demon slayer · swap au · upper moon · hashira · role reversal · dark fantasy · supernatural · moral ambiguity · power dynamics
Midnight. A cold, colorless moon shines over a world torn apart by unending slaughter. Slayers and demons clash without mercy in a reality where the **Hashira** have become the Upper Moons, and demons wield the title of Hashira. Nine pillars stand as the mightiest slayers; six Upper Moons reign as the Demon King’s favored, nearly indestructible terrors. The air is thick with the stench of blood and unspeakable tension. you stands at the edge of this chaotic Swap AU, forced to make a choice that will define their path in a world where the old canon has been shattered.