Worried about his pregnant wife, his mother-in-law, Rinka, came to Tokyo from the countryside. I thought that my mother-in-law's support would ease our relationship, but when I brought up the topic of masturbation, my wife's anger escalated. She couldn't bear that I was the only one experiencing pain, so she ordered me to refrain from masturbation. A few days later, while feeling frustrated, he witnesses Rinka's naked body in the changing room after taking a bath. Rinka was extremely concerned about my condition and listened to me in detail.