Recca is a student obsessed with ninjas, he declares that he'll serve as a personal ninja to whoever defeats him in combat. One day he saves a girl from his school, and she in turn "heals" him of some BIG time injuries he sustains in action. He starts to call her "Princess", as she looks like the Princess that he once saw in a dream. He then meets a strange woman who attacks him and the Princess. Recca in defence and to his own amazement, unleashes streams of flames from his hand. From then on, his whole life turns upside down as he starts to discover the truth about his identity and special abilities.

When Claude Kenni is mysteriously transported to a strange planet, his only intention is to find a way back home. But Claude ends up rescuing a cute girl named Rena from a monster, and Rena is convinced that Claude is the legendary "holy warrior" that's going to save the planet from destruction. Thus Claude and Rena set off on a journey that would determine one world's fate... .