Popular curvy wife Miyu Morita joins a swimming class to relieve the stress of a sexless marriage. Flirting with the lecherous instructor soon breaks down her restraint; she lets him touch her everywhere, then sucks his cock until he cums. They move to a bed, where he sucks her huge breasts and fingers her pussy. She eagerly returns the favor with oral and a titjob, gets carried away by the sex, and finally takes a creampie that leaves her thoroughly relieved.