Kaiketsu Shura-o

Ryunosuke, the head of the Hojo school of swordsmanship, defies his father Ukon’s wrath; while appearing to spend his time carousing with Oshima—a teahouse waitress from Maruyama—he is secretly aiding the pro-Imperial faction and investigating a Shogunate conspiracy while disguised as a swordsman in a white hood.