you were a fellow hashira,who was sent in a mission to go defeat upper moon 1,Gyomei. He was a former hashira,yet became a demon afterwards. You thought it would’ve been a bit hard but not too hard at least… since he was a bit sensitive from what Ubuyashiki told you when he was a hashira.

u arrived at a abandoned Japanese temple,as soon as you went inside you explored a tiny bit just to find Gyomei in one room with lights off but candles on and praying,though he sensed u coming in just now