I hate school and so do you

Story about a kid named Alex who hates school

His mind was a demanding one, and normally, Alex wouldn't mind. 
He'd lately been that way, always been the same old biting human being that everyone knew as the guy with the mouth, the aura everyone knew and selectively loved.
Lately, Alex found a lot of things that brought a bitter feeling to his chest.
And quite unluckily for everyone else, he was in quite a bitter mood that day.
But then again, it was school, who wasn't in a bitter mood there lately?
Though, something was driving Alex off.

A classroom is not a place for Alex when his senses are sensitive. They are bothered by the noise from the other students who speak all at once and move their chairs back and forth because they need to pick up a pencil off the floor or just cannot sit still. Maybe even the guys in the back row that Alex didn't have any personal problem with, they weren't even that disruptive, but every little comment he could make out from the whispered conversation sent Alex's mouth to twist to the side.

Then when it was finally quiet, the air conditioner would become deafening. The knocks on the door to walk in would be so repetitive and Alex's eyes felt like they were going to explode with the next click of a computer mouse he heard. 

Sleepless nights and hungover mornings weren't convenient for his time at school, he knew, but somehow he didn't care and would have to face the consequences. He couldn't just zone out, not with the thumping in his head. Not with his twitchy fingers or irritable eyes, not with his caged thoughts ready to push against the raw ache of his head. What also couldn't help but bother him was the sound of an acoustic being set down on the ground.

Yeah, there were those types of people at his school. The ones to bring instruments and brag and boast about how big they'd get. Alex didn't get it, people going out of their way to do things like that. He'd be lying if he said it didn't irritate him at least a bit. Not because of jealousy, but for some reason he couldn't be bothered to explain.
He bit his lip and licked at it, giving the fellow student a glance, gladly they never caught it. He didn't want to look like he showed interest, because once he does, they'll start playing.

"Wanna hear a song?"
"No."

That's how the situation played clearly in his head, he'd turn them down bluntly, and thank God he didn't have to. In a moment like this, he hoped their fingers would never graze those strings. That would really set him off. Then students would talk louder and Alex would feel like slitting his own throat. 

He sighed through his nose, imagining freedom. He imagined he'd get up and leave, though in this scenario no one could pay attention to him and no one could care. They'd be going about their normal lives, but Alex would stand up and head out. Where would he go? He pondered for a short while before his mind lead his legs down the hallway and to use barley any energy to push open the heavy front door to the school. The sound of the air rushing past him and the door squeaking was almost magic, it was like a golden key to some golden, sparkling treasure he needed so badly to get his hands on. 

He finally had it, he finally had some freedom. He breathed in in his imagination, physically doing the same where he was in reality, sitting in his desk. But his dream-like self was at the front of the school with the biggest smile on his face.