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.