Work Text:
“So you think…you accidentally transferred your quirk, One For—One For All you said? To me?” Izuku repeats, making sure he understood All Might’s—no, Mr. Toshinori’s explanation.
Quirk transfers are unheard of, but not that difficult to grasp; the hard part is focusing on the explanation when he’s trying not to piss his pants from the excitement of meeting Toshinori again. The sun is nearly setting on the Takoba municipal beach and while it’s dirty and full of old rusty appliances, it’s pretty secluded…Is this a date??
“Yes, exactly!” Toshinori says, taking them on a zigzag stroll between smashed cars and busted refrigerators, their coloring corroded by the seaweed.. He’s so skinny in this new form, but he’s still so blonde and tall and handsome, and his eyes are just as icy blue…
“I don’t know how it happened, but you’re the only person who might have it. Just to give you the timeline, I put that sludge villain in a bottle, then you clung to me and we talked about my injury and heroism. After that I gave the bottle with the villain to the police right away, and went straight home to rest so I could use my quirk tomorrow…But it came back a lot weaker. You’re the last person I saved, or talked to, and even more specifically, had a heart-to-heart talk.”
“We did, didn’t we,” Izuku recalls fondly.
“Yes, but…I still have no Idea what could have happened,” Toshinori sighs. “The known conditions for transferring One For All are, will, which I guess is more emotionally flexible. I felt my heart breaking when you asked me if you could be a hero, and even though I don’t think you should, I really wanted you to be.”
Izuku feels himself blushing all the way to his asshole “It’s fine! I’m already looking into being a cop, or a camboy!”
"Photography is also an interesting career!" Toshinori gives him a kind, confused smile that makes his heart pound in his chest.
“The second condition is, ingesting some part of the quirk holder’s body, like nails or hair. I just don’t understand how you might have accidentally ingested it? it’s extremely unlikely, it has never happened before.”
“Oh, maybe it happened because I ate your leg hair while we were flying?”
Toshinori freezes, and his eyebrows shoot up. “Could you repeat that, young man?”
“I didn’t eat a lot of it!! I’m not some, hair eating freak, it’s just that I’m a huge fan! Probably your number one fan!!” He rambles. “So I just wanted to have a part of you, whatever I could get my hands on, inside of me.”
Toshinori is clearly extremely uncomfortable. Izuku has seen this look on peoples faces when he talked about All Might before so he’s used to it, although he’s never seen it to that degree of…distress.
“Ahem. I see,” Toshinori says weakly, creating some more distance between them. Izuku notices that in his thin shape, their hips are almost the same width, he wishes he had the measurements but what he’s seen is enough to imagine himself sitting in Toshinori lap.
“So how about you give me back my quirk? Surely if you’re my number one fan, you’d want to see me saving people again?”
Something dark curls inside Izuku’s guts.
“Give it back…Just a few days ago you told me I can’t be a hero and crushed my biggest dream, and now you want me to give it back?”
“I should mention that you won’t be able to use the quirk without my guidance! If you’ll try using it without months of proper training, it will break your body, possibly killing you in the process!”
Izuku starts laughing, and Toshinori flinches like he’s hearing nails on chalkboard. “oh, you think I want to steal your quirk? You think that’s what I’m mad about?”
The truth is, Izuku isn’t mad…at least now he isn’t.
Honestly, he had a tough few days full of grief, but in the end he came to terms with never being a hero…And Toshinori is right—he could still support heroes as a quirkless person.
But no matter how much it hurts, he can’t put his hero admiration behind. It’s too big of a part of him to suddenly kill, so nothing changes in that sense.
Well, one thing changes. He always felt like he needed to repress the perverted, degenerate parts, because if he’s going to be a hero too, he just can’t be like that. He needs to see the other heroes as colleagues and not as sex gods, so he can join them.
But if he’s never gonna…if he’s always going to be a fan and look at the stars from a distance, why should he wear shades if he’s never going to get close enough to get blinded?
And after he internalized that, got excited again, and jacked off too many times, Toshinori came to him, asking for help.
“Then what are you mad about?” Toshinori asks gently. God, he’s so perfect. Izuku does want to see him thrive, he just wants to get something out of it
“I’m not mad,” he replies. “I’ll do it, but I want something in return.”
“I can get you whatever you want! Original hero suites, or an agency tour?”
“Oh,” Izuku laughs, surprised by the generosity. “It’s nothing like that, I just want a blowjob! Though it would be a nice way to pass part of me to you!”
Toshinori freezes at that.
“You know I can’t do that…How old are you again?”
Izuku stops on his tracks, and starts walking the other direction. “I guess I’ll just keep the part of you that I already have,” he sniffles, and even though he’s bluffing, something in his throat does clampses up because even pretending to turn away from Toshinori hurts. “Thank you for your time, Mister All Might…”
“Okay, okay!” Toshinori quickly concurs, swiping Izuku off his feet and putting him on a rusty washing machine. “Sit here, I’ll make it quick.”
“Umm, yeah! Of course!” Izuku takes a deep breath, trying to get his heartbeat under control.
When he snakes his pants down, his dick is already hard, titillated by the fresh, salty sea breeze. Toshinori is on his knees and there’s barely room for him between Izuku’s legs even though he’s spreading them as much as he can. Thin, shaky shoulders rest against his pale, freckled thighs, and that contact makes him squirm in anticipation.
He spent hours, maybe whole days thinking about what All Might is like in bed; he could be a sexual howerhouse, he could be a complete virgin, or anything in between. Izuku swore to love him anyway, but now that he sees the flustered look on the man’s blue eyes as he seals his lips around Izuku’s tip and moistens it with saliva, he feels like this is better. They can both share the same new experience and become one.
There’s this feeling of tight excitement and anticipation in his guts, that melts into pure arousal as Toshinori starts licking around his stiff shaft, clumsily trying to wet it all. He looks like he might fall apart while he’s doing it, but he still seems to take it seriously.
“You’re really sexy when you try to get me off like that. Is this your first time?”
“I haven’t done it in decades.” Toshinori pulls out to explain, and shyly lowers his head again, taking Izuku all the way to the base with hesitant ease.
“Me too. I mean like, I never have! I’m kind of nervous ah—actually!” and that’s an understatement. He’s shaking, sweating, and generally trying not to pass out from how good his dick feels as Toshinori starts bobbing his head up and down, the golden strand of his hair caressing his thighs as he does it and Izuku tucks them behind his ear, thirsty to get a good look at his lover’s face. Toshinori looks up to him when he does it and he’s radiating this incredible, held-back thirst for intimacy, that even Izuku can understand despite being a virgin.
He puts his hands on Toshinori’s nape, watching him melt into that touch and suck even harder, faster, making Izuku lose his mind over how good it feels.
“I love you, you’re my entire life, oh my god—yesyesyes, keep going I’m gonna—Ahh!!haahah!” His high-pitched voice cracks as the built-up pleasure overflows and floods his entire body, and his dick squirts into Toshinori’s willing mouth.
He barely gets to see the cum licked from the edge of his mouth before Toshinori quickly turns away from him, wiping his lips and mumbling as if to shake out of it. Izuku can see his body turning tense, relaxing for a deep breath, then tensing up again.
“Are you sure you gave me back my quirk, young man? It seems like I still can’t transform”
“Oh! That! right, I…” Izuku scratches the back of his nape, giving an apologetic smile. “Sorry, I just forgot!”
“You what?!”
“It just felt so good! I couldn’t think about anything else but how good my dick feels in your mouth!” He hops off the washing machine, fascinated by the little wobble of Toshinori's lips when he says it.
“I—I gave you what you want, please, just give it back!”
He looks like he’s going to cry, and Izuku just can’t have that, he’d rather die .
“Don’t worry, I’ll give it back to you.” He pats Toshinori on his lower back.
“I’ll give it back if you fuck me.”
Toshinori’s expression turns stern and serious. Ohmygod, he’s so hot like that…
“This I cannot do young man, for several reasons, the worst of them being the risk of internal injuries! It’s not something I’d thought I’d share, but when erect, my penis is—”
“—33.4 centimeters in length,” Izuku says, grinning. “24.8 centimeters girth.”
Toshinori looks utterly mortified. “What?! How did you know? I never…”
“I’ve been making estimations, based on measurements, data from people of similar size, and that tight hero suit of yours, doesn’t leave much room for imagination…” Izuku’s lashes flutter just from reminiscing on all the time he spent zooming in on any picture of almight where his dickprint even left the lightest shadow.
“I mean, it wasn’t just me! After posting theories online, a toy company contacted me, so we worked together—”
Izuku turns around, bends down and shows Toshinori the giant custom made plug lodged in his ass. It’s not easy to remove, but eventually he manages to show the plug he helped design, and display it in its full, fist sized glory.
AM looks horrified and fascinated at the same time. Izuku can’t help but lick his lips when he spots the thickening bones in his pants.
“When did you have the time to put this?”
“Well, you did call me, tell me to come to a secluded place, and make I’m alone…So I thought you might have wanted sex?” Izuku explains. He actually wears this plug quite often, but he keeps that info to himself.
“I would never…” Toshinori says, but he comes closer to Izuku, who bends down to show off his gaping hole.
“Do you really think you can take it?” He asks, sounding adorably hopeful.
“Poor Toshinori. you haven’t had sex in a while,” Izuku says sympathetically, shivering as he feels a finger running around his ring of laxed muscles. “It’s okay, my hole was made for you, all of me, I’m yours, I’m—Ahhh!” A moan rips out of him as he feels something warm and blunt nudging his rim, breaching past his entrance and impaling him.
Izuku needs to pinch himself to make sure that he’s not hallucinating, but it’s real. Toshinori pulled his pants down, and is now taking off his shirt too, with a complex expression of desire and restrained embarrassment on his face.
“Thank you, thankyouthankyouthankyou, it’s going to be so good for you,” Izuku babbles, his eyes rolling back as he feels his insides stretch to accommodate the massive cock that’s pushing inside him. Excess lube squirts out as the entire cavity of Izuku’s ass becomes 100% occupied by Toshinori.
Toshinori’s bony arms wrap around his waist and hold him down as he starts to thrust, feeding his massive cock in and out of Izuku’s hole with hesitant yet eager thrusts.
“I’ve never had such a willing partner, not with my size, so hearing that makes me—ngh, it makes me—”
Smoke appears around them, and suddenly Toshinori’s touch feels firmer, bigger, and his limbs feel thicker. Izuku holds his torso up by the elbows and turns to see his biggest fantasy coming true; a fully sized, naked All Might, crouching over him and fucking the life outta him.
“Did you uh, ohmygod, did your quirk—”
“It’s not that,” Toshinori grunts out as he rams into him, wiping a drop of blood from the edge of his mouth. “It feels different, it comes from a different source of energy than One for all!”
“That’s amazing!!Yes! Yes harder!! Detroit Smash my ass All Might!”
“Don’t call me that, please,” Toshinori protests as he adjusts his position so Izuku’s tiny body fits just perfectly between his spread thighs. “This is not something the symbol of peace would do!”
Oh, but it’s exactly the kind of thing Izuku always wanted him to do.
It truly is, this moment is magical and Izuku wouldn’t care if he dies right now, having his biggest dream come true. Well he might actually die, considering that he can feel his internal organs squeezing to make room for Toshinori , but he really doesn’t care. The pleasure from the intense friction and stretch inside him overrides any sense of self preservation, and the sensation of his prostate being assaulted with every thrust is heavenly . The only thing keeping him from cumming are the constant theories running through his head, speculations and observations; all of the brainpower he’s put into obsession over his hero now works extra time and Izuku can’t help but use this opportunity to get some valuable info.
“If you cum while using your quirk, how far do you think it will reach?”
“Oh, I— I once tried to spit to a distance and, shit, and it was about the distance of a baseball field, so I ah-assume ejaculation works roughly the same?”
“That’s incredible! And what’s the longest time you’ve held an erection?”
“Four hours, or five—I though you wanted to have sex?” Toshinori asks, utterly confused.
“I do, but I’m also your biggest fan, so I can’t help but ask! This is a dream come true, and you’re so nice to me, and you feel so good inside me…”
The words die on his tongue once Toshinori thrusts especially hard and Izuku mewls out an inhumane noise, feeling that enormous cock churning up his guts. He can feel Toshinori’s raw power, not only by the strength of his thrusts but also by the thickness of his thighs pressing against his asscheeks, the grip of his fat fingers around his waist and the way they nudge against the very visible dick bulge inside him, making it very obvious that Toshinori’s cock is reaching almost to Izuku’s diaphragm.
He can feel how far in it is, not only from the outside—His insides feel tight and it’s hard to breathe, making him pleasantly lightheaded, cockdrunk, purely blissed out with the knowledge that so much of Toshinori is inside of him.
“What if I got pregnant from this?" Izuku wonders out loud.
Toshinori, freezes completely, still balls deep into him. "That—you—that can't happen, right?"
There's a long serious pause. Izuku thinks about his belly swollen with Toshinori’s baby and beams, "No! Of course not! But what if?
“Uh, can we—can we please talk less?”
Izuku looks at Toshinori through his lashes, giving him a bratty smirk. “You’ll have to fuck hard enough to shut me up.”
Toshinori’s expression hardens like it does when he’s dealing with especially bothersome villains, that makes Izuku squirm with anticipation. He straightens and picks Izuku up, turns him to lean against his chest, and holds him in half, so Izuku’s knees are by his ears.
Izuku probably looks like an onahole, a boy-shaped toy for Toshinori to fuck and oh, he does so ruthlessly, thoughtlessly, slamming Izuku up and down his cock with enough force to bruise his ass, if not dislocate his hips.
“The quirk young Midoriya, give it to me,” Toshinori growls as his cock swells and he picks up the pace one last time.
Izuku nods, barely in control of his own body as Toshinori pumps into him like he’s fucking a cocksleeve. “I’m going to give you everything you want, kiss me, please, mphh…”
Toshinori immediately does so, making Izuku feel like he’s truly ravaged with his lips slamming into his, and his large tongue lapping the inside of his mouth, swallowing his saliva like a parched man.
They both cum like that, with every bit of them intertwined, their limbs tangled, and their hearts beat as one through their flushed chests. This is what finding your missing puzzle piece feels like , Izuku thinks as a torrent of semen floods his guts til his lower stomach bloats, rendering him unable to react as the orgasm wrecks through him, and he feels every nerve in his body light up in pleasure.
Toshinori is quick to separate one again, and Izuku watches him blissfully as he tries to use his quirk once more…to no avail.
“Izuku, my quirk, please!” Toshinori begs. “There’s people I need to save, you can’t keep it forever!”
“Oh, just one little thing!” Izuku rummages through his yellow backpack and pulls out his phone. “I’d love it if we could take some photos of you like this, so I can remember this moment forever.”
Toshinori pales, his All Might form already evaporating from his body. “That’s blackmail material, I can’t let you keep any evidence of what happened here today!”
Izuku pulls a little test tube from his bag, and swipes a finger to collect some semen from his gaping anus into it. “I mean, I already have plenty of evidence, so what’s a few photos for me to—”
“—Fine!!! You can keep the quirk!” Toshinori yells out, falling to his knees. “I’ll train you and teach you how to use it, you can probably handle it if it hasn't killed you already…So just forget about what happened today and focus on being a hero!!”
…
And this is the story of how I became the greatest hero.