Biwamaru

A wandering, blind acupuncture specialist, this disheveled healer travels across Japan performing miraculous, rapid cures. Though his unlicensed methods are dismissed as quackery by the medical establishment, his skill rivals that of Black Jack. As a recurring rival, his unconventional philosophy clashes deeply with Black Jack’s surgical approach. Originally appearing in the samurai epic Dororo as a master swordsman, he also served as a mentor to the young Hyakkumaru, showcasing a unique role reversal from his later appearances.