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Pushing up onto his tiptoes, Katsuki carefully set the box full of baseballs onto the top shelf. The equipment shed was sweltering. Sweat rolled in fat droplets down his forehead and neck, causing his hair to cling uncomfortably to him. And although he loved his quirk, that didn't mean he liked being a sweaty teenager. He’d tried getting the only window open but the damn thing was stuck – wouldn’t budge an inch. While he could easily force it open, he didn’t want to risk breaking it.
Last thing he needed was to get into even more trouble and lost time. He was already wasting so much time he could be spendingtraining for their U.A. exam at least. But he had catching up with everyone by doing chores around school. Course, it was his fault because he was so focused on his goal that he forgot he had pending duties but that didn’t make it any easier to swallow. Dropping back down onto his soles, the box safely tucked into place, Katsuki dragged an arm across his forehead. That was the last of the supplies he needed to gather up.
Glancing out the window, Katsuki was relieved to see there was still a good amount of daylight left. He checked his watch. Five hours until curfew as well – more than enough time to get some training and studying in! He was just about to leave when there came the sound of the door opening and closing behind him. A familiar scent filled the small shed. A scent that had become very constant in his life. Shoulders slumping, Katsuki moaned softly in dismay. Now? Now of all times?! Sighing, Katsuki turned, not one bit surprised to find Deku standing behind him, blocking his only exit.
For the past few of weeks Deku has been acting really weird. It wasn’t that noticeable at first – of course, although Katsuki had been clear about his relationship after the incident with the Sludge Villain. – but it quickly got to the point where it was impossible not to notice. Deku was his usual quiet and withdrawn self but he was following Katsuki around.
He thought it was just a coincidence at first – after all, they existed within the same bubble so it wasn’t strange if KDeku was in the cafeteria or at the store at the same time he was. Then, Deku started showing up in the library at the same time as him, then the weight room, and the gym and outside when he was relaxing out on the grass, just flipping through his notes.
It got to a point where he couldn’t go anywhere without Deku being right there. That in of itself was already a little weird – Although he no longer hung out with those extras, Deku hadn't followed him since they were children. . It only got weirder when it seemed like Deku was taking (or making) an opportunity he could to be alone with Katsuki. He never really did anything – only looked at Katsuki while smelling a strange new smell, as though impatiently waiting for him do something.
Each time, he couldn’t actually get what Deku wanted out of him and each time, Deku's gaze darkened and he withdrew. The first time had been a little surprise but after the fourth, it was becoming more of an annoyance. No matter how many times he tried to get what Deku wanted out of him, he would never say. Just kept glaring at Katsuki as though he was supposed to know what he wanted.
Last time he checked, Deku was still Quirkless, and now he thought he was a telepath?. Other people were starting to notice his bizarre behavior as well but no one could get it out of Deku why he was acting that way. It was getting to a point where Katsuki was seriously beginning to consider avoiding him as best he could. Being trapped in a space with him glaring at him like that wasn’t good for his nerves. Avoiding was good, though it seemed as though not even that was an option.
Sighing again, not even bothering to hide how annoyed he was, Katsuki said, “Deku. Can you move please? It’s hot in here and I want to go take a shower.”
Deku glowered at him silently for a few moments. Hands hanging uselessly by his sides, resisting the urge to just go over and push him out of the way, Katsuki jumped a little when, suddenly, Deku started to stomp towards him. That…that was new. He usually always kept some distance between them.
Resisting the urge to use his quirk in such a small space just in case Deku decided he wanted to do something violent, Katsuki stared up at Deku, watching him silently as he walked over then stopped right in front of him. He was weirdly close – Katsuki would barely have to raise his arm to touch him.
Blinking rapidly in surprise, Katsuki took a tiny step back. A different kind of heat flooded into his face. Close-! So close-! His scent was even stronger now. Katsuki had to fight hard to not suck in a deep breath to drag his heavenly scent into him. Okay, now, this had taken a very strange turn. What in the world was Deku doing?! What on earth was that scent?! Did he think that getting this close would suddenly make it so Katsuki could read minds?!
“Deku, wha-“ Katsuki started to ask, only to be cut off when Deku lunged forward, grabbed a handful of his shirt and wrenched him down into a rough kiss. Squeaking loudly, his eyes bulging out of their sockets, Katsuki froze up. He stared at the blur of colors that was Deku’s face directly in front of his.
Kiss! Kiss! Deku was kissing him! Why was Deku kissing him?! Before his wildly sputtering mind had time to even begin registering what was happening, Deku pulled away with a harsh exhale. Mouth hanging open, eyes stretched wide, Katsuki gawked up at him. Wha…wha..what was that?! Why did Deku just kiss him?!
“Still not enough, huh?” Deku suddenly snarled, “How much is it gonna take?!”
“Wha-“ Katsuki squawked stupidly. He could still feel Deku’s lips on his own. The kiss had been so rough, so sudden but it left a vibrant heat burning in the pit of his stomach. With a hard jolt, Katsuki realized he was half-hard. If Deku were to glance down right then, he would see evidence of the stiffy that was stirring inside of his underwear.
Flushing hotly, Katsuki made to move away but before he could, Deku grabbed hold of his arm, spun him around and slammed him up against the nearby shelf. When did Deku become so strong?! Yelping in surprise, wincing as the cold metal dug into his skin, Katsuki tried once again to make his mouth work but any words that could’ve come out were lost to a shrill squeak when Deku wrenched down his pants and underwear, exposing his ass.
If his jaw went any lower, it was going to unhinge. His heart came to a dramatic stop in his chest before jumpstarting to an erratic, bone busting rhythm. Intense heat pooled into the base of his belly. He went from half-hard to a raging boner in the blink of an eye. His ass…Deku could see his ass! What…what was going on here?! What was Deku doing?!
“Kac-!” Katsuki started to cry out. A hand grabbed hold of one of his ass cheeks, spreading him open. I hadn't noticed that Deku's hands felt so rough. Katsuki jolted, an electric shiver racing up his spine. His cock twitched excitedly. Precum dribbled down the trembling length.
Hot, heavy panting filled up his ears as Deku pressed in close to his back. Incredible heat pressed to him, bleeding through his clothes to cover in him a thick layer of Deku’s scent and warmth. His head began to spin. His mouth was full of drool but his throat was bone dry. Deku…what was this? Why was he-?
“Oh my Kacchan.” Deku murmured huskily into his ear, giving the lobe a hard nip. “It’s been days and it still hasn’t taken affect?”
“What are you-?” Another hard shiver wracked his body. Deku’s calloused fingers slipped between his ass cheeks to press firmly to his hole. Sometime between him being distracted by how good it felt to have Deku this close and now, he had coated his fingers with some kind of thick, cold substance. The realization of what they were actually doing dawned on him with a sharp, hard pop.
At the same time, Deku pushed one of his thick fingers inside of him. A loud cry rippled out of Katsuki’s gasping mouth. He thrust his hips back against Deku, grinding against his hand. Fuck-! Inside-! Deku’s finger was inside him! It was just his finger but it already felt so good! The calloused pad rubbed against the interior walls of his ass. There was the briefest moment of discomfort as his ass adjusted but it faded so quickly, he barely remembered it was there once it was gone.
Deku pushed in deep, swirled his finger around then added a second. Katsuki moaned wetly as his ass was stretched open even further. There was no discomfort this time – his ass greedily sucked the second digit in. Same with the third – it slipped in with no problem. Thrusting his fingers in and out of Katsuki’s hole, coaxing him to soften and stretch, Deku kissed, licked and nipped everywhere he could reach.
“Kac…Deku-!” Katsuki gasped. It felt so good! But what…what was this?!, “Wha…”
“Just relax.” Deku said, “She said this is the only way left to make it work. So shut up and just let it take affect already, please!”
“Wha-“ His sputtering mind, fogged by pleasure and heat, couldn’t completely register what Deku was saying. She? Only way to make it work? Take affect? What was going on here?! Before he had time to really think about it, Deku slipped his sopping wet fingers out of his hole. He wasn’t given time to express his disappointment.
There came the sound of a zipper being undone and fabric being shoved out of the way from behind him. Deku stepped in close once more, one of his hands clamping down on Katsuki’s waist. Something hot and hard nudged its way between his cheeks, pressing insistently to his sloppy hole. Katsuki’s eyes widened. His heart did a dramatic leap up into his throat.
That…that was-! There was no mistaking what that was! Suddenly, why all this was happening didn’t matter. That…he wanted that…he wanted that inside of him! He wanted Deku’s cock inside of him! He’d spent years fantasizing what it’d feel like to have Deku fuck him with his big, strong cock! He…he didn’t care about the logistics! He just wanted that big thing in him!
Panting heavily, his mouth hanging open, a thin line of drool dribbling out of the corner of his lips, Katsuki hungrily pushed back against Deku, moaning at the sensation of that fat head grinding against his twitching hole.
Deku laughed, a sound that made Katsuki’s heart throb. Leaning down, bringing his lips close to Katsuki’s ear, he said softly, “There we go. About time, my Kacchan. This is what you want,” he pressed harder to Katsuki’s hole, “isn’t it?”
Katsuki nodded shakily, “Y-Yeah-!”
“Good,” Deku sweetly kissed his temple, “then I’ll give you as much as you want.”
Without warning, Deku slammed his hips forward, driving his cock into Katsuki’s tight, virgin hole. Throwing his head back, tongue hanging out of his gaping mouth, Katsuki wailed loudly. Every muscle in his body tightened up. A violent, powerful shudder raced through his body. Hot on its heel was a wave of intense, overwhelming pleasure.
He managed to last right up until the point that his ass was pressed flush to Deku’s pubic bone but the sensation of being stuffed so completely full with Deku’s large, thick cock was too much. He came, spraying thick ropes of white all over the shelves and boxes. Distantly, he could hear Deku laughing triumphantly.
Clamping down even harder onto his hips, Deku held him firmly in place as he started to move, pounding into Katsuki’s spasming hole. Clinging onto the shelf to keep himself upright, Katsuki moaned and wailed, slamming his hips back against Deku to force his cock in even further.
Good-! Good-! It felt so fucking good-! Deku’s hot, throbbing cock scraped across his insides, creating friction that sent wave after wave of mind-numbing pleasure crashing through him. He was pushing in so deep-! Katsuki could feel him in his stomach-! Even though he’d just cum, he already felt like he was going to again!
“Fuck-!” Deku gasped into his ear, “Cumming! Gonna cum! Deku! Deku! Deku!”
“Me too!” Katsuki panted, “Deku! Me…me too-!”
“Together!” One of Deku’s hands slipped down to wrap firmly around his sloppy cock, pulling a strangled wail out of Katsuki, “You better cum with me, my Kacchan! Like two soulmates!”
Laughing dizzily, Katsuki clumsily turned his head to press a kiss to the corner of Deku’s mouth, “H...How can you say such sweet words when you fuck me so roughly?”
Deku was silent for a moment then a powerful hand grabbed hold of Katsuki’s jaw. Wrenching his head further back, Deku firmly pressed their lips together in a deep, thorough kiss. Katsuki moaned happily, melting back into his touch, hardly able to notice the squeak of pain in the back of his neck. The kiss didn’t last nearly long enough.
Pulling away with a sharp breath, Deku pressed their foreheads together, intently peering into his eyes. He gave Katsuki’s cock a hard pump, smearing his thumb against the precum soaked slit. Katsuki gasped wetly, thrusting his hips forward to drive his cock through the tight ring of Deku’s fingers.
“Cum.” Deku ordered in a low rasp, “Cum for me…Katsuki.”
Hah…there was no telling him no when he spoke to him like that. Trembling violently, his toes curling in his shoes, white spreading across his vision, Katsuki came a second time.
Clenching his teeth together, Deku slammed forward, completely sheathing his cock inside of Katsuki’s ass. His length swelled up even bigger than a flood of warmth was pouring into him. Deku crushed their lips together, swallowing the loud wail that erupted out of Katsuki’s throat.
Inside…Deku came inside-! His cum was inside him-! Good, good, it felt so good-! He couldn’t-! He couldn’t-! Back arching, his legs barely able to hold up his weight, Katsuki came again. His balls ached. His penis was burning. He wasn’t sure if anything came out that time but it wasn’t something he was too concerned about.
Before Deku had even finished cumming, he spun Katsuki around, slipped his hands underneath his knees and lifted him up. Pinning him to the shelf, he got to moving again, slamming his cock into his sloppy hole. Clinging to his shoulders, Katsuki pulled Deku down into a clumsy, eager kiss.
He curled his legs around his waist, using all the core in his middle to keep himself upright. None…none of this was making any kind of sense but he couldn’t bring himself to care. Deku…he wanted more of Deku! He wanted to stay right here with Deku forever!
Blinking blearily, Katsuki slowly opened his eyes to find himself in a dimly lit room. Took him all of three seconds to register that it wasn’t his. Of course he had All Might merchandise, but it wasn't his own. Who’s then? Cautiously raising his head, wincing at the hot throb of pain that immediately began to pulse in the center of his forehead, Katsuki looked around. It was a little too dark to see clearly but the smell was unmistakable.
The smell…he was in Deku’s dorm. Suddenly, the memory of what had happened in the shed came flooding back. Flushing hotly, Katsuki went to sit up but a wave of dizziness washed over him, driving him back down onto the bed. That’s right…they went at it for so long that he’d gotten overheated. Did he pass out, he next number one hero? How embarrassing!
Sighing softly, Katsuki pushed a hand through his hair. It was slightly damp but he didn’t feel sticky. In fact, his whole body felt a little bit wet but refreshingly clean. Deku…had he given him a bath? Pulling back the covers, Katsuki peered at the pair of boxers he was wearing. Yep, those were different from the ones he put on this morning. Deku had bathed him. Despite what they had just done, the thought was a little embarrassing.
Where was Deku, though? Katsuki glanced around the room again, as though a second lookover would reveal that familiar shape. Unsurprisingly, he saw the same layout as he had before. Frowning, Katsuki carefully shimmed over to the side, meaning to look around to see if Deku left his phone anywhere nearby. Before he could, there came two voices from the other side of the closed door. One was familiar, the other wasn’t.
“Whaddya mean?” Deku asked someone irritably, “You said that this was a way to jumpstart it!”
“Yeah.” A female voice, high pitched and lazily, replied, “I was lying.”
“What?!” Deku snapped loudly, “Why would-“
“Because you wouldn’t stop bugging me.” He could practically hear the dismissive shrug in the girl’s voice. “And you’re too stupid to realize what’s going on so I figured this would be a good way to make you stop being an idiot.”
“Your spotion didn’t work. I was trying to figure out why.”
“Of course it didn’t work.” An eye roll this time – a powerful one too.
“What? What do you mean by "it's not working? Your quirk was supposed to be the most effective according to Sensei”
He didn’t hear it but he got the impression that the girl sighed in annoyance before saying, “How have you not realized it by now?”
“Hah? Realized what?”
“Idiot. The potion won’t work well if the person is already in love with you!”
Silence then the sound of heels clacking against the floor as he assumed the girl walked off. A couple seconds later, the door to Deku’s dorm opened. A startled, wide eyed Deku walked in, holding a plastic bag from the local convenience store. Their eyes met. Deku stopped dead, an adorable flush of pink appearing in his cheeks. Raising an eyebrow, finally having figured out what Deku had meant by ‘taking affect’, Katsuki asked, “A love potion? Seriously?”
Looking away, flushing an even brighter shade of red, his bottom lip thrust out in a stupidly cute pout, Deku slammed the door closed behind him. Stomping into the room, he dropped the bag down onto his desk, purposefully keeping his back to Katsuki as he pulled out the food he’d gotten, “I was desperate.”
“She’s right.” Katsuki laughed, pulling his knees close to his chest, enjoying being able to see this side of Deku, “You are an idiot.”
“Hah?!” Deku spun around, his face now bright red, “Who you calling an idiot?”
“You.” Katsuki smiled, “You’re an idiot…but I guess,” he held out a hand to Deku, who, despite his pout and weak fury, immediately walked over to take into his own, “you’re my idiot now.”