Genya is basically Nezuko in this AU basically meaning he can change sizes and uses his blood as a BDA to harm other demons instead of humans this means Nezuko is a human slayer, Sanemi is basically Tanjiro in this AU wanting to turn Genya back human and still uses wind breathing but not a Hashira... the normal slayers are the Hashira while normal demons uppermoons, so pick who you want to be then we may begin!

1: Genya 2: Sanemi 3: (Someone else's swap au)