Doesn't Work Twice!

Winner of the Term 1d Fic Poll! The winning choice was 'BKDK Love Potion'   

-

Pushing up onto his tiptoes, Izuku 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. 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. He was already wasting so much time he could be spending getting ahead or, at least, catching up with everyone by doing chores around school. Course, it was his fault but that didn’t make it any easier to swallow. Dropping back down onto his soles, the box safely tucked into place, Izuku dragged an arm across his forehead. That was the last of the supplies he needed to gather up. 

Glancing out the window, Izuku 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 of sweet glycerin filled the small shed. Shoulders slumping, Izuku moaned softly in dismay. Now? Now of all times?! Sighing, Izuku turned, not one bit surprised to find Kacchan standing behind him, blocking his only exit. 

For the past few of days, Kacchan has been acting really weird. It wasn’t that noticeable at first – a big test was coming up so Izuku hadn’t really been focused on anything other than desperately trying to make sure he didn’t fail – but it quickly got to the point where it was impossible not to notice. Kacchan was his usual aggressive, blasty self but he was following Izuku around. He thought it was just a coincidence at first – after all, they existed within the same bubble so it wasn’t strange if Kacchan was in the cafeteria or at the mall at the same time he was. Then, Kacchan 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 Kacchan being right there. That in of itself was already a little weird – Kacchan rarely went to the library since he preferred studying in private and their workout times didn’t often coincide. It only got weirder when it seemed like Kacchan was taking (or making) an opportunity he could to be alone with Izuku. He never really did anything – only looked at Izuku with furious expectation, as though impatiently waiting for him do something. Each time, he couldn’t actually get what Kacchan wanted out of him and each time, Kacchan left in a thunderclap of inexplicable rage. The first time had been a little alarming but after the fourth, it was becoming more of an annoyance. No matter how many times he tried to get what Kacchan wanted out of him, he would never say. Just kept glaring at Izuku as though he was supposed to know what he wanted. 

Last time he checked, his quirk wasn’t mindreading. Other people were starting to notice his bizarre behavior as well but no one could get it out of Kacchan why he was acting that way. It was getting to a point where Izuku 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. While he always enjoyed being able to spend more time with Kacchan, doing it in this sort of way always made him feel uneasy. Besides, if he wasn’t going to be mature about this then Izuku wasn’t going to waste the energy trying to reason with him. Avoiding was just as good, though it seemed as though not even that was an option. 

Sighing again, not even bothering to hide how annoyed he was, Izuku said, “Hello Kacchan. Can you move please? It’s hot in here and I want to go take a shower.”

Kacchan 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, Izuku jumped a little when, suddenly, Kacchan started to stomp towards him. That…that was new. He usually always kept some distance between them. Resisting the urge to shrink back, bracing himself just in case Kacchan decided he wanted to do something violent, Izuku stared up at Kacchan, watching him silently as he walked over then stopped right in front of him. He was weirdly close – Izuku would barely have to raise his arm to touch him. Blinking rapidly in surprise, Izuku took a tiny step back. A different kind of heat flooded into his face. Close-! So close-! His scent was even stronger now. Izuku 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 Kacchan doing?! Did he think that getting this close would suddenly make it so Izuku could read minds?! 

“Kacchan, wha-“ Izuku started to ask, only to be cut off when Kacchan lunged forward, grabbed a handful of his shirt and wrenched him up into a rough kiss. Squeaking loudly, his eyes bulging out of their sockets, Izuku froze up. He stared at the blur of colors that was Kacchan’s face directly in front of his. K…Kiss…Kiss! Kiss! Kacchan was kissing him! Why was Kacchan kissing him?! Before his wildly sputtering mind had time to even begin registering what was happening, Kacchan pulled away with a harsh exhale. Mouth hanging open, eyes stretched wide, Izuku gawked up at him. Wha…wha..what was that?! Why did Kacchan just kiss him?! 

“Still not enough, huh?” Kacchan suddenly snarled, “You fucker, how much is it gonna take?!”

“Wha-“ Izuku squawked stupidly. He could still feel Kacchan’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, Izuku realized he was half-hard. If Kacchan were to glance down right then, he would see evidence of the stiffy that was stirring inside of his underwear. Flushing hotly, Izuku made to move away but before he could, Kacchan grabbed hold of his arm, spun him around and slammed him up against the nearby shelf. Yelping in surprise, wincing as the cold metal dug into his skin, Izuku tried once again to make his mouth work but any words that could’ve come out were lost to a shrill squeak when Kacchan wrenched down his shorts, 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…Kacchan could see his ass! What…what was going on here?! What was Kacchan doing?!

“Kac-!” Izuku started to cry out. A large, sweaty hand grabbed hold of one of his ass cheeks, spreading him open. Izuku 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 Kacchan pressed in close to his back. Incredible heat pressed to him, bleeding through his clothes to cover in him a thick layer of Kacchan’s scent and warmth. His head began to spin. His mouth was full of drool but his throat was bone dry. Kacchan…what was this? Why was he-?

“Stupid, shitty Deku.” Kacchan 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. Kacchan’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 Kacchan 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, Kacchan pushed one of his large fingers inside of him. A loud cry rippled out of Izuku’s gasping mouth. He thrust his hips back against Kacchan, grinding against his hand. Fuck-! Inside-! Kacchan’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. Kacchan pushed in deep, swirled his finger around then added a second. Izuku 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 Izuku’s hole, coaxing him to soften and stretch, Kacchan kissed, licked and nipped everywhere he could reach. 

“Kac…Kacchan-!” Izuku gasped. It felt so good! But what…what was this?!, “Wha…”

“Shut up.” Kacchan snarled without any real heat, “She said this is the only way left to make it work. So shut up and just let it take affect already, goddamnit!”

“Wha-“ His sputtering mind, fogged by pleasure and heat, couldn’t completely register what Kacchan 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, Kacchan 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. Kacchan stepped in close once more, one of his powerful hands clamping down on Izuku’s waist. Something hot and hard nudged its way between his cheeks, pressing insistently to his sloppy hole. Izuku’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 Kacchan’s cock inside of him! He’d spent years fantasizing what it’d feel like to have Kacchan 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, Izuku hungrily pushed back against Kacchan, moaning at the sensation of that fat head grinding against his twitching hole. 

Kacchan laughed, a low rasp that made Izuku’s heart throb. Leaning down, bringing his lips close to Izuku’s ear, he said softly, “There we go. About time, you piece of shit. This is what you want,” he pressed harder to Izuku’s hole, “isn’t it?”

Izuku nodded shakily, “Y-Yeah-!”

“Good,” Kacchan sweetly kissed his temple, “then I’ll give you as much as you want.”

Without warning, Kacchan slammed his hips forward, driving his cock into Izuku’s tight, virgin hole. Throwing his head back, tongue hanging out of his gaping mouth, Izuku 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 Kacchan’s pubic bone but the sensation of being stuffed so completely full with Kacchan’s large, thick cock was too much. He came, spraying thick ropes of white all over the shelves and boxes. Distantly, he could hear Kacchan laughing triumphantly. Clamping down even harder onto his hips, Kacchan held him firmly in place as he started to move, pounding into Izuku’s spasming hole. Clinging onto the shelf to keep himself upright, Izuku moaned and wailed, slamming his hips back against Kacchan to force his cock in even further. Good-! Good-! It felt so fucking good-! Kacchan’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-! Izuku could feel him in his stomach-! Even though he’d just cum, he already felt like he was going to again! 

“Fuck-!” Kacchan gasped into his ear, “Cumming! Gonna cum! Deku! Deku! Deku!”

“Me too!” Izuku panted, “Kacchan! Me…me too-!”

“Together!” One of Kacchan’s large hands slipped down to wrap firmly around his sloppy cock, pulling a strangled wail out of Izuku, “You better cum with me, you shitty nerd! I’ll kill you if you don’t!”

Laughing dizzily, Izuku clumsily turned his head to press a kiss to the corner of Kacchan’s mouth, “C…can’t you be a little nicer when…when we’re doing this-?”

Kacchan was silent for a moment then a powerful hand grabbed hold of Izuku’s jaw. Wrenching his head further back, Kacchan firmly pressed their lips together in a deep, thorough kiss. Izuku 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, Kacchan pressed their foreheads together, intently peering into his eyes. He gave Izuku’s cock a hard pump, smearing his thumb against the precum soaked slit. Izuku gasped wetly, thrusting his hips forward to drive his cock through the tight ring of Kacchan’s fingers. 

“Cum.” Kacchan ordered in a low rasp, “Cum for me…Izuku.”

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, Izuku came a second time. Clenching his teeth together, Kacchan slammed forward, completely sheathing his cock inside of Izuku’s ass. His length swelled up even bigger than a flood of warmth was pouring into him. Kacchan crushed their lips together, swallowing the loud wail that erupted out of Izuku’s throat. Inside…Kacchan 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, Izuku 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 Kacchan had even finished cumming, he spun Izuku 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 broad shoulders, Izuku pulled Kacchan 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. Kacchan…he wanted more of Kacchan! He wanted to stay right here with Kacchan forever! 

-

Blinking blearily, Izuku 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. There wasn’t an All Might to be seen so definitely not his. 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, Izuku looked around. It was a little too dark to see clearly but the smell was unmistakable. Glycerin…he was in Kacchan’s dorm. Suddenly, the memory of what had happened in the shed came flooding back. Flushing hotly, Izuku 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? How embarrassing! Sighing softly, Izuku 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. Kacchan…had he given him a bath? Pulling back the covers, Izuku peered at the pair of boxers he was wearing. Yep, those were different from the ones he put on this morning. Kacchan had bathed him. Despite what they had just done, the thought was a little embarrassing. 

Where was Kacchan, though? Izuku 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, Izuku carefully shimmed over to the side, meaning to look around to see if Kacchan 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?” Kacchan 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?!” Kacchan 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 stupid potion 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? Are you trying to piss me off? You saying your quirk is a piece of worthless shit?”

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 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 Kacchan’s dorm opened. A startled, wide eyed Kacchan walked in, holding a plastic bag from the local convenience store. Their eyes met. Kacchan stopped dead, an adorable flush of pink appearing in his cheeks. Raising an eyebrow, finally having figured out what Kacchan had meant by ‘taking affect’, Izuku asked, “A love potion? Seriously?”

Looking away, flushing an even brighter shade of red, his bottom lip thrust out in a stupidly cute pout, Kacchan slammed the door closed behind him. Stomping into the room, he dropped the bag down onto his desk, purposefully keeping his back to Izuku as he pulled out the food he’d gotten, “Shut up. I was desperate.”

“She’s right.” Izuku laughed, pulling his knees close to his chest, enjoying being able to see this side of Kacchan, “You are an idiot.”

“Hah?!” Kacchan spun around, his face now bright red, “Who you calling an idiot?”

“You.” Izuku smiled, “You’re an idiot…but I guess,” he held out a hand to Kacchan, who, despite his pout and weak fury, immediately walked over to take into his own, “you’re my idiot now.”