Manji, the immortal samurai, is condemned to a life of combat until he slays a thousand evil men. He works as bodyguard for Rin, a young woman who seeks to avenge her father's murder at the hands of the deadly Kagehisa Anotsu. But even with Manji's instruction, will Rin ever be able to stand against such a powerful and ruthless adversary? And in her consuming quest for vengeance, does she risk becoming like him?
