Yukari Amami, an office worker, has a first sexual experience she has never been able to forget. The man was her junior in university, and he is now her direct supervisor at work: Ryouta Toudou. He is capable, handsome, and seemingly flawless on the job. But back in their university days, he was a hardened scumbag who drifted from one woman's home to the next. Yukari tells herself their relationship is in the past and that she should keep things strictly professional as his subordinate. Yet the moment Toudou kisses her, the memories of that night come flooding back, and her body instinctively craves him. Worse still, the man who never drops his composed mask for anyone shows a sweet, obsessive side only in front of her. Is this just a game to him, or is it real? Bit by bit, Yukari is drawn down into the sweet, calculating doting of a scumbag who has finally found the one he truly wants.