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Can't You See, Tsukasa-kun?? (A RuiKasa|TsuRui Fanfiction) by worldfuture_star
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
20 Jan 2026
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There’s no doubt about it, just about everyone in Kamiyama and Miyamasuzaka alike has heard of the infamous Weirdo Wombo Combo. And even more so, the feelings that have come up between the two of them. Yeah, almost everyone knows about Rui’s —more than obvious— feelings for Tsukasa. Everyone, but Tsukasa himself. As you can imagine, Rui isn’t sure how to handle this, as he’s sure he’s made his feelings for Tsukasa…apparent. Luckily, (or unluckily, truly depending on how Rui looks at it), he practically has the whole school to help him out. It just depends on how oblivious Tsukasa really is. But honestly, just how much more obvious does Rui have to be! Can’t you tell, Tsukasa? Rui certainly hopes so.
(FIRST FIC ON AO3)
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Ginger Pork Sandwich by sillkyextxras
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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“I think I- like Emu.’ Tsukasa stammered, subconsciously biting his lip.
Rui didn’t answer, not immediately, he blinked slowly and set down his tray on the table, making barely a sound. He tried his best to smile, but it felt stiff, as if his eyes weren't a part of it. Looking up, he tried to force a reaction. He really didn’t wanna be a part of this.
Tsukasa raised an eyebrow, Rui’s silence felt a little too…weird, it wasn’t anything like him…at all.
“Ah,” He finally said something, “Is that so?..” his voice, quiet and careful, as if something was swallowing him whole, he couldn’t say why, but it's a little too soft.
He didn’t know why he was upset upon hearing that sentence. He didn’t even like Tsukasa, he never did like Tsukasa. so.. why is he so disappointed? Why does his chest feel so tight..?
OR:
Rui likes Tsukasa,
Tsukasa likes Emu, Oh no. -
Bleeding In A Puddle by Still_On_The_Bus07
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 Jan 2026
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Ruinene fic in progress
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Forever More by IntruderK
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
25 Dec 2025
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These couldn't be a coincidence.
All of these are definitely related.
Without a doubt, all of this was related to SEKAI.
I want them back.
I want them back.
... I want to go back. -
Say My Name, Say My Stupid Name by Nirvanuuh
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
18 Dec 2025
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“I already heard the announcement.”
That seems to make Rui instantly looked at her, with widen eyes.
“You did?”
“Yes.”
This is it. The countdown towards the prince’s hatred towards him.
⁜ OR
⌈ Four times the black lily should listen to his thoughts, and one time he does. ⌋ -
The Sorcerer, and His Dearest. by tenmakasa88
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 Dec 2025
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Forbidden love between the land's most feared and hated sorcerer, and the one pure prince that everyone seemed to love.
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Flying To Reach Somewhere by afanofSTUFFZ
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 Dec 2025
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Watching Hanasato on that stage had given Rui deja vu.
It was as if he were back in middle school again, in the audience with his eyes transfixed upon the play's heroine.
Hanasato, that spirited girl who had taken Tsukasa's - and the rest of the troupe's - advices to heart, had stood on that much less formal stage. Eyes darting about, her usual demeanor drained by performance anxiety.
A sparkle of hope became many as she began to sing. Off-beat, but eventually...
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After the events of the fan fiesta, Minori approaches Rui again with a seemingly small request.
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Preach To My Talentless Brain by monyu_mari for kuromicore
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
30 Nov 2025
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Kamishiro Rui gets a once-in-a-lifetime opportunity: to direct an opener at one of Shibuya's prestigious theatres. He takes this opportunity to share a story with the world -- a very personal one and dear to his heart
But the world of adults is filled with meaningless squabble, fights for authority and shallow metaphors. And now Rui has to oppose the troupe's arrogant start actor and his self-indulgent director, who underestimate Rui both as a director and as a creator.
In the midst of all this, his unspoken feelings for a certain boy threaten to completely disrupt his peace of mind, when the same boy desperately tries to crush the mental wall that Rui built around himself.
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Out Of All The Fireworks In The Sky, You Shine The Brightest In My Eyes by Junn_0102
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 Nov 2025
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Rui could feel his heart rush as he lifted his hands. He wanted to kiss him, how could he not?
" Tsukasa, " Rui called out softly, already leaning in.
Tsukasa turned around.
But before even a sound could leave his mouth, Rui cupped his cheek and pulled him in for a kiss.
The fireworks up in the sky sounded out as their lips met. It felt like a dream.
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.In which Mizuki hands Rui a poster about a summer festival happening this weekend in the hopes that her not so romantic friend can finally bring his equally not so romantic boyfriend out on a date that doesn't end in endangering the general public.
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Weirdo Wombo Combo argued because of a... SHOW IDEA!? by Myuto
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
16 Nov 2025
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“Fine! Do what you want!” Tsukasa slammed the notebook down on his desk before making his way to his own bed, hiding under the blanket. Rui was dumbfounded at his pettiness, wondering what he should do.
Series
- Part 6 of Rui's blue sweater
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"Rui? RUI!!" by caterpillar_juice
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 Nov 2025
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basically just ruikasa fluff, confessions, being flustered, and going on a first date!!!
my FIRST FIC GUYS!!!........ this sucks tbh
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Local Tour-Guide has an Alien Encounter! by DriftingZim
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 Nov 2025
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Tsukasa's voice was practically stuck in his throat. If not that, his brain was currently in overdrive trying to figure out exactly what to say about this situation. Typically, Tsukasa's reaction to high stress situations such as these would be between the usual fight or flight response. Unfortunately for him, the third option seemed to overpower the others. Freeze. All he could do in this moment was stare at the man before him, who thankfully kept his distance.
"Hm." The man's smile wavered a little as he observed Tsukasa's reaction, "Perhaps this way of going about things wasn't the best idea.. You have nothing to be afraid of, Tsukasa."
"How- how do you know my name??" Tsukasa finally sputtered something out.
"There's a lot I've gathered about you, Tsukasa! But that's not important right now."
Tsukasa begged to differ.
"How would you like to go to space?"
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Tsukasa learns that aliens are real in a way he couldn't have expected.(i suck at summaries im sorry uhhhhhh all of the above, also known as "i crammed two cards i like together and made a new flavor of ruikasa")
Series
- Part 1 of Spacewaffle Ruikasa AU
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I could never ask for anyone other than you. by starpyzz
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
14 Nov 2025
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During an unexpected visit from Rui, Tsukasa comes to realize his feelings for the director. But how will he react when Rui follows up with another unexpected action?
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A Ruikasa fanfic featuring some Tsukasa angst, water fights, the honorable gay supporting cast, Ena5 all over again and the downfall of the Tenma household !!!
This is one of my chatfic's ruikasa moments turned into a fanfic, basically a continuation of chap 7–10 from "Untitled Group Chat !! (chatfic)"
edit (17/11/25 - 2:20 PM):
guys watch out theres a huge gap in writing style especially between chapter 1-3 and 4-5 just saying -
Project: Forsaken by riveriskindacool1
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game), Forsaken (Roblox)
05 Nov 2025
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Guilt plagues Rui’s heart…With one messy break up that leads to the disbandment of Wonderlands x Showtime, Rui and Tsukasa are transported to the world of Forsaken. Rui is forced to survive rounds of generators he can fix in a split second and a mini robo-nene to do small but constant attacks on killers.
Like Tsukasa.
. . .
or: rui and tsukasa break up gone HORRIBLY wrong
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you won't understand what i am to you (you see the flower is blooming but it's breaking us two) by burning_trash_pile
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
28 Oct 2025
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With that, Tsukasa chucked his phone onto his bed and fell onto it, letting out a sigh of relief.
Alright, there’s no turning back now.
Tsukasa continued to stare at the ceiling for a bit before finally deciding that he should start preparing for bed, grabbing his pajamas and rushing to brush his teeth, anxiously shifting from foot to foot as he stared at the bathroom mirror, not able to escape his thoughts of the coming day.
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Tsukasa is finally ready to tell Rui his secret.
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intoxicated by austhheart
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 Oct 2025
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he set him on the couch, fetching him a glass of water and making an attempt to make him drink it. the other only complained and said he wanted to drink more alcohol to "numb away his feelings". which wasn't the best response to give to the now overstimulated Shirafuji.
"Nakayama-kun, if you don't drink this glass of water, I swear—" he got cut off by the male's finger on his lip, the other flicking away the finger off his mouth. the crazy man sure isn't going to give up that easily, huh?
"mm.. Shira', am I ugly?" the blonde asks, pouting innocently as he hopefully looked up at the librarian, wishing to get an answer he has in mind.
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Guiding Your and Their Futures by V0iD_ViC3
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 Oct 2025
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Rui receives an offer from his teacher to do volunteer work as entertainment at a field trip for multiple local elementary schools, an offer that he ultimately accepts in hopes of furthering his goals. On the day of the trip, Rui ends up noticing that many of the attendees in a certain group seem to be having troubles with each-other, so he decides to try to help them with that, and...
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Wdym it’s fall? I think you spelled summer wrong. by Anonymous
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
28 Sep 2025
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Rui’s brain gets turned into liquid because of Tsukasa’s legs.
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Sunshine held in (slipping from) my fingertips. by becoming_potatoes11720
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
12 Aug 2025
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Rui was doing just fine, trying to journal his life like Mizuki told him to. It doesn't take much for everything to feel like it's collapsing around him...
Series
- Part 1 of kuro's future ruikasa shenanigans
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Shopping for your Roommate/Colleague: A How Not To by soupcar
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 Jul 2025
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Of course Nenerobo needed to be repaired again. Of course Nene was asking for some sort of weapons to be installed. Of course Nene also wanted some AI made the Ootori family which wasn't public knowledge to be added into it as well.
Hang on, what?
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Rui gets side tracked while trying to go shopping and ends up involved in something he really shouldn't be because of some blond thing.
!recent chapter is not a new a chapter!