i'd rather have a mother than a wife. Fukutomi Ryo

My husband has passed away and I live with my daughter. Six months ago, her daughter's marriage was decided, and now she is living happily with her daughter and wife. except for one thing. One day, I got excited about the sex of my daughter and her husband and had a masturbation by myself. He was seen by his daughter-in-law and had a relationship with her. I feel sorry for my daughter, but I can't stop having sex with her. when i realized it, i was fascinated by my heart...