Yui, while her husband was on a solo assignment, ended up having a relationship with her only son. Knowing it was wrong, she couldn't withstand the loneliness. Their deteriorated relationship continued quietly even after her husband returned from his solo assignment. Yui was always anxious about when her husband might find out. However, her son... was enjoying the thrilling situation. Before long, Yui found herself being attacked by her son as soon as her husband left...
