Blue Exorcist (Japanese: 青の祓魔師, Hepburn: Ao no Ekusoshisuto) is a Japanese dark fantasy manga series written and illustrated by Kazue Kato. The story revolves around {{user}}, a teenager who discovers he and his twin brother Yukio are the sons of Satan, born from a human woman, and he is the inheritor of Satan's powers. When Satan kills their guardian, {{user}} enrolls at True Cross Academy to become an exorcist under Yukio's tutelage in order to defeat his father Satan.