Archive of Our Own ^beta

Chapter Text

Castiel didn't honestly know much about his neighbor, aside from the fact he was an Alpha and worked for a company called Sandover Inc. He honestly hadn't had many interactions with him, other than a handful of run-ins in the common areas around their apartment building. The laundry room, courtyard and such. 

The rare times the Alpha actually said anything to him, it was mainly small talk. Then one day Castiel noticed, because he was a rather observant Beta, that he hadn't encountered the Alpha in a couple of days. He didn't bump into him in the elevator on his way from and to his apartment and he hadn't run into him in any of the common areas. 

He was even surprised he hadn't seen the Alpha come in or out of his apartment, even though he only lived a few doors down. It was all just odd, but he tried not to think too hard about it. He figured with the man's work, he probably had odd hours or perhaps worked from home sometimes. It certainly wasn't anything to concern himself with. So, then why did he feel like he should be?
_-_-_-_

Castiel found himself standing outside his neighbor's door, for reasons he didn't fully understand. It'd had been three days without a single interaction with the Alpha, which he had found a little strange, so he decided to check on him. He took a deep breath, letting it out as he knocked on the door.

Two things happened that he had not expected when the Alpha answered the door. One, the Alpha looked sick and two, he was shirtless, in only a pair of sweatpants that rode low on his hips. Castiel stood in the hall blinking in confusion as his brain essentially short circuited at the sight.

"Hello?"

Castiel mentally shook himself, realizing the Alpha had been talking this whole time. He scratched the back of his neck nervously, blushing in clear embarrassment. "Sorry," he muttered quietly before quickly adding. "I hadn't seen you in a couple of days, I felt compelled to see if you were okay." Castiel glanced up at the Alpha's pale face, taking notice of his dark eyes.

The Alpha was clearly not well, and from his scent Castiel could tell he was in rut. His first instinct was to ask if he's staying hydrated and eating properly, but from his pale complexion, he could tell he was not. Rather than embarrass the Alpha with a myriad of personal questions, Castiel simply decided to take it upon himself to help the poor man.

"I appreciate the kind gesture, though as I'm sure you can tell, I'm a bit under the weather at the moment. So, forgive my rudeness, but..." Castiel cut the Alpha short with a click of his tongue, catching him off guard as he easily slipped past him into the apartment. Castiel glanced around the rather nice looking apartment. Nothing at all like his own, which made him smile.

"Do you make a habit of barging into people's homes?" the Alpha rounded on him, his large frame making him tower over Castiel with ease. "No, but I feel it's justified if I'm here to help you." Castiel responded tilting his head up slightly to meet the Alpha's eyes. "Help me?" the Alpha sounded genuinely confused now, which only made Castiel's smile widen.

As a Beta, Castiel was rather unassuming and most everyone in his life viewed him as a pushover, and someone who follows rules and orders like a good little soldier. He's anything but, which surprises people and he finds it extremely amusing. Especially hot Alphas. 

Where had that come from?

"Yes, partly due to my instincts and partly helping out a neighbor in need." Castiel stood his ground when the Alpha took a step closer than necessary towards him. "If you don't want me here, I'm sure you could easily kick me out... The fact you haven't says enough." he added when the Alpha merely cocked an eyebrow.

Before he could say anything, Dean stumbled forward, barely catching himself with his hand on the wall just inside the door above the Beta's head, essentially pinning him in place. "That's it. I am officially appointing myself as your caregiver." Castiel growled softly, placing a supportive hand on the Alpha's chest.

Dean allowed the Beta to push him away, a small jolt of something going through him at the feeling of the Beta's hand on his bare chest. He let the Beta lead him further into the apartment until they reached the living room, slowly sinking down into the plush couch as the Beta gently urged him to sit. Satisfied the Alpha was comfortable, Castiel turned from him and went in search of the kitchen.
_-_-_-_

Once inside the kitchen, Castiel rummaged through the various cabinets, pantry and even the fridge to take stock of supplies. He frowned when he found very little food stuff or drinks. Is this man an idiot? Not stocking up before a rut... Castiel snatched the note pad he spotted stuck to the fridge and quickly found a working pen in what was obviously a junk drawer.

Liquids
Hydration packs
Meat
Veggies
Vitamins
Sugars

Castiel bit the end of the pen as he stared down at the hastily written list in his unintelligible handwriting. He would have to run back to his apartment and gather up any supplies he already had to give to the Alpha before he made a run to the store. Snatching up the list, he returned to the living room to see the Alpha sitting exactly where he'd left him.

"Do you have any food allergies?" he asked nonchalantly, catching the Alpha's attention from staring at nothing. "No..." he answered hesitantly, blinking up at the Beta. "Good, I'm going to bring you some things then make a trip to the store." Castiel hummed, nodding. "You hardly have anything here. What sort'a Alpha doesn't plan for their rut?"

"Excuse me?" Dean tilted his head at the Beta, surprised by the blunt question. "I hadn't expected it..." he mumbled quietly looking down at his lap. Castiel blinked, taken aback by the unexpected answer. "My rut came on suddenly, I think someone at my work triggered it." he said, still speaking quietly.

"Well, that certainly changes things." Castiel nodded sympathetically, giving the Alpha an understanding look. "How so?" Dean pursed his lips. "It means you aren't a complete idiot Just unfortunate." Castiel gave him a small smile. "You're rather bold for a Beta." Dean remarked. Castiel shrugged his shoulders at him.

Without another word, Castiel turned towards the door and before the Alpha could stop him, snuck the spare key from a dish on the table in the small entryway before leaving the apartment. Castiel slumped back against the shut door, groaning in frustration. What the hell had he just gotten himself into? 

Chapter Text

Castiel grabbed the canvas tote bag hanging on the pantry door as soon as he stepped into his kitchen, bringing it over to the dining table and moving to open his fridge. He gathered up several bottles of water, the plastic container full of leftover pasta and an armful of various other items he thought the Alpha might like.

Satisfied with his haul, he slung the now full tote over his shoulder and made his way back out into the hall. He knocked on the Alpha's door once in warning before entering the apartment. He stepped into the living room and set the tote bag down onto the coffee table in front of the Alpha still perched on the couch.

"What's all this?"

"I brought you some water, leftover pasta and some other goodies to hold you over while I head to the store and stock up on supplies. Is there anything else you need that I'm unaware of?" Castiel responded with a smile. The Alpha tilted his head in thought before answering. "Maybe some scent blockers, I don't want to stink up my place." Castiel nodded in understanding.

"Here," he pulled out his cellphone from his back pocket and handed it to the Alpha after opening his contact list. "Give me your number and text me if you think of something while I'm gone." The Alpha accepted the phone and quickly typed in his number and added his name in the contact info before handing it back. Castiel gave a little smile looking at the new contact.

"Hello Dean, my name is Castiel." he gave the Alpha a small wave as he tucked his phone back into his pocket. Dean smiled, one side of his mouth quirking up with the motion. "Nice to officially meet you, Cas." Castiel raised an eyebrow at the unexpected nickname. Unsure of what to say, Castiel nodded and turned around to head back out into the hall.
_-_-_-_

To: Dean
Nearly done here. Should be back in 20.

To: Castiel
Sounds good. Thanks again...

To: Dean
No problem, happy to help.

Castiel tucked his phone back into his pocket as he approached the self checkout aisle, making quick work of ringing up all his items. He'd made sure to get everything on the list and then some, mostly picking up things he needed as well, and even a few items he thought the Alpha might appreciate. Though he wasn't entirely sure why, it just felt like the right thing to do.

Checked out, Castiel bagged everything and piled it back up inside the cart before leaving the store. He made his way across the fairly busy parking lot to his car, popping the trunk and setting the many bags inside. He pushed his cart into the cart corral, then dashed around to the driver side of his car and got in. Putting the car into drive, he exited the parking lot and turned onto the main street. Halfway back to the apartment building, Castiel dug out his cell and shot Dean a quick message.

To: Dean
Do you like burgers?

To: Castiel
You're joking, right?! They're only in my top five fave foods

Castiel couldn't help the chuckle that bubbled out of him at Dean's response. He quickly made a short detour and stopped off at a local burger joint and went around the drive-thru, getting Dean and himself a hot meal. He hadn't really bought anything to properly cook and he felt awkward at the idea of using Dean's kitchen. Burgers was the easiest solution to both problems.
_-_-_-_

"I'm back!" Castiel called as he entered the apartment, his arms loaded with bags and their take-out held in one hand. Dean was there in an instant, taking the paper bag of take-out from him, as well as one of the heavy totes. "You seriously didn't have to go through the trouble..." Dean started. Castiel tsk'd him, giving the Alpha a look.

"Come on, help me put these down and we'll eat." he led Dean into the kitchen, setting down the other tote bag he'd been carrying in the crook of his arm. Dean set the other tote bag onto the floor by the fridge and passed the paper bag to Castiel. The delicious scent of burgers and fries filled his nose when Castiel tore open the bag.

"I wasn't sure what you'd prefer, so I went with a classic. Double bacon cheese with a fried egg and garlic butter bun." Castiel grinned sliding a foil wrapped burger across the table as Dean sat down. Castiel quickly grabbed them each a bottle of water from the fridge and came to join Dean at the table with his own food.

Dean tore off the wrapper and took a huge bite of his burger, an obscene moan escaping him as he chewed and swallowed it down. Castiel shifted in his seat, dragging his eyes from Dean's mouth to his own burger. Who moans over a burger? Castiel chalked it up to the guy having not eaten anything substantial in a couple of days and ignored it. Then it happened again. What the fuck?

Castiel focused on his burger, eating slowly and occasionally popping a fry into his mouth. Dean finished his burger in a few more bites before turning his attention onto his fries. "Fuck, these are good." Dean exclaimed popping one into his mouth with a flourish. Castiel nodded in agreement, not trusting himself to speak all of a sudden.

Dean cracked open the lid of his bottle of water, bringing it up to his lips before tilting his head back and chugging down the liquid. Castiel stared, mesmerized, as Dean's throat worked to swallow down the contents of the bottle. A bit of water dripped down his chin and Castiel had the inexplicable urge to lick it up.

"Bathroom?" he croaked, nearly jumping up from the table. Dean lowered the bottle from his mouth and looked up at Castiel. "Uh, down the hall, first door on your left." he answered tipping the bottle in the direction of the living room. Castiel dashed out of the kitchen without another word, desperate to get away from the Alpha.
_-_-_-_

In the safety of the bathroom, Castiel leaned on the counter and stared at himself in the mirror above the sink. What the actual fuck is wrong with me? He glanced down at himself and whimpered, noticing the slight bulge tenting his jeans. He was a Beta for fuck sake, he shouldn't be so easily affected by an Alpha, even one in Rut.

Dean was attractive, he could admit that much. He was built, had a great frame and beautiful features for an Alpha. Despite the pale complexion and dull eyes, Castiel could tell Dean was normally tan and had gorgeous green eyes. The way he moaned when he ate and then the whole water bottle incident, that had pushed Castiel over the edge.

As a Beta he wasn't easily affected by being around Alphas and Omegas during their cycles, he had helped many through Ruts and Heats. This should be no different, especially with how bad off Dean seemed to be. His inherent instinct to care had simply taken over and he vowed to help Dean through this unexpected Rut.

But now he was wondering if it was such a good idea. Maybe a triggered Rut without the Omega around would be more difficult to get through, and maybe some biological instinct had driven Castiel to wanna help him through it. He grabbed his phone out of his pocket and shot off a quick message to his brother, a brief synopsis of what he'd gotten himself into. 

Chapter Text

To Castiel:
Sounds like a real predicament little bro.
Does he have a brother?

Castiel stared down at the text from Gabriel, growling softly under his breath. "Everything okay, Cas?" Dean called through the door, his voice startling Castiel out of his thoughts. "Y-yeah... All good. I'll be out in a moment." he responded turning to look at the door. He listened as Dean walked away from the bathroom door, waiting a minute before pulling it open.

Castiel made his way back into the kitchen, stopping at the entrance when he noticed Dean putting away the supplies he had bought. "Here, let me do that." Castiel stammered moving to join the Alpha at the pantry. "You don't have to..." Dean began as he and Castiel reached inside the tote bag at the same time, their hands grabbing one another.

Castiel blinked in surprise at how warm Dean's hand felt, at how soft. He mentally pictured the Alpha's hand wrapped around his cock. Stop it, what is wrong with you? Castiel laughed nervously making to pull his hand away when Dean unexpectedly tightened his grip. "Dean, what are..." Castiel's next word came out as a gasp as Dean pulled him into his embrace.

Before Castiel could fully register what was happening, Dean was kissing him hungrily, his other hand grasping Castiel's hip to hold him against his large frame. Castiel's nostrils flared as the Alpha's scent assaulted his senses. Dean smelled like whisky and rainstorms, it was intoxicating. Castiel melted against him, their mouths molded together perfectly.

Dean moved his hands to the backs of Castiel's thighs, easily lifting him off the floor and sitting him on the edge of the counter, not breaking the kiss once. Castiel absolutely did not whimper when the Alpha slotted between his open legs, his arousal rubbing against his own. "Fuck... I don't know what came over me." Dean whined taking a step back, looking up at Castiel through his lashes.

"You were just acting on instinct, it happens to the best of us." Castiel supplied giving the Alpha an understanding look. "I shouldn't have done that to you... I'll understand if you leave." Dean's gaze fell to the floor, unable to look at the Beta. "Did I say I was leaving?" Castiel questioned reaching out for the Alpha. He hooked a finger under Dean's chin, making him look at him. Dean shook his head slowly.

"I'll finish up in here, you go take a nice shower and I'll be in to help you." Castiel instructed as he slid from the counter. Dean furrowed his brows in confusion but quickly nodded when Castiel simply gestured for him to leave the kitchen. Castiel watched Dean walk out of the kitchen before turning his attention onto the tote bags still full of supplies and groceries.
_-_-_-_

Dean closed his eyes under the spray of warm water in the shower, the water rolling down his muscular body. He heard the bathroom door quietly open as the Beta stepped inside the small room. The distinct rustle of clothes being removed drew Dean's attention, leaning out of the spray to tug back the shower curtain to see Castiel in the process of removing his jeans, bent at the middle.

"What are you..." Dean trailed off as Castiel straightened back up. Dean's eyes drifted to the Beta's cock hanging between his thick thighs. Dean felt his own cock perking up at the sight of the Beta standing in his bathroom, completely nude. "Get your ass in here, now." he growled, his eyes flashing at the Beta. Castiel didn't hesitate to obey the sudden order, moving to join Dean inside the shower.

Dean pinned Castiel against the tiled shower wall, reaching one hand out to snap the curtain back into place, concealing them in semi darkness. "Before you say anything, I'm doing this of my own volition. I'm not affected by your Rut, just by you." Castiel explained calmly looking Dean in the eyes. "I want this. Is that okay?" Castiel watched as Dean considered his admission.

Dean placed his hands on Castiel's hips, urging him under the spray of water. Castiel's mussed hair clung to his forehead from the water, Dean swore it made him look even sexier. Dean crushed his mouth over Castiel's, growling into the kiss as Castiel moaned in response. Castiel hooked his arms around Dean's neck, deepening the kiss. He whimpered when his stiff cock pressed into Dean's thigh.

"I want you to get yourself off on my leg, Beta." Dean growled lowly in Castiel's ear, pressing his thigh up between the Beta's. Castiel whined at the slick friction Dean's thigh caused. "Yes, Alpha." he moaned as he began to rock his hips, rutting against Dean's thigh. Dean watched intently as Castiel humped his leg, precome dribbling out as his cock grew harder.

"Fuck, you have such a beautiful cock, Cas." Dean murmured quietly, meeting Castiel's blue eyes. "I need to taste you, Cas." Dean growled, sinking to his knees before the Beta. Castiel's head fell back, his eyes fluttering closed as Dean wrapped his lips around the head of his cock. "Ooh fuck!" he cried out when Dean took him to the base into his mouth.

Dean hummed, licking every inch of Castiel's cock his tongue could reach as he bobbed his head back and forth on it. Castiel grabbed Dean by his shoulders to steady himself, his knees growing weak as Dean sucked and licked him. "I-I'm coming!" Castiel moaned as his hips jerker, spurting hotly into Dean's mouth. Dean swallowed every drop as Castiel came continuously.

"Fuck, that was hot." Dean grinned pulling off Castiel, standing to his feet. Castiel backed Dean against the wall, his hand curling around the Alpha's throbbing cock, stroking it slowly. "I want this inside me, Alpha." Castiel whispered in his ear, teasing the tip of his cock with his thumb. Dean groaned, his head falling back against the wall.
_-_-_-_

Dean led Castiel into his bedroom, flicking the light on as they stepped inside. "Make yourself comfortable, I have to get a couple things." Dean gestured towards the king bed pushed up against the far left wall. Castiel approached the bed, crawling up into the middle of it before laying back against the pillows. He could see Dean by the dresser across the room. 

Dean turned around to face him, holding a bottle of lube and a condom in hand as he came over to the bed. "Turn over." he instructed twirling his finger at Castiel. Castiel rolled over onto his stomach, bunching up a pillow beneath his chest for support. Dean moved to kneel between Castiel's legs, setting down the lube bottle and condom on the bed.

"At any time you feel uncomfortable, let me know. Okay?" Dean hummed trailing his hands up the backs of Castiel's thighs, his thumbs resting against where his ass met his thighs. Castiel nodded his response. "Okay." he confirmed, knowing Dean needed a verbal answer. "Good, let's begin." Dean purred covering Castiel's ass with his hands.

He kneaded the soft flesh of the Beta's ass, loving how it felt in his hands. He gently dug his nails in, earning a surprised gasp that turned into a low moan from the Beta. "You have an incredible ass." he commented casually, smiling when Castiel huffed a laugh. "Less talking, more prepping." Castiel mumbled, wiggling his ass teasingly.

Chapter Text

Castiel panted heavily, canting his hips and trying desperately not to buck back against Dean's fingers buried inside him as the Alpha slowly opened his hole. Aided by a generous amount of lubricant, Dean worked one, then two fingers past the tight ring of muscle of the Beta's hole. "Dean... Please, I'm ready, I swear!" Castiel cried bucking his hips impatiently.

"I'm not hurting you, Beta. As much as I would love to, we're doing this right." Dean growled low in his throat, hooking his fingers inside Castiel and brushing the pads against his prostate, causing his legs to spasm. "Fuck, fine..." he huffed out harshly "Just hurry up." Dean smirked down at the Beta, stroking his fingers in and out as he stretched his rim.

Dean had to congratulate himself on his self restraint, his cock twitching, hard and flushed between his thighs as he watched his fingers slip in and out of Castiel's tight hole, clenching around them. If Castiel were an Omega, Dean would have been inside him in seconds, pounding him into the bed mercilessly. But he was a Beta, and needed to be prepared for his Alpha cock.

"Ha, ha, that's enough... Fuck, Dean, please!" Castiel panted arching his back, shifting up onto his hands and knees, taking Dean's fingers deeper inside him with the movement. He looked over his shoulder at the Alpha, something flashing in his eyes as he presented for Dean. Dean pulled his fingers out of Castiel, moving to rub the blunt head of his cock against his loose hole.

Castiel bucked his hips, catching his rim on Dean's cock when Dean hesitated above him. "Come on, Alpha. Take me." Castiel growled softly, bucking his hips back against Dean, the head of his cock pushing past his rim. Something snapped inside Dean, his hands coming up to harshly grab the Beta's hips as he slammed fully inside of him.

Castiel whimpered, panting open mouthed as Dean began to thrust in and out of him, hard and fast. "Not so cocky now, huh? Presenting for an Alpha like an Omega, hm?" Dean smirked darkly down at Castiel, pounding into him, his hips snapping against the Beta's ass. Castiel fisted the bed sheet beneath him, trying to keep his balance as Dean continued his brutal pace.

"Oh, did I make you speechless, Beta?" Dean inquired draping himself over Castiel's back, hips flush with his ass, sinking deeper inside the Beta. He brushed his lips over the Beta's neck, over the scent gland he knew was there and inhaled. Castiel's scent was weak, but it was there and Dean inhaled it deeply. "So sweet, Beta, aroused all for me." he whispered, dragging his canines over the gland.

Castiel shuddered beneath him, moaning soundly as his back arched and his chest dropped to the bed, his arms splaying out in front of him. Dean growled when Castiel's ass raised further into the air, his cock nearly slipping out of the Beta. "Fuck, baby." Dean groaned. He urged Castiel's hips down against the bed, following him down.

Dean pinned him against the bed with his full body weight, cock buried impossibly deep inside him as he slowed his movements. "Think you can come from just my knot?" Dean questioned, his breath hot on the back of Castiel's neck. "Yes! Need your knot, Alpha." Castiel moaned, rocking his hips up into Dean's. Dean growled lowly as he eased his knot past Castiel's rim, groaning as he felt it swell and pop inside the Beta.

"F-fuck... Dean!" Castiel cried out as his orgasm shot through him, soaking the sheet beneath him. Dean followed behind him, coming hard inside Castiel's tight channel when he froze up and groaned, dropping his head to Castiel's shoulder. "Fuck!" he muttered angrily. Castiel tensed as he felt Dean come inside him, without a condom.

Castiel's nose flared as he smelled the instant change in the Alpha's scent. "Hey, it's okay. I'm not an Omega and I'm clean." he said quietly, tilting his head as best he could to look at Dean over his shoulder. "That doesn't make it right, I didn't have consent to do that without a condom..." Dean grumbled looking at Castiel.

"Dean, I'm not upset. I promise, here, smell me." Castiel tilted his head back to expose his neck to the Alpha. Dean nosed at the Beta's neck, inhaling his scent, it had barely lessened up from earlier. The Beta was still aroused and calm, that sparked something deep inside Dean. "See? Not upset. And I really like being tied to you." Castiel slowly rolled his hips, earning a drawn out moan from the Alpha.

Dean continued to nose at Castiel's neck, scenting him as he licked tentatively at the gland there. Castiel shivered, moaning lowly as Dean swiped his tongue over his gland. Dean shifted them to lie on their sides, wrapping his arms around Castiel's waist as he held him against his chest, nose still buried against his neck.

"This is so bizarre, compared to how you were before." Castiel commented casually glancing at Dean over his shoulder, shivering again as the movement made the Alpha's nose brush against his neck. "Not that I'm complaining, quite the opposite actually. It's nice." he added quickly when Dean frowned. "I get pretty clingy after..." Dean murmured against Castiel's neck.

"Cling all you want, I don't mind. Honest." Castiel hummed snuggling closer against Dean, shivering from the cool air now. Dean grabbed at the top sheet and pulled it up over himself and Castiel. "We should get some rest, it'll take about an hour for my knot to go down..." Dean announced shyly. Castiel smiled at him sweetly. "Rest sounds good, I'll make food when we get up." he offered, his eyes drifting closed.
_-_-_-_

When Dean woke up, he found himself curled around Castiel, who was sleeping soundly. He smiled down at the Beta in his arms, remembering what they had done in this very bed. Dean glanced at the clock over Castiel's shoulder, the red glowing numbers indicating it was half past nine. They had been asleep for nearly three hours. "Hey Cas, wake up." he whispered, nosing at the back of the Beta's neck.

Castiel stirred in his arms, rolling over to face Dean as his eyes opened slowly. "Mmm, I was having the most amazing dream." he murmured, his voice rough from sleep. "That so? Was I in this amazing dream?" Dean quirked an eyebrow at him, smirking. Castiel wrapped his arms around Dean's neck, pressing closer against him. "Oh yeah," he whispered, smirking back.

"You had me at your mercy, having your way with me." Castiel continued, nosing at Dean's throat and scenting him. Dean let out a low growl, his hands coming to grasp Castiel's hips. In an instant, Dean rolled onto his back, bringing the Beta up to straddle his lap, his cock already hard and twitching against Castiel's flaccid one. "Dean..." he moaned as the Alpha wrapped his hand around his limp cock.

"So beautiful, Beta." Dean whispered reverently looking up at Castiel. Castiel gasped and shuddered, moaning as Dean stroked him to fullness. "Alpha, please." he begged, a low whine in the back of his throat. Dean surged up and captured the Beta's mouth in a heated kiss, his cock sliding against the cleft of Castiel's ass. "So sweet when you beg." Dean hummed, licking into Castiel's mouth.

Castiel dropped to his back against the bed, legs spread to allow Dean to slot between them as he looked up at the Alpha, pleading with his eyes. Dean came to lie above him, caging Castiel's head in with his arms as he moved to kiss and nibble along the column of his throat, mouthing over his gland.