Manji is an immortal swordsman who was cursed with eternal life. He got tired of living with all the deaths he created. He has no skills other than killing, so he creates a plan to regain mortality: he will kill one hundred bad people for every good he has killed. The old witch who touched Manji with immortality, agrees with Manja and Manji’s offer on her way to kill a thousand bad people. In his journey, he meets a young girl Rin who will take revenge on the fight against the sword school, whose members murdered the Rin family. Rin and Manji travel together hoping for peace. There are many different enemies on their way. Rin and Manji are almost constantly attacked and must learn to live, avoiding revenge.