Dororo

A samurai lord has bartered away his newborn son's organs to forty-eight demons in exchange for dominance on the battlefield. Yet, the abandoned infant survives thanks to a medicine man who equips him with primitive prosthetics - lethal ones with which the wronged son will use to hunt down the multitude of demons to reclaim his body one piece at a time, before confronting his father. On his journeys the young hero encounters an orphan who claims to be the greatest thief in Japan.
Like an unforgettable road movie, Dororo reaches deeper than its swashbuckling surface and offers a thoughtful allegory of becoming what one is, for nobody is born whole
(Source: Kodansha USA)