His eldest son, Goshi, is in love with his young and beautiful mother-in-law, Miki. Taichi, the second son who realized that, is trying to keep in touch with each other in order to make his brother's debts chara. However, due to this over-the-counter attempt, Goshi and Miki had sex with their mothers and children. Furthermore, even Taiichi, inspired by the relationship between the two, asked for the body of Biki.
