Title: Satisfaction
Fandom: MCU / Superior Iron Man
Rating: Explicit
Length: ~3400 words
Content notes: none apply
Author notes: this is an AU version of MCU events that mixes MCU stuff with Marvel 616 Superior Iron Man. Peter is slightly older in this universe and didn't meet Tony during the events of CA:CW. It's also written to fit 5 bingo cards and a this-or-that challenge. The kinks/options in question are: touching or being touched, "How's that feel, sweetheart?", bathing, prostate milking, masturbation, demon Tony
Summary: Tony has something new planned for he and Peter for the evening, and he's brought a guest.

AO3 link: here

"What is that?" Peter asked, pointing to the painting sitting on the desk, leaned against the wall.

"Are you sneering at my painting?" Tony asked, motioning to the piece of art. "You don't like it?"

"I didn't make any comment at all. I asked what it was. It's just one of those things, doesn't really seem like – you."

Tony looked at the painting, then back to Peter. "It's not really."

"Then why do you have it?"

"I took it as payment."

Peter turned, studying the painting again. "So, you don't really like it, but you took it as payment? Wait, nevermind. Who did you take a painting of you as a demon from?"

Tony snorted as he turned to head to the lab. "Beck. Dumbass couldn't even commission a decent painting. The thing is fucking hideous. But it amused me to take it from him." He snorted and shook his head. "Come on." He didn't wait to see if Peter was following. He knew he would.

He wasn't really interested in the lab, but that's where his set-up was for today. He had a bench in the open space at one side of the room. In front of that, he'd placed a chair. Simple, but effective.

When Peter came in, Tony was pleased to see that he'd already put on his collar. It was a supple strip of red leather. He'd let Peter choose it himself. Tony had been impressed. It was a good choice. And the red looked really good on Peter.

"Come here. I'd like you to strip and kneel on the bench, please," Tony instructed while he made some additional preparations. Though, he kept his eyes on Peter as well to watch while he wiggled out of his clothes.

Satisfied with everything, Tony stepped over to where Peter was kneeling beautifully for him. "Do you mind if we have a guest tonight? It's entirely fine if not."

Head bowed in the proper position, Peter answered, "That would depend on who the guest is, sir."

Tony brushed his fingers through Peter's hair. "It's Mistress Nat." Fingers ghosted over the side of Peter's face to settle at his chin and lift his head.

"I would be alright with her, sir."

"Good. I'd hoped that was the case. Are there any things you'd like to not do tonight that we normally do?"

Peter shook his head. "No. Everything usually on the table is currently on the table, sir."

"Excellent." He dusted a kiss to Peter's forehead. "Mistress Nat, do be a dear and join us."

The woman strode out in a pair of fierce black boots and a curve-hugging black leather corset that showcased her breasts. Between those items was a very small pair of black panties that likely wouldn't stay on long. "Is he ready?"

"He's ready to begin. He'll need prep-work before you get started." He leaned over to kiss Mistress Nat on the mouth without smearing her lipstick. "Now," he began, "Peter, please lower to all fours."

As Peter did so, Tony trailed his hands over the young man's back, reaching his fingers around to dust across his nipples. He got a soft little sound of pleasure for his trouble.

Tony kept his hands smoothing over Peter's skin while Mistress Nat gathered her supplies. Lightly, she smacked a hand against Peter's ass. "I'm going to apply lube and then we'll get started."

Tony took a quick glance to Peter's face. He grinned, knowing what Peter was thinking was going to happen. Not this time. "Be very good, Pete."

"I'm always good, sir," Peter responded.

"Now, now, we both know that's not true," Tony said. Peter flashed him a bratty grin. In response, Tony pinched Peter's nipple, earning himself a sharp squeak from his submissive.

Mistress Nat scoffed. "You boys are making this far more difficult than it needs to be."

Peter apologized. Tony did not.

Instead, Tony watched Mistress Nat snap on a nitrile glove and coat two fingers with lube. She grinned playfully at him, then rubbed those fingers against Peter's hole.

Peter's hips twitched slightly as Mistress Nat continued touching him. He only jumped a little when she pressed both fingers inside.

Tony got a nod from Mistress Nat that she was ready to begin. He nodded in return and stepped back a few inches to watch Peter's face.

Mistress Nat knew exactly how to work her fingers to get what she wanted. It didn't take long before Peter gasped, his fingers gripping the edge of the bench.

"There we go. Tony, can you fetch the glass please."

Typically, he would scold her for trying to make him her errand boy, but he was all-in on this little demonstration, so he snagged the receptacle in question and slotted it beneath Peter's slowly growing cock.

"He's so pretty when his muscles tense up like that, isn't he?" Tony asked idly, fingers grazing over said tensed muscles.

Mistress Nat grinned back at him, still working her magic. "How's that feel, sweetheart?" she asked Peter, her free hand dragging nails along the back of the sub's thigh and up over his back.

Peter whimpered lightly before he said, "It's good, Mistress Nat. Thank you."

"So polite, this one. I like him."

"You said that last time too, I believe." Tony brushed his hand up over Peter's hair. "How long do you think he'll last for you, Nat?"

Mistress Nat shrugged lightly. "I don't know. This is new for him, right?" Tony nodded once. "With his enhancements, he might go longer than most.

"Well, I guess I'll have to sit here," Tony walked to the chair he'd placed earlier, turned and settled into it, "and watch the show. Eyes on me, Pete."

Peter's head snapped up, eyes going wider as he forced himself to look at Tony.

"Is that it?" Mistress Nat asked. "I'm doing all the work and you're just going to sit there?"

Tony laughed. "Of course not. I'm going to torture Peter with my cock."

"Honey, even I know it's not that long."

Tony was not amused and he let Mistress Nat see that in his face. All she did was Cheshire cat grin back at him. Bitch.

It didn't matter. He was settled nicely in his comfortable chair and had his plan in place. He shifted his hips forward and began to unfasten his pants.

The soft little whimper he heard from Peter was delicious. So, Tony kept going. Undoing his pants the rest of the way, then pushing them down off his hips.

"Sir," Peter whined, though it was tinged with a moan as Mistress Nat continued her ministrations.

Tony rubbed his hand over his hardening cock through his underwear – which he was wearing specifically for this tease. "You want this, don't you?" He looked up and waited for Peter to nod. "Well, you have to earn it." And he kept rubbing his hand over himself.

"You are a horrible tease," Mistress Nat said. Tony could tell she punctuated that with a little extra pressure from her fingers because Peter all but yelped in surprise.

"I'm actually an excellent tease. It's only horrible for everyone else," Tony countered as he pushed his pants down to his knees, giving Peter an excellent view of his hardened cock pressing against the fabric.

Peter whimpered again.

"Was that you or me?" Tony asked Mistress Nat.

She grinned wickedly at him over Peter's back. "A little bit of both, I think." Then she leaned down to check the glass beneath him. "Is he trying to resist me?"

Tony frowned. "You're not fighting Mistress Nat are you, Pete?" he asked.

Peter shook his head and grunted something that sounded like the word 'no'. He followed that with a gasp, fingers clenching the bench again. "Wh-what – mmm – why… why can't I… I mean -" he groaned a moment. "-can I…"

"No, pet. Not right now. I know what you want. We'll get to that later. Right now, you need to give Mistress Nat what she wants."

Mistress Nat dragged her nails down Peter's back. "You know what that is, right?" she asked. When Peter shook his head, she explained, "I want you to fill this glass, but I'm not going to touch your cock."

"Uh – o-kay." Peter didn't seem convinced. But his slender hips jumped when Mistress Nat pressed her fingers downward. Tony had watched her do this before, so he knew her little tricks.

"All you have to do is fill the glass, Peter," Tony said. He rubbed at his own erection again.

Mistress Nat sighed somewhat dramatically. "Are you gonna whip that thing out or not?"

"In my own time." He nudged his shoes off, one at a time. Pushed his pants the rest of the way off. Another whimper from Peter drew his attention. He loved the way his submissive wanted to taste him. The way he worked to stay in position and do what he was told.

Of course, the little brat didn't always do that. But those moments were some of the most fun parts. Even if he was irritated with his sub, he would issue the punishment, and they'd walk through it afterward. Sometimes Peter would be hard-headed and have to go through the whole thing again. But, he was learning fast.

Holding back wasn't easy for himself either. It was a challenge. He wanted to stand up and thrust his dick into Peter's mouth. To feel that wet heat as Peter worked to get him off. But that wasn't the scene tonight.

Tonight was focused on making Peter watch. Tony unbuttoned his shirt, exposing his chest for Peter to see. Then skimmed a hand down over his stomach, back to his still confined cock.

Mistress Nat shook her head. "He's going to vibrate right off the table, Tony."

"Strap him in if you have to." He kept rubbing himself through his underwear. Slowly, he drew his cock free, watching Peter's face the whole time. Those deep brown eyes were as laser-focused on Tony as they could be under the circumstances.

Tony tilted his head while reaching for the bottle of lube on a nearby table. "It's all yours once you finish what you've been asked to do, Peter," he said dribbling lube into his hand.

Peter whimpered again when Tony took himself in hand and began to slowly stroke, first up, then all the way back down. Mistress Nat touched Peter just right again and his eyes rolled back.

"Come now, Peter. Don't defy Mistress Nat. She may not be as forgiving as I am. Besides," he leaned back in his chair, knees spread as wide as they would go, pressing his thighs into the arms of the chair, "I wanna see you do it. So, do it for me if nothing else, Peter."

Apparently that was enough. Peter let out a gasp and his hips twitched. Tony lifted a knowing eyebrow and tilted his head, watching.

"Not bad, sweetie," Mistress Nat cooed, fingers still working inside Peter's hole. "Still need a little more."

Peter made a disappointed noise, then rocked back against Mistress Nat's fingers. That made her laugh and ruffle Peter's hair.

Tony watched Peter. The young man licked at his lips and took a long slow breath as though he was trying to relax. When Peter opened his eyes, he looked up, right at Tony, and whimpered again.

Grinning wicked and sly, Tony stroked his cock. "I told you, finish your task and it's all yours." Another slow stroke. Entirely designed to tease his submissive.

Peter had done amazingly well with his training. He'd learned so much so damned fast. Tony was impressed. He knew Peter would do well with this current scene as a result. Tony would've done the work himself, but he really wanted to sit and watch how Peter handled it.

Enter Mistress Nat. Tony had called her because Peter was already familiar with her play style from their club experience. And Peter seemed to like her well enough. Tony didn't want someone who would make his submissive uncomfortable.

He grinned a bit more when Peter groaned again. He could see the muscles in Peter's arms starting to shake from the effort of both staying up and trying not to rock back more than he already was, since Mistress Nat kept making him stop moving.

"What are you thinking, Mistress Nat? One more time and he'll be good?" Tony asked.

She pursed her lips. "Maybe twice. That first one was good, but… diminishing returns."

"He can do it," Tony said. "Almost there, Peter."

Mistress Nat kept milking Peter's prostate and Tony kept stroking himself as he watched. Mistress Nat had been right about Peter needing two more prostate orgasms to fill the glass she'd set up. By the time she was done working on him, Peter's muscles were shaky and his cock was so hard it looked painful.

Truthfully, Tony was getting near the edges of his own willpower and was better than okay with Peter being released from Mistress Nat's ministrations. He waved for his submissive to crawl across the floor to him.

He grinned down at Peter kneeling at his feet with his mouth open and ready. Tony waved his fingers. "Come up here, pet." He waited for Peter to stand and move forward. Tony nudged the young man's hips to turn him around, then draw him back to slowly settle onto his straining cock. "Mistress Nat should get a show too, don't you think?" he asked.

Peter nodded slowly. "I think she should get to jerk me off, sir."

"Oh, you think she would want to do that for you? What makes you think you've earned such a thing?" Tony asked as he rocked his hips downward to drag his cock most of the way out of Peter's ass. "Do you think you've behaved well enough to earn an orgasm from her?" He thrust his cock back in, Peter's shaking moan music to his ears.

"Um -" Peter swallowed, "maybe. I um – I did what she asked." His voice was caught in his throat and pleading.

"I suppose you did. But you haven't done anything for her."

Peter licked his lips. "Does – does she want me to?"

"You should ask her, pet." Tony licked a finger and used it to circle one of Peter's nipples. The young man gasped and shivered in his lap.

Peter cleared his throat. "Mistress Nat, would you – I mean, is there anything you'd like me to – um – to do for you tonight?"

Mistress Nat's head tipped ever-so-slightly to one side, her red hair sliding over half her face. "Yes. You can sit there getting fucked thoroughly until I say you can come."

Though Peter whimpered piteously, he didn't object. Rather, he stayed balanced on his knees while Tony fucked him slow and steady.

"Except," Mistress Nat began, "I wonder – would Mr. Stark be opposed to me riding that very hard cock of yours while he fucks you? Assuming you, yourself, don't object, sweetie."

Tony wasn't typically one for sharing, but he knew Mistress Nat wasn't angling for his toys. "Would you like for her to ride you, pet? Would you like to feel your cock sliding into her pussy? Feel it when it pulses around you when she comes?"

Peter whimpered again, his hands gripped tightly at the arms of the chair. "I think that's a 'yes', don't you?" Mistress Nat asked, gliding to her feet to stride across the room, hips swaying side to side as she did. She drew a finger along the edge of Peter's jaw. "I need you to actually say 'yes', sweetie. Use your words."

Another frustrated sound. "Y-yes. Yes, I'm okay with it. Sir?"

Tony nipped at Peter's ear. "Good boy. Yes, Mistress Nat, you may use his cock for your own pleasure. And, you can tell him when he can come." A pointed look. "And he does get to. He's done well tonight."

Mistress Nat rolled her eyes over-dramatically. "Fine. I'll let him come," she said as she braced her hands on Peter's shoulders to lift herself up enough to position her pussy over Peter's cock. "You're going to enjoy this," she told him, then lowered herself to fully take him in one stroke.

Peter grit his teeth and his legs tensed against the sudden and immediate glide of Mistress Nat's slick pussy on his cock. "Fuck," he grunted.

"Oh, sweetie, I absolutely will. Don't worry," she said and started to lift and lower her body, fucking herself swiftly on Peter's cock.

Tony braced his feet on the floor and matched her pace, thrusting into Peter's ass as Mistress Nat came down fully on his cock, then drawing back as Mistress Nat lifted herself nearly all the way off. Their hips slammed against Peter at the same time, sandwiching him between them.

Peter braced himself on the arms of the chair, head tipped back against Tony's shoulder. The loveliest sounds were rumbling from his throat as he was fucked and used. Frustrated whimpers indicating he was verging on the edge of coming without permission. His frustration didn't seem to be affecting Mistress Nat at all. Not in any way that would push her toward mercy.

Tony grunted in Peter's ear as his cock twitched one last time before spilling his load deep inside the young submissive's ass. He felt Peter shiver against him, legs tight, hips twitching, toes clenching with the need to orgasm.

"Please -" Peter beg-whimper-hissed, eyes tightly closed in concentration.

Tony slid his hand between Peter and Mistress Nat in order to press his thumb against the woman's clit. Rubbing tight little circles until she swore and bucked against Peter as she came, her fingernails digging into the flesh of Peter's shoulder.

"Ah - fuck - he can come. Fuck, Peter, come," she growled, slamming her hips down one more time to seat him fully inside her.

Peter screamed as his orgasm rolled over him, his hips bucking wildly, like he wanted to escape. Tony held Mistress Nat in place so Peter wouldn't throw her off. She had her own hands clamped onto Tony's biceps.

After Peter finished and all but melted into a puddle in Tony's lap, Tony arched his eyebrows as Mistress Nat. "Didn't tell him about that part, huh?"

"I knew I forgot something," she said innocently. She gave it a couple beats, then gingerly lifted herself up and off of Peter, then off the chair. "Need me to help get him upstairs for you?"

Tony shook his head. "I got it. But, did you need anything before I tend to him?"

She smiled at him. "Nah. I'm gonna go curl up with Bucky. He likes sloppy seconds."

Tony nodded. "Find me if you need me." Then he watched her leave, taking the glass Peter had filled for her earlier with her. Lifting Peter enough to let himself slip free of Peter's ass, he then shifted the young man into his arms and got to his feet. He carried Peter up to the big en suite of his bedroom and drew a hot bath.

Peter was groggy, but awake, and leaning heavily against Tony as the tub filled.

"How're you feeling?" Tony asked.

There was a soft snort of a laugh. "Like I sprinted a marathon backwards. I am gonna be sore tomorrow."

Tony grinned lightly. "Hope not. Let's get you cleaned up, then I'll turn on the jets for a bit before we hop out and go to bed."

He helped Peter step over the lip of the tub and slide into the water. As he was stepping in behind him, Peter asked, "Am I sleeping on the floor again?"

Settling in, tugging Peter up against his chest, Tony brushed a hand over his hair. "Only if that's where you prefer. There's plenty of room on the bed." He picked up a soft cloth, dipped it into the water, and used it to wash across Peter's skin, getting the sweat and sex off.

Peter rested his head against Tony. "Was I good enough to earn the bed?"

"Of course." He brushed a kiss against Peter's hair. "It's rare that you aren't, pet. You know that."

"Mmmhmm," Peter hummed. "But I like to hear it."

"If I didn't like you being a brat…" Tony mock-grumbled as he turned on the massaging jets in the tub.