In front of her beloved mother… A busty female college student, brainwashed and subjected to aphrodisiac-laced sex and depravity by her stepfather's penis, is subjected to sexual manipulation and orgasms. (JUFE-386)

College student Hane loves her mother, who raised her single-handedly, more than anyone else. But then her mother suddenly announces she wants to remarry… The man her mother brings home is gentle. Hane, introverted and not particularly enthusiastic about remarriage, changes her mind when she sees her mother's happy expression. However, that man, "Tamura Yasushi," is a rare and ruthless man. He brainwashes her mother with aphrodisiacs and sweet talk. After "training" her mother, he then preys on Hane.