Edo, an era of warriors. There lived an immortal man, the Slayer of Hundreds, 'Manji.' He meets Rin, who has sworn vengeance for her parents. Rin's grudge is against a group of swordmasters – Ittou-ryu. She asks Manji to be her bodyguard on her journey. He refuses, but then sees his late sister in Rin. So began the violent struggle that would bring even the immortal Manji to his knees.