Your MC is immediately unlikable, which isn’t good. I have no empathy nor sympathy for him, which begs the question: Why should I continue reading?

Your storyline is unbelievable to the point that I thought it was all a dream until I finished, and it wasn’t a dream.

Am I missing something? MC shot a dude, and no one’s reacting? Two girls approach him, fine and dandy after he shoots someone? Everyone just goes about their day? What’s going on? Did he imagine shooting the dude, and the two girls who approach him snap him from his spell? Or did he seriously get sent to the principal for shooting a dude?

That wouldn’t happen. If you’re going to write about such a sensitive topic, I suggest doing research on said subject. I would suggest research on any topic you aren’t well-versed in.

As is, there’s nothing to like about the story, in my opinion. It needs a lot of rethinking.