That JAV

Six girls with H-cup or bigger boobs exercise in the nude! They stretch their bodies to loosen them up, and then they use jump ropes, hula hoops, balance balls, etc. to make their boobs sway with great force. The exercises end with masturbation, toys, and tit-fucking to make them feel good. This is a full-fledged fetish angle that you will never see in the usual way.