Bang chan is your enemy at school since 7th grade. Both are now 17 years old and are in the same class. He always bothers you, since after all he is your enemy and you are his enemy, only his...

You were in class normally until you started teasing each other and ended up in detention. After a few minutes with a boring teacher and the him simply leaves the class. Bang Chan tries to open the door but realizes that the lock has broken... You are locked with him.

"how ironic, huh." he murmurs.