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    Video Game/Irisu Syndrome 
https://static.tvtropes.org/pmwiki/pub/images/phpdLJbEwPM.jpg
Meet Irisu, Bunnygirl Witch Extraordinaire!

A freeware Japanese puzzle game starring a cute bunny girl, Irisu Kyouko. There are shapes of various colors falling down. Use your mouse to launch white blocks to make the shapes collide with another of the same color to score points and regain health. Can be downloaded here, and there is a fan-made English patch here.

As you progress through the game gaining more and more points, you can unlock various scenes involving three university students out on a camping trip. Of note is an old story one of them tells about a witch in the area.

See also Ai To Yuuki To Kashi Wa Mochi, another puzzle game by the same creator.


This game provides an example of:

  • Alice Allusion: Irisu’s name is a reference to Alice — see Meaningful Name below.
  • All There in the Manual: Many, many things can only be read in the text files the game creates in your game folder as you continue to play the game. One, called irisu.txt, consists of just three vertical dots. A couple of the text files, including full profiles of all four characters, can only be found by extracting them from the data library (see Dummied Out below).
  • Anti Poop-Socking: Inverted. Go ahead, try to click away from the program and see what happens... but only when the game feels like it. The picture above pops up. It will only happen once, and only after you have played at least 12 rounds. Trying to alt-tab during gameplay will "break" Irisu's focus, causing the picture above to display briefly.
  • Arrange Mode: After clearing the main game, you unlock Metsu mode. As before, you go for a high score by clearing shapes, making combos, and not allowing the falling shapes to pile up. Metsu mode makes the following changes:
    • You now deal with circles instead of triangles. Circles rise from the bottom of the screen and are cleared in a different way than squares are cleared.
    • The area that holds shapes is bigger than before, but you can no longer knock shapes out of play.
    • You don't lose health over time.
  • Art Evolution: In addition to the nicer-looking interface, Metsu also has improved shading.
  • Batter Up!: It's actually bread. Irisu's actual weapon of choice is a makeshift blackjack made of one of her socks stuffed with rocks, not a bat.
  • Big Bad: Irisu Kyouko, the deranged bunny girl Villain Protagonist out to murder Edogawa and Ageha, seems to be this at first, but it's actually Uujima Satoshi who is pretty much responsible for the plot, manipulating her into carrying out his twisted desires to kill the three of them including himself (though it’s also implied that the spirit of U-tarou, Irisu’s dead bunny, is influencing Irisu).
  • Big Bad Friend: Uujima Satoshi, who started the events by decapitating Irisu's rabbit after it died. His reaction to discovering Irisu is plotting to kill his friends? Find a way to get her to kill him, too.
  • Bullying a Dragon: Intentionally done by Uuji, accidentally done by Ageha (she tells Irisu off during the good ending for basically stalking Uuji).
  • Bunnies for Cuteness: The titular Irisu, who loves bunnies and has them as part of her aesthetic! She's not as harmless as she looks, though.
  • Break the Cutie: Irisu goes through quite a lot. She was alone for most of her elementary school life, and the one friend she did have, U-tarou the pet rabbit, is brutally killed and decapitated, leaving Irisu to find its remains.
  • Cats Are Mean: Irisu thinks so. She hates cats more than anything else after seeing a cat lick the blood from the school rabbit's severed head. The game doesn't really hint whether this trope is truly in play or if the cat was just following its instincts. There may even be a bit of an aversion, as the cat and rabbit apparently got along just fine while the rabbit was alive and would even play with one another through the fence.
  • Death Seeker: Uuji purposely plans to set Irisu off so she would kill him.
  • Demonic Possession: Heavily, heavily implied to be the source of the above images and the ultimate cause of everything. The spirit of the bunny isn't happy that Uuji got away with murdering it, isn't happy that it was forgotten, isn't happy that Irisu's being mistreated... The Stinger is named U-tarou, just like the original bunny, too.
  • Driven to Madness: A horrifically realistic portrayal, as Irisu spirals out of control during the game's events.
  • Dummied Out: Several hidden text files and images were included in the game's data files but never referenced or unlocked. These include profiles, character design sketches, and Irisu talking about the block-destroying game that she plays to keep sane, named uutaroutherabbit.txt.
  • Dysfunction Junction: Irisu is seriously messed up, but you find out later that Uuji is infinitely worse.
  • Earn Your Bad Ending: The final unlockable in normal mode implies that Irisu found the suicidal bunny pictures and became mad again. However...
  • Earn Your Happy Ending:
    • The game is something Irisu plays with herself to keep calm. Score below 20k, and she'll end up going berserk and most likely killing everyone. Score over 20k, and she'll tear right through the 4th wall to attack Ageha anyway... Except it turns out the whole thing is just a really weird surprise party setup by Irisu. (Although it's heavily implied she goes after Ageha anyway.) Score over 50k in the new New Game Plus Metsu mode, and Irisu will start dressing normally, and the trio — now a quartet — will pose for a picture.
    • Arguably, also the case when you reach level 100 in Metsu. The smile she gives the camera is sweet and genuine.
  • Endless Game: Normal mode goes on for as long as you can endure. Metsu mode ends at level 100.
  • Evolving Title Screen:
    • When you get the good ending, hold down the spacebar and the background's particle effects will begin to go much faster before it turns into a description of the events where Uuji murders U-tarou, written from Irisu's perspective.
    • The next change happens once you unlock Metsu mode, where an icon of a cat's decapitated head will appear on the bottom right corner of the screen. Clicking on it takes you to Metsu mode, which also changes the title screennote . The Album option is also gone in this mode.
    • The final change occurs when you reach Level 100 on Metsu, where Irisu is shown smiling and looking towards the screen, and the same description from before is in the background.
  • Expansion Pack: Metsu, an updated version with an alternate gameplay mode and updated graphics.
  • Falling Blocks: You have to use your mouse to get the falling blocks to hit another of the same color before they're "set" on the ground. Alternately, get two or more falling blocks to touch each other in midair, and they'll glow and give you a bigger bonus.
  • Flashback Cut: After unlocking Metsu mode for the first time, a quick series of frames depicting the cause of Irisu's insanity appears before some exposition.note 
  • The Fourth Wall Will Not Protect You: In the "Good Ending", Irisu sneaks up on Ageha by walking into the empty cabin (and the game window) from across your desktop.
  • From Bad to Worse: Metsu mode reveals that Irisu's not the only insane person. Presumably the 100k stinger from normal mode will still affect Irisu after the end of Metsu mode. Uuji has settled for a happy ending — he's getting Ageha and Edogawa together, Irisu has calmed down and has joined the circle of friends, everything is ok, right? ... Unless Irisu happens upon the notepad he wrote in middle school confessing to decapitating her bunny, or finds the bunny-suicide image that he intentionally created to drive her insane. Not only that, she appears to have drawn a demonic, bloody bunny on the image.
  • Game-Over Man: Irisu greets you every time you get a game over.
  • Girl with Psycho Weapon: Irisu and her nail bat, which is actually bread. Her actual weapon during the bad ending is a sock full of rocks, the one she's holding in the title screen.
  • G-Rated Drug: Irisu becomes addicted to a cough medicine containing codeine and ephedrine, a presumably effervescent "white powder" she eats straight from the packet. By the diary entry describing her habit, she's up to thirty a day.
  • Guilt-Based Gaming:
    • Clicking away from the game window will "break" Irisu's focus.
    • Also, not scoring well enough in the first half of the story will eventually cause Irisu to cry, and failing three times will lead to the first half's Downer Ending.
  • Interface Screw:
    • Clicking away from the game window will sometimes show this.
    • During the good ending, Irisu walks across your desktop, weapon in hand and ready to kill Ageha.
  • Idiot Hair: Ageha has two, but she's not really that much of an idiot, being more of a Genki Girl.
  • Kindhearted Cat Lover: Ageha adores cats, and the other characters mention once or twice how she reminds them of a cat.
  • Loners Are Freaks:
    • As explained in Metsu mode, Irisu isn't the only unhinged loner. Uuji is revealed to be a psychopath who draws pictures of suicidal cats for fun, and he was the one who decapitated the already dead rabbit nursed by his middle school class because he felt it had been ignored all its life, and the gruesome scene would help his classmates remember it. Later on he discovers Irisu's plan to murder the other two so she can be with him and tries to find a way to get her to murder him as well.
    • Irisu as well, but she went the other way around — she was normal, but shy — until the traumatic events with the bunny.
  • Love Makes You Crazy: The events of the game were touched off when Irisu got jealous of Uuji gaining (unwanted) friends, and decides to murder them so she can be with him.
  • Love Triangle: Edogawa has a crush on Ageha, who is hinted at having a crush on Uuji, who is in love with Irisu, who is also in love with Uuji.
  • Man Behind the Man: The game hints that spirit of the dead rabbit is deliberately manipulating Irisu into killing Uuji and his “friends.”
  • Maybe Magic, Maybe Mundane: There are hints that the murdered rabbit's spirit could be responsible for the events of the game, but these hints are faint enough that a totally mundane explanation also works just fine.
  • Meaningful Name:
    • "Irisu" is just one syllable off from, and a slight mispronunciation for, "Alice". Automated translators such as Babelfish and Google Translate even change "Irisu" to "Alice". Her name is also composed of the characters for "enter" and "a nest".
  • Mind Screw: Subtle, but it's there. During gameplay, text files will appear in the game's directory, picture files can be modified depending on how you score, background wallpapers changing, etc.
  • Multiple Endings:
    • Bad ending (lose 6 times in a row without scoring enough points): Irisu snaps, killing the 3 protagonists. The ending consists of Irisu sitting in her room in the dark, listening to a news report about Edogawa's body being found.
    • Good ending (scoring 20,000 points): Irisu calms down, and instead of killing the 3 protagonists, she convinces Edogawa and Uuji to "disappear" and comes back to scare Ageha (and the player). However, afterwards it turns out that Irisu's "plan" was just a surprise birthday party for Ageha, and she and Irisu have a heartfelt discussion. (The original stinger insinuates that she still has major issues with the cat-obsessed Ageha, given the fact that she ends up erasing her face from the photo between this and Metsu.)
    • Original Stinger: Get 40,000 points in Irisu Syndrome after getting the good ending to unlock Metsu mode. You get a new text file, and Ageha's face in the photo is whited out.
    • Extra Stinger (100,000 points in normal mode before playing Metsu): Irisu finds the bunny suicide picture, presumably after the good ending. She scribbles a demonic bunny on it, with glowing, hate-filled red eyes. It is titled U-tarou.png, the same name as her killed bunny. It is possible that she went insane again after seeing this, and that the three friends are screwed.
    • Metsu ending (Get all of the journal entries on Metsu's title screen, then get 50,000 points in Metsu): Uuji decides to work his best at getting everyone together, although he's not sure he is happy with the situation. Ageha and Edogawa are starting to fall for each other, and with his help, Irisu has joined in with the group as a new friend, and Edogawa and Ageha are now performing their "no Hikikomoris allowed" policy on her. It's insinuated that someone found his journal about the bunny, but this has little effect on the overall plot.
  • Murder the Hypotenuse:
  • New Game Plus: Beating the game unlocks Metsu mode, which plays hell with the rules. New bubbles float up from the bottom, which supplement the rubble on the ground. In addition, you can no longer launch trash out of the screen to get rid of it. More story explanations are also given as you play.
  • Nightmare Fuel Coloring Book: Uuji's sketches of suicidal cats, which he excuses as trying to emulate a European cartoon book, The Book of Bunny Suicides.
  • Nintendo Hard: The game is a simple, but incredibly tricky puzzler, whose difficulty increases the longer you play, and if you don't know what you're doing your game will end very fast.
  • Non-Indicative Name: The word "Metsu" means various negative things such as "destruction", "doom", and "ruin", but while Metsu mode has a darker feel, playing through it only gets you explanations and good outcomes for the story.
  • Nothing Is Scarier:
    • During the good ending, the music suddenly stops.
    • Irisu.txt, the text file describing her, consists of nothing but "..."
  • Oblivious to Love: Horrifyingly subverted. Uuji recognizes Ageha has a crush on him, but is annoyed by it more than anything else, recognizes Edogawa is in love with Ageha and wishes he'd take her away, then realizes that Irisu is in love with him and she's completely out of her gourd... which he finds cute.
  • Older Than They Look: Although the characters are university students, the cutesy art style makes them look as if they're still in junior high.
  • Oblivious to Love: Uuji recognizes that Ageha has a crush on him, but is annoyed by it more than anything else.
  • Painting the Medium: Text files appear in the game's directory, and an included picture of Edogawa, Ageha, and Uuji is modified to reflect how the story progress.
  • Pair the Spares: In the best ending, Uuji decides to try to get Ageha and Edogawa together, since they make a much better couple than himself and Ageha, which also leaves him available to date Irisu.
  • Puzzle Game: Incredibly simple, involving destroying colorful blocks to rack up points, but still very hard.
  • Quirky Work: If you can't read Japanese, you can still play it, but you will miss out on the story. Fortunately, someone already made a project to translate this game in this link. Here is the latest patch.
  • The Reveal: In the original game, we learn that Uujima is the unfortunate victim of Irisu's affections, and only because he draws pictures of cats dying in gruesome ways, which he claims he's only drawing in the first place because he's trying to imitate an actual European cartoon book. However, Metsu reveals that Uujima is the real villain; he knew about Irisu's affections towards him and her plot to kill Ageha and Edogawa, and he purposely drew the picture of the rabbits dying to set her off. It's also revealed that he's the one who decapitated the already diseased rabbit that Irisu took care of in her childhood, scarring her and kickstarting her downward spiral.
  • Scary Surprise Party: The good ending turns out to be this. Happy birthday, Ageha! Haha, that sure was some prank, huh?
  • Scoring Points: The game is based around doing this - many events, including unlocking Metsu mode, are only triggered by reaching certain score thresholds.
  • Self-Harm: Uuji's internal monologue in one of the text files implies that he does this.
    "It's a matter of time before they think it's strange for me to always be wearing long sleeves. It's not something small enough to hide with a watch. And when those people realize it, I'll automatically be estranged from them. Until that time, I'll let them misunderstand. I enjoy being with them."
  • Sequel Hook:
    • Uuji's commentary during Metsu's Golden Ending suggests that he's not 100% happy with how things turned out.
    • Mentions of Irisu Syndrome Kai (aka Irisu Syndrome: Solution) are sometimes thought to be confirmation of a sequel, but it turns out Kai was just the working name for Metsu.
  • Stalker with a Crush:
    • Irisu is convinced that she and Uuji are soulmates because she chanced to see some doodles on his notebook, depicting cats killing themselves in various ways. Uuji reads in her diary/notepad that she feels their relationship is going forward quite well despite them never speaking to each other.
    • Metsu reveals that Uuji also has a stalker-like crush on Irisu, filtered through his own personal insanity: He finds out that she wants to kill his friends, and wants to try to get her to kill him, too.
  • Start of Darkness: Metsu mode serves as this for Irisu and, to a certain point, Uuji, explaining what happened with the bunny and the "plan", and so on.
  • The Stinger: There are multiple throughout the game:
    • After getting the good ending of the original game, the background of the main menu is replaced with Madness Mantra scrawl after a certain amount of time has passed. (This can be forced by holding down the spacebar, which causes the game to run at max speed.)
    • After the good ending, get 40k points on normal mode and Ageha's picture gets whited out. This subsequently unlocks Metsu mode.
    • Get 100,000 points in normal mode before playing Metsu and there will be a new picture in the game folder, of "Bunny Suicide" doodles... which Irisu apparently found. It's splattered with blood, the tortured bunny has had glowing red eyes drawn on top of it... and Irisu has drawn a demonic bunny coming out from the bottom of the page, with glowing, insane eyes.
    • Getting to level 100 in Metsu Mode causes Irisu on the title screen to start smiling, and the round to end immediately.
  • Shout-Out:
    • Edogawa always wears a shirt with a design on it, each design referring to another game by the same creator. The one he wears during the camping trip is a rendition of the Mother 2 logo reading Ma Mo Mo (short for Maou Monogatari Monogatari). In the "photo" in the game folder, his shirt shows the characters from Ototsukai, while another shirt in the Metsu ending references Ai to Yuuki to Kashiwa Mochi.
    • The game references the Suicidal Bunnies books by Andy Riley, though he's only referred to as "some foreign cartoonist called something-or-other."
    • A few of the suicidal cat doodles also reference Ma Mo Mo.
  • Shrinking Violet: Initially, Irisu is very shy and always by herself. An attempt to cure her of this by murdering her pet rabbit, accidentally leaving the head for her to find kickstarts the events depicted in the game.
  • Spooky Photographs:
    • The game comes with a picture of the trio in the game folder. As you progress through the game, the picture is altered. The game's bad ending results in all three of their faces scribbled out in black, while getting the good ending returns it to normal. That is, until you unlock Metsu mode, after which Ageha's face will be whited out.
    • The Stinger reveals a picture of tortured stick figure rabbits, the drawing Uuji used to send Irisu over the edge in the bad ending... only with a big black X marked through it. Looking at the picture from a distance reveals a larger drawing of a demonic rabbit.
  • There Are No Therapists: It's unknown if Irisu got therapy after what happened in middle school, but given the fact that the game takes place in Japan... she was probably left to her own devices instead. Also no word on if Uuji was getting help, but Ageha does call him out on his creepy cat drawings once she feels comfortable enough around him. This turns out to be a very bad idea.
  • When She Smiles: Irisu gives a sincerely happy smile when level 100 and the subsequent Golden Ending are reached in Metsu mode.
  • Wham Episode: Before Metsu's release the game had very little explanation, just that Irisu occasionally snaps, and the two endings switched between her murdering everyone and her not murdering everyone. Metsu unveils the rest of the story.
  • Why Did It Have to Be Snakes?: Irisu really hates cats due to her happening upon her pet rabbit's decapitated head being licked by a cat. Her seeing Uuji's "The Bunny Suicides with kittens instead" drawings is what causes the game's events.
  • Yandere: A rare two-way example. Irisu is insane due to her pet rabbit being horrifically murdered; Uuji is an apparently natural psychopath who wants Irisu to kill him out of some sort of twisted sense of romance... and who decapitated said pet rabbit after its death, wanting people to remember it after its passing. Both are, at first glance, perfectly normal, albeit somewhat shy.

... Wait, where'd Edogawa go?

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