Watanabe Kazuma and Kawai Matagorō from the Bizen Okayama Ikeda clan were close friends, but they inevitably became enemies after Matagorō killed Kazuma's younger brother, Gentayū, and fled. Seeking assistance, Kazuma asked his brother-in-law, Araki Mataemon, for help, but Mataemon refused, saying that it was against the code for a brother to avenge another brother's death. On the other hand, the lord of the clan, Ikeda Tadao, ordered a search for Matagorō, who was found to be sheltered by the H...