That JAV

Riho and her boyfriend, a working couple, move into a new house with a view to getting married. Riho is excited about the prospect of a happy life, but she is troubled by the fact that her ass starts moving on its own, as if it has another personality. She meets Okada, a struggling student, when she moves to a new place. Worried about Okada's unhealthy lifestyle, Riho telecommutes home to provide Okada with food and take care of him. Riho is not satisfied with sex with her boyfriend, and while cooking lunch at Okada's house, she gets a tingle of lust in her ass, which leads her to seek Okada's meat pole at his side.