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1. Nothin' but a Nasty Dog by virusb4s3 (Datab4s3)

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

   • Explicit
   • Underage Sex
   • Multi
   • Complete Work

   02 Jan 2026

   Tags

   • Underage Sex
   • Hinomori Shiho/Hoshino Ichika/Mochizuki Honami/Tenma Saki
   • Hinomori Shiho & Hinomori Shizuku
   • Ootori Emu & Tenma Tsukasa
   • Kusanagi Nene & Ootori Emu
   • Kusanagi Nene/Tenma Tsukasa
   • Hoshino Ichika (Project SEKAI)
   • Tenma Saki
   • Mochizuki Honami
   • Hinomori Shiho
   • Hinomori Shizuku
   • Tenma Tsukasa
   • MEIKO (Vocaloid) is there for a second
   • Ootori Emu
   • Kusanagi Nene
   • Nene-Robo (Project SEKAI)
   • (those last 3 only in the side fic)
   • Surprise Sex
   • Sex Toys
   • Puppy Play
   • Bottom Hinomori Shiho
   • Top Tenma Saki
   • Vaginal Fingering
   • Cunnilingus
   • Vaginal Sex
   • Squirting and Vaginal Ejaculation
   • Choking
   • Fluff
   • He/Him and They/Them Pronouns for Hinomori Shiho
   • They/Them Pronouns for Hoshino Ichika (Project SEKAI)
   • Trans Tenma Saki
   • its not like a key plot point but like
   • she has a dick so
   • Anal Beads
   • Aftercare
   • We wrote this instead of sleeping
   • Author was watching Breaking Bad while writing
   • okay thats for the MAIN FIC
   • side story tags starting now
   • Midsummer Night's Dream References
   • They/Them Pronouns for Kusanagi Nene
   • Genderqueer Kusanagi Nene
   • Metal Gear References
   • Tenma Tsukasa is So Done
   • Chapter 2 Title is a parody of Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb
   • Title From a Sir Mix-a-Lot Song

   Summary

   "Shiho's stressed," She says, rocking on her heels.

   "Yeah, they couldn't be less obvious about it this time." Ichika says, glancing at their hands.

   "So, why don't we fix that?!"

   "They don't usually let us help when he's stressed, Saki-chan, but…"

   "Ah, you're right, Hona, but! Fear not, because schemer Saki is here to explain!" She picks up a stray piece of chalk and writes in big letters on the board;

   'The Leo/Need Night Of Debauchery'

   Language:

   English

   Words:

   8,082

   Chapters:

   2/2

   Comments:

   27

   Kudos:

   38

   Bookmarks:

   7

   Hits:

   1,344