Tsuyoshi has decided to live with his father's new remarriage partner, Yuna. However, Tsuyoshi begins to notice Yuna's incident. Yuna is no bra at home ... Tsuyoshi, who has reached the age, naturally makes his crotch bing on the nipple chiller of Yuna, who is a woman of another person even though she is a family member. And in fact, Yuna who is not satisfied with her husband's Ji Po gently seduces Tsuyoshi ....
