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1. Build An Ass and Tear Him Down by Sleep_King for Tetrimidion

   Fandoms: おそ松さん | Osomatsu-san (Anime)  

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

   02 Feb 2026

   Tags

   • No Archive Warnings Apply
   • Matsuno Ichimatsu/Matsuno Karamatsu
   • Matsuno Ichimatsu
   • Matsuno Karamatsu
   • Sex Toys
   • Dubious Consent
   • Degradation
   • Dirty Talk
   • Non-Consensual Drug Use
   • Fleshlights
   • Incest
   • Sibling Incest
   • Brother/Brother Incest

   Summary

   After Ichimatsu's little stunt, Karamatsu seeks revenge by returning the favor.
   This fanfic is a fan-sequel to Tetrimidion's "Build A Dick and Tear Him Down"! Please read the original first otherwise this would make no sense

   Language:

   English

   Words:

   1,558

   Chapters:

   1/1

   Comments:

   2

   Kudos:

   4

   Hits:

   129