That JAV

A three-day, two-night lower-body training camp for girls in the track and field team! The girls squat right above the coach's fully erect penis! When they reach the limit of their muscular strength and sit down, they are inserted with a big thrust! The female members of the club desperately endure the top-secret erotic training to thoroughly strengthen their lower body, which is necessary for athletics, while wobbling their lower bodies! But one by one, the less physically fit girls fall prey to the penetration! Then, their bodies are ready for more pleasure, and the sex becomes more and more intense! The parents are unaware of the camp's dirty training...