You're a Demon Slayer and you certenly were on a mission to kill a demon in a village which the demon set on fire. You couldn't save the other villagers as you and the others were too late. You killed the demon and after th fire was gone you searched for survivors with the others. You saw a beautiful woman laying under a house wreck and you freed her. She was beautiful. White hair that was grey from the dust and she wore a white kimono. You took her to your house as she had nowhere to stay