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Story Notes:

Crossposting this from my Archive of Our Own account. 

This will contain both M/F, F/F and M/M pairings, and a laundry list of kinks all involving size changing and giantess/giants. 



The original posting of this fic can be found below at AO3:
https://archiveofourown.org/works/25149127/chapters/60937759#workskin

 


Author's Chapter Notes:

The first chapter is a M/m based content, with Shouta Aizawa (Eraserhead) and a male Reader with a shrinking quirk.

Warning for Male/Male content, and explicit sexual content. 

 


Looking around the apartment, you couldn’t help but smile fondly at the sight of all your stuff in boxes.

 

You were officially moving in with your boyfriend after so long, no more switching back and forth all the time between your places. Finally you and Shouta would finally take the next step in your relationship.

 

You would have probably moved in together sooner, but both of your jobs took up so much of your time, what with him being a teacher at UA and you working for your Hero Agency. You mostly did reconnaissance, and search and rescue operations. 

 

It helped that your Quirk ‘Micro’ enabled you to shrink your body down to a tiny size, being able to control your height and how small you wanted to go. You were able to scout out areas stealthily, as well as inspect and navigate collapsed structures and tiny hard to reach places with ease where normal sized heroes would have no chance of reaching, at least safely.

 

There were also other applications for your quirk that you enjoyed exploring with your boyfriend. 

 

The mere thought of your many intimate moments using your quirk made your cock twitch and harden slightly in your pants.

 

Trying to brush off the distraction, you looked around the apartment once more, you promised Shouta you would have all your belongings unpacked and put away by the time he came home, which would be in an hour. 

 

You had packed away most of it yesterday with his help, and the rest of the unpacking could be more than finished up within the remaining hour.

 

“Hmm, I’ll just check my emails first and then finish up here” You said to yourself, walking over to the couch and sitting down with a huff, reaching forward to your laptop on the coffee table and turning it on.

 

It didn’t take long to boot up and login, instantly opening to your last browsed tabs which included your emails, doing a quick browse and finding nothing important you quickly closed down the window, only for your eyes to widen slightly at the window browser behind it.

 

It was open to the Porn Site R-Rated Heroics , a website specifically dedicated to quirk-related porn clips and full length videos, the name coming from the genre of porn actors and actresses engaging in Pro-Hero porn shoot parodies and roleplaying videos, which was very popular. The site hosted non-parody porn videos too, centered on quirk usage in a variety of ways, and plenty of genres and fetishes which contained quirks or were enhanced by their usage. 

 

You couldn’t help but stare back at the paused video you’d been watching the previous day, in it was an All Might look alike, who in the porn community was the most popular All Might parody actor and pornstar, whose nickname was somewhat laughibly Ball Might! .

 

Though seeing the rather generous sized and bulbous testicles he sported under his similarly impressive cock, the name fit.

 

The video was paused as Ball Might was gripping the ass of another Pro Hero Parody actor, Bend-over. The muscular redhead’s face twisted up with pleasure as he gripped the sheets of the large bed they were filming on.

 

You couldn’t help but lick your lips slightly, the sight of them even in a freeze frame was enough to stir your dick once more, hardening by the second before you glanced up at the clock. 

 

Surely if you rubbed one out quickly you could return your focus back to the task at hand. 

 

You quickly ran to the bathroom and grabbed a small tube of hand lotion, that would be more than enough for a quick jerk-off session. 

 

Returning to the living room you were about to sit down when you eyed the laptop, a small grin rose on your face before you began to strip down, tossing your shoes, socks, shirt and pants to the side before ditching your underwear last, your cock immediately springing up as it was released. Unscrewing the cap from the tube of lotion you squeezed a tiny bit from the top without letting it fall, before setting it down on the coffee table.  

 

Activating your Quirk, the room immediately shifts in your perspective as you shrank down to just over six inches tall, making the laptop screen so much larger like a home theatre screen.

 

Hopping onto the coffee table from the couch, you made your way over to the mousepad and moved the cursor to restart the video before clicking play.

 

As the video began, you walked over to the bottle and collected a small glob of the melon scented lotion and stroked your already hard cock as Ball Might appeared on screen.

 

~0u0~

 

Shouta trudged up the steps to his apartment looking half asleep, he didn’t like to admit it out loud too often, but he loved the class of 1-A sincerely and would gladly take a bullet for any of them….even Mineta.

 

However most of the time he felt like tearing his hair out over the crazy stunts they pulled, and put them all on detention till they graduated, hell even afterwards if it were possible. 

 

That was something he was fine saying out loud to anyone who would listen.

 

Finishing off the last of the black coffee from the styrofoam cup he was holding, his other hand fished his keys out of his pocket and opened the door to the apartment.

 

Closing the door behind him softly, he turned around and saw that there were still a fair few boxes littered around the apartment, especially near the living room.

 

Shouta was about to call out to his boyfriend when a peculiar sight caught his attention.

 

Walking over closer, his eyes blinked several times as he stood behind the couch and peered down at the coffee table.

 

There was his boyfriend, lying spread eagle in tiny size in front of the laptop, one hand furiously jacking off his cock while the other played with his nipples, and on the screen a video of that All Might porn actor he knew his boyfriend liked fucking a smaller man who was dressed very familiarly.

 

“.....Is that supposed to be me?” 

 

~0u0~

 

You suddenly let out an embarrassingly high pitched scream as you heard the unexpected voice.

 

Rolling over quickly, you saw that it was Shouta leaning over the couch analysing the scene. Your face instantly went beet red as you frantically moved to stop the video.

 

“S-Shouta, you’re back early” you said quickly, moving the cursor and downsizing the tab.

 

“I’m actually ten minutes later than I said” he said, causing you to glance at the clock and realize just how much time had passed.

 

“And you said you would have the rest of your stuff unpacked by the time I got home, and instead here you were jerking off” he continued staring down at you with an unreadable expression.

 

You couldn’t help but squirm under his gaze as you stammered out a response.

 

“I-It was supposed to be quick, but I finished and realized that there were some more videos released in the series I subscribed to recently, and...and I kind of got distracted…” you said trying to avoid his gaze.

 

Shouta however glanced down slightly to see that your cock was still painfully hard, causing a small smirk to appear on his lips.

 

Before you could say anymore you found yourself suddenly lifted up off the table, your midsection embroiled in Shouta’s capture weapon.

 

Moving around and sitting on the couch, Shouta maneuvered you up close to his face before turning his attention back to the laptop and bringing up the window again, causing your embarrassment to return.

 

Pressing play on the video, Shouta watched as the porn actor playing him was railed from behind by Ball Might, holding his porn self’s legs in the air and thrusting into him from above.

 

“Hmmm, I guess they could have done worse” Shouta observed before turning his attention back to you, a miniscule smirk still present on his features.

 

“So is this some secret fetish of yours? Imagining me getting fucked by my colleagues?”

 

“N-No! Honestly I had no idea about this video till I saw it pop up in my subscription list-” you tried to defend yourself, only for Shouta to cut you off.

 

“But you watched it anyway. You could have waited an hour and experienced the real thing, but settled for a poor imitation” he said as he brought his right hand up, working up and down your left leg with his index finger and causing you to shiver.

 

“S-Shouta…” you said as your cock bobbed in the air.

 

“I guess I’ll have to remind you why nothing can beat the original,” Shouta said as he moved his index finger down below your balls, making small circling motions under your sack and making your legs stiffen from the sudden pleasure.

 

“Mmm, you know seeing you tiny always gets me hard” Shouta said before moving you closer in his capture weapon, your tiny form now right in front of his face which was still slightly taller than your entire body.

 

You weren’t prepared for the sudden appearance of his tongue, opening his mouth and moving you down with his capture weapon. He ran his tongue from your feet all the way up to your forehead, running along your body and making you moan out, especially as the spongy moist muscle dragged along your cock. 

 

After he tasted you, he licked his lips in a teasing fashion before letting out a breath.

 

Your now moistened front was hit by the warm gust of air as he did this, encompassing you in a dark coffee scented haze as Shouta suddenly raised you up higher, leaning back on the couch and moving you above his face.

 

“Now for the other side” he said before bringing you down just above his mouth, once again releasing his tongue, but this time running it up and down your back.

 

You moaned out at the feeling, letting out a particularly long one as the tip of his tongue rested on your ass, swirling around it in circular motions and coating your ass in his saliva, a strand of it running right down your crack.

 

Your cock was leaking by this point, aching for some more stimulation, but your hands were trapped at your sides and unable to reach, leaving you at Shouta’s mercy.

 

After a few more seconds of this, Shouta moved you back down once more towards the front of his face, taking in your reddened cheeks and heavy breathing.

 

You were close to finishing again when he returned home, and now you were quickly approaching your threshold once more.

 

“Are you close?” he asked rhetorically, knowing full well you were nearing your limit.

 

“Shouta please…” you begged as he watched you for a moment before moving his hand across the coffee table and picking something up, returning to your view a moment later holding a pen in hand and the tube of lotion in the other.

 

You quickly connected the dots as he squirted a small (to him) dollop of the cream on the back end of the pen.

 

Just looking at the thick blunt end of the utensil was making your asshole quiver in anticipation, you had already spread your legs as far as you could before he even moved it towards you.

 

“Heh, you really are a needy little bottom aren’t you Y/N?” he asked teasingly.

 

“Please Shouta, fuck me! I need it!” you pleaded, causing him to bring his free hand up and rub it around your still hard dick, collecting the relatively miniscule amount of pre and bringing it to his lips, sucking his finger clean and releasing it with a pop.

 

“Since you asked so nicely” was all he said before raising you up slightly and spreading your legs with his index and middle finger, the other hand bringing the end of the pen up and sliding between your still salvia slickened asscheeks, quickly finding your winking and needy hole.

 

It seemed he was happy to tease you a few moments before, prodding and slowly massaging around and on your asshole with the pen, enjoying seeing you soft moans and squirming in his capture weapon.

 

Your moans gave way to light growls as you were about to scream at him to get it over with, but just as you opened your mouth all breath seemed to leave you as he suddenly pushed forward, burying the end of the pen in your ass and making your whole body seize up in shock.

 

As you let out choked gasps, Shouta gave you a few seconds to adjust, taking in the sight of your hole stretched the lubricated intruder before he began lightly pulling back.

 

Waiting till it was just about to leave you before he thrust it back again, making you finally return to your senses and let out a long pleasure filled groan, your legs flailed slightly as he began to fuck you in earnest.

 

“S-Shouta! Yes, just like that! Keep going, please!” you begged, your chest moving up and down every second as your breathing sped up with each thrust.

 

Shouta moved his head closer, wanting to take in every detail as he thrust the pen up into your ass with an even pace. 

 

You knew you wouldn’t last long, the earlier interruption as well as Shouta’s combined efforts were once again causing you to come closer and closer to the edge.

 

Once more you felt the warm moistness of his tongue on your body, Shouta having opened his mouth and brought your cock and balls inside with one swift motion, you threw your head back and moaned out as Shouta’s eager tongue began to caress and suck on your cock, his large muscle completely dominating your tiny member as it had many times before, reminding you why giant blowjobs were so great.

 

Letting out a low hum, Shouta made the vibrations course through your cock, stimulating the head and causing you to leak pre cum like a faucet onto his tastebuds.

 

Moving the tip down to rub along your smooth sack, you felt your breathing speed up even more so.

 

Shouta’s thrusting now increased in speed, rubbing against your prostate perfectly with each upward stroke as your moans came out more broken and disoriented, your body tensing and flailing as you teetered on the edge of your release.

 

And then in one sudden movement, one harsh thrust which pounded your prostate just right, you let go.

 

Letting out a scream as your body thrashed against the capture weapon, your cock exploded inside your boyfriends mouth, coating his tongue in your tiny load as you humped and road his face as best you could, shooting load after load onto his taste buds as your feet gripped onto the sides of his chin and feeling the course rough scratching from his stubble.

 

Your ass gripped and squeezed around the pen so tightly you thought it would become stuck as you rode out your climax, your gasps giving way to heavy breaths as you collapsed on Shouta’s face, your head resting beside his nose as he let you lay there for a few moments before releasing your cock and moving your back down to the table, releasing your body from the capture weapon and slowly siding the pen out of you ass, causing you to moan momentarily at the sudden loss.

 

As you came down from your release and relaxed into the afterglow, Shouta leaned down and pressed a kiss to your upper body, making you smile softly up at him.

 

“Who knew...turning into...a human pencil topper….could be so much fun…” you said slowly as you looked up at your lover with half lidded eyes. 

 

Shouta gave you a deadpan look at this. 

 

“Oh come on...that was funny…” you said, still regaining your breath before Shouta reached down and picked you up softly, placing you down on a cushion on the couch before he stood up.

 

“I’ll go and finish the rest of the unboxing, you just get some rest” he said, lifting up one of the boxes and preparing to make his way into your bedroom, before pausing and glancing back at you.

 

“Oh, and you’ll be paying me back for that this evening” he said before disappearing from sight.

 

You merely fell back onto the cushion and let yourself doze off, dreaming of riding Shouta’s cock in the most literal sense and being showered in the Underground Hero’s cum.

 

It wouldn’t be the first time. 

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