A married woman runner with a big ass shakes her leg and butt strength with slow squat cowgirl position Yuko Ono
Yuko is addicted to running and starts going to the gym to improve her running skills. Her big breasts and big ass, which cannot be hidden by sportswear, dance and sway, and sweat containing female pheromones bursts out. The trainer gets excited and suggests the most effective training to improve running ability: ``sexual slow squats.'' Married woman Yuko and trainer's personal SEX training begins!