Cool Big Sisters and Brothers in Anime and Manga.
- Urd of Ah! My Goddess, to both younger sister Skuld and Keiichi on occasion, though with mixed success. Skuld seems to regard Belldandy more as her Cool Big Sis than Urd.
- Sanae Kashima takes to this role almost immediately in Alice & Zoroku in regards to Sana. Thanks to being forewarned by her grandfather, she's able to take Sana's powers in stride and be understanding about Sana's initial nervousness around her. Sanae wins Sana over in short order by doing her hair for her, making her food, and comforting Sana when traumatic memories start to overwhelm her.
- Sai in Angelic Layer is this for Misaki when the latter reaches the finals. The first thing she does when they meet is hold Misaki's hand and help her walk out to the crowd. She also helps her discover Hikaru's weakness and through Sai's backstory where we find out she had a little sister who died of an illness, and was her entire reason for playing Angelic Layer it can be assumed she sees Misaki in the same way.
- Also in a little twist, Hatoko is like this for Misaki as well, despite being a few years younger, by constantly teaching her about Angelic Layer and helping her become a better player.
- Appare-Ranman!:
- Unlike the rest of his family, Appare's older sister at least tries to be accepting towards her little brother's ideas. She even gives him an amulet when he leaves their household.
- Sofia, Al's childhood friend, also treats him like a younger brother, being his former babysitter and all.
- In Asteroid in Love, Mira's older sister, Misa, is the Student Council President. Mature, composed and easygoing, she does her best to look after Mira. Moe immediately takes a liking to her when they meet. In addition, she eagerly helps out with promoting the Earth Science Club's newsletter, albeit embarrassing Mira in the process.
- Petra Ral from Attack on Titan became one to Eren. She functioned as a Team Mom to Levi's squad, and was the most supportive and kind member.
- Sakaki from Azumanga Daioh is pretty much this, being quite protective of Chiyo-chan and earning Chiyo's admiration in return. And then there's all her in-show fangirls.
- In Bad Company (an Origin Story prequel to GTO: The Early Years), middle-schoolers Eikichi, Ryuji, and their friends meet 18-year-old Natsuki, who drives them around in her car and even lets them take it for a spin (which she soon regrets). When she finds out Ryuji's parents have locked him out for the night, she lets him stay at her place, and even gives him her old motorcycle to ride. Ryuji quickly develops a Precocious Crush on her, though to the others she's more of this trope played straight. In GTO: The Early Years, Ryuji's actual sister counts as well (see the entry for SJG below).
- Kirino Chiba, Bamboo Blade's Kendo Team Captain, is more ditzy than flirty, but is clearly remarked to be the Cool Big Sis for the kendo team, which helps to keep them united. This may also make her something of a Team Mom.
- Bitter Virgin has Izumi Suwa, elder sister of Daisuke, who is considered a Cool Big Sis by Daisuke's childhood friend Yuzu Yamamoto. She also becomes such to female lead Hinako when she encourages her to fight for Daisuke's affections and becomes the only person who Hinako has knowingly divulged her secrets to. She also earns some points for casually dismissing the flak she catches for returning to her conservative home town very pregnant with no father in sight.
- Bleach gives us two:
- Rangiku Matsumoto. She really takes on the Cool Big Sis role when she lives with Orihime, and later is this also to Momo and her own captain.
- Yoruichi Shihoin. Teases the hell out of Ichigo, after abandoning cat form and appearing nude in front of him, revealing his prudishness. Also she was the mentor of both a teenage Soifon and a teenage Byakuya. (Byakuya was even less thrilled than Ichigo by Yoruichi's antics, making Soifon the only one of the trio who adored having her as a mentor and Cool Big Sis. And maybe even more). Made more amusing by the fact she IS an actual big sister to her brother, Yushiro, who worships and admires her.
- Anastasia of Brave10 becomes Isanami's sister figure after she rescues her from Date and acts as the Good Bad Action Girl to Isanamis's wide-eyed innocent Damsel in Distress. But it's a ruse. Ana actually hates the concept of family-like bonds, and it was all an act, probably devised by Hanzo to eventually break Isanami.
- Fuuko is this to Kouta in Brave Exkaiser. Even if she's selfish at times and can be a little annoying to him, she does genuinely care about him and is nice to him when it counts.
- Played for laughs with Li Syaoran's four older sisters in the first Cardcaptor Sakura movie. They were all very sweet and well-intentioned... and complete Kawaiikos.
- In A Centaur's Life, Class Representative Manami Mitami is this to her four younger siblings, Chigusa, Chinami, Chiho and Suetsumu.
- Himeno is this to her younger cousin, Shiho. Shiho herself acts as a Cool Big Sis to an even younger centaur girl from the same kindergarten, Maki.
- Satella from Chrono Crusade fits this trope somewhat, although Azmaria is the only one that really looks up to her. (Rosette is generally more frustrated with her antics than anything, although there's moments where they share bits of advice with each other.)
- And of course, Rosette plays the role straight towards Azmaria, as the picture above shows.
- Milly Ashford, the Student Council President from Code Geass, is actually referred to on the show's official website as a "reliable older sister" to her friends (when she isn't tormenting them with her playful antics and "magic spells"). She's one of the more popular side characters due to this, as well as her... um... huge tracts of land and eagerness to grope the female Student Council members.
- Cornelia is one to her little sister Euphemia, who in turn was one to Nunnally.
- Daltanious: Sanae Shiratori is viewed as one by all the children of Adalus Base because she uses her medical skills to keep them safe post Alien Invasion.
- Dragon Ball:
- When she's not being a bossy spoiled Rich Bitch, Bulma actually acted like this to Kid Goku in Dragon Ball; hell, she even gave him a bath and actually washing him herself. Maybe Bulma gets it from her big sister Tights (the girl from Jaco the Galactic Patrolman).
- Good Launch and eventually Bad Launch acts like this towards Goku and Krillin.
- In Dragon Ball Z Tomboy Videl becomes this to Kid Trunks and Goten, especially in Non-Serial Movie Broly – Second Coming.
- In Dragon Ball Super Caulifla is this for Kale, or maybe something more.
- Doctor Slump:
- Arale, despite her childish attitude, is one for her younger siblings Gatchan and Turbo, who adore her, always play with her and admire her incredible above-human abilities, although she is more of a fun older sister than an example to follow as such.
- Peasuke sees his older brother Taro in this way, and often tries to be like him, perhaps one reason why he always hangs out with him and his friends.
- Akane is a surrogate version of this for Arale. While she can often talk her into getting into trouble with her, she is also the one who takes the most care of her and teaches her various things about everyday life that Arale is unaware of, and as a result Arale adores her for the same.
- Senbei often wants to pretend that he is this for Arale, as he prefers the village to believe that they are siblings, but he always fails in the attempt, as he is old enough to be more of a father figure than an older brother.
- Erza Scarlet from Fairy Tail definatly qualifies. She is respected and admired by her fellow guild mates and especially Lucy looks up to her. (In a letter Lucy wrote to her mother she describes Erza as cool, beautiful, warm and full of passion) She is someone relied on by everyone and capable of keeping the chaotic guild under control with one glare.
- Yomi to Kagura in Ga-Rei -Zero-. Even after a barrage of very awful tragedies she's still a Cool Big Sis, to the bitter end.
- Rin Ataka from Gasaraki is arguably one of these too, she even goes so far as to sneak off of a military base despite being detained in order to check if Yushiro is okay.
- In Girls und Panzer, the Little Army prequel manga reveals that Nishizumi Maho, who otherwise seems like an Expy of Teru from Saki, is actually quite close to her younger sister Miho, and that the aloof behavior she often displays in the anime is actually a jerkass demeanour brought on by having to be the ideal Nishizumi heiress, which she does so that Miho will be free to live her own way.
- Pravda High's second-in-command Nonna has this dynamic with her direct superior Katyusha. One need only look through the non-action scenes Episode 9 for proof.
- GTO: The Early Years: Ryuji is on better terms with his sister Yoko than the rest of his family, and she lets him and Nagisa stay at her apartment for a while.
- Kazumi Amano from GunBuster may very well be the Trope Codifier for Anime.
- Gundam:
- Christina Sierra from Gundam 00 isn't the sister of either Feldt or the Gundam pilots, but treats them as if they were her siblings.
- She possibly caught that from Catherine "Cathy" Bloom, the cool big sister from Gundam Wing. Who's confirmed by Word of God to be the long lost older sister of the Gundam Heavyarms's pilot, Trowa Barton.
- Toniya from After War Gundam X plays this role towards Tiffa and Garrod (and even ships them together).
- Definitely related to above, this is very strongly invoked by Mirai Kamiki from Gundam Build Fighters Try, the older sister of one of the three main characters, Sekai Kamiki. Not only is she beautiful to the point of charming almost literally everyone who sees her, she is also very supportive of whatever her little brother takes interest in, be it martial arts, or toy battles. That said, when he gets himself into a police station or gets distracted away from finishing transfer student registration, she does show some stun side.
- Yoshiyuki Tomino is supposedly trying to invoke this with Aida in Gundam: Reconguista in G.
- Triela fills this role in Gunslinger Girl, despite not being related to any of the other protagonists. She seems a bit older than the other cyborg girls and her introductory scene involves her bucking up a depressed Henrietta when the latter stuffs up on a mission. Sixth Ranger Petra, despite being the most teenage, does not apply here since she doesn't even interact with the others, being the next generation of cyborg.
- Fasalina in GUN×SWORD is amongst the antagonist's group, however she seems fond of newcomer Michael and if he's not being guided by The Claw, he goes to her and she teaches him. It doesn't excuse her position as a villain though, making her a rare villainous Cool Big Sis.
- Though only one year older than the rest of the main cast of Hayate the Combat Butler, Maria seems to be the holder of this title.
- While Yukiji is better known as an irresponsible Hard-Drinking Party Girl and older than most, she has shown to have this side to her, mostly to her younger sister.
- Kiruko from Heavenly Delusion is this towards Maru, a boy she was hired to protect as his bodyguard while they travel to a place called “Heaven” in a post-apocalyptic Japan. Kiruko enjoys sharing her knowledge of surviving on the road with Maru, which over time earns his affection and leads to him nicknaming her “Sis.” Though given his declaration of love towards her later on, he’d upgrade their relationship in a heartbeat if she was willing.
- Hello Sandybelle: Sandybelle is this to the rest of the children of Scotland. Even the bullies want to befriend her. When she moves to London, she befriends an orphan boy named Ricky Kentle, who strives to help her journalist career.
- Hetalia: Axis Powers has several, actually:
- Hungary, before she "graduates" into Team Mom and marries Austria.
- In Finland's notes, Belgium is hinted to be a Cool Big Sis too, but she has only had cameos so far. Confirmed in the published manga
, so much that little!Romano gets a Precocious Crush on her. - Ukraine might qualify as this, but both her younger siblings Russia and Belarus are Yanderes and she's very much a Shrinking Violet. Russia does seem to consider her as one, considering his genuine affection for her and how fondly he remembers their childhood.
- Vietnam tends to get this treatment in fanon, and shows shades of this in the 2011 Bloodbath when she takes charge of the girls' meeting.
- Is the Order a Rabbit?'s Cocoa tries to act like one. Though it doesn't work very well on Chino, Megu seems to buy it.
- Kaguya-sama: Love Is War:
- While their relationship is officially that of a valet and her mistress, Hayasaka acts this way for Kaguya (even though they're the same age) and even refers to her as a little sister on several occasions.
- Fujiwara is also this for Shirogane's younger sister due to the latter's friendship with her own sister Moeha, much to Kaguya's jealousy.
- Kaguya develops this sort of relationship with Ishigami as the story progresses. Maki also acts this way towards him, as befitting her role as Kaguya's Shadow Archetype.
- Cathy Taymor and Pamela from Kaleido Star. Sarah Dupont is both this and the local Team Mom.
- So far, Eva from Karneval is one to some extent, being reliable during a crisis, especially when Tsukumo-chan is concerned, although the guys are pretty scared of her.
- Katri, Girl of the Meadows: Maruti is a carefree idiot from a rich family, but he befriends Katri, a Farmers Girl from the rural Finnish village of Palki. He then decides to emulate her because he's impressed by how hardworking she is, and surprises his whole family by improving his grades at school. Even his mother didn't believe her son turned over a new leaf because of Katri's influence.
- Kill la Kill: Satsuki Kiryuin gets this trope as a part of her character development. Made even more meaningful by how a good part of her cold and ambitious behavior came from her swearing revenge on her Almighty Mom, Ragyo, for experimenting on Satsuki's newborn little sister and throwing her away for dead when said experiments didn't work. Said sister? Ryuko, of all people.
- In Kiki's Delivery Service, Kiki has a bout of insecurity and loneliness when she loses her witch's powers. One of her friends, a young painter named Ursula, invites her to stay in her forest cottage and helps her mental block.
- Natsumi Hayama from Kodocha used to be a Big Sister Bully to her brother Akito since she blamed him for their mother Koharu's Death by Childbirth, but becomes this after her Character Development.
- Lady!!: Sarah initially despises Lynn, her newfound half-sister from Japan, but Lynn views Sarah as the epitome of Ojou and strives to be like her.
- La Seine No Hoshi: Dalton views La Seine No Hoshi as a Little Miss Badass due to her superheroine shenanigans. In spite of being a little boy, he even helps her in many episodes.
- Love Me For Who I Am has Satori Iwaoka, the owner of Café Question. Satori's only sibling is Tetsu, but she often acts like a Cool Big Sis to the whole staff of the café, and as a Transgender woman she's often able to empathize with their issues and offer advice and support. In particular, when Mogumo's presence in the first volume leads to a rift between the staff over their standard "I'm a guy dressed as a girl" introduction, she encourages all of them to share their point of view on the issue to come to a compromise. This eventually resolves in Mogumo being able to stay in the café without compromising their identity and helps Mei realize she was a closeted trans girl.
- Lucy-May of the Southern Rainbow: Lucy-May and Kate both love to play rough and get messy, while their older sister Clara is more of a Proper Lady. Despite both being tomboys, they admire Clara, but she's an Aloof Dark-Haired Girl to them.
- Given the Central Theme of family and an incredibly large cast of female characters, Lyrical Nanoha has a lot of examples:
- The first example in the franchise is Nanoha's older sister Miyuki.
- Nanoha described Farin, head maid of the Tsukimura family, as being one for Suzuka. Suzuka's actual sister Shinobu is probably closer to an Onee-sama, but they are never shown to interact.
- Subaru Nakajima loves and admires her older sister Ginga. So do Cinque, Nove, Dieci, Wendi, and presumably Thoma (if they ever continue Force) once they're adopted.
- Alicia acted this way for Fate when the latter was trapped in a Lotus-Eater Machine. This relationship was carried over to the Magical Girl Lyrical Nanoha INNOCENT spin-off.
- Arf was somewhere between this and Parental Substitute for Fate back in the first season (since Fate was in desperate need of a positive influence), even though she's technically younger.
- Amy acted as one for Fate, even before they became sister-in-laws. Lampshaded in the the third A's Sound Stage.Chrono: In reality, you’re almost like Fate’s older sister.
- Vita acts as one for both Rein and Agito. The latter even calls her "Anego" which means "big sister", but it can also mean "boss".
- Caro stated in a episode of StrikerS that she's always viewed Fate as an older sister instead of a mother, probably due to the fact that there's only a 9 year difference between them.
- Multiple girls act as this for Thoma including: all six Nakajima sisters, Signum, and Alto.
- Several of the older Numbers act as big sisters for they younger ones, more specifically: Due for Quattro, Tre for Sette, Cinque for all of the ones that make a Heel–Face Turn (especially Nove), and Sein for Wendi.
- Nove pulls double duty as both this and Big Sister Mentor for Vivio and her friends, to the point that they name themselves Team Nakajima in her honor when they enter in the Inter-Middle Championship (despite her embarrassed protests).
- Chantez declares herself as such when she first meets Fuka since she's a sister of the Saint Church and Fuka grew up in a church run orphanage. Nothing ever really comes of it other than her teaching Fuka to swim in the third OVA.
- Madlax:
- Elenore is this to Margaret as well as being Mama Bear to her.
- Vanessa is this likewise to both Margaret and Elenore.
- In Magic Knight Rayearth, Presea the Ultimate Blacksmith is very affectionate towards the trio despite her habit of fantasizing about Disproportionate Retribution and Cool And Unusual Punishments. The anime has enemy dancer Caldina act as this to Ascot. In both versions, she becomes another big sister figure to the Magic Knights after her Heel–Face Turn.
- And in the anime, Presea's Angsty Surviving Twin Sierra also plays the role. While masquerading as Presea, that is.
- Michiko from Michiko & Hatchin eventually becomes one to Hatchin.
- Lucoa from Miss Kobayashi's Dragon Maid acts as one to Tohru... when she isn't undercutting her dignity by acting like a creepy pedophile. Tohru used to act as one for Kanna, but their current dynamic has shades of Promotion to Parent (though Kanna strictly views her as an older sister).f
- Kaya, more specifically, her alter ego Nagato-sensei, in Mugen Densetsu Takamagahara: Dream Saga.
- In My Hero Academia the mature Momo Yaoyorozu invokes this with the younger girls namely Ochaco Uraraka and Tsuyu Asui in Class 1-A, while Itsuka Kendo in Class 1-B is directly called out as her class' 'big sis' by Tetsutetsu Tetsutetsu.
- Mai Tokiha from My-HiME who, atypically for this trope, is a Shōnen series lead. She jokes about Shiho's Big Brother Attraction toward Yuuichi when they all first meet, stating that she (Mai, not Shiho) and Takumi are blood-related.
- In My Neighbor Totoro Satsuki is this for Mei (Hayao Miyazaki seems to like this trope).
- Naruto:
- Ino began as this to Sakura, protecting her from bullies and helping her to realize her potential. However, Sakura came to believe that she'd always be under Ino's shadow, and when they both started crushing on Sasuke she broke it off. After their fight in the Chuunin exams, however, they more or less mend their bonds.
- As time passes, Sakura herself evolves into one for Hinata and even to Naruto himself. The Last: Naruto the Movie has her helping Hinata reach her affections to Naruto, and then helping Naruto recognize the depth of Hinata's love for him to snap him out of his Heroic BSoD after Hinata is taken away.
- Negima! Magister Negi Magi has Negi's cousin Nekane filling this role whenever she's around. Kaede, Konoka, Akira, and Chizuru all fit the bill as well. On that note, most of the 3A girls can qualify at some point or another...
- Neon Genesis Evangelion: Misato Katsuragi tries to be one to her wards, Shinji and Asuka. Unfortunately, they are two severely traumatized kids, and her own issues made her hard to connect with them and help them. As a result of it, she failed them when they needed her the most.
- In Episode 16 of Nichijou, Yukko befriends the Professor and becomes this. The Professor adores her and, in a manga chapter, Yukko proves more capable than Nano at dealing with her temper tantrums and a Time Skip chapter has an adolescent Professor ecstatic on hearing Yukko is returning to Japan.
- One Piece:
- Not at first with Portgas D. Ace, who was more like an Aloof Big Brother to Luffy, but played straight with Sabo, who grew into this fairly quickly. Then, after Sabo's apparent death, Ace did take over the role for the rest of their childhood, and Luffy wholeheartedly considers him this by the present, and is so devastated when Ace is killed at Marineford that he goes into a Heroic B So D for days.
- Nami and Robin tend to alternate between this and the Team Mom trope. Nami is definitely the Cool Big Sis type to both Vivi, Chopper and Carrot while to the rest of the crew, she is definitely the Team Mom. Robin is the Cool Big Sis to Nami, and is often referred to as "oneesama" by Nami who hugs her frequently and goes shopping with her.
- Robin also treats the other males of the crew (besides Chopper) in this fashion: like goofing off with Luffy (even tickling him and Chopper), caring greatly for Usopp (ever since he saved her life in Enies Lobby) and putting a blanket over a sleepy Sanji in Filler despite him being a Handsome Lech to her occasionally. What Robin did to Black Maria who tortured and mocked Sanji in Onigashima was incredibly brutal.
- Nami also has Nojiko, her "sister" who was adopted with her by Bellemere, Nojiko is willingly to take a bullet for sister and when Nami was distraught about the tattoo that Arlong gave her Nojiko got herself tattooed so her sister wouldn't feels so different. The gold bangle Nami wears constantly after the Arlong Park Arc is from Nojiko.
- Luffy has Makino, who while quite a bit older than him, was one of the first friends he made in his life and helped look after him in Garp's absence.
- Viola to Rebecca though she's actually her aunt, she looks young enough to be her sister and cares greatly for niece to point where's Viola is comforting Rebecca as Domflamingo is forcing the latter to kill her thankfully stopped by Luffy. This care likely comes the fact Rebecca's mother Scarlet was a Cool Big Sis to Viola herself.
- Initially it seems subverted with Vinsmoke Reiju to her third brother Sanji as she did nothing to stop his brothers bullying him, only laughing at his misery and also putting explosive handcuffs on him so he wouldn't escape his Arranged Marriage years later. But of course subverted as Reiju does actually loves her little brother deeply and patched Sanji up every time his brothers brutalized him, she then freed him from his captivity and tearfully told him to escape to the East Blue. Years later she still is the only family member to treat Sanji with genuine affection, marveling over his newfound strengh and impressed by his chivalry. When she learns Big Mom plans to annihilate the Vinsmokes, she tells Sanji to flee, saying they aren't worth saving after how they've treated him as the White Sheep of the family. Sanji refuses, however, and rescues her during the wedding, knowing she out of all his family is Worth It. The explosive handcuffs on him are also fake.
- Reiju exhibits her care for Sanji through her other actions like how she kicks her youngest brother Yonji aside like he's dirt, but never so much as lays a hand on Sanji and kills Mooks who try to shoot him down while he's flying away.
Reiju: Anyone who touches my little brother will have to answer to me - Charlotte Smoothie while very nonchalant most of the time will act aggressively to anyone who hurts her younger siblings, as in the anime when Reiju poisoned Mascarpone and Joscarpone, she quickly used the her powers to wring the poison out of them and attacked Reiju in revenge.
- Charlotte Linlin AKA Big Mom used to be this to Kaido during his early pirate career. When Kaido joined the Rocks Pirates at the age of 15, the 24-year old Lilin immediately offered to him of becoming his confidant on the ship. She's also the one who obtained for Kaido his Devil Fruit six years later. In the present, the two of them have become equals as two of the reigning Emperors until their defeat, although the way they talk to each other is still the same as during the days of the Rocks Pirates, with Big Mom calling Kaido "brat", and him calling her "old hag".
- In Overman King Gainer after she switches sides, Adette eventually becomes this role, well after she stops sleeping. The Siberian Railroad even still calls her Big Sis while she's attacking them.
- Pokémon: The Series:
- Kasumi (Misty) has not one, not two, but three Cool Big Sisters, actual sisters at that. She doesn't exactly idolize them, though, getting along only with the eldest of the trio.
- A more straight example is Lady of War Soledad (Saori) from Advanced Generation, who acts like a cool big sis to May and Drew.
- Zoey/Nozomi tries to act like this for Dawn/Hikari, but ends up looking like something else.
- Dawn's Togekiss, who acts in this role towards Piplup. This is mainly seen by Togekiss deflecting wayward Draco Meteor attempts back at Ash and Gible to keep them from falling on Piplup, and scolding Gible for repeatedly hitting Piplup.
- Ash's Snivy fills the role for the Unova gang. She's always watching out for them but would rather stay out of pointless squabbles. She also developed a rivalry with Iris' Emolga because of a personality clash.
- In X and Y, Serena fulfills this role for Bonnie and later Mairin.
- Mallow's normally aloof Tsareena acts particularly gentle towards Shaymin. Mallow even directly compares to her a "big sister" in this regard.
- In Pokémon Adventures, Blue probably sees herself as Silver's older sister-type figure (though shippers say that Silver feels something a little bit more for her). She also occasionally looks out for Yellow.
- Technically she's the cousin of Ryoma Echizen, but otherwise Nanako Meino fits the trope to a T in The Prince of Tennis. And there's also Fuji's EXTREMELY hot sister Yumiko.
- Emma in The Promised Neverland, as well as her younger "sisters" Anna and Gilda. Krone was shown to have this quality in her youth as well. Deconstructed in that the organization that raises them specifically looks for that trait in "Mama" candidates, who are essentially the sheepdogs and brood mares for their People Farms.
- Puella Magi Madoka Magica has Mami Tomoe who has a protective, motherly personality towards rookie magical girls. Most adaptations and timelines show her in this relationship with one or more of them. However, in one timeline she murdered The Team because she learned the Awful Truth, crossed the Despair Event Horizon, and decided this was the best course of action, viewing it as a Mercy Kill.
- The Spin-Off Puella Magi Oriko Magica has Kyouko accidentally being one to Yuma. Despite Kyouko's lack of morality.
- In Ranma ½, though she ends up playing the Yamato Nadeshiko so straight she becomes a parody of it, Kasumi Tendô is a gentle, kindhearted woman who holds the Tendô household together, always tries to comfort her family, thinks the best of others and displays a subtle comic wit, often trying to pull off a one-woman Boke and Tsukkomi Routine. Akane Tendô, her Tsundere little sister whom she helped raise, adores her "Kasumi-neechan" and desperately wants to be like her, but without giving up her martial arts abilities.
- Michelle Cheung, the eldest of the three Paper Sisters from Read or Dream/R.O.D The TV.
- Rocket Girls: Akane strongly views Yukari this way, impressed and inspired by her upperclassman's feats as an astronaut to apply to the Solomon Space Association herself. Most of the latter half of the series focuses on Yukari coming to embrace the role, centering around a promise she makes to the physically-weak Akane to personally take her to space and show her the beauty of the view from orbit.
- Tae Sekihara in Rurouni Kenshin, who counsels her friend Kaoru and takes Tsubame under her wing.
- Ryu's Path: Maria is a badass astronaut and knows how to wield guns. She's been fighting off mutants to protect her little brother Jimmy ever since the two were rendered the sole survivors of the rocket accident.
- The Outer Senshi in Sailor Moon: Haruka Tenoh (Sailor Uranus), Michiru Kaioh (Sailor Neptune), and Setsuna Meioh (Sailor Pluto).
- Saki formerly saw her older sister Teru as this, but by the start of the series, after their parents' separation and possibly a death in the family, Teru refuses to speak to Saki or acknowledge their being related.
- Hisa, being the Club President and oldest member of the Kiyosumi mahjong club, serves this role to the younger girls, albeit girls who are not related to her.
- In Saki Shinohayu -dawn of age-, Mafuka Kasugai, an Idol Singer and Mahjong player, is this to Hayari Mizuhara, cheering her up with a magic trick involving a mahjong tile on two occasions.
- Shinshunki Miman Okotowari invokes the trope since the heroine, Asuka, aims to become this towards her recently found half-siblings Manato and Kazusa so they'll accept her in their family. Things get muddled, however, when she starts feeling attracted to Manato and he eventually reciprocates.
- Shigure Asa of SHUFFLE!, who is also a Genki Girl Bokukko to boot. And she's the one who gets the guy.
- Ayako of Slam Dunk personified this trope in the early chapters, being much more outgoing then the more moe Haruko. Later on she becomes more a Team Mom.
- Lin (Rin) in Spirited Away is not actually Chihiro's sister, but after a rocky start, she takes her under her wing.
- Super Dimension Fortress Macross/Robotech: Claudia acts as a big sister figure to Misa Hayase/Lisa Hayes, often by lending an ear when Lisa's stressed and needs to vent, and occasionally gives her relationship advice to help her get closer to Hikaru Ichigo/Rick Hunter. Though when it comes to her fellow Bridge Bunnies (Kim/Kimberly, Vanessa, and Shammy/Sammy), she's the Team Mom.
- Yoko Littner from Tengen Toppa Gurren Lagann becomes this after outgrowing her Tsundere stage early in the show, although she had hints of it from the beginning.
- Kamina acts as Simon's cool big bro note .
- Nathan from Tiger & Bunny is built on this trope, right down to his name (or, as it's pronounced in Japanese, Nee-San). The fact that he's male does not diminish it in the least.
- Override in Transformers: Cybertron fits the type even if she is a Giant Robot (and is only a girl in the dub). She even refers to one of the humans as "little sis".
- Meryl towards Milly in Trigun. Ironically, Meryl is half Milly’s size.
- Mai Kujaku/Valentine in Yu-Gi-Oh! to Shizuka/Serenity and, to a lesser extent, Tea/Anzu.
- Aki Izayoi (Akiza in the the dub) in Yu-Gi-Oh! 5Ds fits this, generally keeping track of Rua and Ruka/Leo and Luna after she outgrows her Dark Magical Girl leanings in the beginning of the show.
- A literal example (where she's truly the character's big sister) occurs in Yu-Gi-Oh! ZEXAL, with Yuma's sister Akari; given that the Intrepid Reporter trope could apply to her, she certainly qualifies. (Yuma is actually the first protagonist in the franchise to even have a sibling.)
- Kuwabara Shizuru in YuYu Hakusho, actually Kuwabara Kazuma's older sister, who seems to consider it her job to keep the younger (acting?) girls safe and upbeat. Urameshi Atsuko kinda shifts between this in the manga... she had Yuusuke when she was about fourteen (Yuusuke's same age), after all.
- Variable Geo: Satomi is a literal and borderline tragic example, given she's been left to support herself and her brother, Daisuke, since their parents deaths, years ago. She's held two jobs to make ends meet, which includes Daisuke's medical expenses, and goes so far as to submit herself to The Jahana Group for experimentation, after they offer to take over the costs of Daisuke's medical treatment.
- Voltes V: Even though they're not blood-related, Hiyoshi calls Megumi "Megumi-neesan" and views her as this. In part, this is because his actual big brother can be rather harsh on him during missions and Megumi often comes to his defense.
- Zoids: Chaotic Century: Moonbay is this to Van and Fiona, especially Fiona.
- Yugiri of Zombie Land Saga is the oldest, both by date of birth and at time of deathnote , and she seems to be the most level-headed of the zombies, even getting them out of their funk at times. The group as a whole affectionately refer to her as Big Sis Yugiri, and she is especially close to Lily.
