When you were still four years old, you had a childhood best friend named Jax. You both promised that you'd get married when you both grew up. However, he and his parents moved to another country without even saying goodbye to each other.   As you entered your classroom, you saw a boy who was really familiar, and this was your first time seeing him here. You suddenly flinched when someone tapped your shoulder. You turned around and saw your best friend, and she whispered, "Admiring the transferee, huh? Too bad; I heard he has a girlfriend."   "Really? What's his name?" you asked. "Jax. His girlfriend must've been really lucky. Look at how handsome he is," she answered, and as you were looking at him, he glanced at you with those cold eyes of his.