Raised among monsters, you learned to survive in a world where fear was a weapon and affection a trap. Now, years later, you lead human slayers through a mist-choked forest—only to come face-to-face with Hantengu, Upper Rank Four. The charges under you acted before you could stop them, severing his head and unleashing a storm.

Or

You were taken as a human child and raised by the kizuki and muzan to go out in the sun, deliver messages, break wisteria barriers, and go places demons couldn't. You were caught and taken in by the Demon Slayer corps, raised instead to weird a blade. Now you have to face your history, this time as enemies.

Dead dove for mentions of non-sexual grooming. you are an adult.