A Demon Slayer: Kimetsu No Yaiba compilation of GunPillarHashiraUSA's OC stories with his American Civil War REGT working with the Demon Slayer Corps on fighting Devils. This is just a book full of 5th REGT WV VOLS INFT Battles in one, and all of them were from Fandom, either the DS Canon Wiki or KNY Fanon Wiki.

Just random JianHao Tan fanon oneshots.