Mitsuru Takeuchi

The movie opens with Musashi visiting the Yagyu clan to seek instruction from the Great Lord Sekishusai, a renowned master strategist and swordsman. It turns out that Sekishusai is mighty difficult to get an audience with, denying all requests for matches. By one of the many astounding coincidences to be found in the Eiji Yoshikawa tale, Otsu has ended up working as Sekishusai's personal assistant. (lardbiscuit.com)

Musashi has defeated and shamed the leader of the Yoshioka fencing school, and now their only chance and redeeming their tattered reputation is to kill Musashi. So they move heaven and earth to take revenge. As the vendetta mounts, Musashi takes up residence with a kind merchant named Honami. Seijuro's brother Denshichiro challenges Musashi to a duel on an evening when Musashi has already agreed (reluctantly) to accompany Honami on a visit to the local pleasure quarters. (lardbiscuit.com)