Jungmin is a playboy, and despite warnings from the other members that he'll get burned if he keeps playing with fire, he ends up making a mistake that he cannot take back.  He is forced to make amends by an unliekly colleague, and he soon finds himself more and more interested in the girl whose life he derailed.  The only question left to answer is whether or not he can truly change, and not just for his own sake.

It only took one night to get him hooked. Now, Junhyung sneaks off any chance he gets to Tokyo's Kabukicho red-light district, and he risks a lot in doing so. Their promotions end in a week, but there's one thing keeping him from wanting to return to Korea and his regularly scheduled life, and he can't quite figure out what that is that draws him away from what matters most to him.