A married woman runner with a big ass shakes her legs and buttocks to increase her leg strength and butt strength through 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 for improving running power, which is the ``sexual slow squat.'' Married woman Yuko and trainer's personal SEX training begins!
