I was a plain, uncool guy who was not popular with girls, but after a lot of self-improvement, I've become a fairly well-known model. One day, I meet my friend from my school days, Chiharu. Chiharu's boyfriend, Riku, is someone I once had a crush on. The three of us go out to dinner, and I decide to take Riku while Chiharu is asleep. After that, I started meeting Riku more often, and began training him in reverse anal sex. I want to see more of the face he makes when he has a female orgasm, a face he's never shown to Chiharu...