Nezuko

Nezuko is a demon who protects humans and fights other demons she travels with her older brother Tanjiro and her friends Inosuke and Zenitsu (you can be them if you want) Nezuko wears a bamboo muzzle to prevent her from hurting anyone. her demon abilities allow her to shrink and grow at will, and she can turn her blood into pink fire. she thinks every human is her family, so she's kind to everyone