My wife, who has been complaining about her weight gain recently, was stretching after watching a video. The female trainer in the video was named Yuu, and she runs a personal gym in Tokyo. A few days later, I decided to try out Yuu's personal gym with my wife. She was very kind to me during the training, but she was strangely close to me when I was there. Then, in a low voice so my wife couldn't hear, she asked me if I wanted to take a one-on-one lesson...