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One Alpha Too Many

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Gabriel jumped at the crash from the living room, but Castiel only scowled.

“You can see what I’m talking about.”

Another crash, followed by a high pitched shriek. Sam came skidding around the corner, Dean hot on his heels, a predatory grin across his handsome features.

Sam crashed to his knees, sliding the last two feet to Castiel’s chair. He knelt beside the angel imploringly, his head pushing at Castiel’s thigh as he glanced nervously back at Dean. Dean made an obscene gesture with his hips, drawing attention to the bulge barely hidden by his loose shorts. Sam gazed at Castiel with wide eyes.

“Poor thing,” Gabriel remarked.

“He’s earned it. I couldn’t tell you the number of times he’s tried to mount Dean in his sleep. Bet you anything that’s how all this started.”

Sam glanced down, chastised. Dean looked smug, then began edging closer. Sam growled. Castiel sighed.

“You can see I don’t really have a choice. With two alphas in the house it’s just a matter of time until their fighting starts to get serious.”

Gabe shrugged, looking at the human kneeling beside his brother’s chair.

“Still seems kinda mean.”

“I’m sure he’ll get used to it,” Castiel said, running his fingers through Sam’s hair and scratching at the back of his neck. Sam looked curiously between the two of them, suddenly interested in the conversation. “In any case, imagine the pups they’d have.”

The blood visibly drained out of Sam’s face and he whined, looking up at Castiel, searching his face for some other meaning.

“Well that’s what you get for always fighting,” Castiel told him, stroking his long hair back. “The two of you would get along much better if you were an omega.”

Sam recoiled, backing away from Castiel on all fours, and Gabe rolled his eyes.

“Shouldn’t have told him, Cas. Now he’s going to be all skittish and disobedient until it’s over.”

Sam rose to his feet, panic obvious in his movements, but before he could get his balance Dean had tackled him and the two of them were rolling on the floor, snapping and biting and growling. It took both angels to separate them, grabbing them by the collars and yanking them apart. Sam writhed and squirmed against Castiel’s grasp, but the angel held him easily. He kicked and elbowed and Castiel grunted as he forced the alpha to his knees.

“That’s it, you’re getting the crate until your appointment.”


Sam hated the crate.

It had once been a spare bathroom, but it had been retrofitted with a barred door and window to accommodate long-term human confinement. He had just enough room to stalk back and forth.

It didn’t help that Dean had taken up a position just outside the door. He sat and watched and made sympathetic faces at Sam, especially when Castiel came by with food or toys. He’d been giving Sam a lot of those, mostly to make up for the time he’d had to spend locked up. After all, Cas had explained, he was the one who hadn’t thought through the plan of getting another alpha. No reason to punish Sam for being what he was.

Sam fiddled with them, little puzzles and games to keep him occupied until-

He didn’t want to think about it.

He glanced out the door at Dean. His hackles rose just having the other alpha so close, from the knowledge that Sam was on Dean’s territory. He needed a fight, needed to show Castiel that he wasn’t the omega here, wasn’t the bitch, he could beat Dean in a fight if Cas would let him try for real-

Cas was not going to let him try.

The day of his vet appointment got closer and closer and Dean spent more and more time camped outside the door. Sam didn’t want to look at him. He’d never spent time- any time, really, thinking about what he’d want in an alpha, but if he had: the answer wouldn’t be ‘Dean.’ He was immature and he smelled weird. Even under the general off putting alpha-ness of him, he still smelled weird.

Sam growled at him.

Dean left, and Sam barely had time to get lonely before he was back. Dean pressed right up against the bars, reaching through with his hand extended, palm up.

He was holding a cookie.

It quickly became obvious that Sam was not going to take it, so he set it on the floor and backed away.

Sam scowled at him, but he ate the cookie.


The day before he went to the vet, Sam wasn’t allowed to eat. Castiel explained that it had to do with the anesthesia, and promised Sam a big dinner when he came home. Sam wasn’t listening. He felt sick to his stomach and spent most of the day curled up on the plush pet bed, his hands cupping his balls protectively, like he thought Castiel was going to come take them while he slept.

His stomach gurgled and he glanced at the glass of water beside the sink. He didn’t think he could do it. He’d puke it up, he was sure.

He didn’t want to be an omega.

Every time he closed his eyes he saw himself swollen with pups, imagined how badly it would hurt to deliver them, and he felt sick with fear. It was easier to focus on the nebulous future, rather than the certainty of the next day.

Sam had never seen anyone who’d been cut, but he’d heard stories about clamps and bands and pain so intense that pets’ throats bled from the screaming.

He whimpered and curled tighter around himself. Dean whined from his place near the door, sensing Sam’s distress and responding. Sam didn’t even have the energy to snap at him, knowing in a couple weeks Dean would be knotting him and he’d probably be loving it. He shivered.


He couldn’t sleep through the night. He kept dreaming that he was trying to escape, running or hiding, terrified that they’d catch him and terrified that he’d run.

Under normal circumstances, he’d resolve the insomnia by touching himself, but that wasn’t an option here. It didn’t matter that he’d probably never get another chance to come as an alpha- it just wasn’t going to happen.

He froze, trying to remember if omegas were able to come, outside of their heats. He couldn’t remember. Sam’s throat tightened and his breath came in small, quiet sobs. He wiped at his eyes, not wanting the tears to soak into his pillow.


Cas came first thing in the morning, unlatching the door so Sam could come out on his own. Dean was nowhere to be seen as Sam hesitantly walked across the living room. Cas sat on the couch, patting the seat next to him, and Sam curled up obediently on the cushion, his head resting on Cas’s lap. Cas took his hand, twining their fingers together, while his other hand stroked Sam’s back.

“We have to leave soon,” Castiel said quietly. Sam tensed, but Castiel held his hand tight, urging him to still. “I’m going to be there the whole time. I want you to try to be good for me, alright?”

Sam whimpered, and he felt tears rising to his eyes again.

“Shhh,” Cas crooned, wiping them away. “None of that. You’re going to be just fine.”

He looked Sam over lovingly, pushing the alpha’s hair out of his eyes so he could see better.

“My beautiful boy. You’re going to be such a lovely omega.”

Sam whined, pulling back, but Cas caught him by the collar.

“I’d like to do this without muzzling you. Do you think that’s going to be possible, Sam?”

Sam bolted. He couldn’t help it. He was too frightened, too desperate, and the thought of the muzzle was too much. It stripped away the last of his self-restraint and he ran.

Where he thought he was running to, he couldn’t have told you. In any case, Castiel was ready for it and was right behind him, easily faster and stronger.

Sam struggled against the muzzle as Cas fitted it over his face, the soft rubber bit sliding between his teeth. The muzzle was leather, made for him custom, and it fit tightly over the lower half of his face, buckling behind his neck.

Cas released him and he clawed at it, fingers tearing desperately at the buckles, but Cas was ready for that, too.

The binders slid easily over Sam’s arms and Cas pulled the laces tight, pulling Sam’s forearms together behind him. Sam screamed and fought but Cas kept him down with a knee on the small of his back.

The angel tied off the laces and hauled Sam to his feet, throwing the squirming human over his shoulder in an improvised fireman’s carry. Somewhere else in the house, Dean was kicking up a racket as well- Sam realized that Cas much have closed him off somewhere else. Sam howled into the muzzle. It wasn’t fair, he wasn’t the one who should be doing this, it wasn’t fair, it wasn’t fair-


Cas’s van was set up to carry pets safely in the back, and that’s where he deposited Sam for the duration of the ride. Sam spent the time leaning against the sidewall, staring out the window, sick and miserable. His shoulders and jaw were starting to ache, and he knew he wasn’t even into the worst of it yet. Cas was talking to him from the driver’s seat, telling him it would be fine. His voice was calming, but Sam was exhausted and hungry. He pulled his legs up against his body and tried not to panic.


Castiel liked his vet. He’d been bringing Dean here for years, to get his annual checkup and shots, and the place had always seemed homey and calming to him.

Unfortunately it didn’t seem to be having the same effect on Sam; the alpha whimpered and trembled and protested all the way to the door. Cas kept a hand wrapped firmly around his collar, shrugging apologetically to the other angels in the waiting room as he manhandled his human through the door.

“You must be the eight ‘o clock,” the woman at the desk chirped when she saw him. “Castiel? And this must be Sam.”

She gave the human a wide smile.

“I’d give you a treat, but no food before anesthesia, right? Well. When you come out, I promise.”

She handed Castiel a clipboard and he took a seat in one of the office seats.

“Sam, heel,” he said slowly, and the alpha obediently dropped to his knees, resting his head against Cas’s thigh. Cas stroked him gently while he looked over the paperwork. Sam was trembling and Cas couldn’t seem to get him to stop.

“Poor thing,” Castiel remarked. “You’re trying so hard to be good.”

The angel next to him hummed in sympathy.

“Big rowdy guy like that, having him fixed is a good choice.” She gave Sam a little wave. Her pet, a pretty omega woman, gave Sam a shy smile.

“I’ve got two of them,” Cas explained. “So there’s really no choice.”

Sam whined into the muzzle.

“He doesn’t get along well with the other alpha?”

“That would be an understatement,” Castiel remarked, turning his attention back to his clipboard. He marked off a few boxes, then signed the bottom.

A minute later, someone called his name.


The nurse who lead them into the examination room was absolutely smitten with Sam, ruffling his hair and playfully snapping the waistband of his shorts. Since it was his first visit she marked down his height and weight, remarking on his unusual size, for a pet. Castiel shrugged.

“I guess you could say I inherited him. Normally I wouldn’t get a pet larger than I am.”

“Well, we’re glad you did!” the nurse exclaimed, beaming at Sam. She took a quick listen to his heart and lungs, remarking that everything sounded fine and giggling when his stomach rumbled.

“Don’t worry cutie, we’ll have you all fixed up and you can go have a big breakfast, k?” She brought them to a door, knocking twice and then unlocking it to reveal a clean white room. There was a table in the center, padded and fitted with restraints, and when Sam saw it he backpedaled hard, directly into Castiel’s waiting arms.

“I was afraid of that,” Cas said, wrapping his arms around Sam’s chest and holding tight.

“Oh, that’s alright, lots of pets get nervous when they realize what’s happening.” The nurse hooked two fingers through Sam’s collar, dragging him forward across the room. He fought against her, but a human was no match for an angel, as a general rule.

“Here we go, Sam, over the table, just like this.” Her voice was gentle but her hands were like marble, forcing Sam down until his bare chest was pressed against the tabletop. She clipped his collar to a metal ring, making sure that Sam couldn’t rise up off the table.

Sam was breathing hard, making high little keening sounds in the back of his throat, and Cas shushed him, stroking him gently as the nurse secured his ankles to the table legs and laid wide straps across his back.

“Can you give him something to calm him down a little bit? He’s been panicked all morning.”

“Of course. Let me just do one more thing, and then I can get the dosage worked out right.”

Cas watched impassively as she took Sam’s temperature, chuckling at his startled yelp. She marked it down in his file, and then went out into the hall, returning with a syringe full of a pale blue fluid. This she injected into Sam’s bicep.

“This is a mild paralytic, it should help relax him and keep him from fidgeting. It should be kicking in right around the time the vet- oh! Speak of the devil!”

The vet was a large angel with a broad grin, and he shook Cas’s hand before turning to Sam.

“And this is our patient, I hope,” he joked. He rubbed his hand once up the small of Sam’s back, then reached between his legs to where his cock and balls hung helplessly. Sam moaned as the angel rolled them around in his hand, feeling for abnormalities.

“And you’re having him neutered today?” The vet asked, glancing at his chart. “He’s a little old for it. He might not have a full-omega temperament when he’s done, just because of how long he’s been an alpha.”

“He’s not bad tempered, he’s just not getting along with my other alpha. They’re always trying to establish dominance over each other and they’re so large, I’m afraid they’ll hurt each other.”

“Hmm,” the vet mused. His fingers idly scratched the side of Sam’s hip as he thought. “Well, they’d be much less likely to fight if he were an omega, but if you’re really looking to solve the problem for good, you could have him emasculated instead of just castrated.” He reached between Sam’s legs, lifting his scrotum out of the way until his penis hung exposed. “He won’t bother trying to mount the other alpha if he’s got nothing to mount with. You looking to breed him?”

“I was thinking about it,” Cas admitted. He stroked Sam’s hair out of his face. The pet was breathing hard and deep, and tears were leaking out of his eyes. Fortunately, the paralytic seemed to be taking the fight out of him.

Cas wiped the tears away. It was a shame Sam couldn’t understand that they were just trying to help, and he’d be much happier after this. Pets weren’t as smart as angels, and they tended to focus on the fear of short-term pain.

“We get a lot of owners in here wanting their breeders emasculated. It helps arouse the studs, keeps ‘em from getting confused and trying to start fights. Makes ‘em calmer, too. They start thinking with their upstairs brain, you know?”

“Mmm.” Castiel considered, looking at the tense body of his pet. “He’s had a very difficult time with all of this. If the castration isn’t sufficient to break up the fighting, I don’t want to put him through the stress of another procedure. Still…”

Sam’s hands were forming fists inside their bonds, his fingers white, his nails digging crescents into his palms. A cold sweat had broken out along his back, and Castiel glanced to the nurse.

“Do you think we should put him out for this?”

She shook her head.

“It’s usually unnecessary, the paralytic will keep him from injuring himself and the general anesthesia carries more risks. We try not to do it, if we can help it.”

“I just wish he could understand that this is for his own good.”

She shook her head with a little smile.

“They never do.”

“Would he still be able to climax? If we removed the cock and balls both.”

“Probably not. Some omegas are able to climax from penetration, but they usually require the penis to at least be present.” The vet frowned. “Is this something you’re concerned with?”

“A little,” Castiel admitted. “I’ll admit to anthropomorphizing them, but I do occasionally enjoy using omegas for my own purposes and I feel better if they’re enjoying themselves.” He shrugged, but the vet didn’t seem phased.

“Well then, you should probably leave at least the cock for now. We’ll just remove the balls and send him home.”

Sam whimpered, his chest rolling against the table in what was probably an attempt to thrash. Castiel rubbed his back, trying to calm him as the nurse wiped his balls down with an alcohol swab. She left the room and came back with a syringe of painkiller, which she injected into various areas surrounding the scrotum.

Sam wouldn’t stop whining and he was crying freely now, making Castiel nervous about the muzzle. Sam’s nose was running and his face was red, but he seemed to be breathing okay around the bit, and so Castiel left it alone.

He couldn’t deny a certain amount of curiosity, and so when the vet pulled the stool between Sam’s legs, Castiel went to look.

Sam’s balls were pulled high and tight with fear, but the painkillers were loosening the muscles. Before long, they hung loose and helpless between his bound thighs. The vet selected a sharp scalpel from a tray of tools.

“Here goes nothing,” he remarked to Castiel.

The vet made a small horizontal incision across the top of the scrotum, then pulled it open, revealing the cords. These he clamped with small alligator clips.

“There’s a lot of blood going through here, so the clips stop him from bleeding too much,” the vet explained, and Cas nodded.

The vet took a pair of short-bladed scissors and cut cleanly through each cord. The vet then widened the incision, moving horizontally around the entire scrotum, until it was just hanging by a thread of flesh. The doctor cupped it in his hand and cut the last thread, leaving Sam’s groin bloody and bare.

“That’s it?”

“That’s it,” the vet confirmed. “We give the clips a couple more minutes to make sure the blood has clotted, and then we stitch him up and send him home.”

“See, that wasn’t so bad,” Castiel told Sam, leaning over so he could see the pet’s face. Sam wouldn’t look at him. His eyes were clenched shut. Castiel could see him biting at the muzzle. “Hey. None of that. We’ll get you home and get you some food and you and Dean can get re-acquainted, hmm?”

Sam’s breath hitched at the mention of the alpha, but he kept his eyes closed.

When Cas sat back, the vet was removing the clips, and true to his prediction, there was very little blood. He pulled the edges of the remaining skin together and stitched them easily, leaving an incision only a few inches long.

“You’ll need to make sure he doesn’t pick at these,” the nurse said, providing gauze and alcohol swabs as the vet requested them. “Keep an eye on them for signs of infection. We’re going to give him a dose of antibiotics before he leaves, which should keep it from having any trouble, but if you see anything unusual, let us know.”

“I think he can be trusted to leave them alone. He’s very smart, for a human.”

Cas pushed Sam’s hair out of his eyes, smiling down at his pet’s face. “It’s one of the reasons I agreed to adopt him.”

Sam whimpered. Cas looked back to the vet.

“What about the other one? When will it be safe to let them… interact? Normally?”

“Couple of days, maybe. You can let them play as long as the other isn’t too rough with him. He’ll go into his first heat within the week- if you notice his hole getting wet, then it’s safe to mount him.”

The vet taped a thick bandage over Sam’s groin and then stood, pulling his gloves off and tossing them into the garbage.

“The lady at the front can get you all set up for a follow-up appointment, so unless you have any further questions…?”

Cas shook his head.

“I don’t think so.”


Sam lay weakly on the table as Cas removed his restraints. He felt weak, his muscles responded slowly to his commands. He felt Cas removing his arm binders, but he didn’t bother to pull at them or try to wrench free. Everything he’d been afraid of had already happened. There was no point struggling now.

He crossed his arms under his face, leaning forward, basically lying on the table. Cas’s fingers were deft, working the buckles on the back of the muzzle.

“Open, Sam,” Cas said gently, and Sam did, letting him remove the bit. Cas stroked his face, rubbing at the red places the muzzle had left on his skin.

“You did very well. I don’t blame you for being frightened. You’ll probably be sore for a few days, and then everything will be better. You’ll see.”

Sam shuddered. Cas was talking about a heat. As soon as Sam was healed, he’d be taking Dean’s knot, getting all bred up-

He growled involuntarily and Cas shushed him.

“None of that.”

His fingers ghosted between Sam’s legs, to where his cock hung soft. Cas cupped it, hefted it, wrapped his fingers around it. Sam whimpered. The sensation of Castiel’s touch was dulled, like he could tell that there was something more intense there, beyond his ability to feel.

“You have such a lovely cock,” Cas was telling him, and the angels body was draped over his, so Cas’s lips were at his ear. “I would so love it if you came for me. I suspect I’ll enjoy watching you come on Dean’s knot. But you heard the vet. If you aren’t going to stop fighting, you know what I’ll have to do, don’t you?”

Sam’s face flushed red, as he remembered Castiel’s earlier deliberation. His heart beat faster and he whined gently.

“It’s not too late, Sam. Would it be easier for you if we did it all now? I can call them back, they’ll give you drugs to make you sleep, and when you wake up, you’ll be utterly smooth here, like a female. Would that make it less confusing for you?”

Sam shook his head, his throat burning and his eyes leaking tears again. He’d be good, he would, he could, but they couldn’t take his cock, please, don’t let them do it-

He realized he was pushing his face into the cup of Cas’s hand, mewling softly, but he couldn’t make himself stop. Couldn’t stop begging.

“It wouldn’t hurt any more, you’d be asleep for all of it. And the vet said that alphas who have it done tend to be calmer and have less stress regarding being bred. Don’t you think you’d feel better?”

Sam shook his head vehemently, whining his protests into Cas’s palm. The angel’s hand dropped from between his legs, and he almost cried with relief.

“Alright. But if you and Dean can’t get along we’ll be back here. I want you to understand that.”

Sam nodded vigorously, dropping bonelessly off the table to rest on his knees at Castiel’s side. He rubbed his face against Castiel’s thigh, and Cas smiled down at him, ruffling his hair.



The next few days passed far too quickly for Sam. Every morning, Castiel would order him to lie on the table so that his dressings could be removed and the stiches could be inspected. The incision healed quickly and without too much pain. The worst part was having Dean there, leaning in curiously to inspect the place where Sam had been cut. Sam’s face and chest burned red with mortification the first time Dean scented him, his cheek almost resting on Sam’s thigh, curious about the strange half-alpha, half-omega scent he was getting off Sam’s body.

Almost as soon as they’d gotten home, Dean had tried to mount him again and Sam had fled- not fought back, just fled. Cas produced a complicated looking metal thing that he’d gotten at the vet’s, and quickly locked the thing around Dean’s cock and balls. Dean had spent the following hour staring at himself and whining, while Sam sat on the sidelines, watching. As far as Sam could tell, the device was meant to prevent Dean’s cock from getting hard, which would keep Sam protected until the stitches healed.

The little cage went a long way toward improving relations between the two of them. Once the scent of alpha began to dissipate, Dean approached Sam much more casually, less aggressively, and Sam let him, knowing he was safe, for now. Dean approached him slowly and settled in next to him, nuzzling against him or scenting him and making a low purring noise deep in his throat.

Sam knew that Dean now thought of him as “his” omega, and while it was preferable to the incessant attacks he was subjected to as an alpha, it still set him slightly on edge. He’d wake up and Dean would be beside him, their bodies tangled together, Dean’s long arms resting easily across Sam’s hips or chest.

Dean wasn’t the slender omega that Sam had pictured, when he’d engaged in fantasies about that sort of thing. Lying in the dark, watching the rise and fall of Dean’s broad chest, he tried to imagine what mating him would be like. He stroked his soft cock, imaging himself on all fours, presenting to the alpha, being mounted and knotted.


He frowned, still looking at Dean, and this time he imagined lying on his back, Dean above him, stroking both their cocks in tandem, those green eyes gazing down at him.

It was a little better, but he still didn’t feel any reluctance to simply drop himself and go back to sleep.


He took to pulling at the stitches- not hard, just a little, trying to prolong the inevitable by making it appear that the incision was closing more slowly than it was. When he showered each day he’d plug the drain and kneel in the water, rubbing at the stitches until the scabs were dissolved and he could pull the edges of the skin apart. He wouldn’t stop until he saw red, new blood in the water. Then he’d get out, replace the bandage, and carry on like nothing had happened. Day by day, the stitches dissolved and pulled loose.

It hurt, but it wasn’t as bad as being bred- that he was sure of.

Tentatively he reached behind him, feeling the edges of his hole. The skin was softer than he expected. He rubbed a fingertip tenderly against the puckered skin, his face burning red when it made his cock begin to harden.

Within a few seconds, the tips of his fingers were slippery and wet. Sam swallowed hard. He was making slick. Which meant his heat was starting. Which meant he was out of time.

He cranked the water hotter, slathering a cloth in soap and scrubbing at his skin until it was pink and raw, trying to get the scent of omega off his body. He soaped two fingers, pushing them into his tight hole, pushing the suds into his body in the hopes of cleaning the scent off himself there, too.

He scrubbed at the place he’d been cut, too, but as hard as he tried, the skin wouldn’t separate. Even with his best efforts, the skin had healed shut.

He clenched his teeth, trying to keep the desperate whining in his throat instead of the steamy air of the bathroom. He needed more time, this couldn’t be happening already. He could put this off further, he was sure of it. He just needed to think of a way-

“Sam? I’m coming in.”

Castiel knew immediately what he was up to, he could see it in the angel’s eyes as he surveyed the scene- Sam standing frozen under the pounding water, staring back at him with wide hazel eyes. Castiel frowned.

“I think it’s time to get out now, Sam.”

Sam felt his eyes widening further, a wordless negative escaping him before he could stop it.

Castiel shut the water off and took Sam by the back of the neck, steering him across the bathroom until he was facing the mirror.

“Put your hands on the counter, Sam,” Cas said in a low voice, and Sam shook his head, crossing his arms and curling into himself. Castiel took his hands with a grip like iron, forcing him over until his fingers rested on the edge of the vanity.

“Stay,” Castiel told him, and it took everything Sam had, but he did. Shivers wracked his body as Castiel dried him off, going over his whole body with a plush towel, even squeezing the extra moisture out of his hair. Cas’s hands felt good, the angel was gentling him, but even still, Sam couldn’t stop shaking. Was Castiel going to do it just like this? Call for Dean and make sure Sam could see himself in the mirror as Dean took him?

Castiel hung the towel up and returned to Sam. He let one hand rest on Sam’s lower back, while the other delved between his legs, tracing over the skin where his balls had been. He quickly found Sam’s hole and pushed a finger inside, making an approving noise when he found the passage already slick and loose. Sam could scent himself in the air, omega heat and slick. He knew Cas could smell it too, and he hung his head. Tears gathered in his eyes but he didn’t dare let go of the counter to wipe them away.

“I don’t appreciate you trying to hide this from me,” Cas said, pushing a second finger into Sam’s hole. Sam’s breath caught, coming in hitched sobs as Cas’s fingers moved inside him. “I had something planned for this, but to be honest, I’m not sure you’ve earned it.”

A third finger joined the other two, and Sam felt his body accept it easily. It didn’t hurt- not the way it would have if he’d been an alpha.

“I’d like this to be good for you, Sam. Don’t you want this to be good? Want to be a good omega for me?”

He didn’t know. He made no response, just tightened his fingers on the vanity and didn’t look at himself in the mirror. Cas’s fingers withdrew and he slapped Sam across the ass, hard. Sam yelped.

“Focus, Sam. I know this is a transition for you. But it’s one you’re going to have to make. We can do this one of two ways. You can obey me and submit the way an omega is meant to, or-” And here he took hold of Sam’s chin, lifting it until he had no choice but to look at himself in the mirror. “Or I can go get the muzzle and the binders and you can do this utterly immobile. Is that what you prefer?”

Sam shook his head no, vigorously, because he didn’t want this to happen but he really didn’t want to be muzzled again. Cas watched him for a moment, then released his face.

“Follow me.”

Cas strode out into the living room, where Dean was laying on the carpet, playing with a toy.

“Dean, go to your room and wait for me.”

Dean glanced over at Cas, and almost instantly realized that Sam was behind him, naked and slick, the scent of omega coming off him in waves. He perked up immediately.

Dean,” Cas said in a warning tone. “Go to your room.”

Dean scowled, but rose to his feet and shuffled off. He passed a little too close to Sam, his hand reaching out and trailing across the omega’s belly. Sam stiffened and whined in protest, but neither Cas nor Dean reacted.

Cas pulled a chair out and settled into it, leaning back.

“Come here, Sam,” he said, beckoning to the naked omega. Sam crossed the room and settled to his knees at Cas’s feet. His cheek rested against Cas’s knee as he looked up at the angel. Cas stroked him gently.

“I’m going to be your first, Sam,” Castiel said quietly. “Omegas imprint on their first, and while Dean will be the one to father your pups, at the end of the day, I want you obedient and submissive to me. Not him. Do you understand?”

Sam didn’t look at him, just nodded. Cas’s jeans were rough under his cheek.

“Good boy. Now, I want you to put my cock in your mouth. Get it nice and wet.”

Sam glanced up, but there was nothing in Cas’s face but determination. The knot in Sam’s throat was so large, he didn’t think he could take Cas into his mouth if he wanted to. With trembling hands, he fumbled at Cas’s zipper, managing to get it down despite every cell in his brain screaming at him to run and hide.

Cas’s cock sprung free, hard and thick and red and Sam just stared at it in terror until Cas put a hand on the back of his head and guided him down. Sam screwed his eyes shut, feeling the velvet skin of Cas’s cock sliding over his tongue. Cas rocked into him slowly, the spongy head of his dick bumping against the back of his throat. Sam moaned, tears spilling from his eyes as Cas fucked his mouth, seemingly enjoying the sounds he made as he gagged on the length.

After what seemed like an eternity Cas took hold of his hair, pulling him firmly back. Sam sat back on his heels, looking up at Cas. His face was wet and tearstained, and Cas leaned forward, kissing his cheeks softly.

“That was very good. We’re going to get you used to doing that, but not today. Today I have something else I need you to do. Are you ready?”

Sam hesitated, then nodded, keeping his eyes downcast.

“Come up here, Sam. Facing me.”

Sam’s heart was hammering in his chest and he felt like he was going to be sick, but he stood woodenly. Cas pulled him forward by the hips, until he was standing with one leg on each side of Cas’s chair. Cas kept his hands on Sam’s hips, pulling him forward.

“I want you to fuck yourself on my cock, Sam.”

Sam whimpered, closing his eyes, not wanting to look at the angel. He couldn’t do this, Cas was going to have to tie him down, he couldn’t do it, he couldn’t do it, he couldn’t-

“Stay with me, Sam,” Cas murmured, and his hands were hot and steady on Sam’s trembling body. “You know how to do this, this is what omegas are for. Come on.”

The chair was high, Sam only had to drop a few inches before the head of Cas’s cock was pressing against his slick hole. And then he froze, his body tense with the exertion of holding himself there, but he couldn’t go further, he didn’t want this, didn’t want to be filling the room with the burnt-sugar smell of omega heat. He didn’t want to be slicking up for his owner’s cock, he didn’t want to be leaning forward, wrapping his arms around Castiel’s neck, their foreheads pressed together as Sam impaled himself in one rough drop, drawing in a breath and his eyes going wide at the feeling of suddenly being so full.

Cas’s hands were on his ass, cupping each cheek, and he squeezed once in appreciation. His voice was a little ragged and he let out a breath.

“That’s perfect, Sam. You’re perfect, so perfect for me.” He looked up into Sam’s eyes and there was a vague blue glow in his irises. “Back up, do that again. Fuck yourself on it.”

And Sam did, bracing himself against Castiel’s strong shoulders as he worked his hips up and down. Cas’s cock was huge, forcing him open, making a place for itself inside his tight virgin hole, and every thrust was making him whine and gasp.

He didn’t realize he was hard until Cas took hold of his cock, stroking it in rough pulls to match Sam’s rhythm. Sam looked down with a look of so much shock that Cas actually laughed.

“I told you I wanted this to be good for you. Did you think you wouldn’t be allowed to come? Oh, no.”

He leaned in, almost growling the words into Sam’s ear.

“I want you coming, Sam. I want you shooting your load all over yourself and I want that hot little omega hole clamping down on me and wringing every last drop of come out of my cock.”

Sam made a noise between a whine and a pant, lost in the strange dual feelings of being stroked and filled at the same time. His hips were rocking into Cas’s lap, filling himself again and again with the angel’s cock.

“Come for me, Sam,” Cas told him, and Sam groaned, spilling his come over Cas’s fist. Cas raised his hand and Sam didn’t need to be told what to do, just licked the thin fluid off the angel’s fingers. It was sweet, the taste of omega release, sterile, and it made him pause, but Cas pushed his fingers insistently against Sam’s mouth and Sam opened for him.

Sam’s tongue lapped against the pads of Cas’s fingers, and the angel came with a shudder, silent, spending himself into Sam’s body.

Sam stayed there, panting, his head resting against Cas’s forehead, their faces only a few inches apart. He didn’t feel different. Not exactly. But for better or worse… it was over. His owner had claimed him and that… well, that was that, Sam supposed. He shifted slightly, feeling Cas’s softening length inside him, and it didn’t hurt, exactly, as much as it just made him feel… full. He didn’t have the urge to knock Cas onto the carpet and mount him in return, so, that was the alpha gone for good, he supposed.

He didn’t know how to feel about that.

He realized he was still suckling at Cas’s fingertips, and that Cas was letting him, a bemused smile on the angel’s face. He pulled back, blushing deeply.

“I’m going to let Dean out now,” Cas told him, looking up into Sam’s eyes. Sam’s heart hammered in his chest. Dean wasn’t like Cas. He and Dean had been chasing and wrestling and fighting for weeks. This was just more of the same- only this time, Sam was going to lose.

He whined, back deep in his throat, begging for a reprieve, but Cas simply clicked his tongue.

“Up on the table, Sam. Like we’ve been doing.”

Sam stood, feeling the unpleasant sheen of come and slick on his thighs. He kept his face down as he crossed the living room, hoisting himself up onto the table where Cas had been changing his dressings.

Cas whistled for Dean, and the alpha was there before Cas could even cross the room. Sam had a bitter suspicion that he had not, in fact, been in his room.

Cas lifted Sam’s cock, checking his incision for any damage caused by the claiming- there was none, of course. His fingers dropped to probe Sam’s wet, slick hole, and Dean whined. Sam shut his eyes, crossing his arms over his face. He could feel Dean there, between his legs, scenting curiously at the heat-slick streaking his thighs and ass. Sam expected Cas to pull him back, as he usually did, but instead, Cas stepped away. Dean’s hands rested lightly on Sam’s thighs, and Sam tried to close his legs, but it was impossible. Dean was too close. Sam glared down at him, growling lightly.

No,” Cas insisted, and Sam winced as his owner took a nipple between two fingers and pinched, twisting sharply. Dean looked from one of them to the other, questioning.

“Go ahead, Dean,” Cas told him reassuringly, and a second later, Sam felt the wet heat of Dean’s tongue on his inner thigh.

It was expected mating behavior, Sam had pictured it himself hundreds of times, but in his mind, he was always the one below, tasting the slick of his fertile partner on their thighs. He’d imagined himself hardening as he licked them clean, working his way up to the apex of their thighs-

Dean’s hands were on his ass, spreading him wide, baring his sloppy, swollen hole, and Sam keened as he felt Dean’s tongue there, pushing into him, licking Cas’s come out of him. He could feel himself hardening in response, and Dean took pause, examining his member with caution, like he thought he and Sam were in for another one of their scuffles.

“He’s all yours, Dean. For whatever you’d like.”

Dean glanced from Sam, to Cas, back to Sam, and then he grinned, wide and feral. Sam’s heart sank.

Dean withdrew, extending his hand to Sam. Sam took it, hesitantly, and allowed Dean to help him up off the table. Standing, he was taller than Dean, but that didn’t matter. Dean had his balls, so he was the alpha.

Dean took two steps back, keeping his eyes on Sam’s face. Sam watched him warily, tensed for a sudden movement. Dean didn’t make a move toward him, just hooked his thumbs over the waistband of his shorts and, still looking at Sam, pushed them down.

The alpha stood naked, half-hard already, watching Sam with a gleam in his eye. Sam knew what he was doing. Knew he shouldn’t run.

He ran anyway. He couldn’t help it. The smug grin on Dean’s face was too much, it was a threat all on it’s own, and Sam couldn’t stand there and wait for Dean to make his move.

Dean caught him two rooms later, crashing into him from behind and bearing him to the ground. Sam tried to roll, to fight, but Dean pinned him to the ground under the weight of his body, his hardening cock sliding against the cleft of Sam’s ass. Sam screamed, throwing his elbow back into Dean, but Dean’s cock was already catching on his rim, and with a single easy push, Dean had buried himself in Sam’s hole. His hands were on Sam’s shoulders, holding the omega down as he rutted into him, panting and moaning.

Sam gave up fighting him, stopped scrabbling for purchase on the smooth floor, just lay still and let it happen. Tears filled his eyes as he imagined his belly filling with Dean’s pups. He was going to have to go back into the main room reeking of Dean’s spend and his own omega heat and god, in six or eight hours they were going to be here again whether he liked it or not. An omega in heat was irresistible, alphas had been known to go through drywall to get to an omega on the other side. And Cas didn’t seem interested in separating them.

Dean was nuzzling at the area where his throat met his shoulder and Sam squirmed away, trying to get away from what he knew he couldn’t stop. Dean growled, taking hold of Sam’s arm and twisting it up behind him until Sam thought the shoulder might pop. He stopped fighting, his breath coming hard, his throat bared in submission. Dean nosed at it, his tongue hot on the salt-sweat skin, and then his teeth were digging hard into the muscle at the junction of throat and shoulder. Sam howled, the tendons of his throat standing out as Dean bit deeper, leaving his mark permanently etched into Sam’s skin.

Sam ran out of breath and Dean pulled back, licking gently at the wound. He wasn’t fucking into Sam’s ass any more, and Sam realized that the alpha had come during the marking. His knot tied them together, but that was it.

The knot… Sam didn’t want to think about the knot. He didn’t want to think about the knot and he didn’t want to think about the pounding-dull pain in his shoulder, or the soothing heat of Dean’s tongue on the broken skin. He didn’t want to think about Cas, leaning casually against the doorway and watching the display with interest.

Most of all, he didn’t want to think about the needy hardness of his own cock, rutting down against the floor.