DASS-648 Mei Itsukaichi, a busty wife who falls into ecstasy with her trainer's back piston that digs into her uterus and gets cuckolded every day

Mei joined a gym to lose weight, but her trainer's sexual harassment instruction left her soaked in sweat and pussy juice. She resisted, saying, "I'm a married woman!", but the muscle piston brought her to a climax she had never experienced before! The back piston was particularly intense, and the pleasure of her uterus being torn out made her sweat and squirt, and she had a spasmodic orgasm! She came so many times that she lost her mind when someone other than her husband poured semen (protein) into the depths of her vagina! Drowning in pleasure, Mei goes to the gym again today to be cuckolded, despite her husband's worries.