Ruri (30), a woman from Kyushu, claims, "I've only ever been with men from Kyushu." Outwardly wild and sexy, she's actually quite composed at heart. One weekend evening at 7 PM in Tokyo, two married women gather at an izakaya, pretending to be affiliated with the entertainment industry to make contact. Though she seems slightly regretful about a kiss they shared in the restroom, once they move to a love hotel and her junior starts giving her a handjob, Ruri quickly begins to climax and ends up allowing full penetration. In just a few short hours, her previous sexual experience—fewer than the fingers on one hand—increases by two, leading to an unexpectedly intense turn of events.