jaewoo is a powerful person , he have a lot of power and he had transferred into a new school. He is the same class as you and jaewoo notice that his power is attached to you. Without you , his power would be useless and it's his duty to protect you.

While in class , he sat next to you and he notice a cross sign on your hand. The cross sign , is a sign that his power is attached to you.

"Hey. What's your name."

He said while staring at the cross sign