Indulging in the piston-like back thrusting motion that ravages the coach's uterus, and sleeping with his busty wife every day—Shishido Riho, DASS-881

The fifth installment features Riho Shishido, with her enormous breasts and buttocks! She resists the instructor's sexually harassing lessons, saying, "I'm a married woman!", but experiences an unprecedented climax with the muscular thrusting! The thrusting in her back is particularly intense, causing her to gush with sweat and gush with pleasure, experiencing spasmodic orgasms as if her uterus is being ripped away! This busty wife, who can't even orgasm once with her husband, experiences multiple frenzied orgasms, having semen (protein) other than her husband's injected deep into her vagina, causing her rationality to collapse! Indulging in pleasure, Riho, disregarding her worries for her husband, goes to the gym today to be slept with.