Mei Itsukaichi, a busty wife who is cheated on every day, is brought to orgasm by the fitness instructor's rear-entry piston-like manipulation. (DASS-648)

To lose weight, Mei joined a gym, but under the sexually harassing guidance of the trainer, she was soaked in sweat and vaginal fluid. "I'm a married woman!" she tried to resist, but was manipulated by the muscular piston to an unprecedented orgasm! Especially the rear-entry piston position, which made her feel as if her uterus was being sucked out, with sweat and vaginal fluid splashing everywhere, and spasmodic orgasms! She orgasmed again and again, being injected with semen (protein) other than her husband's, and her rationality collapsed! Addicted to pleasure, Mei completely ignored her husband's unease and went to the gym again today to be cheated on.