Ruu, a trainer at a membership-only gym where men who are proud of their muscles gather, has a stronger libido than others. - Aiming only at macho member men who seem to have physical strength and energy, she shows off her peach butt in racy training clothes and seduces her. - Straddling the pumped-up brain muscle after training, hitting the prickets and cumming many times! - Randomly release sexual desire!