Radia Senki

The hero wakes up in the middle of a forest. His head hurts. He doesn't remember anything: he doesn't know who he is, and can only vaguely recall his own name. A man named Darus approaches the hero, takes him to a nearby village and introduces himself as a sorcerer on a quest for revenge. The two join forces, and soon become involved in a complex mystery concerning a kidnapped princess, the destruction of the world, and the search for the hero's own identity.