1 - 20 of 21 Works in Age Regression Little Tenma Tsukasa
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Plans Cancelled by M1kuD4y0
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 Sep 2025
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Summary
Rui was supposed to take Tsukasa out on a date, but someone feels a bit fuzzy..
Series
- Part 17 of ♪♡ Kaykay's Age Regression Ruikasa Fics ♡♪
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The ocean is scary… but if you’re there… 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)
06 Jul 2025
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Summary
Classic caregiver finds a little in need of help. Nothing much to it. Read the tags and notes.
Series
- Part 8 of A rotten boys ritk collection
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Time to wind down by M1kuD4y0
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
09 Jun 2025
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Summary
After a long day of playing, it’s naptime.
Series
- Part 16 of ♪♡ Kaykay's Age Regression Ruikasa Fics ♡♪
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Operation: Star Baking! by M1kuD4y0
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 Jun 2025
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Summary
The sudden urge to bake overtakes a tiny Kasa, who can say no to his adorable face? Rui certainly can't!
Series
- Part 15 of ♪♡ Kaykay's Age Regression Ruikasa Fics ♡♪
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Maybe another helping hand isn't too bad by M1kuD4y0
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 May 2025
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Summary
Tsukasa has had an awful day, and he just wants to go home.
Series
- Part 14 of ♪♡ Kaykay's Age Regression Ruikasa Fics ♡♪
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Our little star by Mizuisgoinginsanehelp
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
21 Apr 2025
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Summary
Tsukasa accidentally regresses in front of his troupe members, who adore him dearly.
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I Want You To Depend on Me (the Sympathy of Love) by Mayayu
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
24 Mar 2025
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Summary
He hums in thought. “This is quite the stretch on my part, and it probably isn’t feasible, but it has to be something along these lines.” Rui pauses for a moment in hesitation, before continuing. “I believe that Emu and Tsukasa may be raising a child together.”
Nene spits her juice out, beginning to choke on it. Rui taps her back so that she can clear her throat. “Rui, what the fuck?!”
Series
- Part 14 of One-Shots by Maya
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for you, anything by Faayuan
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game), 천재배우의 아우라Aura | Aura of a Genius Actor (Webcomic)
21 Mar 2025
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Summary
Tsukasa is an actor. Was. He was an actor.
Well, that was in the past. Past life, that is. In this second life, he decides to abandon all hopes of being an actor. Life doesn’t want him to be one, so he lets it lead him, even if it hurts. He promised to never join the entertainment industry again.
But, really. Is he expected to look the other way when Akito is performing?
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Tsukasa, an actor who vows to not become one (again), have his talents not get unnoticed by Akito. Thus the confusing story of an actor trying to get acting advice from a business major senior who's as baffled as everyone is.
Series
- Part 8 of oh no anything but the unpopular fandoms
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You were never really alone(because We’ll come find you) by Autumn_isbored
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 Feb 2025
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!!!AGE REGRESSION IS NOT IN ANY WAY SEXUAL, DNI IF YOU SUPPORT AGE PLAY OR STUFF LIKE THAT!!!
*****
Nene feels like she doesn’t belong here, after overhearing them talk. And suddenly, she feels so small and foggy.Or
Nene misunderstood something and regressed for the first time, her friends noticed and help her
Series
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Big Sis Care & Playtime by PJSK_PlayCorner for doctorfunkbeat
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 Dec 2024
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Summary
While it does take a while; Rui was able to find the medkit stored around in his room, handing it to Mizuki with worried eyes. Quietly speaking, "Kasa, will be okay..?" Mizuki smile as she reassures Rui as she opens the medkit to help Tsukasa. "Of course he will be! You can count on me okay?" Mizuki says —
( - in which Mizuki gets a message from Rui and goes over to help him and Tsukasa from a small accident - )
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B-but Santa’s Coming!! by M1kuD4y0
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
24 Dec 2024
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Summary
Getting Tsukasa to sleep is usually such an easy task! He’s very good at making sure he goes to bed at a decent hour.. but… tonight’s Christmas Eve…
Series
- Part 12 of ♪♡ Kaykay's Age Regression Ruikasa Fics ♡♪
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Clamor, clamor, it’s okay for you to just enjoy it! by PretentiousPeanut
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 Dec 2024
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Summary
What do you do when you're beyond stressed, emotionally repressed, and very regressed? Whatever you do, don't do what Tsukasa does!
Aka Tsukasa pushes down his need to regress in order to focus on other bigger issues. It's much harder than expected.
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Insecurities by M1kuD4y0
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
21 Oct 2024
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Summary
For a brand new role Tsukasa is auditioning for, one of the requirements is to be thin. Unfortunately, Tsukasa doesn’t think he’s ‘thin’ enough.
Series
- Part 11 of ♪♡ Kaykay's Age Regression Ruikasa Fics ♡♪
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Candies and carrots!! by M1kuD4y0
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 Sep 2024
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Summary
Tsukasa promised his troupe he wouldn't regress, he could be a big boy for the show!! (He was wrong.)
Series
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Ruikasa Agere hcs!! (But I project way too much) by M1kuD4y0
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 Jul 2024
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When you need a little reassurance, I'll be there by M1kuD4y0
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
22 May 2024
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Summary
Tsukasa looked at the razor. And then himself in the mirror. What is there to live for? Why would anyone want him on the planet? He’s a waste of space. Those are the thoughts circulating in his head. With the new found motivation to hurt himself, he picks up the razor and cuts.
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Secrets Well(?) Kept! by M1kuD4y0
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
06 Mar 2024
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Summary
Tsukasa is so excited about a new show!!! However, this overwhelming feeling is a little too much... He slips into little headspace during practice. Watch as Rui *attempts* to keep this secret from Emu and Nene(with much struggle) and get his little future star home!
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Tsukasa regressing at practice and Rui tries to get this little dude home but he's a lil too silly!!
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Weird feelings by M1kuD4y0
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
24 Feb 2024
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Summary
Tsukasa is invited to Rui’s house. Normally he’d be bouncing off-the-walls-excited. Today was… different. He couldn’t place his finger on what he was feeling. It’s familiar, but also not?
To put it short,
Watch tsukasa tenma neglect his needs to regress and break suddenly while he's sleeeeppppyyyy🔥🔥🔥
Series
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I'm Here For You by M1kuD4y0
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 2024
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Summary
When Tsukasa accidentally regresses at school, he takes the risk of someone seeing the future star in such a state! Luckily, the first person to come to the rooftop is Rui. He’s not sure what is happening to Tsukasa, but he wants to help. This, however, leads to a conversation between the two.
Series
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Too Busy To Be Okay by M1kuD4y0
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 Feb 2024
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Summary
Tsukasa has been extremely busy! With that comes stress. Too much stress. He’s been pushing aside the fact he needs to regress, but he can’t take it anymore. With that being said, a small incident pushes him over the edge. Rui is here to help~!
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