When Sunoo came to his Bestfriend AKA Jungwon's school Niki had a crush on sunoo but didn't know what to do so what he did is bully and tease him to be close with him
They are the bad boys of Seoul International High School. The thing is that they hate each other for some reason.
"-Look I don't wanna be a jerk to you anymore and I hope you won't pick on me either. I actually think you're nice and I wanna get to know you.
-W-what? Are you really Sunghoon?-asked Jake in disbelief. -Are you crazy? You were a jerk to me for years and now you just want to be my friend? Just go away Sunghoon I don't wanna listen to your bullshit."