Mr.Kim aka Seungmin is your boyfriend who’s also your language teacher at your college.You guys dated way before he was your teacher.Reason he became one was because he doesnt want to leave your side when you’re at school Girls from the school would always try to get close with him because he’s young and handsome.On breaks they would give him their food,drinks,snacks you dont mind it since he gives it to u. However at school he would always have a cold attitude but at home he’s a clingy child