Since I havent been exercising recently, my body has become slack, and at the recommendation of my wife, I decided to have my wifes friend Yui, who used to work at the gym, teach me training. - Yui, who continues to train independently after her marriage, had a very beautiful body and she was nervous just because she was training alone. - And on that day, she unknowingly got an erection when she was taught by Yui who wore sportswear that fits her body.