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1. It's Not the First Time that Matters by Osomatsu_Trash (orphan_account)

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

   • Mature
   • Creator Chose Not To Use Archive Warnings
   • M/M
   • Work in Progress

   01 Oct 2016

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Matsuno Karamatsu/Matsuno Osomatsu
   • Matsuno Karamatsu & Matsuno Osomatsu
   • Atsushi/Matsuno Karamatsu
   • Matsuno Karamatsu
   • Matsuno Osomatsu
   • The other bros show up occassionally
   • Atsushi (Osomatsu)
   • He only shows up for a bit
   • Sibling Incest
   • First Time
   • Fluff and Angst
   • Dubious Consent
   • but only mentioned
   • Eventual Smut

   Summary

   Karamatsu has a one night stand he can't remember and internally despairs over his horrible first time. Osomatsu finds out and things get super complicated super fast and Karamatsu has no idea what to do.

   Where's the guidebook to gay relationships when you need it?

   Language:

   English

   Words:

   37,032

   Chapters:

   9/?

   Comments:

   131

   Kudos:

   912

   Bookmarks:

   78

   Hits:

   13,667