Kujaku is a young mystic with no known past, born under a dark omen and gifted with immense supernatural power. Priests raised him, and he has learned to turn that power toward good. The villainous Siegfried von Mittgard wants to seize Kujaku's birthright and rule the world as the Regent of Darkness, so he sends murderous servants to kill Kujaku before he awakens to his destiny. To survive, Kujaku must solve the mystery of where he came from before the force inside him devours him. The two-episode OVA blends action with horror and the supernatural.