Big Bang

Five times Aizawa walks in on Deku and All Might and One time they walk in on him.

“He is going to die, sooner rather than later, and the thought leaves him with a bitter aftertaste -or maybe it’s just the blood in his mouth.”

Toshinori wonders if he should try to stay away from Izuku, for both their sake. The answer is obvious : he can’t. He can’t, and he will never be able to say no to this boy. Even though he shouldn’t.

Izuku Midoriya has been obsessed with quirks ever since his own failed to manifest. He doesn’t care whether people use them for good or evil, just what their quirks can do. He keeps notes on all the heroes and villains he admires, but his favorite is the man with the most powerful quirk in the world — the number one villain, All Might.

AU in which All Might isn’t a hero, but Midoriya is still his biggest fan.

Tags: Au, NSFW

Warning: NSFW

Write by: stressedoutandying

As a fanboy, Izuku wasn’t innocent to the errant side of fandom. From impersonators with ill intent to fans lacking in empathy, thinking they were safe behind a computer screen as they caused grievances, heroes had to deal with the lot by evoking their personal rights or setting examples.

It was dirty work, especially for those gleaming stars that liked to imagine they didn’t carry along such unsavory figures in their fan base. And of course there were those that sought to meet their idols in person. Izuku had been beyond lucky in that front. Going from a boy watching videos and begging for any merch he laid eyes on, to a teen browsing forums and keeping secrets, now a young man content in the fact that he had his idol’s number in his phone, yet still blushing any time he saw mention of his name next to All Might’s. Fans like that, however, were the creative ones. Using their talents for mostly good and sometimes personal gain, they created art and music and literature honoring their heroes. Izuku would like to think he was something along those lines once, having kept all his notes and journals complete with facts and art like a character data book! But if a fan was invested enough, it was interesting to see what they could come up with.

Izuku remembered the moment relatively well. Browsing the forums as usual, he had come across a post and link he found titled so boldly that he couldn’t help but click. After only seconds of reading, Izuku felt the shame of his actions burn across his cheeks. The post pitched its product well as a hand made craft, small batches for pre-orders, and mathematically sound with photos for research. Izuku’s curiosity got the better of him after racking his own brain for personal opinion. He pulled out his journals and studied his own works, his own art and reference. There really wasn’t a reason for the post to be very far off in its claims. The only question now was what did he do with this new found knowledge, and the link to buy right in front of him? He was a collector after all... Pulling out his wallet, Izuku’s stomach had fluttered with nervousness, like Toshinori would suddenly call him or Inko would walk in. But he input a few digits, filled out a form, and after the transfer of money, Izuku leaned far back in his chair with a nervous sigh and burning ears. Two weeks later, he received a package. Inko hadn’t been home and wouldn’t be until the late afternoon, so after a quick run to the drugstore, Izuku could revel in his purchase. That had been almost a year ago, after Izuku had graduated from U.A. A number of things had occurred since then. Graduation had meant a bittersweet parting from the class and school he loved, but it was a start at the new world he had always waited for. Coming out a fully fledged Pro Hero wasn’t exactly instant, though. His internship with Gran Torino may have been necessary, but it had robbed Izuku of an early chance to gain experience at an agency. He would soon learn, however, that Toshinori really had no problem undertaking Izuku himself. A growing Pro Hero To Be needed more space than a childhood bedroom, Toshinori reasoned.

He had room to spare in the serviced apartment right there in Roppongi. It just meant moving a few boxes and, of course, convincing Inko. It took time to convince her, though, and in that time, Toshinori invited Izuku along to many of his daily outings. The last warm days of autumn were spent beachside, talking about plans until the sea shone orange with the setting sun. Toshinori would take Izuku for dinner and drive him home, only to show up at the Midoriya apartment the next day, bashfully asking Inko if Izuku would come outside for an early morning jog.

They shared their first kiss at Takoba Park. Inko must have known, watching Izuku come home less and less until there was really no point to even keeping his dinner in the fridge. She relented, but not until she had a long chat with Toshinori behind closed doors that seemed to leave the Pro Hero strangely humbled.

Izuku packed his entire room into five boxes: clothing, books, miscellaneous, storage, and fragile storage. Posters were taken down, rolled up, and tucked away. Bedsheets were stripped, washed, and folded within the storage box to cradle expensive in-box collectors items. Journals were stacked alongside textbooks and biographies. It was almost sad. Toshinori joined in halfway through, insisting Inko allow him to help clean the rest of the house, lugging the storage boxes to a hall closet, and generally trying to make himself useful until Izuku had packed the last of what would be taken to the new apartment.

That’s when Izuku found it again. With little left to pack, Izuku had thought to empty any remaining desk drawers into the box marked as books.

This meant old school notes he would likely discard later, a few pens and pencils in an All Might themed pouch, a couple notebooks he used to track his progress at the gym, and tucked away at the back of his bedside table drawer, a fan-made model kept in its original packaging.

He hadn’t really thought about it recently, and now the pressing question was what to do with it. Part of him wanted to pitch it in the garbage, but that could very well lead to Inko finding out about it...and honestly, Izuku didn’t know if he wanted to part with it that permanently. He could put it in storage! ...Except that Toshinori had already packed those boxes high away in the hall closet, taped shut and out of reach. Not exactly something that could be stealthily snuck into. With no real other option, Izuku buried it under a few hoodies and workout shirts, assuming he would find a space to hide it at his new abode. Out of sight and mind,

Izuku taped up the box. Toshinori assisted in getting his belongings down to the car, occasionally passing an easy smile when he caught Izuku looking for too long. Packing didn’t mean the end of it, though. Inko insisted they stay for dinner. As wonderful as it was, the heaviness of the situation wasn’t easily shaken. Moving out was scary. Moving in - with All Might, especially - was foreign to Izuku, and he could sense that maybe Toshinori was mentally fidgeting with the idea, too. How often did he even get company? The school break was nearly over, which brought up light conversation between Inko and All Might. Izuku focused more on his katsudon than the talks of returning to teaching, and before he knew it, Toshinori was standing from the table to collect dishes against Inko’s approval. There was a minor scuffle over who did dishes. In the end, they all participated with the cleaning. It almost felt natural - like this was what had been missing. Izuku tried not to think too hard on it, resolving that dinner and dishes with his Mom would be a regular occurrence from now on. Parting from Inko with hugs,

Toshinori drove Izuku to Roppongi with only the sound of the radio between them. He promised a train ticket back any time. Anything, he said, to keep the tears from Izuku’s eyes. Izuku blamed the harsh traffic lights and All Might didn’t fight it. That had been a week ago, now.

Izuku sat on the corner of Toshinori’s wide bed, the ultrablue sheets bunched about him as he contemplated the afternoon sun streaming through wide windows. Although roomy and expensive, Izuku felt that the apartment was barely lived in. Toshinori kept no memorabilia of his All Might days, leaving the walls barren of any personal touches, and the sparkling hardwood floors reminded Izuku of a shrine. Any color used was bold and uniform: white curtains, blue sheets, black appliances, red couches, all accented with the same brown wood as the planks under his feet. It was almost medical. The whole week had been spent getting acquainted with the new living situation. Izuku learned little things about Toshinori in the meantime. His love of American movies was vast, with whole cabinets dedicated to DVDs. He ate in tiny amounts, and often, with at least half of those meals being some kind of smoothie. Izuku hadn’t thought to bring his own food, so they spent an afternoon shopping (which Toshinori seemed to enjoy, surprisingly) and watched movies through the evening. Toshinori was quite fluent in English, it turned out. Izuku had pestered him for Japanese subtitles, but found it much more charming to hear Toshinori point out the villains, recite their monologue, and explain plots without effort. Nights had been spent curled around each other, whispering in the dark as fingertips found arms and ribs and hips. Their relationship was only months old. Simple touches still sent thrills through the both of them, enough to leave Izuku wanting more under cover of dark. Occasionally, Toshinori obliged with equal hunger, but the former Pro Hero was much more inclined to take things slowly. Not that he was going to complain, Izuku thought, getting to his feet. He felt lucky enough to share this with All Might. The pace of joy didn’t matter. He was content. Open boxes dotted the floor since Izuku started unpacking around noon. He had tired of pulling out clothes as needed and finally decided to commit to the task while Toshinori attended meetings prior to student enrollment. It had meant the world to Izuku to have the quiet morning to ponder. He hadn’t noticed Toshinori adjust his dresser, but all the clothes had been shifted to one side. It made filling the empty space with his own clothing all the more heartfelt, though, like Izuku’s presence was filling a hole. His shoes were put in the entranceway, his coats in the hall closet. Deku’s hero suit and a number of replacements were put in a bedroom closet that Izuku had thought to be empty. until he noticed quite a few memorable hero suits of All Might’s near the back. He may have stayed in that closet a while, looking but not touching. He had begun folding track suits and gym clothes when a familiar box tumbled out onto the floor. He had honestly forgotten... Thumbing the cardboard box open, Izuku contemplated the validity of keeping it once again.

The hasty online purchase by a younger self, not yet knowing he would one day be in a relationship with Toshinori, didn’t seem right to own anymore. It had been a “fan made replica” of All Might’s cock, based off some wild theory and multiple reference photos. Most heroes had fans willing to make fantasy a silicone based reality for a price. Some heroes even encouraged such “art” (notoriously, Midnight) to a certain extent. It was the kind of thing marketed to the curious and adoring, and Izuku had fell for it. Tucked in alongside the admittedly close-to-real skin tone silicone was a inconspicuously sized bottle of lubricant Izuku remembers buying not too long ago. The bottle itself wouldn’t be bad to keep, but at least if Izuku threw out the ‘model’ here, he wouldn’t risk anyone finding it. Toshinori wasn’t nearly as curious as Inko; a bit of cardboard in the trash wouldn’t seem out of place once Izuku finished unpacking. Although...he was bound to be alone for at least another few hours. Izuku thought it over as he took the lubricant bottle in hand, casting a glance at the overlarge bed. Once more couldn’t hurt.

The air around him felt cool in comparison as Izuku sank slowly onto the toy. He was relaxing now, accustomed to the strain and stretch of his body. It was like training. The sense of mind to stay relaxed, go slow, and yet enjoy himself countered the throb of his thighs during each agonizingly slow upward draw or the ache in his knees every time he sat back on his heels. Izuku could make short work of himself like this. Fully prepared to unwind, throw out the toy, and take a shower after, Izuku let his mind drift to more attractive things. The long line of Toshinori’s thigh under Izuku’s cheek, the calloused palm of his hand brushing against Izuku’s stomach on its way down the front of his sleep pants, the warmth of his gaze in the middle of the night... Izuku’s face grew flush with exertion. He bit his lip against the breathy moans that threatened to escape. And then heard the bedroom door click. Toshinori stood in the doorway, mouth held agape as he took in the sight of Izuku in his bed. There wasn’t time to explain. Not that there was anything Izuku could say to justify himself. Toshinori looked just as shocked as Izuku was embarrassed. Desperate, Izuku grabbed a bit of the nearby sheet and attempted to blindly cover his lower half. Panting and painfully still, he couldn’t bring himself to look Toshinori in the eye. “H-How was work?” Toshinori couldn’t seem to respond. He was too preoccupied with the sight of Izuku’s thighs trembling and the way his blush extended down to his chest. Sweat and exertion has dampened his lively curls. “I didn’t think you’d be —“ “Must be embarrassing, having your idol walk in on you,” Toshinori presumed, loosening his tie. The suit jacket had been discarded elsewhere in the apartment. Without it, Toshinori started rolling the cuff of his dress shirt to the elbow. Izuku floundered for a reply.

“Look, I’ll just get a shower and we can pretend th - ahh!” A whine of discomfort escaped Izuku as he tried to free himself from the toy. Abandoning the sheet and any sense of privacy, Izuku turned to face the headboard. Gripping it, he could lift himself off the toy, get to the bathroom, throw this ridiculous thing away, and pretend this never happened... But then Izuku had a rather large hand on his hip, a strong chest pressed against his back, pressure pushing him slowly back down onto the toy. In his muscle form, All Might had no trouble maneuvering his successor. A chill swept up Izuku’s spine. The mattress dipped behind him with the weight of the former pro hero, hovering almost protectively over his successor. Mortified, Izuku melted into All Might’s touch. This struck a cord deep within him. Feeling All Might’s powerful aura over him was the basis of every wild fantasy he’d had.

Almost unconsciously, Izuku let All Might guide him into riding his toy again, eyes falling half-closed. He could hear the deep rumble of All Might’s voice quiet, distant, only coming through clear once Izuku caught the unfamiliar sound of nervousness in the pro hero’s voice. “Get off it.” Izuku was pulled from the haze of arousal as he carefully sat upright. Maybe Toshinori was having second thoughts. It was a sudden situation.

He was fully prepared to abandon this fantasy for the sake of Toshinori’s comfort, but then he spoke again, softly. “Would you like the real thing?” Clearly giving Izuku an option. He felt vulnerable, his back to All Might’s broad chest. But there was a small amount of space between them, room enough for Izuku to get out of All Might’s reach. Even the grip at his waist was light. Everything was an option for Izuku. He only had to nod and Izuku heard a faint zipper. All Might started to fumble with his tie when Izuku turned, knees digging into the mattress. His hands were surprisingly steadier as he assisted All Might in removing the tie, then unbuttoning the white dress shirt. It was left on his shoulders as Izuku moved on to the belt. Coming loose with a few tugs, Izuku discarded it off the side of the bed. All Might watched as Izuku led him to trade places. The silicone toy was lost somewhere in the topsheet when the young hero pushed it away to the foot of the bed, far more interested in All Might himself.

As Izuku’s muscular thighs straddled him, All Might felt a kind of pride. He was desirable to this young man. He couldn’t let him down.

All Might’s palm cradled Izuku’s cheek easily, which Izuku wasted no time kissing and nuzzling into, those big green eyes gazing up at his idol. It barely distracted from the fact that he was rocking his hips slowly, his plump ass brushing All Might’s still clothed but obviously interested bulge.

In Izuku’s mind, he is gauging how best to do this. No doubt the genuine article is more impressive than a model, but these things take time and preparation. The bottle of lube was just next to the pillows, but would it be enough? And Toshinori’s injuries were to be accounted for... After a minute, Izuku trusted he could gauge his own abilities. Toshinori would let him know if something wasn’t right. This just wasn’t a very romantic part. Taking up the bottle, Izuku avoided All Might’s gaze. He has to relax again, finger himself open again with more lube, and avoid how cold and impersonal this feels just so he can ride his boyfriend. But All Might wasn’t a passive partner, it seemed, because after a minute of watching Izuku reach and strain, All Might coated his own fingers in the slick liquid and reached for Izuku himself. All Might’s fingers filled him slowly while Izuku grabbed fistfuls of All Might’s shirt. Lips found Izuku’s throat easily, followed by nipping teeth that were sure to leave marks. He couldn’t care, though, not while he was nearly riding his idol’s hand. Every flex and stretch made Izuku impatient. He couldn’t bear waiting much longer. All Might’s left arm wrapped around Izuku, pulling him against his chest. The difference in angle made Izuku moan, fists falling from All Might’s shirt to tug at his waistband. He was eager, but he was ready. There was a bit of fumbling with clothes and positions as All Might released Izuku, letting him pull at the suit pants until they rested at the foot of the bed. He was back on his lap in seconds, All Might laughing softly when their noses bumped in Izuku’s hurry for kisses. He didn’t ignore Izuku’s glances either, but wasn’t sure whether to be bashful or proud. The toy had been off by an inch or two, Izuku noted as he pressed himself against All Might’s broad chest. He felt All Might’s hands on his hips, guiding him until Izuku sat flush against him. They sat almost quietly, All Might clearly trying not to cause any unnecessary movement in case it caused discomfort. He was tense as a board, and that was no fun, Izuku decided. He began to reciprocate, kissing at All Might’s throat just barely in reach, hands roaming, hips beginning to rock softly in hopes of encouraging his idol. It’s not long before Izuku was riding All Might proper, showing the pro hero just how loud he can really be. He took all active roles upon himself just so All Might could sit back and not waste his energy, so in return All Might showered him with praise in low rumbling tones. ‘Good boy,’ ‘beautiful boy,’ ‘precious boy’.

It was enough to wear Izuku out after only minutes, not that All Might could blame him. The smooth motion of his hips became shallow and jagged, focusing more acutely on speed and immediate pleasure. He began panting, leaning his cheek against All Might’s palm, eyes closed. His mouth opened limply when All Might’s thumb brushes over his lower lip. There was no resistance when All Might took him by the hip and lifted Izuku off his cock. He encouraged his successor to turn, putting Izuku’s back against him, and watched as each pant left him trembling. Izuku’s cock was flush with want after so much time, his thighs quivered, chest heaving with each breath. All Might knew how much Izuku must have ached. He pressed his lips to Izuku’s temple and wrapped his hand around Izuku’s cock.

He kissed Izuku’s curls as he began to stroke, his free hand laid gently across Izuku’s chest to keep him still. Izuku chased the touch, bucking up into All Might’s fist with whines of need. His idol praised him with low whispers against his ear, remarking on how beautiful he was until, with no effort at all, Izuku came into All Might’s palm.

He groaned, curling forward with relief and as he panted, gently laid back against All Might’s chest. He tried to catch his breath as All Might’s hand drifted away to grasp his own cock. Still slick with Izuku’s cum, All Might didn’t hesitate to pleasure himself with Izuku so close. The arm around Izuku tightened. He felt those same lips that praised him kissing the side of his neck, whispers turning to whimpers. Izuku reached back for All Might’s hair, petting and tugging in equal turns, watching in silent awe as All Might bucked up into his fist and came with a groan gritted through teeth. Izuku’s fingers continued to run through bright blonde locks spilling into his view.

All Might rested his brow against Izuku’s shoulder as he tried to catch his breath, his whole body lax. Izuku noticed the slight steam coming off the arm holding him against All Might and gently began removing it from his chest. Freed, he began to clamber off All Might’s lap with weakened knees, but just as Izuku had done so, All Might’s hand encompassed his own. It was a rough tug, unmeaningly so, and when he tried to speak, All Might was Toshinori again. His fragile chest rattled with huffs of labored breath he could easily hide in a more muscular form. Still, he pulled Izuku close in bed with more conscious strength. Content to cuddle, Izuku smiled and rested his brow to Toshinori’s. He ached but felt relieved as Toshinori’s wide hands traveled over his back, rubbing small circles into his skin. It was only a few minutes before Izuku had to insist on his freedom, having grown uncomfortable in the drying sheen of sweat.