Sword Gai The Animation

Sword Gai The Animation revolves around two powerful demonic swords, Zsoltgewinn and Shiryu, which are capable of manipulating their wielders. Zsoltgewinn, sealed away for its uncontrollable bloodlust, is unleashed by the Shoshidai organization, which collects cursed artifacts. Meanwhile, Gai Ogata is born with Shiryu, another demonic sword, after his father's murder and mother's death, and is found by the blacksmith Amon. Gai eventually gains a new arm, reforged from Shiryu, allowing him to wield the sword and struggle to control its violent urges.