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1. Get Happy by froggercarl

   Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime & Manga)  

   • Explicit
   • No Archive Warnings Apply
   • M/M
   • Complete Work

   14 Feb 2026

   Tags

   • No Archive Warnings Apply
   • Shinazugawa Sanemi/Tomioka Giyuu
   • Shinazugawa Sanemi
   • Shinazugawa Genya
   • Tomioka Giyuu
   • Sabito (Kimetsu no Yaiba)
   • Kamado Tanjirou
   • Alternate Universe - High School
   • Alternate Universe - Modern Setting
   • Genya is a good brother
   • Shinazugawa Sanemi is Bad at Feelings
   • Mathematics Teacher Shinazugawa Sanemi
   • Gym Teacher Tomioka Giyuu
   • Teacher Shinazugawa Sanemi
   • Teacher Tomioka Giyuu
   • they fuck on the first date
   • Getting Together
   • Valentine's Day
   • Anal Sex
   • Oral Sex
   • Porn with Plot
   • Shinazugawa Sanemi-centric

   Summary

   High School Math Teacher Sanemi Shinazugawa is confused. Why does his colleague want to have dinner with him randomly?

   -

   I wanted to do a quick Valentine's Day fic and it turned into this

   Language:

   English

   Words:

   4,402

   Chapters:

   1/1

   Comments:

   2

   Kudos:

   144

   Bookmarks:

   17

   Hits:

   1,793