Chapter Text
&
Tony's eyes drag down your body as you pad in with half a cup of coffee in one hand.
"Mm, I am awfully good at making things, aren't I?"
You look down past your oversized sweatshirt to your bare legs. You can't help but agree. You wiggle your toes, and your eyebrows.
Tony leans back and casually flips a switch that has you squealing. He has done such things on purpose before, but he did not remember planning anything intentional, and thus flicks the switch back off while looking to you in surprise.
You had flung your arms across your chest, consequently throwing the remains of your coffee out of the mug and over your shoulder.
You were honestly impressed you had held onto the mug.
His eyes move from your face, to your arms, to what your arms were holding close, and back over to the switch. He had activated a magnetic field. And you... had metal in some very fun places.
Tony laughs at your expense and sustains some pretty brutal eye contact as he turns the magnetic field back on, and leaves it on.
You hug your arms in closer to keep your piercings from pulling and perking up your tits. You glare.
He approaches with caution and slowly moves your arms away from your chest, also taking the opportunity to grab and set aside your empty mug.
He makes a game of it.
“It doesn’t hurt, does it? Just surprised you? The pull?”
“Yeah no, I’m good… why?”
Tony shot you his signature smirk. You considered fleeing.
“Ah, magnets. I knew there was a good use for magnets.” He released your arms, returned to the controls, and spun around once in his chair with glee.
You squeaked as he maneuvered the magnetic field to influence your position. Raising it a little higher resulted in you arching your back and popping up onto your tippy toes to instinctively ease the pull. Lowering it brought you to your hands and knees.
"Still good?" His finger hovered over the switch.
You still glared, but he could see the signs in how you panted with lips parted.
"Don't- no, I mean-" You grumbled and then sighed, voice meek when you next spoke.
"I like it when you make me work for it. Daddy."
Tony glowed.
"And I love watching what you'll do to yourself to impress me." He winked, then knelt down with you to take you by the shoulders and kiss down your neck.
You sucked in a wet gasp and pressed your breasts to his chest.
"Just don't break me."
"We'll see."
&
"Daddy?"
Tony looked up just long enough to confirm it was you.
"Hey baby girl, what's got you up so late?"
"Knew you'd still be down here. Figured I could help with whatever so you'd finally go the fuck to sleep."
"Aw, is somebody a needy baby?"
"Well yes, but mostly just cold." You grabbed a data pad he'd discarded on the workbench nearby and checked the history.
"Ooh, bioprosthetics. I'm good at that."
"Of course you are; you're a Stark. Now go program that robotic leg over there to sync with the one I just attached so we can go to sleep."
"Yes sir."
His gaze flicked to you briefly out the corner of his eye.
“Thought you were looking to go to bed, not get fucked.”
“Up to you, sir.”
“Guess we can do both.”
&
Tony came up behind you and yanked his helmet off your head.
“Heyyy, dad, I was just… wanting to get a look at the user interface… you had set up… in there…”
He lifted an eyebrow, perfecting his do you really think you’re getting away with that look.
“Well, I mean—"
“Bored of being all safe and cooped up with me? Fucking some unstable megalomaniac and getting your O-face shared all over the cloud not enough excitement for you? Wanna jump straight to danger now?”
You were caught off guard— shaking, even. You couldn’t tell if he was serious or not— was he really mad at you right now? For this? For… being like him? He didn’t even ask— he didn’t let you explain, he, he didn’t even know what you were doing and yet he was—
“You dumb baby,” Your gasp was audible. “thinking you can decide what’s best for you like you haven’t had a consistent pattern of fucking up when you’ve deliberately kept secrets from me…”
You were having trouble reading him with the uncertainty. Was he just fucking with you? Did it matter? You were tense in a way you were unused to when aroused— the touch of fear here wasn’t from adrenaline, it was from shame. Was he really seeing you as such a disappointment—
“Does daddy need to teach you a lesson, hm?"
Oh, wait, that could help… he’ll show you what to do… he won’t let you do anything wrong when he’s with you…
You allowed your head to bob up and down slowly in a haze.
"Mm, good girl."
A shiver, as expected from you by now. He checked your chin in the space between his index finger and thumb.
“You'd fuck anyone who gave you a compliment? Is that why they all like you so much? So desperate, obedient? Easy?”
"Mn, no!" You batted his hand out of your space, stretched your neck up, leaned in with the help of your hand on a shoulder, and sucked at a spot on his jaw. “S’you.. s’for you..”
“So you’re saying you’d still choose me, huh?”
You gave an exclamatory hum, being unable to say much else with your brain fogged and your tongue being otherwise occupied— but it was enough to read as an affirmative.
He wrapped you closer and smoothed his hands down your back before squeezing at the flesh above your hips.
“Yeah, show me what I’m looking for. You pick me, I’ll pick you. Show me you’re worth my time.”
It’s funny how he said it as if you weren’t already taking over his whole world.
&
“Hey, kid.”
“Hm?”
“Here,” he tossed you a thin silver ring. You automatically went to slip it onto your left middle finger and held it up to the light.
“Shiny. Plain. What’s the deal?”
“Twist it.”
“Spin it, bop it,”
“What?”
“Nevermind.” You twisted the ring on your finger.
Nanotech shot straight up your left arm, over your fingers, across your collarbone to your opposite shoulder, down your chest, and stopped in an arc just above your belly button.
You stretched out your arm, and twisted it clock and counter-clockwise as the light reflected off the silver. You brought your arm closer again and slid it across the metal that had spread across your chest, tapping lightly with your fingertips.
You inhaled through parted lips.
“Dad… did you seriously build me a superhero suit?”
“Well, it’s just a prototype, and that’s about as much of you it can cover right now, but—”
“This is SO COOL!?" You spun around and then brought your arm up to your face so close you were pressing your nose against it, eyes trying to discern the nano-connections human vision alone was incapable of seeing.
“Oh my gods, can you make it like, that metallic-holographic silver-rainbow kind of color?”
“Uh, probably, but I bet you could do it better.”
“Nice try— but you started it, and you’re finishing it.”
“Is that how you show gratitude?”
“Do your unsolicited gifts often come with conditions?”
He pouted and rolled his eyes away from you, tapping on something that didn’t need to be tapped on.
"Chromatic!"
"What?"
"Chromatic metal! Can you make it chromatic metal?"
"...Is this where your mind goes?"
You looked back to the suit flush to your skin, considering.
“…Will you fuck me in it?”
He stared.
"That's a yes?"
He smirked.
"Hey, what happens if I choke you with it?"
"Why don't you try it and find out?"
You whispered, "Trial one..." and lifted your hand to rest on Tony's neck, your thumb just above his collarbone pushing lightly into the pressure point.
Everything in his eyes said do it.
&
“Dad,”
“Kiddo?”
“Did you know people write fanfiction about us.”
“Oh, you too? Because believe me dear, I know all about the troves of raunchy material about my sweet sweet body—”
“No, uh, get over yourself— about us. Together.”
“Oh. Huh. No kidding?”
“We should do one.”
“’Do’ one?” He smirked. “Are you asking me to scene with you, baby girl?”
You sucked in your cheek and squinted.
‘Shut up. Yes?”
“Oh, princess, I would love—”
“Yeah, yeah, okay then, read this.” You texted him a link.
“Hooo, what a title—”
“Tony.”
“Yes, yes, reading, deciding, okay, okay…”
&
You hear a rustling in the direction of your walk-in closet and poke your head in to find your dad digging through the shoeboxes you use for storage.
"What're you doing in here?"
"Looking for your diary."
"Yeah, okay. Can I help?"
"Need your social security card."
“Oh, well yeah, that’s in here somewhere.” You kneeled on the opposite side of the closet back-to-back with Tony and helped sift through the stacks of accumulated junk (read: important paperwork and the leftover scraps of repurposed grade-school Arduino projects.
"You don't have the number saved anywhere more convenient?"
"They want a scan of the card itself."
You hummed.
“What are you signing me up for?”
“Eh, don’t worry about it.”
“That’s not reassuring.”
"Don't know, some kind of clearance I've been putting off making official for you, I forget, Pepper just brought it up again."
"Oh boy, it's always fun to learn I've been doing things I shouldn't've."
He hummed; the shuffling paused.
“I- is this a box of non-disclosure agreements for your previous sexual partners?”
You glanced back, and frowned.
“I’m not answering that.”
“You just did.” He flips through the pages. “Why are there so many!?”
“Oh please, like you haven’t fucked more!?”
“I don’t have— a shoebox full—”
“What, so, how do you keep track? Old bedpost? Little black book? Word document?”
“I don’t keep a tally!?”
“Aw, I was hoping we could compare.”
He thwacked you over the head with a handful.
“God, you even printed them out!”
“I thought it was funny..” You murmured into your sleeve. “And I mean, I didn’t want to deal with digital signatures and freaks thinking they’re slick using fonts like I can’t tell the difference. Pens are my friend.”
Tony whistled low. “But shit sure blew up with your drone daddy, didn’t they?”
You glare. “Low blow.” Your tongue clicks. “At least I’ve never had any pregnancy scares. How many half-siblings do you imagine I have out there Mr. Big Stuff?”
“You want a pregnancy scare, baby girl? Get your sweet pussy over here for me to fill—”
“Pass, daddy dearest, world doesn’t need any more yous— we’re already too much.”
“But aren’t you always crying out for more?”
“Sure, old man.”
“Your ass will pay for that one later, brat.”
“You sure you’ll remember?”
Tony cocked his head and arranged his eyebrows and lips as if to say, The Audacity! Before immediately lunging for your knees in the most efficient effort to get you on the ground beneath him.
He put you down hard, but you sure didn’t let him have it easy.
Your moaning could only be outdone by your laughter.
And then your mouths were full, and rather sloppy by the end.
"Not gonna make me sign one?"
"Doubt that's really something we want in writing."
&
It'd been a pretty constant afternoon of being dragged from project to project for your professional opinions (what you liked to call your thoughts and prayers), and somehow due to a minor emergency you were roped into being the acting mechanic for some single-person aircraft you'd never seen before in your life.
Everyone kept insisting you'd be able to help as if all types of engineering knowledge were innately transferrable and you'd somehow mastered all procedures related to all moving vehicles, meanwhile in reality you were having an anxiety attack in the guts of an airplane with a grease smear across your forehead trying to get your YouTube video to buffer so you could figure out which part you were supposed to stick where without looking like a complete idiot.
You start to wonder if the plane metal is blocking your phone's ability to get wi-fi or something (airplane mode's a thing, right? Isn't there some kind of signal interference with planes and phones...?), but you can't remember how anything works anymore and how much time did you have to do this? Why did you need to do this again? Why are you too stupid to figure this shit out?
"I don't know shit about airplane mechanics, but of course I'm supposed to know how to fix this because I'm (Y/N) fucking Stark, right? Of course I know how to fix it. I DON'T KNOW HOW TO FIX THIS."
You step away from the plane with the intent of throwing yourself to the ground, when Tony, coincidentally swinging by and thus witnessing your lovely little yell, is immediately behind you, hands on shoulders, steering you out of the room to find some privacy. He doesn't say anything, and you're holding your breath until you can be alone.
The door to a side room shuts behind you, and you gasp in a shaky, wet inhale, followed by a cough.
"Shh, shh, let me fuck that brilliant little mind quiet, hm?"
"'M not—"
"None of that."
He held his hand over your mouth as you whimpered through every thrust of his treatment. The more you cried the more he squeezed until you lost yourself in the pressure of him and not the pressure you'd put yourself under.
What a way to give up control.
&
He was curled around you on the floor, sandwiching you between himself and the wall. Your face wet with tears and sweat, he cupped your cheeks and pulled you to face him.
"Why so beat up about the plane, baby?"
"I should know how—"
"You've never worked on one before. Mechanics aren't your specialty."
"But it should be like—"
"It isn't always a smooth translation."
"But I should be—"
"Should, should. Why? Who said?"
You paused.
"...Me. Everyone. You. Expecting things of me..."
"They asked because they saw you. Because they needed help and you were there. They didn't select you as the end-all-be-all master of aviation mechanics, they just figured you might be able to take a swing better than they could in the circumstances. It wasn't a test. Why were you treating it like one?"
"I just didn't want you to know I couldn't do it."
"Why so concerned about me?" Okay, loaded question. You could tell he wanted to dismiss your typical responses of 'my massive praise kink' and 'your intolerance for incompetency" by the way he rolled his eyes at the face you pulled.
"Beyond all this," he gestured between the two of you, "and what we've talked about before, what else is there you're not saying?"
You thought about it.
"I've just... I've seen you really humiliate the fuck out of people before for not knowing something or not suggesting something brilliant, and it terrifies me to think I could be on the receiving end of it. Especially since you never let anyone live anything down."
He clicked his tongue.
Tony runs through several excuses for his behavior and several exceptions for you in his mind, but ultimately decides you would either see through them, or blow them off.
"Okay. I know I can be an asshole. I'll work on it." You were genuinely not expecting that answer. It surprised you enough to listen on. "Just know this— you have never once disappointed me."
"Okay no, that's a lie, do you not remember—"
"You need to learn the difference between dirty talk and serious character evaluation."
"Not just that, but Quentin—"
"Honestly, how could I really be disappointed when you took him so well?"
The shock on your face was obvious.
"You were such a good little sub for him— a bit bratty, but it's hard to not recognize we have similar tastes. Can't really be disappointed in all that happening when it brought you here to me, hm?"
You looked at him like he was everything while your tongue danced circles on your inner cheek.
"So how about that? Feel better?"
"...Yeah."
"Good. Now, would you like to learn how to fix an airplane?"
&
You'd been taking a nap under your desk. When your door swung open and hit the wall, you'd shot up and slammed your head on the keyboard's slide-out panel.
"Owh, fuck me!"
"Gladly dear, when and where?"
"What're you doing here?"
"I own the place, surprised you forgot, heiress to the Stark fortune—"
"I mean here, here, in my business office that I can only be found in twice a year, in an uppity administration wing of the tower I don't think a soul has ever seen you in before, bothering—"
"Oh, wasn't that obvious? I'm here to fuck you over your desk, Miss Stark."
You were still a bit slow with the head bang and the recent nap and all, so it seemed awfully sudden the way Tony approached, palmed the back of your head, and pressed you into a fold over the surface, kicking your theoretically-ergonomic nightmare of a chair out of the way. You were grateful for the way he made sure your chin landed softly.
As he yanked down your pants, you stretched your arms out to get a handhold across the desk and knocked a computer mouse to the floor in the process.
"Ooh, you'll pay for damaging company property."
"I'm pretty sure you're the one who'll be paying, and really. I doubt it's even broken—!" You yelped at the first spank at Tony's hand.
"I know you're a little slow and rambly when you wake up so I'll just be clear— I want to spank you before I fuck you over your desk, and I don't need a real reason to do so."
"Oh. Yes. Right. Go on."
And he did.
&
The doors slid open dramatically upon Tony's entrance into Research & Development.
"Ayo, anyone seen my kid around? Haven't crossed her all week."
A clamor arose amongst the present engineers.
"Heard some rumor of her downstairs helping the interns with their year-end proposals before the showcase?"
"Yeah, apparently the short one with the phoenix wing simulation asked her to take a look and give some pointers, and she straight up downloaded the shit to her gauntlet and test flew it. Now she's demo-ing everyone's projects."
"I heard she liked the phoenix sim so much she offered to showcase it herself since the intern's proportions don't match what she based the original design on."
"I actually heard she taught the intern how to adjust the specs so she could showcase it herself."
"I hear she's giving them full-on lectures answering whatever they ask."
So naturally, Tony had to investigate.
&
He followed the noise and came upon you in a basketball gym wildly gesturing between several numbers and figures projected onto a light blue bedsheet duct-taped to a brick wall as two or three interns watched on in rapt interest while quickly tapping away on their tablets trying to keep up.
It always gave Tony a touch of pride to see you in your element.
A dozen or so more interns were spread out across the bleachers working on their own things, occasionally glancing up to see whether or not you were still occupied. They started whispering a bit more amongst themselves when they noticed Tony.
He kept his hands in his pockets and ambled over until he was a touch too close behind you considering the range of your movements.
He did not wait for a lull in your speech to interrupt, and you transitioned seamlessly into a response despite being surprised mid-explanation by your unexpected visitor.
"Heard you're going to be showcasing as a firebird for an intern this weekend."
"Nah, she asked, but I'm not stealing her shining moment. I just nudged her in the right direction so she could spec it for herself." You turned toward the opposite side of the court where the bleachers were set up. "Oh, she was just here. Wanted me to double-check something I thought—"
One of your disciples was kind enough to chime in:
"Yeah she did, but that was over an hour ago and you already gave her the answer she needed."
"Did I? Good. Wait, over an hour? What time is it? No, it doesn't matter, I didn't have anything to do today, pushed it all..." You vaguely waved your hand away and trailed off, lost in thought.
"Oh!" You spun on your heel and threw your arms out in a gesture to indicate Tony. "You're here!" You swung your arms back to yourself. "Come here!"
You immediately walked out of the gym, calling back behind you while pointing to the bedsheet, "I'll be back to finish that, okay?"
Tony saw the interns shrug between themselves before he jogged to catch up with you. You didn't stop until you turned two corners, at which point you shoved Tony to the wall and dug your face into his neck once he'd joined you.
"'M needy. Need you. Been busy. Forgot. Love you. Make me come. Real quick. Pretty please? Need it so bad, need you so bad, please daddy please." Your voice only devolved further into a whine as you went on.
He moved his hands to your shoulders as you continued to press yourself into him, humming low the way you liked.
"Aw, pretty baby got so caught up teaching the interns she forgot to come and be good for me, hm?"
"Mhm, sorry daddy, I can make it up to you, just please please make me come now, I need to I need to—"
One hand came up to pet your hair.
"Shh, right here? Yeah, daddy's got you," He popped a thigh between your legs and pulled you by your hair to lean into it and grind.
You opened your mouth onto his neck and slobbered more than sucked as you took your pleasure from him until you came with a whimper, a shiver, and a very much needed release of tension. Tony held you until you stood yourself back up, readjusted your pants, winked at him with those oxytocin-bright eyes, and ran back to finish up whatever you'd been explaining.
He brushed his hand through his hair and shook his head.
&
You're just casually working along on your black box as you listen to a woman shamelessly flirt with Tony a few feet away.
You don't notice the way he keeps flicking his eyes to you to gauge your reaction. He doesn't hold back, flirting right back as expected. He can't help his curiosity when your only notable reaction seems to be a little smirk whenever he drops an innuendo.
Once the woman saunters away expecting she'd set herself up for a future date, Tony appears behind you.
"Not jealous, baby girl?"
"No reason to be— anyone can call you daddy, but no one else can mean it the way I do." And the look you shot him over your soldering iron said checkmate.
He was impressed. And hard. (Mostly hard).
&
It might've been the first morning Tony was lured down to his own lab by someone else making an absolute racket in it. Bruce too was surprised to see Tony outside the source of the clamor, and followed him to investigate.
He had a pretty solid idea it would be you, but what you were doing—
"Did you... rebuild my jerry-rigged particle accelerator?"
At his voice, you startled and dropped a wrench, slapping a hand down on the body of the pipe to settle yourself.
"Fuck, you're sneaky."
"Or maybe you're just loud and not paying attention to your surroundings." You had the familiar look in your eyes of being many overcaffinated hours into a science-induced state of mania. "Gonna answer?"
"Yeah, yeah... I needed it for... something.."
He could see the exhaustion creeping up on you in the break caused by his interruption.
"Something, huh?"
You nodded slowly,
"Okay, what's with the staring, kid?"
Your head cleared up.
"I'm trying to determine if you were enough of a nerd to understand what I'm about to say, or if you were too much of a cool popular kid to get it."
"And what's your verdict?"
"...have you ever played DnD?"
Bruce snorts and subsequently spits out a little of his drink.
"...Of course, who do you think I am?"
You rolled your eyes.
"Okay, whatever. You know how I've been putting off my dissertation?"
The science bros' eyebrows raise.
"Right, by the way, I've been putting off my particle physics dissertation. I'm only like, a year late, they've been pretty lenient with me, it's fine. Anyway. So. I've been thinking about radiant damage lately, and by that I mean I've been looking into optics, which naturally led to how magnifying glasses can catch ants on fire, which then brought up Archimedes' death ray, and solar radiation, and photons functioning as both particles and waves, which then led to an interesting question about if radiant particle damage could be considered blunt damage as well as magic and burning damage, which threw me off on a tangent about heat and sunburns and sunscreen and UV light and skin cancer, (melting, mutating, proteins denaturing), and how radia/nt damage could functionally be radia/tion damage, which is then a little fucked when you think of radiant damage being most commonly associated with smiting, which typically relates to holy righteousness..."
You trailed off again.
"And then I was thinking, wouldn't any really bright laser also be radiant damage? So obviously then I wanted to do a double-slit experiment because I think they're cool, but of course I didn't want to do an easy one, so I pulled up the holographic room record of when you lost your mind on heavy metal poisoning and synthesized an element, so I could copy it, you know, shoot shit, and see what happens."
Tony took a few moments to process and look at you, so you stared back, blinking erratically to keep your eyes from drying out after so long being open.
"You know, I have an old paper I think you might find helpful—" Bruce floated off to his side of the lab to hunt for the aforementioned science. Tony just stared and blinked back at you until he ultimately clapped his hands and rubbed them together.
"Yeah okay, so what do you need me to do?"