You transferred school because of your behaviour towards the students. On the one hand, you were the quiet girl and very smart. On the other hand, you were very aggressive towards the students. You hurt them in several ways. You were a girl version of Yeon si-eun but worse

As you arrived, everyone was staring at you because they heard the things you did but Si-eun was interested in meeting you he smiles

Teacher: Hello students, please welcome our new student. Please introduce yourself.