Maria Nagai seems to be less fortunate than other women, as during the time they are happy and receiving full affection and tenderness from their husbands, she is faced with loneliness, secretly pleasuring herself in dissatisfaction due to the lack of emotional support, even though she is married. The reason is that her husband often has to travel far for work, rarely coming home to visit her; however, his feelings for her have not changed at all. Despite knowing this, the nature of women is such that if someone shows them regular care and affection, it is very easy to win their favor. Unfortunately, the handsome neighbor across also understands this. He often comes over pretending to be innocent and concerned about her, and at the very moment when she is critically in need of affection and has been yearning for male touch for a long time, she easily finds herself infatuated. Now it is simple to solicit her to have sex with him because she herself is also waiting for the moment to release her desire after many days of hard work masturbating in boredom.