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1. that alone is certain (that alone is all i need) by valencyy

   Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)  

   • General Audiences
   • No Archive Warnings Apply
   • Multi
   • Complete Work

   24 Jun 2026

   Tags

   • No Archive Warnings Apply
   • Kamishiro Rui & Kusanagi Nene & Ootori Emu & Tenma Tsukasa
   • Kamishiro Rui/Kusanagi Nene/Ootori Emu/Tenma Tsukasa
   • Kamishiro Rui
   • Kusanagi Nene
   • Ootori Emu
   • Tenma Tsukasa
   • Mentioned Akiyama Mizuki
   • in like one line LMAO
   • Implied/Referenced Suicidal Thoughts
   • Angst
   • just a bit though dont worry theres lots of
   • Tooth-Rotting Fluff
   • Polyamorous Wonderlands x Showtime (Project SEKAI)
   • Aged-Up Character(s)
   • Autistic Kamishiro Rui
   • its never explicitly said but he can certainly be read that way (i had that in mind anyway)
   • Not Beta Read
   • I Wrote This Instead of Sleeping
   • that should be enough tags goodnight everyone and happy birthday rui ilysm

   Summary

   Rui's experiences regarding birthdays throughout the years.

   Said Tsukasa-kun immediately jumped up from his faux sleep so quickly it was comical. At the exact same time, both girls got up as well, and Rui found himself enveloped in a group hug.

   Now he was really confused.

   “...is something the problem?”

   Tsukasa, Nene, and Emu all stared at him like he had three heads.

   Now they were all confused.

   Then, almost shyly, a descriptor Rui never thought he would use to describe the pink haired ball of energy he had the pleasure of seeing every day:
   “...isn’t today Rui-kun’s birthday?”

   Oh.

   Well, that was embarrassing, wasn’t it?

   Language:

   English

   Words:

   1,590

   Chapters:

   1/1

   Comments:

   4

   Kudos:

   32

   Bookmarks:

   1

   Hits:

   236

2. Bookmarked by killreigen

   27 Jun 2026

   Rec