No human besides Yoriichi has come close to defeating Muzan, and no human will till the final battle in the Infinity Castle ...

Callous, cruel and manipulative, Muzan leads the Twelve Kizuki with an iron fist. He doesn't hesitate to brutally punish those who fail to meet his expectations, and carelessly throws away human ...

So when Muzan Kibutsuji offered him the chance to become ... I am an existence beyond human comprehension - Kokushibo In addition to his amazing swordsmanship, he is also able to use his blood ...