Rin Asano is the only member of the Mutenichi dojo left alive after the lethal attack of Anotsu Kagehisa, a genius swordsman and leader of Ittou-Ryuu clan. He and his comrades kill Rin's parents and disgrace her dojo. After two years, she seeks for revenge hiring Manji, a cursed Samurai that cannot die due to the 'kessen-chu' bloodworms living in his body and can heal all wounds. Manji can die only by a rare poison. When his sister is being killed, he gets mad and swears to kill one thousand samurais. He feels sad about her loss and sometimes frustrated about his situation. Maybe tired that continues to live. So Rin gives him some more motivation with her intentions about her revenge. This is a great anime based on the legendary manga and gives us a first taste of blood and philosophical issues about vengeance, life and death. The actions scenes are good, there is drama and suspense around and the project is working well.