The Upper Rank Demons are the most powerful demons to exist in the Demon Slayer series and are the most evil under Muzan.

Every demon in Demon Slayer has a unique ability known as a Blood Demon Art. So, how does Muzan Kibutsuji's Blood Demon Art work?

A breathing style created after the sun breathing, learn how this was created in the world of Demon Slayer and its relation ...