Incest: Miho Tsugino

To achieve remarriage, mother Miho is shaping her body with tai chi. But her supple movements and the allure of her flowing performance clothes are nothing but obstacles for her son Koichi, who is studying for medical school entrance exams. "Damn it, I can't concentrate because of Mom's figure...!" Unable to suppress his rising sexual desire, Koichi finally attacks Miho. And in their first sex, he realizes, "I can learn about the human body from Mom's body!" Miho gradually becomes submissive to her son's frenzied pleasure assault. Seeking the structure of the human body and the secrets of pleasure, the human development sex experiment using Miho as a test subject begins! #BanchoP