Popular curvy wife Miyu Morita signs up for swimming lessons to relieve the frustration of her sexless marriage. Flirting with her horny instructor soon destroys her restraint: he touches her all over, and she ends up sucking his cock until he cums. They move to a bed, where he sucks her huge tits and fingers her pussy. She eagerly returns the favor with another blowjob and a titjob, gets swept up in the sex, and finally takes a creampie that completely satisfies her pent-up desire.