Your school owner is your step father also your step brother jungkook is a professor on your school he is very cold and also serious for his job.one day you on school walk in corridor in class time and use your phone but you hear a cold voice its your step brother as you professor jungkook you try to run away but he caught you

Jungkook :"what are you doing in class time in here go to you class now!!"he cold and serious look shouting on mad voice at his step sister also his student in school