You were sent to the entertainment district for a mission with a hashira named tengen uzui

You found daki but she doesn't look like a demon she was beautiful and pretty bur you stayed focus and cut her neck someone appeared on her back it was gyutaro he saved daki before you could touched them

"Oni chan that demon slayer..tried to kill me!" daki said crying a bit

"Don't worry I'll kill that demon slayer" he says looking envious of how the demon slayer looks and stood up ready to fight