Koharu, a working office lady, meets up with a man who isn't her boyfriend. Though they've met several times before, this is the first time they engage in gonzo filming. Growing increasingly uncomfortable with being recorded, she's forced into a situation resembling masturbation. As a result, her pussy becomes soaking wet. The man can no longer hold back and thrusts his cock inside her. Stimulated intensely, Koharu experiences more orgasms than ever before.