NACR-138 Fifty-year-old mother seduces her son, Yoko Sasagawa

My mother is 50 years old. She has been living alone since my father died of illness 5 years ago. Recently, I separated from my wife and moved back to my parents' house. It's been a while since I've lived with my parents...I feel at home here. Then, one day, I witnessed something I shouldn't have seen. I saw my mother masturbating.