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Tsukaruiverse One-Shots Collection by yaoipilledblmaxxer
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
08 Feb 2026
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Summary
a collection of Seven one shots set across a bunch of different AUs :]
the tags will be updated the more chapters i add. set across a few different AUs, so please check the notes for which tags apply to which chapter! The current chapters are:
1. Kuroshiro
2. Ouroze
3. Nakashira
4. Sorcevalier
5. April Fool's 2025 -
I have to get two of my friends together or the world will end?! by Fio09
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
03 Feb 2026
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Nene Kusanagi is a normal girl, who goes to school like everyone else. Well, at the very least she WAS normal, until she gets hit by a car, and gods, apparently, decided to send her on a mission of setting up her two close friends together! Will she be able to achieve that? Or she will fail miserably and doom the whole world?!
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Torturing Kamishiro Rui by Ilikeruiandtoya
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
02 Feb 2026
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no summary. I wrote this bc I'm messed up in the head and bored in school
(WARNING!! this fic includes rape/non-con, graphic descriptions of violence and, major character death, If you don't like these, don't read it.
things such as cussing and implied slurs (though there are none in the fic) are present, child abuse and emotional abuse is also present, still, if you don't like these don't read. but don't be shy twin ! !)Series
- Part 1 of Ruitorture
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It’s My Treat! by fixeruikasa
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
01 Feb 2026
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What would happen if a pent-up baker got a sudden lusting for his pretty husband?
Luckily, Tsukasa has some aphrodisiacs on hand.
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The Writhing Flesh by Cosmo_sage_mage
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
27 Jan 2026
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Rui is accepted and cared for but he cant quite find anyone who understands the hellish mental body horror of being trans he goes through, personally. He doesn't have the words for it.
//Emetophobia warning, this story talks a lot about skin, flesh, and body horror as a comparison for being transgender.
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Chat Name: UMAUMAUMAUMAPYOI by Stars_In_Our_Paws
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
26 Jan 2026
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One sleepless night, Mizuki and Ena's bantering leads to a very spiteful Mizuki gathering up all the various numbers of those she calls close. And to prove a point, she sticks them in a groupchat.
Surely this won't backfire, right??(surely it won't end up revealing the most precious secret of her and Rui, right?)
[Umamusume AU, ft. transfem Mizuki & transmasc Rui as they go through the HorrorsTM (being trans in a world that will deny your existence) and also just a lot of self imposed chaos)Series
- Part 2 of Of Divine Intervention and Love
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my whole existence is flawed; you get me closer to god by tacobellrui
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
13 Jan 2026
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"Ah, it seems the almighty Sir Tenma can only hold off on his desires for so long," The sorcerer giggled, voice slurred as he leaned back against the dirty cell wall.
Or, Kamishiro and Tenma find out what it's like to let go of one's inhibitions.
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In front of my mom!? by Miss_DLV
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
10 Jan 2026
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“Eh–!? Why'd you suddenly bring that up…”
Tsukasa's face immediately goes red as Rui straddles himself on his lap, then rolling his hips on Tsukasa's crotch. “Mom and dad won't bother us for the rest of the night, why don't we have a little bit of fun~?” Rui throws his shirt over his head and somewhere on the bed. Since they were cuddling, Rui didn't care to leave his binder on, discarding it a while ago.
Tsukasa’s eyes go from his face, his chest, back to Rui's face, the boy's crotch, and then back up to be met with a smug grin, looking like a damn cat. “I-Isn’t that a little bit risky–”
Series
- Part 33 of MissPrivatesSecretCollection♡
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Took You Long Enough! (REPOST) by 10ma
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
07 Jan 2026
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welcome back Took You Long Enough!!!!!! but with changes because. well. yeah.
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For their third date, Wumuti invites Rui over for movie night.
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warm between my palms, cup you like a handful of holy water by bunnytorpekun
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
31 Dec 2025
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"I may be wrong, but I'm quite certain you do like it when I cling to you," Rui says, reaching between their bodies and squeezing Tsukasa's dick over the fabric as to emphasize his point. "Were you just trying to rile me up, Tsukasa-kun?"
"You're putting words in my mouth," Tsukasa murmurs, narrowing his eyes at Rui. "And what's with that face, huh? I said I could've slept better, not… not that I don't like it or that it's a bad thing!"
And truly, Tsukasa might be in heaven, for the feast before his very eyes couldn't get any more inviting.
Tsukasa and Rui spend some quality time first thing in the morning.
Series
- Part 19 of ★ㅤbunnytorpekun's 🌟🎈 collection
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Cemetery Weather by aspennn_1
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
27 Dec 2025
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On dark and gloomy days, preferably in December, a wish comes across the minds of two teenagers.
These teenagers want to die.
Would they act upon it?
...
Certainly one of them would. -
Worst Excuse Ever (Best Break Ever) by orphan_account
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
17 Dec 2025
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Tsukasa finds himself deeply considering fleeing the country after accidentally agreeing to bring a date to an upcoming family vacation, when he has, in fact, been single his whole life.
However, he comes up with a possible solution that might be just ridiculous enough to work. He finds himself someone to pretend to be his pretend-partner, bring them along for the two weeks, and then end things with a pretend-breakup. And there’s only one man for the job—his roommate, Rui Kamishiro.
…He’s doomed.
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Or, a very lighthearted Ruikasa college AU fake dating fic.
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Pent Up by kasakiss
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
15 Dec 2025
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"" "I was just very excited and I'm really pent up, okay!!" The dragon whines, previous shame turned into a rather pathetic pout as he gives puppy eyes to the sorcerer. "I haven't fucked Rui in days and it makes me really sad, so I was really excited to have you!!" ""
When a dragon suddenly appears in his small cottage, Rui is initially rather afraid. Until he comes to find out the dragon is a pathetic man with sex at the forefront of his mind at all times.
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We came across each other, just like constellations by Ryomme
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
11 Dec 2025
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Life can deeply hurt everyone. Mizuki unfortunately knew it too well. Every day was slowly biting off her soul until nothing but a hollow imperfection remained. When life gave her last push, she decided to finish it. One jump, it was all that it took.
However closing her eyes wasn't an end of her story. In fact it was actually a begining of something unexpected. A fresh start.
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On that night I was gazing at the dancing stardust by 39SM1LE
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
04 Dec 2025
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Two nights. Two nights before the 1000th dream.
It's been 998 days that Rui dreams of the same girl. Two years, eight months and twenty-three days, he has noted every night he dreamed of her.
And she has never stopped appearing since that day.They said it's his traumatic coping mechanism and he ended up believing them.
Until this one day. The day she stopped being a coping mechanism and became real to him.
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What am I? by enbyeonjvn
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
01 Dec 2025
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Summary
After a specific comment made by an audience member, Rui becomes confused about his gender identity and he doesn't know what to do. After getting some advice from Mizuki, he learns something new about himself.
Tsukasa, being the perfect boyfriend he is, notices and decides to help him out!
Series
- Part 4 of 5 pages & less
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Writing AkiRuiKasa because I got inspired off my Playlist of AkiRuiKasa songs and because I didn't get Kasa4 cards or Aki6 cards, imagine being sad could not be me.. totally-! Anyway....enjoy the writing ihh yeah.. I got jesterkasa tho, I also have 4 ruis by Ilikeruiandtoya, ToyAkito26
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
29 Nov 2025
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Idk
Series
- Part 1 of ilikeruiandtoya's AkiRuiKasa
- Language:
- English
- Words:
- 2
- Chapters:
- 1/1
- Kudos:
- 2
- Hits:
- 56
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Darling, I'd Wait For You (Even If You Didn't Ask Me To) by aspennn_1
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
11 Nov 2025
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Pure Ruikasa fluff!!
In other words, Rui and Tsukasa being deeply infatuated with each other and being affectionate :3
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If I Ever Catch The Ones Who Hurt You (I'm Hoping That God Looks Away This Time) by aspennn_1
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
05 Nov 2025
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Summary
Because of a conversation over text, Rui ended up in Tsukasa's arms during a particular evening where things weren't going too well for him.