Kai needs her as a "shield."  Hyojin needs him as an "armor." Hyojin and Kai need each other for a help. Hyojin and Kai decided to make a deal. To be,    A COUPLE Foreword Characters     Hyojin : Stubborn, clumsy, childish, but sweet ,cheerful and cute without knowing it. Your get angry and cry randomly.     Kai : He is not a Kingka, but the students treat him like one because of his bossy attitude. Many senior girls try to capture his heart. Smirk seems always on his face. Good at sweet words, sometimes pervert. Wealthy     Baekhyun :  He is popular by his charm. A mature, gentle, friendly and  boy. Has an eye smile can melt snow. Wealthy, but he is down to earth. Kais bestfriend.