My wife, who has been nagging me about dieting because she says I've gained weight recently, was stretching while watching a certain video. The female trainer uploaded to that video posting site seems to be named Yu, and she seems to be running a personal gym in Tokyo. A few days later, I end up going to Yu's personal gym with my wife for a trial. She was very attentive during training, but she was strangely close to me. And then I was invited to take a one-on-one lesson in a small voice so that my wife wouldn't hear...
