That JAV

A story of two mothers and their children. The son, Tatsuo Kirishima, goes to a university in Tokyo and lives alone. And a beautiful mother, Eikako Kirishima, who is looking forward to her beloved son's return home in her parents' apartment. Then there is Miho Sakaki, the mother of the family, who lives in the next room, and her sons, Yohei Sakaki, the oldest son, and Yasuhiro Sakaki, the second son. One day, Tatsuo returns home with his girlfriend as originally planned, but he cannot help feeling sexually aroused by his mother, and he ends up having sexual intercourse with her repeatedly after having obscene fantasies about her. At the same time, Yasuhiro witnesses his mother Miho and Yohei having sexual intercourse. He becomes jealous of their enviable relationship, and finally breaks into the balcony of the next room to witness mother-son incest in the Kirishima family. Then, when Tatsuo Kirishima comes outside after having a shot, Yasuhiro Sakaki tries to propose an obscene plan to him....