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Let it be known that Hitoshi and Katsuki do not like each other.
They can't work together during training without one of them initiating an argument of some sort (mostly Katsuki, in this case). The two were already on rocky roads to begin with during their first year when class 1-B challenged them, and it got so much worse when Hitoshi joined Katsuki's class for their second year.
Aizawa reprimanded both boys, telling them they need to find a common ground or he'll find a way. Hitoshi told his mentor he would try so long as Katsuki would be willing to cooperate. He just got into this class and he won't let some bratty blond asshole ruin that for him.
Even with the edges of a threat sitting in the air, Katsuki still couldn't keep his fucking mouth shut. He always had something to say. Hitoshi could only roll his eyes so many times before it started to grate on his nerves to the point he was tempted to punch him square in his smug ass face.
But again, that would damage his reputation and make him look like the bad guy. Despite his shitty behavior, Katsuki has most of the class’ approval and has a good standing with his so-called “Bakusquad”. Hitoshi needs to earn his place.
It all comes to a halt during a spar one day. Originally he was invited by Denki and Eijirou to battle it out. Hitoshi likes Denki, and is sure he has only the best in mind when it comes to pairing up with certain people (though he'd rather eat glass than go against Katsuki). Reluctantly, he agreed.
Denki messaged after he got there that he completely forgot about some homework that was assigned and told him to fight it out with Eijirou and Katsuki instead.
But oh, of course, Eijirou called last second too and said he wasn't available anymore either. So it was just him and Katsuki.
“Lemme kick your ass so I don't feel like I wasted my fucking time.” Katsuki told him, and then they were off.
Katsuki mouths like he usually does, snapping Hitoshi with one of his explosions and evading his capture weapon. He'll give the blond credit that he's fast and agile, knowing what moves to make and the like.
He just can't stop talking.
This started off as a no quirks session, too. Hitoshi should've known he wouldn't abide by that rule for long.
Katsuki likes to taunt, calling Hitoshi degrading names to get a rise out of him, whereas Hitoshi stays silent, focusing more on his actions while fighting instead of babbling nonsense like Katsuki does.
But hearing this constant badgering is bringing Hitoshi closer and closer to a line he really doesn't want to cross.
He tries to let it slide off his back, as Aizawa has told him to do. “Bakugou just wants a reaction. If you don't give him that, he'll eventually leave you alone.” Tell that to the months of cruel insults he's had to deal with.
He ducks under another of Katsuki's attacks. “Stay still, loser!” He yells. A smile covers his lips. What Hitoshi would give to slap it off. “Fucking hit me! Stop being a goddamn pussy!”
That's it. He's done messing around.
“Do you ever know when to stop?” A tingle runs in the back of his head, preparing.
Katsuki tsks, landing on his feet and bending down as if ready to strike again after he gets his reply out. “Do you ever know when t–”
He stops talking. Hitoshi raises a brow, the ghost of a smirk forming on his lips. He says a short, “Know when to what, Bakugou?”
“...” Katsuki straightens up. His arms fall to his sides. Hitoshi watches his tongue relax and jaw slacken.
The aircon system activates. The crickets chirp from outside. The sound of their heavy breathing is loud.
But Katsuki is quiet.
Seeing Katsuki in a docile, obedient state like he is makes a heat form in his stomach. He despises Katsuki Bakugou, thinks he's nothing but a douchebag, but with how he is at this moment in time, at Hitoshi's beck and call without having control over it? The thought is arousing.
Plus, it's about time someone busy that filthy mouth of Katsuki's. Hitoshi can think of a couple uses for those plump lips and lashing tongue.
Hitoshi moves forward while Katsuki stays, motionless. He couldn't even if he wanted to. It makes what is about to be done so much easier.
He grips Katsuki's jaw when he gets close. Katsuki doesn't react. He can't. Hitoshi sneers. He is aware the people he puts under hypnosis remember everything, like they're behind a mental wall they can't break. That's exactly what Hitoshi is appreciative for in this instance. Katsuki is unable to fight back. He has to listen to every word Hitoshi says, no matter what.
Gods, what a feeling.
“Get on your knees.” His eyes glow, forcing the action to happen faster. Katsuki drops, his knees cracking with the sudden fall. Hitoshi clicks his tongue. The blond has dealt with his fair share of injuries. A couple bruised kneecaps will be fine.
It won't be the only thing bruised by the time Hitoshi is done with him.
His finger hooks the inside of Katsuki's mouth. He pushes down, making him open it and show off his teeth and lax tongue. With his other hand, he pulls at his belt buckle and unlatches it so he can have access to his button and zipper. He's done this one-handed before, he can do it again.
He fishes his half erect cock out, stroking it a couple times. Katsuki remains still. Drool starts to puddle around Hitoshi's finger, running down Katsuki's chin. He takes it out, wiping the saliva on the hem of his shirt and replacing it with the tip of his dick.
It isn't past the barrier of his lips yet and Hitoshi is already loving it. He looks down at Katsuki. “Go on. Suck it.”
He does. His jaw opens more and the head moves inside. A tongue joins the mix, licking at his slit and hollowing his cheeks. Based on the events taking place, Katsuki must've done this before, because it feels so fucking good.
There is an underlying hesitation, as if his body is attempting to fight the order but it's quickly eradicated when Hitoshi shoves another inch in. Katsuki gags, a natural instinct when something goes close to the back of the throat. No matter. He can get around that no problem.
“That's it. You take what I give you.” Hitoshi grunts. “Use that mouth of yours to suck my cock.”
Katsuki lazily suckles on the three, going on four inches he's given, hands still by his sides. The explosions are long gone and any retaliation stays under the mental lock.
It's so warm. Hitoshi throws his head back, but not before he grabs a handful of blond spiky strands and tugs him forward. The movement sends another three in. His throat constricts around the intrusion.
Hitoshi can't have Katsuki getting sick or passing out on him. He wants him to see all of this. He wants him to remember his true place after today – on his knees, with Hitoshi looking down on him.
“Relax.” He demands. Every bit of Katsuki goes pliant and that's when he shoves the last remaining inch past the barrier, making sure his pubes are pushed against Katsuki's nose.
His cheeks turn a bright red from lack of air, but Hitoshi doesn't see it when he closes his own to embrace the tightness surrounding his cock. Even if he did, it wouldn't phase him. He'd keep him there regardless. Katsuki automatically breathes through his nose to take in air. He doesn't have much choice otherwise.
With a shaky exhale, Hitoshi pulls back after a couple seconds, not giving Katsuki any time to adjust. He opens his eyes to look at Katsuki. The blond is a mess, drool and tears and sweat all over his face. His lips tremble, taking in oxygen like a man starved.
Hitoshi hums. Spit drips down Katsuki's chin and towards his neck. He looks like a whore.
Inhaling, he puts both his hands in Katsuki's hair, gripping at the roots for a good hold. His tip lines up with pink, swollen lips.
“Let's see what your throat can take, hm?”
Then he pushes all the way back in.
Katsuki constricts around him again but his throat doesn't have the time to acclimate as Hitoshi starts a rhythm of moving in and out. He manually moves Katsuki's head, getting him to take all of his cock every single time. Katsuki gags, unable to stop himself as Hitoshi begins to fuck his throat earnestly.
It's wet and hot and so fucking tight, much like his toys he keeps stashed away from prying eyes. He uses them on rare occasions, but after this, he may need to upgrade or start using better lube. Katsuki's saliva and tongue feel amazing surrounding him, making the glide of his cock better and he wants that similar feeling from now on.
“I should've done this a long time ago.” He pants, thrusting his hips in tandem with the forceful head motions. His balls slap Katsuki's chin, making drool splatter everywhere. “You’re just a sleeve. A little fuckhole for me to mess up.” He growls, “The next time you bitch or moan at me, your mouth won't be the only thing I'll use.” Not a threat. A promise.
There's no answer. Just gagging and the subtle strained noises he knows are his body reacting to the sudden penetration. Hitoshi hopes he bruises his vocal chords enough so he can't gripe or say a word. He's sure everybody would be happy to have a blissfully quiet week or so depending on how long it would take to heal.
Tears race down pale cheeks but Katsuki's eyes remain unfocused. Hitoshi wants to keep the hypnosis active until he releases both the quirk and his cum down Katsuki's throat.
He's not too far from doing both. The tightening of his abdomen gives him a warning.
“You’re going to take my cum, Bakugou.” He states. “And you will swallow it.” He moves faster, harder, driving the command home. Katsuki chokes, eyes rolling back because of the lack of air.
When he spills in the back of Katsuki's throat, he immediately swallows around Hitoshi, taking every drop he has. He thinks he pulled a few hairs out on accident, but it's fine. They'll grow back.
He tugs out of Katsuki's throat, getting caught on his teeth for a moment before he comes out with a pop. Katsuki falls back, gasping and coughing.
That's when he releases the quirk.
Katsuki grabs his throat, dry heaving on the floor. Hitoshi tucks his flaccid dick back in his pants and turns to grab his water bottle and hand towel off the bench nearby. He doesn't deserve a last word.
He glances at the blond one last time before he leaves, seeing him crawling on the floor and silently sobbing. Scoffing at the weak behavior, Hitoshi turns, pushing the door open and heading back to his dorm room.
Katsuki should know better to say anything to him again. And if he does, well… then he'll just have to find another way to shut him up.