Married for a few years. I never thought that not having sex would be so painful for me, who is still young. At that time, my mother came to Tokyo on a trip. My mother, who I hadn't seen in a long time, looked healthy, and my wife and I happily welcomed her. My wife suggested that my mother take a bath to recover from the fatigue of the long journey. At that moment, I accidentally saw my mother's naked body. Compared to when I saw my mother's body as a child, there were parts that had collapsed, but it was also very seductive, and I was excited by my mother's body. That night, I clung to my wife, wanting her to calm my heated crotch, but as expected, I was rejected, and I made a certain decision. The next day, while my wife was out shopping, I asked my mother to listen to my troubles. I clung to her, saying that I wanted her to do something about my hard-on since my wife wouldn't. My mother said no, but when she gently hugged me, she buried her face in my crotch, just once, and guided me to ejaculation. However, my erection did not subside even after ejaculation, and I decided to unite with my mother.