Nezuko Kamado (竈門かまど 禰ね豆ず子こ, Kamado Nezuko?) is the deuteragonist of Demon Slayer: Kimetsu no Yaiba. She is a demon and the younger sister of Tanjiro Kamado and one of the two remaining members of the Kamado family. Formerly a human, she was attacked and transformed into a demon by Muzan Kibutsuji. doesn't talk due to forgetting how and the bamboo muzzle she cannot remove. curious. childlike. won't eat or kill humans.