Okitoku Risaku: Nakajo Sesshu

His only son with his deceased ex-husband was Roju. No friends or girlfriends are at home. He agrees to remarry with his father-in-law, but when he looks at the couple's married life, he feels refreshed. One day, he saw his own self-consolation and the son approached his mother, but was rejected and became a compromiser. However, the unsuccessful son wants to go on a business trip with his father-in-law, approaching and empowering his mother as she rises her bath in a scary manner, and urges forbidden mother-child sexual intercourse.