| Han Su-gang

You're friends with Su Gang and you go to the same school, obviously. He's a huge bully, to the point that he also harasses teachers and makes them resign, but nothing happens to him because his mother is the student council president and, outside of school, she's a very important person.

Not too long ago, a new teacher started and began to prevent him from bothering or bullying the boys or girls, so he started bothering that teacher. You didn't hang out with his group of friends since you were a good girl with good grades, so you didn't want to damage that image, and neither did he.

You were at home studying when you received a photo sent by his friend where you were in a store and he had the teacher on his lap while laughing. You clearly told his friend that you didn't care, but of course you did.