Midsummer brother's wife: Sweaty swapping

His eldest son, Taro, and his second son, Kazuya, have returned to their parents' home. Taro's wife, Yoshie, and Kazuya's wife, Shizuka, also gathered, and it was a long time ago that her parents' house became lively. Shizuka, who had been consulting with Taro about Kazuya, who was not getting a regular job, was attracted to him. Meanwhile, Kazuya has a crush on Yoshie, who is kind to watch over him. There was no way these brothers could get along well, and even more, they had desires for each other's wife. Kazuya hides and devours Yoshie, while Taro secretly secretly calls Shizuka... However, the secrets under one roof were quickly discovered by both of them...