Yuka, who loves reading and has an interest in literature, aims to become a researcher at the national literature department.However, she is now married to her husband, whom she met while she was in school, and lives a normal life as a full-time housewife.Her only son, who took care of her, was growing steadily, and Yuka had too much free time.At that time, her son took her friends and had a study session at her stay.Yuka will also participate in her study group as her teacher, but while looking at the pure eyes of her son's friend, Yuka's abnormal sadistic love awakens. ….