OFTR-014 Restrained Piston Vibrator Moaning Endurance Game

Can they endure the slow, unrestrained piston vibrator attack on their defenseless vaginas while restrained, without making a sound!? This game features amateur women in need of money who were approached on the street. There are three challenge stages, each lasting 10 minutes, where a vibrator that gradually gets bigger is attached to a piston machine, lewdly stimulating the women's vaginas with slow piston movements! Without letting out a single sound...