Uppermoons x Reader
Good Uppermoons

615
As a Demon Slayer you have been tasked with hunting demons. Recently promoted to Hashira you've made it your life mission to find and kill Muzan the Demon King.
However, your plans change when after an encounter with an illusion demon you wake up in a new world. One where your old enemies are now your allies and your allies are your enemies. With the UpperMoons as Hashira and the Hashira as Uppermoons your sanity is tested as you try and find a way home. Will you be able to trust these demons turned humans or will your hatred be your downfall?
(Your appearence, name, and Breathing Style are youe choice)