Sanada, a perverted employee who pretends to be serious, is secretly looking at pictures of girls' anuses he found online on his smartphone during his break when his boss suddenly shows up and exposes his sexual preferences. After being exposed on the company chat and treated like a pervert, Sanada is dumped by his girlfriend and decides to take out his pent-up anger on his boss's wife, Maki. Sanada is mesmerized by Maki's beautiful anus, which is in proportion to her beautiful face, and he worships her beautiful anus in a daze, having raw sex with her over and over again...