Fuyuha, a nonchalant young man, and his best friend Chiharu are sex friends. Both love to party, have fun and put on a show at parties. However, the club they are a part of has a nemesis, Nanatsu, an elite boy and notorious flirty Ikemen known for having slept with over a thousand people. Fuyuha decides to stay away from it, but one evening, while at a club with Chiharu, he inadvertently finds himself in the backroom due to the darkness. Believing to be seated next to his friend, Fuyuha begins to give a blow job and carried away by the movement, lets himself be penetrated ... To suddenly discover that his partner is in truth this runner of Nanatsu ...? !! Find the story of Nanatsu and Fuyuha, as well as that of their two friends...