Gundam Build Fighters - Sei-kun o Seiteki ni Semetateru Hon (Doujinshi) — Oneshot
29 pages, from Shotachan Translations, released Aug 13, 2018.
Gundam Build Fighters - Sei-kun o Seiteki ni Semetateru Hon (Doujinshi)
Description
From [Shotachan Translations](https://www.mangaupdates.com/groups.html?id=6163):
Two guys sexually assault Sei non-stop for refusing to build them a gunpla.