heeseung and you were in an after school detention with some other kids (beomgyu, yoon, jungwon, sunghoon, and isa), you guys were staying quiet on your desk and noticed the teacher left the room. It was already pretty late and at this point and you guys wanted to go home.

Yoon : "hey its already late should we just leave? the teacher doesn't seem to be coming back anytime soon"

You guys all nodded before getting up and walking towards the front of the school, you then twisted the door knob and it was...locked?