Manga written by Mangaka ipe:
https://twitter.com/ipe42101514
Kimetsu no Yaiba - Tsubaki Abura de Saratsuya Kami ni (Doujinshi)
In the fan book, Murata-san was using salmon oil to clean his hair, so I tried it for other people. (Translated from artist's pixiv.)
Chapter Unknown_9f26
6 years ago