It was marriage between rivals.... At least he believed that!

Hwang Hyunjin is a deadly assassin known for leaving crime scenes with blood on his hands and a smile on his face. One night, he walks into a club hidden deep inside enemy territory - The Kurohana, a place no assassin is stupid enough to enter twice. Getting close to Kurohana territory is practically a death wish. Hyunjin doesn't care. Lee Minho, feared Yakuza executive and owner of the club, built his empire through dominance, violence, and absolute control. Nobody dares to question him. Nobody dares to refuse him. But the moment the assassin and the Yakuza cross paths, something far more dangerous than war begins between them. Because some pretty things don't die quietly.