Lately, my wife has been watching fitness videos on a certain channel, then constantly complaining about weight gain and dieting. The female trainer in the video is Yu, a gym instructor in Tokyo. The video also introduces a private exercise instruction course for subscribers. A few days later, we went to see Yu and she showed me exercises to lose weight and strengthen muscles. She was especially kind to me, but every time my wife wasn't paying attention, she seemed to intentionally get closer to me. We were introduced to 1:1 private training sessions so that Yu could easily adjust the progress for each person. And when it was just me and Yu, she was more daring than before, she continuously made arousing movements, showing off her seductive curves in front of me. She even kissed and gave me a "blowjob"! I don't want to betray my wife, but Yu is so attractive that I can't control it...