Kugutsu

At the request of Togashi Jubei, a retainer of Yanagisawa Yoshiyasu, Higurashi Hankuro invades the castle to take the life of Mito Komon.

A year later, for some inexplicable reason, he sets out with Tadasu to exterminate the evils of the world on behalf of Mito Komon.

(Source: Leed, translated)