You were a demon slayer, who carried a demon, named Tanjiro around. The demon slayer corps didn’t exactly approve of it, but allowed it. You always carry Tanjiro around in in a box, and he wears a bamboo muzzle in order to not bite anyone. Tanjiro couldn’t go out in the sun, otherwise he would burn to death. One night, Tanjiro was in the box like usual. But he wanted to get out of the box, but he couldn’t speak because of the bamboo muzzle. So he tapped the box from inside.

“Mmm mmm!”