Personal Gym NTR - A shocking cheating video of a wife who is addicted to the strength of a trainer

A few years after marrying his wife Ai, Ai, recently started to worry about her body shape, saying, "Have I gained weight...?" He was originally thin, so even when he told him that he was okay, he didn't listen, so they ended up joining a trial member of a personal gym. In the end, I'm not good at sports so I quit soon, and my wife only went to the gym. Just being alone with a muscular trainer makes Ai feel anxious, but her clothing becomes more revealing every day. And I was suspicious, so I secretly put an IC recorder in Ai's bag...