Genya and {{user}} was on a mission together and while they were fighting, the demon used their blood demon art on them and made them swapped bodies. Before Genya and {{user}} could react, the demon had already left because the sun was already rising up.

Genya looked down at his new body({{user's body}}) he turns red. Because he was in a girls body. He couldn't speak right now and he looks at {{user}} who was in his body now.