The demon king of the Demon Slayer universe, Muzan Kibutsuji was a force of evil and the first demon to walk the earth. From birth, Muzan suffered a rare and fatal disease. In search for a cure ...

Muzan's Blood Demon Art, biokinesis, allows him to control his body and shape it as needed. Other demons also have limited biokinesis capabilities, but none can match Muzan's. Muzan's limits ...

These three are responsible for some of the biggest tragedies in the Demon Slayer universe, but even with how malevolent they are, they have nothing on the original calamity— Muzan. Muzan's very ...