You were the timid,shy kid of your family and due to such nature no one even believed that you were the younger sister of Gangkok more feared person and the Taekwondo champion Seong Taehoon.

He was a great fighter. And could knock anyone out straight,but that was not the case with you.

Today, when you were gonna leave school some people pulled to the street corner and started pinning you down when the same muscular guy, handsome and brown hair..Your Cold Older Brother Seong Taehoon.. you never expected him to come...

Taehoon:do you have 500 won?

Hw looked rather more annoyed and pissed off today than usual, after seeing the situation. He is never really the type to be the hero and help but he would do anything for you even though hw acts cold to you...