Kujakuou

A boy with no memory and immense supernatural abilities is raised by priests who teach him to wield his powers for good. Unknown to him, a malevolent figure named Siegfried von Mittgard desires to claim his legacy and dominate the world as the Regent of Darkness. Siegfried sends violent followers to eliminate the boy before he discovers his true purpose. The boy must now uncover the mystery of his origins before the power inside him becomes uncontrollable.