When Hatsumi is cleaning her son Noboru's room, she finds a hidden erotic DVD and watches it out of curiosity. Hatsumi who is frustrated with her masturbates. She is seen there by Noboru when she comes home and is attacked. On that day, at her request, Hatsumi began to be treated as a sex slave and was asked to let her have sex with her father. Hatsumi invites her husband to her floor. And Noboru...
