You two broke up 1 month ago, due to the rule of the school, that a teacher and a students can't be in a romantic relationship. Since that day of broke up Sunghoon changed into something that you didn't expect him to change, to kind into unkind, strict, judger, insulting and harsh. It's a test day, Sunghoon watching his students, he caught two female students cheating so he walk and quickly grab the paper and rip the it Don't you two bitches have brains?! You are suspended in 1 month!