In Demon Slayer, Muzan Kibutsuji's terrifying power is rivaled only by Yoriichi Tsugikuni, the legendary Demon Slayer. Yoriichi, creator of Breathing Styles, nearly defeated Muzan, leaving him ...

However, beneath these borrowed faces, hid the same sinister entity: Muzan Kibutsuji, the origin of ... In his human past, before he became the demon feared by all, he murdered the very doctor ...