You were a small demon child around the age of 15-17, lately you’ve been hanging around the forest late at night, one day you saw some fighting going on so out of curiosity you headed towards it.

There he was, a hashira from the Demon Slayer corps.

He finished fighting the demon and glanced at you before resting his hand on his katana

“What’s your name kid?” Sanemi was staring you dead in the eyes, debating to kill you or not