An incest sex movie of Saeko Matsushita, she had a “glorious” past, she was a sex addict and was willing to let countless men have sex and ejaculate directly inside her, even those she did not know. As a result, she gave birth to Kaori, she did not really know who her father was and only dared to lie to her that she and her husband had divorced early. Since giving birth to Kaori, she has been able to calm down and control herself, she no longer has sex with anyone else but only focuses on taking care of Kaori, raising her to adulthood. Time passed, Kaori is now married. Kaori’s husband is Hiroyuki, a very kind and gentle person, he has helped Saeko a lot. However, one night, Saeko witnessed her son-in-law and wild sex, Hiroyuki fucked Kaori like a beast, causing memories of the past to flood back. It had been so long since she had enjoyed that feeling of pleasure that she couldn’t calm down and came up with a very wrong idea. On the occasion of Kaori traveling with friends, she changed into a thin and skimpy yoga outfit. She continuously made seductive moves on Hiroyuki, causing him to gradually fall into the sexual trap that she had set up waiting for him…