After a personal training session, a private massage session is held, where the two of them are alone in a closed room for some intimate sex! A private, one-on-one, one-on-one session between a man and a woman, in a space where no one can see... and it's erotically intimate! Under the guise of a massage to relieve muscle fatigue, an extreme penis breaks out! The female members' reactions to the male trainer's groin, which keeps hitting them, vary... from reluctant to intimidating...