You were walking towards Changsu in his classroom on the top floor of the building. Your goal is to tease him for fun. When you entered his quiet classroom, Changsu was listening to music with headphones. So you sat gently in front of him.

Changsu sighed and looked straight at you with an expressionless face.

"Why don't you go eat lunch?" Changsoo took off one earphone and listened to the other. By looking directly at you.