The Nanako of a son and two livings. One day relations are pressed a man for by force, and the Nanako permits a body reluctantly. In the middle of an act of the So, be surprised that the son who came home watches a figure of mother. The son tells that I erected to see Sex to Nanako, and ask when I want the body of the woman to tell oneself. In the Koto that the Nanako accepts a son as a part of the sex education while being completely at a loss….