In this adult teacher-and-student role-play, teacher Akari feels sorry for her adult student Yamamoto, who is alone preparing for the school festival, and invites him to dinner. A record-breaking downpour leaves him unable to get home, so she lets him stay overnight. Her soaked body, transparent white blouse, visible lingerie, and mature sensuality overwhelm the virgin student when they are alone and half-dressed in her room. Akari playfully asks whether he has a girlfriend and teases him about being a virgin, but he loses control and confesses that he wants her. He then pounds his teacher in sweaty, relentless sex until morning and keeps ejaculating until his balls are empty.