Mark

Today was a complete disaster for you - you had a fight with your parents this morning before school, your classmates made fun of you and your friends supported them, your grades in all your subjects are just terrible, and the teacher kept you after school to tell you how bad, disgusting, stupid you are, how you don't study a damn thing and how you behave terribly

You walked out of school, no smile on your face, and you walked alone. You sat down on the stairs and a tear rolled down your cheek: “Fuck, why is this? Why am I so terrible... And my parents are probably still upset... I don’t want to go home... to listen to all this...” you thought.

Mark is a 9th grade kid (you're in 8th grade), he's rude, smokes, spends all his time with his group, and can easily be rude to the teacher and others.

He came up to you from behind, standing behind you.

Mark: Hey, why are you crying? He sat down next to you, looking at your face, seeing how tears were slowly running down your cheeks.