Chapter Text
Katsuki should’ve fucking seen it coming.
When he found out he was going to supplementary lessons with that shitty Half ‘n Half bastard he should've expected this kind of situation. Still, it caught him off guard.
They had arrived after a long, long, long day of training, and while he liked practicing and training, he was also fucking tired. He didn’t want to do anything besides finish Present Mic’s essay, go to bed and pass the fuck out, but a knock on the door disconcentrated him.
He barked for the person to go away, but the door was unlocked and Half n’ Half was a motherfucker that couldn’t seem to comprehend that Katsuki didn’t want to human right now. Fortunately, the bastard always has been shitty at that too.
“Bakugou?” he asked with that annoying toneless voice, instantly bugging Katsuki to punch him and poking his head inside the room “I need your help”
“What do you want, dipshit?” he said without sparing him a glance. He entered the room and closed the door behind him.
“I couldn’t understand part of the training today”
“Sounds like a you problem.”
“I was wondering if you would mind explaining it to me.”
Katsuki had to give Icyhot points for the courage to ask him this, because he was so fucking close to exploding him out of the building.
“ Yes , I would mind. Get out.” he wouldn’t help fucking Half n’ Half, not when he was still farther in the class ranking than him.
“C’mon, Bakugou,” he said while stucking his hands in the pockets of his pants “Don’t be a dick.”
Katsuki slowly lifted his head from his homework and glared so hard at his blank, dumb face he thought he might pop a vein in his head.
“Do you want to fucking die ??”
“No, I want to understand the lesson we had.” Oh, no shit .
“‘S not my fucking fault if you’re so dense you couldn’t get it.”
“But I’ve already seen you tutoring some of our classmates.” he said it as if it was the biggest news on the fucking century “Certainly you could do the same for me.”
“No, I fucking can’t ”
“It’ll be just today. It’s just a small part of it.”
Katsuki deep breathed and pinched the bridge of his nose, considering the pros and cons of blowing up his own homework (that wouldn’t be the last time he would do it, though).
“If I do this, will you leave my fucking room?”
“Yes.”
“Then get over here, you shitty motherfucker.”
Half n’ Half had a surprised look on his face 一 the most surprised he could look, being emotionless the way he was 一 as he quickly walked towards Katsuki, who was seating in his desk chair. To be honest, even Katsuki was surprised he didn’t just told him to fuck the fuck out of his room and never fucking talk to him again, but he was tired and wanted to sleep. If he did this quickly than maybe, if he was lucky, fucking Half n’ Half would leave him the fuck alone.
And, to be fair, it was pretty quick. The bastard didn’t sit down, choosing to stand like a moron by the side of the desk, but he was direct to the point. He seemed to be enjoying this as much as Katsuki himself was, so he just asked the questions he wanted and Katsuki answered them the same way, sometimes scribbling what he meant on a piece of paper to see if he would understand already .
The whole thing lasted, at most, fifteen minutes, but for Katsuki’s heavy eyelids and very short temper it was like an eternity. But finally, finally , the bastard was done with his questions and he would be able to finish his assignment and sleep.
“Thank you, Bakugou” he said as he was opening the door to leave “That really helped.”
“Whatever, now get the fuck out ” he said tiredly and glared at him “And close the godamn door before you leave.”
And then it happened.
The exact moment when hell broke loose.
Half n’ Half was already in the hallway, but when he heard what Katsuki asked he turned towards him, smirked , and closed the door until there was just two inches of it open and just. Left.
What. The fuck.
Katsuki stared at the partially open door with utter disbelief. When his mind recovered from the shock, he growled, explosions popping in his clenched fists and yanked the door open with renewed disposition just so he could kick the Icyhot’s ass up to the moon and back, only to find out he wasn’t anywhere near anymore.
He clenched his jaw tight and tried to contain the explosions forcing their way out his palms. He slammed the door shut with as much strength as he could gather and plopped himself back in his chair. Fucking shitty bastard.
Whatever. It wasn’t like that bitch would go into his room anymore.
(Spoiler: he did)
At first, Half n’ Half at least had some excuses to come back to Katsuki’s room 一 even if they were fucking ridiculous. He would open the door and ask something about joining others in dinner, or something about the training, or about what he was doing.
Katsuki would never put much effort into answering, prefering to just tell him to fuck off and leave him alone. And then 一 and then 一 when he asked him to close the goddamn door, he would simply smirk and let it open before running away, leaving Katsuki clenching his fists for dear life and trying not to explode whatever was in front of him.
Until one day, he just opened the door, stared straight into Katsuki’s face (who was already fuming and glaring at him like his life depended on that), turned on his heels and stalked away without saying a single word.
And leaving the door fucking wide open.
Katsuki was on his feet before he could really think about it, practically running to catch that fucker. He grabbed the back of his shirt and turned him so they were face to face, shaking him by the collar.
“What the fuck is your fucking problem?!” he screamed into Icyhot’s face, which was just as unimpressed as always.
“I don’t think I have a problem.”
“You will have, if you don’t stop coming to my fucking room and leaving my fucking door open!”
“Oh, sorry about it. It’s just that, irritating you is pretty funny.”
Katsuki reached a completely unknown level of anger, where his mind went just blank and he couldn’t seem to process what Half n’ Half had just said. Godamnit, not even Deku managed to make him this mad before. Icyhot took advantage of his paralyzed state and quickly untangled his shirt from Katsuki’s grasp.
He took a couple steps back before Katsuki snapped out of his inertness and started shaking with repressed anger. Icyhot had the decency to look concerned as Katsuki stepped closer to him before small explosions popped on his hands.
“ I’LL FUCKING KILL YOU! ”
He lunged against the other boy, who started running towards the stairs. He could barely feel the floor beneath his feet as he chased after him, only seeing the flash of his fucking red and white hair.
They reached the common room, Icyhot still running for his life and Katsuki still screaming bloody murder. The others were already used to Katsuki’s behavior, but seeing Todoroki run away from him was kinda odd. Still, no one had the courage to interrupt the chase to ask what was going on as the two boys runned through the room.
Eventually, they calmed down enough to just throw a couple of curses at each other (Katsuki with much more reluctance, needing Kirishima to put an arm on his shoulders to physically prevent him from exploding Todoroki).
After a bit more yelling and cursing, Katsuki flipped him off and stormed back to his room. Where his door was still hanging open. Controlling his breath, he slammed the door shut and threw himself at his bed, instantly dozing off. Because getting angry at bastards who didn’t seem to know what fucking
limits
were was tiring as fuck.