Based on

Movies like 振袖釼法 (1955)

In Marugame Domain of Shikoku, a low-ranking foot soldier named Tagami Genbachi was envied for marrying Tsuji, the most beautiful woman in the domain. However, due to a personal grudge held by Horikawa Gentazaemon, the swordsmanship instructor, Genbachi met an untimely and bitter death through foul means within the precincts of the Hachiman Shrine. Due to the domain's oppressive treatment of those of low status, Tsuji, now with her infant son Botaro, was dispossessed of her home and exiled.