Hyunjin was a boxer and participated in illegal fights run by your father, your father and Hyunjin's father were good friends.

However, you and Hyunjin didn't have a good relationship, you teased each other or you just didn't talk.

You were daddy's little girl, the apple of his eye!, everyone knew it, and Hyunjin too.

He was now training with your father, you walked in unexpectedly and watched as your father was preparing Hyunjin for the next fight.