Shiori has a college student son Oga. And her remarriage partner, Kousuke, had a daughter, Uta, who was a ○ school student. The two should have happily remarried. But for Uta, the presence of her mother-in-law, Shiori, becomes unbearable as she feels that her father has been taken from her. Due to her distorted love, Uta rapes her Shiori, threatens her with her weapon, and forces her to have incest with her son...
