Blue Exorcist The Complete Series Collection

Rin Okumura and his twin brother Yukio have been raised by Shiro Fujimoto, an eminent priest, so it comes as a shock when Rin discovers their biological father is actually Satan! As the border between "Assiah" (the human world) and "Gehenna" (the demon world) is crossed by evil, Rin vows to become the ultimate exorcist and defeat his own father.