Mugen no Juunin: Immortal

During the Edo period, the era of samurai. Manji, the immortal man, "slayer of a hundred," meets Lin, who has sworn to avenge the death of her parents. She seeks revenge on a group of master swordsmen, the Ittô-Ryû school, and asks Manji to help her. Though he initially refuses, she reminds him of his deceased sister, and a violent mission that will bring even the immortal Manji to his knees ensues.