga, to the point that his character page in Chapter 40.5 explicitly states that he is a "Chain smoker".
* KillItWithFire: A revelation in Chapter 41 shows that he obsessively attempts to burn his house and any subsequent copies that appeared in place of it. This is due to his past where his wife took his daughter away. Borders to InsaneTrollLogic, as with him contemplating that burning it is a sign of happiness not misery.

[[folder:Mr. Takahashi]]
!!Mr. Takahashi
!!!'''First Appearance:''' Chapter 6
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/mr_takahashi.png]]
Shijima and Majime's homeroom teacher, who is the teacher of Class 1-D. He teaches World History.

* AgeGapRomance: He is in love with Yoshiko, his student, judging from Yoshiko's LoveConfession in Chapter 40 and the bizarre marriage ceremony seen in Chapter 41.
* ApatheticTeacher: Mr. Takahashi has less interest in being a teacher, in spite of his occupation. [[LampshadeHanging Lampshaded]] by Shijima when she used her telepathetic powers from her third shimeji to read on his mind, where she sees his apt thought: "Tired... Hungry... Ho..."
* TeacherStudentRomance: He is in love with ''his student'' Yoshiko, later ascending into a [[ZigzaggedTrope Zigzagged]] HappilyMarried relationship.

!!!Groups
[[folder:Hole-Digging Club]]
!!Hole-Digging Club
A rather strange school club, where its members focus on digging holes around school property, for the most part. Big Sis was a former member of the club.

* ChuckCunninghamSyndrome: The club after the events of Chapter 38 are not heard again in-story. Its members, on the other hand, are still present in the story, but the club and even the name itself is nowhere mentioned by its members at all.
* DemotedToExtra: While most of its members played out slightly important within Chapters 1 to 20, with the latter chapter being the central focus for the group as they visited The Gardener's PocketDimension, they were later considered unimportant after the latter chapter, whom they don't have a clear goal of their own afterwards.
* FourPhilosophyEnsemble:
** The Optimist: The cheerful and optimistic Majime, who is the excitable member of the group.
** The Realist: The level-headed but irritable Shijima who is the OnlySaneMan out of the four, balancing the craziness of the club's nature against her logical nature.
** The Apathetic: The quiet ShrinkingViolet Sumida who is mostly neutral with the crazy matters surrounding the club.
** TheCynic: The relaxed and slovenly Mogawa-sensei who is deeply cynical to the point that she's TheAlcoholic.
* RagtagBunchOfMisfits: Its members comprise of the social outcast Shijima, the dimwitted DumbBlonde Majime, the silent and shy ShrinkingViolet Sumida, and the dimwitted high-school repeat Yomikawa.

[[folder:Mosasa Dogs]]
!!Mosasa Dogs
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/mosasa_dogs_chapter_40.png]]
[[caption-width-right:250:From left to right: Yoshiko (guitarist), Ayaka (vocals) and Yumi (drums).]]
A high school band in Shijima and Majime's school, comprising of first-year high school students Ayaka, Yumi and Yoshiko.

* BlondeBrunetteRedhead:
** Yumi has bright yellow hair.
** Ayaka has dark purple hair.
** Yoshiko has reddish-orange hair.
* ChekhovsArmy: In Chapter 40, the Mosasa Dogs play a pivotal role in the series, as their performance is one of the main plot points in the chapter, which is Big Sis telling Shijima to stop their concert, which is revealed to be mixing in with the code of their world.
* EdibleThemeNaming: The Mosasa Dogs' music all have to do with fruits.
* RockTrio:
** Ayaka is the vocalist.
** Yumi is the drummer.
** Yoshiko is the bassist.
[[/folder]]

!!Minor
[[folder:Majime's Mother]]
!!Majime's Mother
!!!'''First Appearance:''' Chapter 14
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/majimes_mother.png]]
The unnamed mother of Majime.

* StrongFamilyResemblance: Majime's appearance is mostly derived from her, including the half-baked egg that sits on top of her head.
* TooMuchAlike: On the receiving end, as Majime inherits most of her personality, thereby they behave almost alike in terms of it.
[[/folder]]

[[folder:Shijima's Friend]]
!!Shijima's Friend
!!!'''First Appearance:''' Chapter 14 (flashback)
-> ''Wow~ Shijima-chan, you're just like a doll!''
-->--'''Shijima's Friend.'''
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/shijimas_friend.png]]
Shijima's unnamed friend during her elementary years.

* CreepyChild: While certainly cute on the outside, she shows to have a creepy obsession of dressing-up someone with cute clothes, as shown within the flashback scene in Chapter 14, given elementary-schooler Shijima's rather blank expression on her face.
* ForgottenFirstMeeting: She is ''actually'' the first friend of Shijima during her elementary years, before Shijima even befriended Majime. But fast forward in the present, her current status remains unknown.
* GirlyGirl: She wears a cute-looking headband with a bow on it, and is shown to have a hobby of dressing-up others, which was exemplified when she dressed Shijima up like a doll.
* NotSoImaginaryFriend: Turns out that she is real, as it was shown that she is Shijima's ''first'' friend during her elementary years, many years before Shijima even befriended Majime in the present. Unfortunately, it is not known [[WhatHappenedToTheMouse what happened to her]] in the present.

[[folder:Mogawa's Younger Sister]]
!!Mogawa's Younger Sister
!!!'''First Appearance:''' Chapter 28 (cameo), Chapter 35 (proper appearance)
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/police_officer_mogawa.png]]
The unnamed younger sister of Mogawa, who works as a police officer.

* ActionGirl: She is a police officer, a complete contrast to her older sister, being able to initiate an evacuation of civilians within Yomogi Market during the zombie attack within West Yomogi.
* BadassNormal: In a rare instance, where she saved Shijima and Majime during the zombie attack with just her shotgun in the middle of an attack.
* ChekhovsGunman: Starts off as an EarlyBirdCameo, before making a major appearance in Chapter 35, who is helping out various residents during the zombie attack.
* EarlyBirdCameo: She appears firstly in Chapter 28 unnamed, before appearing in Chapter 35 again.
* HairColorSpoiler: Not only her relation as Teacher Mogawa's younger sister is [[SpoiledByTheManual spoiled in Chapter 30.5]], but she also has the ''same'' pink hair as her.
* IdenticallyNamedGroup: Zigzagged, as despite having the same "name" as Teacher Mogawa, she is related to her. It's also PlayedForLaughs when Majime calls her "Ms. Mogawa", mistaking her as the teacher Mogawa.
* IdenticalTwinMistake: One can mistake her as Teacher Mogawa's twin sister, due to how similar she looks to her. {{Subverted}} as she explicitly stated that she is her younger sister.
* LateArrivalSpoiler: Reading Chapter 30.5 is considered a spoiler for Officer Mogawa, as her character page reveals her relation as Teacher Mogawa's younger sister.
* MistakenIdentity: At first due to how similar she looks to Teacher Mogawa, Officer Mogawa was ''initially'' mistaken as Teacher Mogawa by both Shijima and Majime. That is until Officer Mogawa reveals that she is Teacher Mogawa's younger sister, clearing all confusion altogether.
* SameSurnameMeansRelated: Averted. Police Officer Mogawa ''is'' related to the Teacher Mogawa, who are both siblings, in spite of their first names being relatively unknown.
* SiblingYinYang: She is the Yang to her older sister's Yin. Both are public service workers, but they are different in many ways. Unlike her sister who is a LazyBum ApatheticTeacher who spends her time being an alcoholic, the officer Mogawa is an ActionGirl police officer who is on the forefront to her job.
* StrongFamilyResemblance: Despite not being twins, she bears resemblance to her older sister.

[[folder:Restaurant Haven Waitress]]
!!Restaurant Haven Waitress
!!!'''First Appearance:''' Chapter 5
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/012_8.png]]

The unnamed waitress of the eponymous restaurant.

* WingedHumanoid: {{Subverted}} as wings at the back of her is glued to the apron as part of the restaurant's angelic motif.

[[folder:The Chiho Tribe]]
!!The Chiho Tribe
!!!'''First Appearance:''' Chapter 46
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/chiho_tribe.png]]
A kingdom mainly composed of talking rabbits who are inhabiting one of the towns within Majime's world. They worship [[CrystalDragonJesus Majime]] as their "most important friend".

* CivilizedAnimal: They're intelligent enough at a human level that they have created their own civilization and behave like humans, making them virtually indistinguishable.
* MeaningfulName: The entire tribe is named after Majime's rabbit plushie Chiho.
* TalkingAnimal[=/=]LivingToys: Mostly they're based on one of Majime's rabbit plushies, they later develop human sentience after Majime gave them one and became independent beings of their own right as many years have passed.
* WalkingSpoiler: Their existence is merely a spoiler, since anything about them will spoil the fact that Majime is the one they worship as their own Goddess as she was the one who created them.

[[folder:Long-Limbed Woman]]
!!Long-Limbed Woman
!!!'''First Appearance:''' Chapter 48
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/longlimbedwoman.png]]

A mysterious entity that Shijima encountered during her long trip.

* TheHermit: She's the only one living in her own world.
* NoodlePeople: She has long arms and legs that she easily towers over Shijima.
* SuspiciouslySimilarSubstitute: She's very similar to Big Sis in terms of personality, being that she's extremely knowledgeable and intellectual regarding the state of their world. Lampshaded by Shijima as to while she's not similar to Sis in appearance, personality-wise she's ''very similar'' to her.
* TimeAbyss: It is unknown how old she is, as she's been existing for a ''very long time'' before West Yomogi and the previous world preceding it.

!!One-Shot
[[folder:Mina]]
!!Mina
!!!'''First Appearance:''' Shimeji Simulation One-Shot
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/mina_one_shot.png]]

The main character in the one-shot of the same title, who serves as the main inspiration for Shijima's character.

* BestFriend: To Yocchan.
* {{Transplant}}: Mina serves as Shijima's inspiration within the main manga, in terms of her personality and her appearance. Part of Shijima's {{Hikikomori}} phase during her two years of middle school is largely due to her friend committing suicide during her first year of middle school.

[[folder:Yocchan]]
!!Yocchan
!!!'''First Appearance:''' Shimeji Simulation One-Shot
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/screenshot_20230102_073948.png]]

Mina's former friend that appears in the one-shot.
----
* BreakTheCutie: Yocchan was seen having a rather [[BleachedUnderpants risqué romantic relationship]] with Mina, which would be considered cute. That is until she committed suicide, which started her friend's descent into reclusion.
* CurtainsMatchTheWindow: She has brown eyes and hair.
* DrivenToSuicide: While the kind of suicide Yocchan committed is unknown, the second last panel reveals that she committed suicide at night, as shown with the ominous line "That night Yocchan died". This started Mina's life as a recluse.
[[/folder]]

!!Spoiler Characters
----
[-Warning: Every SINGLE one of these character pages are a WalkingSpoiler by default, making it impossible to talk about them without revealing major plot spoilers. Administrivia/YouHaveBeenWarned.-]
----
[[folder:Big Sis]]
!!Shijima's Sister/Big Sis
!!!Voiced by: Creator/MaiFuchigami (VOMIC)
!!!'''First Appearance:''' Chapter 1
->''That's too much of a development for a shut-in, don't you think?''
-->--'''Sis to Shijima'''

[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/big_sis.png]]
An alumna of West Yomogi High School, she is the unnamed, enigmatic older sister of Shijima, who is an inventor of several rather odd machines. She is a university student who later dropped out and is the same age as Yomikawa.

----
* AllOfTheOtherReindeer: PlayedForDrama. A part of her past reveals that she was mostly shunned by her other classmates, due to her different hobby.
* AloofBigSister: While she does care about Shijima to some extent, her experiments clearly come first.
* AloofDarkHairedGirl: Big Sis is a black-haired and intelligent [[TheStoic stoic young woman]] who is mostly seen with an aloof expression to her face. She is rather unmoving, rarely showing any emotion at all.
* AmbiguouslyEvil: While not an evil of sorts, her rather bizarre experiments is what gives her the impression of being evil, such as when she sends her younger sister Shijima into the Dream World using the Fish With Names from the Raw Fish Generator for one of her experiments.
* AnimalMotif: Fish is her main motif, which is seen in her experiments, her hair clip, and even the Raw Fish Generator, Flounder Block, Twin-Flounder Motor, and Raw Fish Converter. Not to mention, the Fish With Names, which are used as a key to transport someone into the dream world. Ironically, she is later seen as ''a fish'' by Shijima in Chapter 45, though she now emerges as a soul in the shape of that, due to her being dead.
* AntiHero: Despite her altruistic intentions of pursuing the goal of allowing unrestricted freedom to humans, Big Sis is not without her questionable grey morals, going so far in destroying the fabric of the simulation imposed by the Gardener, which allowed the likes of her rogue clone to cause problems, even putting her into AntiVillain territory, where she was willing to risk the entire world into chaos for her goals. She still cares for her sister, but as shown in the first few chapters their relationship as siblings was mostly transactional. Until Chapter 45 where she finally atoned for her actions and the damage it ultimately caused at the end.
* ArmorPiercingQuestion: She has no qualms in brutally calling out the Gardener by making West Yomogi disappear and later altered completely through her invention.
-->'''Sis''': "I can't...? Says who? The architects of the town? God?"
* TheAtoner: In her dying moments, Big Sis as a fish confesses as to how everything falls apart within the simulation because of her own actions and her clone's actions, before she passes away. As a soul, she later gives her little sister a LastRequest: go back in time during the school festival and reverse everything, but by keeping her distance away from others to not interfere with the changes.
* BatmanGambit: She initiates her plan of uncovering the true nature of the Gardener's hold of the simulation by creating a sea urchin-like device that allows her to peer through the emotions and the thoughts of someone affected by it. While it was successful at the end when she allowed her to have humanity the power of unrestrained freedom through reality warping, such plan soon came consequences when chaos becomes commonplace everywhere. Not helping matters is the clone that she unwittingly created started her own goal to unlock reality furthermore, with the intention of causing even more chaos.
* BeCarefulWhatYouWishFor: Big Sis orchestrated her plans to dismantle West Yomogi to alter the entire world via everyone's imagination, in an attempt to destroy the Gardener's creation for good, in envisioning a free world that fits to her own specifications. While she succeeded in doing so, at least from the Gardener's POV, Big Sis subsequently went to the GoneHorriblyRight territory, after her rogue clone granted humanity the power to change themselves in Chapter 40. What her past actions resulted is her own clone causing a feedback loop that almost plunged the world into chaos.
* BeneathTheMask: Outwardly Big Sis is the epitome of an intelligent stoic. Though one gets a good look beneath that façade through her buried past, as Shijima [[LampshadeHanging lampshades]] it, which showed a completely opposite side of her during her past as a student.
* BestFriend: With the bright-haired Yomikawa. Big Sis is basically the [[MirrorCharacter mirror to her younger sister]] who also has Majime, a bright-haired girl, as her best friend.
* BullyMagnet: In the past, where she was bullied for her own hobbies.
* CollectorOfTheStrange: A specific one, and its fishes. She is a known collector of unusual fishes, known as [[CallARabbitASmeerp Fish With Names]], whom they turned out to be key power sources for Raw Fish Generator and Raw Fish Converter to connect anyone into the dream world, with the fish being produced by the former and converted by the latter.
* ContrastingSequelMainCharacter: To Ishii of ''Manga/GirlsLastTour''.
** Both are scientists who have cool-headed and intelligent personalities, as well as TheStoic and having StoicSpectacles that emphasises their stoic nature. The characterisations they bear, however, are contrasting to one another. Whereas Ishii is a NiceGirl who is willing to help Chito and Yuuri to fix their Kettenkrad after it broke, Big Sis is an AloofDarkHairedGirl and Shijima's AloofBigSister who is driven with her experiments first and with her sister being the second priority; and is willing to commit morally ambiguous acts to achieve it.
** Both are also {{Wrench Wench}}es who have knowledge for engineering. Ishii's approach of knowledge is practical and rooted within the past, as she builds her airplanes based on old, ancient records dating back to many centuries ago and relied on using old materials to create it. Big Sis' approach to it is more on the future and progress side as she is a GadgeteerGenius capable of inventing many very complicated technologies, often fish-themed in nature, of whom which were heavily focused on uncovering the simulation's true nature.
* DarkAndTroubledPast: Spent most of her childhood as a social pariah, in part due to her conflicting hobby amongst her other classmates. This led her to be shunned almost all of the time, leading to her FriendlessBackground. Not to mention, she and Shijima are orphaned who don't have parents at all, who were both [[ParentalAbandonment abandoned]] by them ([[SubvertedTrope or so it seems]]).
* DisappointingOlderSibling: Her younger sister Shijima was often neutral and apathetic towards her moral ambiguity through her experiments with the Dream World through the Fish With Names. However, Shijima later became disillusioned with what happened during the climatic battle between her sister and the Gardener. Temporarily [[PlayingWithATrope Played Straight]] in Chapter 34, when Shijima rather apologizes for the damage she caused.
* DivergentCharacterEvolution: She's virtually [[SuspiciouslySimilarSubstitute similar]] to Mina's sister from the one-shot as Sis copies her appearance and her WrenchWench personality. But as shown in the next few chapters, Sis later becomes a character of her own when her characterisation becomes completely fleshed-out, including a different personality.
* EmotionlessGirl: She's [[TheStoic a stoic]] who is rarely seen showing any emotion even to her own sister and Yomikawa, her complete opposite. It is hard to tell if she even expresses her emotions or not. This is stemmed from the bullying she went through during her time as an elementary student.
* EveryoneCallsHerBarkeep: She is often only known by her title as "Sis" or "Big Sis", as her first name is never revealed.
* {{Foil}}:
** To the Gardener as they are both connected to the world's true nature as a simulation. The Gardener represents natural order and her complete adherence to the status quo, while Big Sis represents chaos and unbound freedom to it. Unlike the Gardener who sticks to her own guns to maintain the natural order with her bound rules for her utopia, Big Sis actively wants to break all of it by making humans unbound to the simulation's rules. The Gardener uses magical powers to maintain the simulation, while Big Sis uses her invented technologies to alter it. Furthermore, the Gardener is a cold idealist, while Sis is a hardline pragmatist.
** To Yomikawa as they are both intellectuals. Yomikawa is a {{Genius Ditz}} who is comical yet genius due to her adherence to philosophical books, while Big Sis leans to the scientific and is aloof and distant but is also a genius like Yomikawa. Unlike Yomikawa who is philosophical, Big Sis is a realist.
** She also has contrasts to her clone, who both have a reckless disregard to the natural order. While Big Sis only wants to unbound humans from the rules of the simulation's status quo, the clone wants to allow humanity to become the better versions of themselves.
* FriendlessBackground: Sis, for all of her years, never has friends to begin with, especially during her elementary years, when she was treated as an outcast for her hobby. The only friend she has is Yomikawa, but it came much later in her time during her high school years.
* GadgeteerGenius: She is an inventor, who is known for her strange technologies, including the Raw Fish Generator, a giant drill excavator, Flounder Block, Twin-Flounder Motor, and Raw Fish Converter.
* IdealistVsPragmatist: Of the Pragmatist scale. This is especially known, when she comes into conflict with the Gardener, since she knows all too well about the occupation and the inner workings of the town itself, including the town's creation.
* KilledOffForReal: Chapter 45 shows a fish sitting in an abandoned house, which turns out to be Sis' own soul inside of it, who is slowly dying. After her last interaction with her younger sister, Sis finally disappears for good.
* LonersAreFreaks: While smart on the outside, Big Sis in the past was a loner for most of the time, where she was treated negatively by her peers due to her interests.
* MenCantKeepHouse: [[InvertedTrope Gender-inverted.]] Her and her sister's apartment room is such a mess that everything is on the floor, including spare parts and other garbage scattered across the room. Also PlayedForLaughs when Big Sis points out to Majime that everything, even the most ridiculous items she has, on the floor is "needed" for her. For her impossible intelligence, housekeeping and cleaning is ''not'' her strength.
* MoralPragmatist: Her "experiments first" mentality is already an indicative flag of this trope. While she's willing to see the reality behind West Yomogi and the true nature behind the entire town itself, she resorts to less-than-ethical means of her own AmbiguouslyEvil goals to alter it with her technologies. She is not inherently evil under circumstances, but her subsequent actions of altering the town to her inherent specifications surfaced more problems than the inherent "goodness" she attempts to do so.
* TheNameless: She has no name at all and is often called by her surname.
* NoSocialSkills: Big Sis never interacted to other people throughout her life, as she spent most of her childhood being [[LonersAreFreaks by herself]], resulted in her being bullied by her peers. It was [[LampshadeHanging Lampshaded]] in one scene where her teacher told her to be (presumably) social towards others. Even in the present she only interacts with the closest people she knew, including Yomikawa, her sister, Majime and Mogawa.
* PerpetualFrowner: She rarely shows a smile to her face, thanks to her stoic and unsmiling personality.
* PromotedToParent: At least to her little sister Shijima, as they don't have parents on their own, but she does ''very little'' parenting throughout the story as she's more focused on her experiments than just taking care of her sister, let alone taking care of their apartment room which is a mess.
* RealityWarper: A part of Sis's ''modus operandi'' to change West Yomogi and make it disappear through her technologies.
* SelfDuplication: In Chapter 40, it is revealed that Sis is able to create clones of herself, as it is shown when the ''original'' Sis, Majime and Shijima were capturing the other rogue Sis clone, as well as her plan to take the Key in an attempt to unlock the humans the ability to change themselves in a whim, which is mostly triggered by Ayaka's performance.
* ShadowArchetype: She and her EvilDoppelganger are the shadows to one another, where they are both obsessed in granting humanity unrestrained freedom and with their actions became significantly impactful at the end. The difference is that Big Sis wants to remove the stringent rules of the simulation, while her clone wants to allow humans to be better versions of themselves, in spite of the obvious damage. The clone is a representation of what happens when Sis goes beyond her own goals, eventually causing the collapse of the simulation's natural order.
* TheSmartGirl: She's not ''only'' a university student, but also a brilliant scientist and an inventor who has invented fish-related technologies at her disposal.
* SoulJar: By the time Shijima meets Sis in the now-ruined West Yomogi, she finds her sister inside in what looked like her fish ornament. It is revealed that Sis' soul is now inside of it in her final moments.
* TheSpock:
** She is this to her younger sister's [[TheKirk Kirk]] and to Majime's [[TheMcCoy [=McCoy=]]]. Out of the three, she's the one who is logical and intellectual yet cold and emotionally distant, being task-oriented who puts emotions aside for logic.
** She is also this to the Gardener's Superego/[[TheKirk Kirk]] and Yomikawa's Id/[[TheMcCoy McCoy]]. While Yomikawa is philosophical yet cheerful, as well as with the Gardener being emotionally balanced and the metaphorical representation of natural order, Big Sis is emotionless and stoical who is an insightful intellect.
* StoicSpectacles: She wears black glasses, which fits her personality as a stoic, emotionless inventor and researcher.
* SuspiciouslySimilarSubstitute: It's no surprise that she's exactly almost similar to Mina's sister from the one-shot, since Mina's appearance, personality and her signature trait of being a WrenchWench were directly copied onto Big Sis. The only minor difference is that Big Sis is a perpetual stoic, completely {{Broad Strok|es}}ing the comical but black humour personality Mina's sister had in the one-shot.
* {{Transplant}}: She's more so a SuspiciouslySimilarSubstitute to Mina's sister from the one-shot, as her entire characterisation and appearance is carried over to this manga. [[BroadStrokes Minus Mina's sister's brief comical personality.]]
* WellIntentionedExtremist: Big Sis' main goal is to let humanity be freed of restrictions from the Gardener that have been embedded within the simulation through granting them reality powers. But on the other end, she is an extremist who is willing to cause a chaotic imbalance to the simulation via that said goal.
* WhatHappenedToTheMouse: Post-Chapter 30 reveals that Sis is nowhere to be seen, as she was last seen with Shijima in what looked like the Parthenon temple in Greece. It is unknown where she has been after Chapter 30. Subverted in Chapter 36, when she makes her appearance again. After Chapter 40 she disappears again, but Chapter 45 she makes a brief appearance, except that she is now dead and is now a soul in the form of a fish.
* WhatTheHellHero: While she [[BeCarefulWhatYouWishFor gets her wish]] of altering West Yomogi in an attempt to spite the Gardener, her efforts went off the rails as her rogue clone became bent in her efforts to give humanity the ability to change themselves, instead of just changing the reality according to their imagination. Her efforts instead caused more problems than good.
* WrenchWench: She's an adept mechanic and an inventor who invented various fish-related technologies and is an expert in engineering.
[[/folder]]
[[folder:The Gardener]]
!!The Gardener
!!!'''First Appearance:''' Chapter 7
->''It's a complete and utter mess...!!''
-->--'''The Gardener'''

[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/the_gardener_chapter_30.png]]
[[caption-width-right:250:"I finally found you. So you did this. ''You're'' the one who's been making a '''mess''' of the town."]]
A mysterious and rather complex entity with a rather unknown motive. She is the member of an unknown race known as The Gardeners, hence her nickname as such.
----
* AntiHero: Her imposed restrictions of the simulation, while seen as means to keep her idealistic utopia in check, is not without the questionable decisions she makes, including the lack of deaths that happens in West Yomogi. She even becomes an antagonistic threat towards Big Sis in Chapter 30, warning her that it is just a "warning shot" and any interference is not tolerated.
* BerserkButton: Everything that does not align rationally well in West Yomogi would be enough to put her into a [[LargeHam hammy]] and sometimes vitriolic fit. On a more serious note, however, when Sis was dead-set in ruining West Yomogi, The Gardener exhibits a more murderous personality when her creation was in danger, almost to the point of initiating a huge battle between her and Sis.
* BewareTheSillyOnes: The Gardener may be a comedic goddess with a LargeHam personality, but she can go into a RageBreakingPoint whenever her creations are harmed.
* CrazyPrepared: After the destruction of the original West Yomogi from Sis, Chapter 34 reveals that she created yet another copy of the town, albeit miniaturised, which is hidden from anyone else.
* GoldAndWhiteAreDivine: A partial subversion. While The Gardener is a deity who is cladded in white dress, as well as having a white hair, there is nothing gold around her.
* HeroAntagonist: While her views of natural order within the simulation borders to antagonistic approaches like attacking Big Sis for her attempts of dismantling it, she only does it to prevent any damages to the simulation. Not that her actions started a red flag in the first place.
* IdealistVsPragmatist: Of the Idealist scale. Not only she created the town of West Yomogi, but she also made it sure that no one dies under her watch. This kind of rule-bending alone unfortunately did not go well, when her plans were put under the radar of Big Sis, who seeks to end it all.
* ImADoctorNotAPlaceholder: In one instance, she hates being mistakenly compared to a police officer.
-->'''Shijima:''' Are you an officer?
-->'''The Gardener:''' Do ''I'' look like one?
* ItsPersonal: Being the fact that she has finally known all too well about Sis' plans to alter West Yomogi, when she later finds out in Chapter 30, it later culminates into an almost destructive stand-off.
* KnightOfCerebus: Her first appearance is mostly [[DownplayedTrope downplayed]], since she was seen as a comic relief character. That changes in Chapter 30, where she suddenly attacks Big Sis, showing that she has known her true intentions of the town from the beginning, leading to a near-destructive stand-off and with Sis completing her goal of destroying the town's illusion. Her actions set off the WhamEpisode, as the manga becomes slightly darker and less comedic, though there's still some shades of comedy seen.
* LargeHam: Her rather bizarre sense of overseeing order within the town tends to border into this.
* TheMaker: She is the true creator of West Yomogi, or at the very least she's the one who oversees it.
* MindOverMatter: She has the power of psychokinesis, which she exhibits it when she throws various vehicles towards Sis.
* MysticalWhiteHair: Her long, white hair is befitting for her status as the mysterious deity of Shijima's world.
* NobodyCanDie: [[PlayingWithATrope Played Straight.]] Being the creator of West Yomogi, that would mean that anyone under The Gardener's watch would never be killed through any means, including accidents. Judging from the dialogue Sis mentioned regarding her doing it from years prior to it, it's assumed that she's been doing it for years.
* OnlyKnownByHerNickname: Her so-called "name", "The Gardener", is a nickname.
* OutOfCharacterMoment: The Gardener has some hammy moments as the deity of West Yomogi, and would point out any bizarre inconsistencies as "a mess". During Chapter 30, she breaks character and goes into SeriousBusiness mode. She turns from a comic relief goddess into a murderous maniac when Big Sis initiated her own plans to alter the town.
* PintSizedPowerhouse: Her height is comparable to a fourth-grader student but she is a powerful deity with psychokinetic powers, who is able to square on against Big Sis.
* ProngsOfPoseidon: A bident variant, where she is always seen equipping a bident with her.
* ReallySevenHundredYearsOld: Being a deity, she is possibly much older than anyone else, in spite of her rather childlike appearance.
* TheReveal: Not only The Gardener is later revealed to be the one overseeing West Yomogi, but there are no reported deaths under her watch, when later deduced by Big Sis in Chapter 30. This is also revealed that West Yomogi was a simulated creation by the Gardener.
* TokenMiniMoe: She is the smallest of the cast, and the only one who looks like a child. [[InvertedTrope Inverted]], when she is the [[TokenAdult oldest]] of the cast, as well.
* UtopiaJustifiesTheMeans: Plucking the meaning of death in her own world, so that nobody will be dead from all forms of accidents and life-threatening situations under her watch. Though her rather extreme actions of committing to it put her on Sis' radar, who priorly warned that everything she does to West Yomogi is simply a "calculation" and a "Papier-mâché".
* WalkingSpoiler: Her appearance in West Yomogi suggests more to her motivations than just a simple bystander.
* TheWatcher:
** She is the overseer of West Yomogi. Her intentions are rather mysterious for the first few chapters, until it reached within the manga's WhamEpisode, Chapter 30, when Sis knew about her motives.
** Chapter 34 has this, when Shijima and Majime later arrive at another city that is miniaturized in nature. Turns out that she has created another copy of West Yomogi, except in the middle of nowhere and is in charge of watching it, presumably to protect it against {{Reality Warper}}s like Sis.
* WhatHappenedToTheMouse: The Gardener is largely absent after the events of Chapter 40, despite being a major character. The only last appearance she makes is reduced to a cameo in Chapter 48.
[[/folder]]

[[folder:The Neighbours]]
!!Shijima's Neighbours
!!!'''First Appearance:''' Chapter 13

[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/shijimas_neighbours.png]]
[[caption-width-right:250:[[Manga/GirlsLastTour Where did we see them before?]]]]
Shijima's neighbours who live in the same Danchi (apartment) complex as Shijima and her sister.
----
* AscendedExtra: The blonde-haired girl started off as a cameo in Chapter 7 and the black-haired girl and a Nuko-esque cat appeared as cameos in Chapter 14. They later become recurring characters after the latter chapter.
* ContrastingReplacementCharacter: Despite being {{Exp|y}}ies to Chito and Yuuri, they are the opposite replacements to both of them from ''Manga/GirlsLastTour'' and they bear opposite traits to their predecessors, which {{Foreshadow|ing}}s their true nature as them not being the same to Chito and Yuuri that Shijima encountered in Chapter 48.
** In general, unlike Chito and Yuuri who are dressed in their military clothing in their entire appearance as well as living in an empty world, the neighbours are dressed in a more casual clothing and are obviously living in a more populated environment.
** The black-haired neighbour is this to Chito. While Chito is a stone-faced, level-headed stoic who is a quiet girl, the black-haired neighbour is neither of those.
** The blonde-haired neighbour is this to Yuuri. Despite both being similar in personality, their main difference is their appearance. Unlike Yuuri where she flows her hair freely, the blonde-haired neighbour often wears her hair in a ponytail.
* {{Expy}}: Of Chito, Yuuri and Nuko from ''Manga/GirlsLastTour'', which happens to be made by the same author. They also have the same appearance, as well. Averted as they are not the same as the ones that Shijima saw in the AfterlifeExpress, who are more so closely resembling to both Chito and Yuuri from tkmiz's previous work, as their simulation counterparts embody a vastly different characterisation.
* EveryoneCallsHimBarkeep: They are both referred to as "neighbours" by Shijima as they don't have names.
* TomatoSurprise: It is revealed in Chapter 48 that the "neighbours" that Shijima saw in the train are not the same when they do not know about her at all. The PlotTwist is that they are not the same as the neighbours, but they are Chito and Yuuri as souls inside the train.
* WalkingSpoiler: It is hard to talk about them without revealing the fact that they are ''not the same'', both in character and in appearance, to Chito and Yuuri that Shijima met inside the train, as their consciousnesses from their previous lives after ''Girls' Last Tour's'' final chapter have been uploaded into the simulation.[[labelnote:Hint]]Both were Shijima's neighbours who all know about the danchis and with memories of them being their next-door neigbours; Chito and Yuuri from the train, contrastingly, do not have any memories of Shijima and with them being one to her in the danchis due to them being completely different to the neighbours, which is already a spoilery detail. The train Yuuri's signature hairstyle from ''GLT'' is also a dead giveaway as it contrasts to the blonde-haired neighbour who sports a vastly different hairstyle often tied up in ponytail.[[/labelnote]]
[[/folder]]

[[folder:Yomikawa]]
!!Yomikawa
!!!'''First Appearance:''' Chapter 19
->''An eternally beautiful girl is eternally a high school girl...''
-->--'''Yomikawa'''

[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/yomikawa_chapter_44.png]]
A mysterious third-year high-school student and a bookworm in Shijima and Majime's school, who is a member of the Hole-Digging Club. Despite her cheery exterior, Yomikawa's life is a mystery.
----
* AmbiguouslyHuman: Yomikawa mentioned that she has been existing for ''far long'' before even existence came to be, pondering at the idea that she ''is not'' even close to being one. There's also other subtle hints that she is not ''human'', as she seemingly has a far-reaching, omniscient understanding of the state of the world they are in, which is often an ability that deities like the Gardener has. She particularly knows of Big Sis' [[RealityWarper reality-warping]] abilities during the events of Chapter 30, as well as revealing to Shijima about their own world being a simulated reality, complicated matters that no ordinary third-year high-school students easily know.
* AnthropomorphicPersonification: She turns out to be a walking library in the fourth dimension. In essence, Yomikawa embodies theoretical and astute knowledge in spite of her exterior comical persona, who has extensive understanding of philosophical books.
* BestFriend: To Big Sis. And the first one Sis befriended.
* {{Bookworm}}: She is an avid reader of books, particularly philosophical ones including ''Osamu Dazai'' and ''Creator/FriedrichNietzsche'''s books. Even [[LampshadeHanging lampshaded]] by the book that sits atop her head.
* DumbBlonde: Zigzagged. While Yomikawa is technically not a literal [[TitleDrop dumb blonde]], since she owns a library and is an avid reader of books, her rather absurd reasons for repeating high school has to do with her claims about eternal beauty being a contributor to being an eternal high school student.
* EarlyBirdCameo: Although she appears on the first cover art along with other major characters, Yomikawa can be seen as early as Chapter 1 looking out of the window at the end of Shijima's first day at school.
* {{Foil}}: She is the complete opposite to Big Sis in terms of her hair colour and her personality. The similarities is their knowledgeable thinking, but the approaches of doing so are polarly different from one another. Whereas Big Sis is a stoic, AloofBigSister to Shijima who is a GadgeteerGenius, being a crazed inventor of her fish-themed technologies, Yomikawa is a [[ThePollyanna Pollyanna]] {{Bookworm}} who seems to have a philosophical and sometimes theoretical grasp of the knowledge of their own world.
* {{Foreshadowing}}: There's several things about Yomikawa that isn't who she really is within her bookworm persona. From the start, she mentions that she's a third-year high school student and has known Big Sis, but she mentions a lot of complicated topics that no normal third-years would generally mention with only Big Sis herself being able to comprehend them. While it is still up the air about Yomikawa existing ''way before'' even existence became a thing, [[AmbiguouslyHuman it is clear that she is not even close to being a human at all]]. She is also well-aware of Big Sis' involvement in handing the powers of RealityWarping to humanity during Chapter 30, which again Big Sis was only aware of it. There's also the fact regarding her seemingly vast knowledge of philosophical books and texts from different periods in time, ranging from Osamu Dazai, Creator/FriedrichNietzsche and even Creator/DanteAlighieri which are often difficult works for average readers to understand; in fact, Yomikawa has a clear and coherent understanding of them. But the most telling of all, Yomikawa, in a strange-looking library, tells to Shijima how she knows everything about the world being a simulated reality in the first place, with Chapter 44's TheReveal pounding the nail in the coffin.
* GeniusDitz: Despite her DumbBlonde tendencies as well as her ditzy nature, Yomikawa is ''extremely'' smart to the point that she's a walking library due to her fascination with philosophical books (something no other regular students even do), as well as having a house with a giant library and her own world that is full of books from different time periods.
* HeldBackInSchool: PlayedForLaughs. It was more of Yomikawa's decision, albeit bordering to ''reductio ad absurdum'', much to Sis's annoyance, to repeat third-year high school several times, as she [[LampshadeHanging lampshades]] it from her conversation with Sis:
--> '''Yomikawa:''' C'mon, we were senior year classmates.
--> '''Sis:''' Why in the world are you ''still'' in high school?
--> '''Yomikawa:''' An eternally beautiful girl is eternally a high school girl...
* InsaneTrollLogic: Invoked, as she claims that being an "eternally beautiful girl" is a contributor to being an ''eternal'' high school girl.
* LastNameBasis: Yomikawa is her surname as she is called by most of the major characters with it, but her first name is unknown. On the other end, Yomikawa calls everyone by their last names.
* LongHairIsFeminine: She has a long, back-length blonde hair that emphasises her femininity.
* MeaningfulName: Yomikawa means "big reader" in English, which befits her hobby as an avid reader.
* MsExposition: During Chapter 44 where she reads a book to Shijima about a civilisation that was destroyed by a pandemic and a RobotWar, which is suspiciously identical to the backstory of ''Manga/GirlsLastTour''. It doesn't help the fact that the "story" Yomikawa exposits is basically connected to ''[=ShimSim=]''.
* ObfuscatingStupidity: Despite her overt comicality Yomikawa is actually intelligent on the outside, who has a deep interest in philosophies. She often mentions things that are considered complicated to an average human, including ''Literature/TheDivineComedy'' and the Bible's Old Testament. This is due to her natural obsession to philosophical books.
* OlderThanSheLooks: Despite Yomikawa being in high school, it is later revealed that she is a young adult, who is within the same age as Big Sis[[note]]presumably in her early 20s (20-24)[[/note]], due to her repeating high school for several times. This also makes her the oldest student in the entire West Yomogi High School.
[[/folder]]

[[folder:The Clone]]
!!Big Sis' Clone
!!!'''First Appearance:''' Chapter 38
-> ''I'm not going to make people disappear. I'm just unlocking the potential for people to change. People will be able to change into the best version of themselves.''
-->--'''Big Sis' Clone'''

[[quoteright:212:https://static.tvtropes.org/pmwiki/pub/images/siss_clone.png]]
[[caption-width-right:212:When one Sis ''isn't'' enough.]]
One of Big Sis's clones encountered by Shijima and Majime.
----
* BadassBoast: How she mocks her own prime regarding her plans for the town and the whole world.
-->'''Big Sis:''' And the world will fall into total chaos in the blink of an eye. That ''is'' your true intention. Don't make reasons up.
-->'''Big Sis's Clone:''' "Your"? You mean "my", right?
* BigBad: She is the closest the manga ever has to have a main antagonist. She makes a grand appearance in Chapter 38, attempting to free-fall her prime's entire world into chaos by feedback loop, during the conflict with her original, Shijima and Majime. Her intention is to grant humanity the ability to change themselves in a whim through the Key, which would directly cause the said feedback loop in the first place.
* TheChessmaster: She masterminded her plans of giving humanity the newfound power to change themselves by using the Mosasa Dogs and their concert during the school festival as a catalyst, in such way that it would start blending in the world's code. While a few characters start to suspect that she is not the ''real'' Big Sis, she was able to blend in with Shijima, who was watching past images of the pre-altered West Yomogi in the festival, before she reveals that the past is nothing more than a material into creating a newfound future she destines, thus showing her true nature and foreshadowing the events of Chapter 40.
* CoverIdentityAnomaly: Averted. While she is the ''actual'' clone of the real Big Sis, the clone is distinguished by the lack of the fish hairpin on her head, which the prime is always seen wearing.
* EvilDoppelganger: As a clone of Big Sis, she starts off as her imperfect, partial copy after the latter's experimentation in the Rock World unintentionally created her. Despite being functionally ''similar'' to her prime, this clone is a vicious rogue to her original, as she has ulterior motives of her own. In Chapter 40 she drove the already warped world into chaos when she began her quest to give humanity the ability of RealityWarping to allow them into changing whatever things they can imagine under their accord. But she ascends into becoming the BigBad of the manga in Chapters 38 to 40, mirroring her prime's past plans of West Yomogi, albeit to far more dangerous levels.
* KillAllHumans: Her main goal is to give reality the newfound powers of changing themselves, where Sis coldly warns that she goes beyond that as it would ultimately cause a feedback loop.
* RealityWarper: Shares this trait with her original, with the exception of her having the ability to allow humanity to change themselves according to their specifications via their imagination.
* TheReveal: Was created from Big Sis' clone creation ability when she used the machine language to increase the computational power of their world. However, she later becomes a self-aware entity, despite having only a part of her prime's consciousness, with her newfound plans to grant humanity the ability to change themselves, as in her own words their "best version". This caused a problematic feedback loop as it led to driving the world into chaotic insanity.
* SomethingOnlyTheyWouldSay: Inverted. The clone mentions many things that the real Big Sis would never say, such as the revelation towards the Mosasa Dogs that they can become music in the first place, signifying her newfound interest in unlocking the Key's potential as Sis only knew about it DURING Chapter 40. She also mentions cryptic things including how the past is simply a material for the future whilst standing besides Shijima, which is also another dead giveaway as the prime never mentions anything about the state of past and present West Yomogi.
* WalkingSpoiler: Her nature as a character is a [[TitleDrop walking spoiler]], as it is impossible to talk about her without mentioning the origin of how she was created and her true goals to the simulation.
* XanatosGambit: When her plans of spreading the Key to humanity became known far and wide by her prime, she later comes into conflict with her. In the midst of the battle she and her clones were restrained one after the other by the prime in an attempt to stop her for good. Except that the clone was able to kickstart that plan, initially unknown to the prime Sis, beforehand by using the Mosasa Dogs' performance as a "resonance effect", where her goal of unlocking humans the power to change themselves was successfully spread across the people of the simulation, ''ultimately'' resulting with the outcome of her goals paying off at the end of the chapter.
[[/folder]]

[[folder:The Visitors]]
!!Chito and Yuuri
!!!'''First Appearance:''' Chapter 48
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/chitoyuurishimsim.png]]

Strange people that Shijima encountered inside the [[AfterlifeExpress train to nowhere]] and look exactly the same as her neighbours. They are revealed to be the souls of Chito and Yuuri.
----
* CanonCharacterAllAlong: While they are seemingly new, yet [[LastEpisodeNewCharacter late additions]] to the story as a ShoutOut to its spiritual predecessor, it is revealed that they are ''the same'' Chito and Yuuri from tkmiz's previous work with their previous life consciousness transported into the simulation. This makes the manga canon to its predecessor.
* HaveWeMet: When Chito asks Shijima if she met her before, the latter mistakenly thought they were neighbours from her old apartment. Unbeknownst to Shijima, she's talking to Chito and Yuuri from ''Manga/GirlsLastTour'' and not her former neighbours.
* LastEpisodeNewCharacter: Introduced much later in the manga's penultimate chapter as a WalkingSpoiler.
* MinorMajorCharacter: Both served as the main characters of ''Girls' Last Tour'', one of tkmiz's works, and only made an appearance in the DenouementEpisode of this manga.
* TheReveal: They are revealed to be the same characters from the author's previous work with their consciousness from their previous life transported into the simulation. It is hinted for the fact that they do not know about them being neighbours to Shijima as well as with Yuuri not having understanding of what a housing complex/danchi is, which is a takeaway as only their simulation counterparts had memories with Shijima. One of the panels of Chapter 48's page 11 is also another revelation as Shijima saw the duo in a grassy world, which is identical as to how both Chito and Yuuri ended up at the finale of ''Girls' Last Tour''.
* WalkingSpoiler: You can't talk about them without spoiling the biggest reveal of the entire manga that it was canon to ''Girls' Last Tour'' all along.
[[/folder]]

[[WMG:[[center: [-''Manga/ShimejiSimulation'' '''Main Character Index'''\\

Main Characters ([[Characters/ShimejiSimulationShijimaTsukishima Shijima Tsukishima]]) -]]]]]

!!Supporting

* CrystalDragonJesus: Majime, as a Goddess, is loosely based on the Greek Goddess of Friendship Philotes, in line with the former's goal of making a world where everyone becomes a friend to one another as its religion. She is currently worshipped by the people of her world and her people calls her as "friend" or even "Majime-chan" rather than a Goddess. Also taken to some ridiculous levels when the Chiho tribe members call her as their "most important friend" in front of her statue. And smaller statues of her are also seen scattered across various places.

* NoSocialSkills: Big Sis never interacted to other people throughout her life, as she spent most of her childhood being [[LonersAreFreaks by herself]], resulted in her being bullied by her peers. It was [[LampshadeHanging Lampshaded]] in one scene where her teacher told her to be (presumably) social towards others. Even in the present she only interacts with the closest people she knew, including Yomikawa, her sister, Majime and Mogawa..

A tribe mainly composed of talking rabbits who are inhabiting one of the towns within Majime's world. They worship [[CrystalDragonJesus Majime]] as their "most important friend".

* CrystalDragonJesus: Majime, as a Goddess, is loosely based on the Greek Goddess of Friendship Philotes, in line with the former's goal of making a world where everyone becomes a friend to one another as its religion. She is currently worshipped by the people of her world and her people calls her as "friend" or even "Majime-chan" rather than a Goddess. Also taken to some ridiculous levels when the Chiho tribe members call her as their "most important friend" in front of her statue.

* PerpetualSmiler: In contrast to Shijima's PerpetualFrowner, Majime smiles for most of the time, owing to her optimistic nature and her attempts to make friends with one another. Until Chapter 46 where she foregoes it when [[RealityEnsues reality hits her hard]] after her attempts to spread her religion of friendship failed horribly when countries caused war against each other over it.

* NoSocialSkills: Big Sis never interacted to other people throughout her life, as she spent most of her childhood being [[LonersAreFreaks by herself]], resulted in her being bullied by her peers. It was [[LampshadeHanging Lampshaded]] in one scene where her teacher told her to be (presumably) social towards others. Even in the present she only interacts with the closest people she knew, including Yomikawa, her sister, Majime and Mogawa.

** She is this to her younger sister's [[TheKirk Kirk]] and to Majime's [[TheMcCoy [=McCoy=]]]. Out of the three, she's the one who is logical and intellectual being task-oriented who puts emotions aside for logic.

* TomatoSurprise: Due to being fundamentally identical to the neighbours, until it is revealed that they are not the same when they do not know about Shijima at all. The PlotTwist is that they are not the same as the neighbours, but they are Chito and Yuuri as souls inside the train.

* TomatoSurprise: Due to being fundamentally identical to the neighbours, until it is revealed that they are not the same when they do not know about Shijima at all.

* TomatoSurprise: Due to being fundamentally identical to the neighbours, until it is revealed that they are not the same at all when they do not know about Shijima at all.