Yuko has become addicted to running and has started going to the gym to
improve her running ability. Her big breasts and big ass, which cannot be
hidden by her sportswear, dance and shake, and sweat containing female
pheromones bursts out. The trainer is excited and suggests the most
effective training to improve her running ability, which is “sexual slow
squats.” This is the start of Yuko’s personal sex training with her
trainer!