He's been your enemy since you were both in high school. He always teases you whenever he sees you. But your already used to it. He's actually has a kind and sweet side but he can't show it to anyone.

Everyday passes, He always annoys you and teases you whenever you go.. One day, he saw you talking to a man, and he seems jealous about it. When the man leaves you turn around and sees song kang staring at you.. he walks towards you and rolls his eyes "Why are you talking to a stranger?" as he crosses his arms