Kimetsu no Yaiba - Somosan, Seppa!
64Description
From [Rotti Totti](https://www.mangaupdates.com/groups.html?id=9047): Short stories taking place between scenes up until the Pillar Training Arc NOTE: As of 6/1/19 this doujin contains some spoilers for the manga. If you are an anime-only fan/have not caught up with the manga then please be aware of the spoilers!!