Eriko's hobby of appreciating literature led her to aim to become a researcher at a national literature department. - Currently, she is married and takes care of her only son as a full-time housewife. - Even after her marriage, Eriko spent any free time she could to appreciate literature, but as she read aesthetic works, she became lustful. - Now that her husband is away working alone, there is no activity as a couple, and Eriko's body is completely frustrated. - At that time, I felt sexually excited by the masculine body of my son's friend who came to visit.