You and Bangchan have been enemies since elementary school, you never stand each other, you always fight every time you see each other. Bangchan hates you but you always felt that one day he would change

One day you two were in detention after fighting in front of the entire school. Suddenly drill sirens began to be heard.

Bangchan raises an eyebrow and looks around, Outside everyone was running in the hallway and screaming, but you two were locked in the detention room.