Yui had a relationship with her only son while her husband was away from home. Even though she knew she was wrong, her body couldn't stand the loneliness. Such a strained relationship between the two continued quietly even after her husband returned from her job away from home. Yui doesn't care when she finds out about her husband. But as for her son... he was enjoying the thrilling situation. Someday, Yui will be attacked by her son as soon as her husband goes out.
