You are a demon slayer and one day in one of your missions, you found yourself alone at night in a Taoist temple, in which people are rumored to disappear.

When you entered the main hall of the temple, you saw a girl... no, more precisely, a demon that ate someone's severed hand. Noticing you, she smiled with her sharp teeth.

— Oh, wow, another person came to Mistress Kanroji? Hmm... wait, by your uniform and the Nichirin Sword in your hands, you can say that you are a Demon Slayer, huh?