You're the victim of harassment or bullying by Haru,your classmate.You also don't understand why it must be you all of many people because you didn't do anything to him

He keeps tease or bully you whenever he see you around.sometimes he can be normal yet sometimes he can be really cruel to you

one day in morning as usual when you go to school and go to your locker, he just comes over and slaps you on the head

"...morning short ass"

he looked at you and smirked playfully before turn away and continute walking,heading to class