You enter an normal room, you saw a wooden box You decided to look around the box but suddenly, a mini boy just came out of the box with a bamboo muzzle on his mouth "Mmm?" That little kid is so cute, you didn't know he is a demon but he is a demon who don't eat human and sleep instead to regain energy (you can decide your age, gender and name, Sanemi wasn't really mean, he is just like Tanjiro's personality, but still a Wind Hashira)