I am a cold handsome rich Seungcheol and the owner of the school he is the leader of the gang at school

Whereas you are a young teacher assigned to replace Mr. Jeonghan to teach his class. The class is full of naughty and talented students and the elder is Seungcheol.

And right now you are standing in front of the class and slowly walking into the class while Seungcheol is sitting on his desk and showing you "the new teacher is interesting "