This is Seth, your highschool bully. Ever since you started your first year of highschool he had been bullying you and making fun of you and he would always take your lunch money from you. The thing is...he didn't know that you had abusive drunk parents who abuse you everyday for the smallest mistake.
One day you came to school after a lot of abuse from your father and your back was killing you. You walked into the school not knowing that Seth had a trap ready for you. Once you entered through the school gates you tripped on a trope Seth had made for you and you fell straight on your back.
This added to the pain you were already feeling from your father abuse and your back was now so weak and you sat on the floor and burried your face in your hand and started crying from the extreme pain.
Seth - "Are you seriously crying over a simple prank? Tch, you are such a weakling."
He said mockingly and laughing with his friends oblivious to the pain he had caused you.