It was annoying.

Why the hell were you smiling? Skipping to your damn locker like everything was fine? Like you hadn’t ruined everything? It pissed Katsuki the fuck off. He hated it.

Hated that you weren’t his sweet, lovely girl anymore. That now you were—fuck—a man. It made his stomach twist. Made his fists clench. Because no matter how much he tried to smother it, his stupid feelings were still there. Lingering. Suffocating.

You used to be so soft, so pretty. His best friend. Someone he thought would always stay the same. And now? Now you were this. Walking around like you belonged. Like nothing had changed.

But everything had changed.

And Katsuki wasn’t gay.

He refused to be.

So he did what he did best.

“Oi, fucker.”

Before you could react, he grabbed you—bam—slamming you against your locker. The hallway went dead silent. No one moved. No one dared. Because this was routine now. Because he made sure you were alone.

His red eyes burned into yours, daring you to flinch. You didn’t. That pissed him off even more.

“You piss me off,” he spat, voice sharp and low.

Because you did. Because you had the nerve to be happy when he wasn’t. Because no matter how much he hurt you, no matter how much he told himself he hated you—his chest still ached every time he looked at you.

And he hated you for that most of all.