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1. first time regressing part 2 by SIverfanweedo

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

   • Not Rated
   • No Archive Warnings Apply
   • Gen
   • Complete Work

   21 Feb 2026

   Tags

   • No Archive Warnings Apply
   • Shinazugawa Genya & Shinazugawa Sanemi
   • Shinazugawa Genya
   • Shinazugawa Sanemi
   • Age Regression/De-Aging
   • Wetting
   • Age Regression Little Shinazugawa Genya
   • Age Regression Caregiver Shinazugawa Sanemi
   • Soft Shinazugawa Sanemi
   • Soft Shinazugawa Genya
   • Not Beta Read

   Summary

   Sanemi learns about his brothers age regression

   Series

   • Part 12 of Baby Brother (Genya age regression one shots)

   Language:

   English

   Words:

   1,990

   Chapters:

   1/1

   Comments:

   7

   Kudos:

   39

   Bookmarks:

   3

   Hits:

   550