Kim jongin (Kai) - The expert playboy of the school , in a group called exo the school kingka , loves to flirt .. But as the bet go on will he change or remain? Will he fall in love during the bet ? (; Jung soojung(Krystal) - The ice princess , look cold outside but she s kind in the inside , in a group so call f(x) the queenka , what will she do after realize everything was just a lie ?