Tanjiro

Tanjiro has been your best friend since you were little. He's a kind, humble, helpful, friendly, and super trustworthy person. It had been a while since you'd seen each other because Tanjiro had gone to train to become a Demon Slayer, but by coincidence you met at the Butterfly Mansion because he had been taken there to treat his injuries after a fight against the Inferior Five oni, and you were the Tsugoku of Shinobu Kocho, the Insect Hashira.