Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/4654023.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      Supernatural
  Relationship:
      Castiel/Dean_Winchester, Castiel/John_Winchester
  Character:
      Castiel, Dean_Winchester, John_Winchester, Sam_Winchester
  Additional Tags:
      Alpha/Omega, Alpha_Dean, Omega_Castiel, Alpha_John, Bottom_Castiel, Anal
      Fingering, Rimming, Anal_Sex, Felching, Hurt/Comfort, Voyeur_Dean
  Series:
      Part 2 of My_Omega_has_a_Name
  Stats:
      Published: 2015-08-25 Words: 3187
****** His Name is Cas ******
by sockadoodledo
Summary
     Dean wants to keep Cas safe from any alpha who wants to take him,
     including his own father. John however is resourceful and makes sure
     to get the omega by himself because he has great plans with him. Cas
     actually enjoys the older alpha fucking him and John feels encouraged
     enough to talk about breeding him and taking him to his own bed.
     Can things work out between Dean and Cas even as Dean sees him with
     his father and John clearly won't take a no for an answer?
During the next few weeks, Dean and Cas were mostly holed up in Dean’s room.
When they were at school or out on the town, Cas kept very close to Dean,
keeping his head down and trying not to draw attention to himself.
Whenever someone wanted to start gesturing to Cas, Dean growled before they
finished the familiar flipping hand gesture and trotted off instead.
But soon the big final football match of the season came up and Dean simply had
to partake in it.
“Are you gonna be alright by yourself?” he breathed into Cas’ clavicle, holding
on tight just before he was about to leave.
“Why? Don’t you want me to come with you?” Cas’ eyes filled with water.
“Babe, you know I’d love to, but I’ll be out on the pitch. I can’t protect you
there. And Dad and Sam will be there too, so you have the house all to
yourself. I just want you safe.”
“Yes, I understand. I just don’t like it when you’re not here.”
“I know, I don’t like it either. But we gotta be careful.”
Dean climbed Cas to give him an enthusiastic goodbye kiss which turned out into
a lengthy make out session until hard knuckles made a knocking sound on the
door.
“Dean, get out of the omega and let’s go. You’re gonna be late.”
“He has a name!” Dean yelled back at his father, but regretfully let go of Cas
and packed his football gear. “I’ll be back as soon as I can,” he promised
before he was out the door and left Cas behind, shivering in his absence.
 
Cas wasn’t happy about Dean being gone; he meandered around the empty rooms,
looking out of the windows and checking the clock every 5 minutes to see if
Dean would come back already.
He was grateful that Dean kept all unwanted suitors off him, but it sometimes
also made him mad to be practically helpless. He knew that Dean wasn’t the only
alpha who thought he was pretty and many just waited for the opportune moment
when Dean wasn’t by his side to mate with him.
Just when his thoughts had reached this point, he heard the door unlock and
heavy steps first turning into the kitchen, then down the hall until the steps
stopped where Cas was cowering in the living room.
“There you are,” John Winchester said and walked in, the inevitable dawning on
Cas. John had left the game right after Dean ran out onto the pitch to come
back here and fuck him.
The older alpha wasn’t as blunt as last time. He sat down next to Cas,
carefully taking in his appearance and then slowly lifting one hand to cup the
omega’s face.
“Shhh, don’t worry. I’ll make it good this time.”
He crowded in on Cas, moving over him and parting his legs with strong hands
while Cas kept himself pliant.
He gasped when John’s jeansclad knee rubbed over his cock and his hole,
stimulating him deliciously.
“Yeah,” John praised when a moan escaped Cas as slick leaked out of him. “Last
time you weren’t into this because you didn’t know what to expect, huh? But the
way you moan when Dean fucks you shows me that you’re a right omega after all.”
John opened Cas’ jeans, leaving room for objection which wouldn't come from Cas
because John kept rubbing him with his leg. And when no sound other than
breathy gasps feel from Cas' lips John stuck his hand into his trousers right
away, rubbing the slit of Cas’ cock before his hand wandered lower to his hole.
Two fingers went in easy this time and John pulled them out triumphantly
groaning before he stuck them into his mouth and suckled at them.
Cas marvelled at the older man showing great relish at his taste and willingly
undressed fully when John showed him the sign, his head strangely clear and his
hole throbbing to have something bigger than fingers in it.
He got on his hands and knees, begging that John kept his promise to make it
good because he really wanted to be mounted now. He expected to feel a cock
pressing it’s way into him, but instead John's hands were parting his ass. He
felt stubble scrape over his cheeks and then there was a moan when John started
to eat out his ass.
“Fuck,” Cas whispered when the older man’s tongue lapped into him and he
actually moaned because he couldn’t get enough of Cas’ slick.
“Mhm, I got you to talk,” John said with pride in his voice. “I prefer it if
omegas like what I’m doing and I think you like this very much, don’t you?”
Cas moaned in answer and pressed his ass out for John to continue rimming him.
“I knew it,” the dark chuckle was already back inside his crack and then John
went right back into him, licking deep and pointing his tongue inside Cas until
he felt slick leaking out the entire time. John was incredibly happy and lapped
it all up faster than Cas could produce it.
“Fuck you taste so good. I could spent the entire day eating you out. But we
don’t have much time and I want to fuck you properly.”
By now, Cas was so desperate that he knew no decency anymore as he groaned out:
“Please alpha. Fuck me, please.”
“Atta boy,” John praised and lined up his cock to Cas’ ready hole. He pushed
inside and Cas felt great. He worked John’s cock inside him while he went as
deep as he could.
“Wanna ride you hard, boy,” John said as he picked up sharp, edged thrusts
inside him.
“Yes, do it. Fuck, I need it.”
“That’s right,” John’s smile was evident as he dragged Cas back onto his cock,
pistoning in and out with force. “I knew you’d love my cock inside you. You
like it better than Dean’s, don’t you?”
Cas’ let his head fall into a pillow as he fucked himself on John’s thick cock
inside him and mumbled something indecipherable because he wouldn't lie and
tell him that he enjoyed this more than being with Dean. John must have
understood it as assertiveness because he slammed into him now with full force,
his balls slapping against Cas’ perineum whenever he fucked inside.
“That’s a good omega, hmm. Breed you deep, fuck a big fat litter of pups into
your belly, ah!” John shouted as Cas felt him come inside him.
Cas was so into the fucking that he took up his cock, jerking it with a handful
of hard strokes and then he came underneath himself while John stilled inside
him.
“Woah, your pussy is milking me. That’s what happens when omegas come? No
wonder Dean loved that so much. Ah, this is good,” he said as he slipped out
and popped Cas’ hole open.
“Let’s see how you taste with me inside you, huh?” and John lowered his head
into Cas’ crack again, sucking his own come out and licking up the abundance of
slick Cas had produced.
“Hmm, so good,” John said as he allowed Cas to sit up and dress himself again.
“I want you to come into my room tonight. I really wanna fuck you full of my
seed until you pup.”
Cas blushed fiercely, because that was the last thing he wanted and his eyes
wandered over to the doorframe where he saw Dean standing there, his eyes wide
and horrified.
 
Dean thought his whole world was ending when he saw John sneaking off from the
pitch.
He played lousily and the coach really shouted at him as soon as there was a
short pause but Dean hardly listened. His father still hadn’t returned and he
just ran off the pitch, off home to check on Cas.
When he reached home, his worst fear had actually come true, because he heard
John’s voice in the living room, talking to Cas. And then he stopped dead in
his tracks because Cas answered, not frightened but doubtlessly horny: “Please
alpha. Fuck me, please.”
Dean stood there in shock, frozen to the spot, when the sound of skin on skin
started soon after that and Cas moaned brokenly while John undoubtedly fucked
him senseless in there.
He couldn’t move, but he had to. He had to be sure of what was happening and
see that Cas was alright at least.
Dean peeked into the living room and saw his father grab Cas’ hips for better
purchase as his omega, his Cas, shouted at his father: “Yes, do it. Fuck, I
need it.” And he thought his heart couldn’t be more broken until his father’s
words actually still made it worse.
“You like it better than Dean’s, don’t you?” he heard his father shout as Cas
fucked himself on his cock, and he muttered something into the pillow while
Dean’s heart galloped away in his chest, pumping blood through his veins that
felt like acid burning him. It hurt, it hurt so much and everything John said
as he neared orgasm made it worse. He wanted to take Cas away from him, to
breed puppies into his belly? To sleep in the same bed with Cas, after he
sneaked out of his, of Dean’s room?
Icy splinters were now inside him and for a second, he didn’t even realise that
Cas looked up at him, but then he focused and his face locked into a tight mask
as he turned on his heel and stomped up to his own room, locking and bolting
the door behind himself, even as he heard a small voice call out to him: “Dean,
please open the door. We need to talk about this.”
“No, we don’t,” he yelled back. “Go back to the old man and have him fuck you
pregnant.”
“I don’t want that.”
“Sure as hell didn’t look like it just now.”
“Please, Dean. Let me in.”
“No.”
“Please, Dean,” Cas said and there was a sob in his voice. “Please.”
“Ah, fuck it!” Dean yelled and ran over to the door to rip it open and tear Cas
a new one. But when he saw Cas just as horrified as he had been just now, he
felt the anger leave him and he pulled Cas in, locking the door when he heard
John’s voice shout something downstairs.
“So what have you got to say?” he asked, way less heated than he had felt
before.
Cas’ tears spilled over and he fiercely embraced Dean, muttering “I’m sorry”
over and over until Dean felt his own eyes sting and burn.
“I couldn’t help it,” Cas sobbed against him. “It felt good. I’m so sorry.”
“Hey, hey,” Dean stroked over Cas’ back. “It’s okay.”
“No it’s not. You didn’t want me to be with others and then this happened. It’s
not okay.”
“I didn’t want you to be with others if you don’t want it,” Dean corrected Cas
and pulled him over into his bathroom for a shower.
“So you liked it? He didn’t force you?”
“No. He was very dominant but he didn’t force me.”
“And you laid a hand on yourself to get you off? That’s something you shouldn’t
do with just any alpha. You know that, don’t you? They might get brutal because
of it.”
“I know, but I couldn’t help it. It was like a trance when it got really good.
I just had to come and we always do it like that,” he added, his voice getting
smaller again.
“I know we do,” Dean said, and despite the unspoken things between them, he
pulled Cas up and held him tight to his aching heart. “You couldn’t help it.”
“I couldn’t,” Cas agreed and held on to him.
“So…” Dean’s throat was scratchy and hurt. “What happens now?”
“I don’t want his pups,” Cas said very quickly. “I don’t want to go into his
room tonight.”
“You don’t?” Dean said, surprised and relieved.
“No, of course not,” Cas rumbled, actually angry as he frowned at him now. “I
want you! And I want your pups, you stupid idiot.”
"Thanks,” Dean smiled because he didn't know what else to say, before he
actually laughed at Cas growing some backbone and being comfortable enough to
speak to him like that.
“Let’s get you cleaned up and think about this for a bit, okay?”
“Yes,” Cas agreed and stripped out of his clothes. He turned around and Dean’s
gaze zeroed in on his ass, expecting come stains or slick there until he
remembered that John had practically sucked Cas dry after coming inside him and
a possessive growl rose up in his chest.
Cas cowered again and looked back at Dean, cupping his cock and hiding his hole
from view.
“I’m sorry,” he said again, blushing and guilty looking.
“You don’t need to be sorry, Cas. That’s the way the world works. But I hate
it. I hate that someone else can come to you and take you like that. I hate
that we can do nothing against it. I don’t wanna share you with anyone.”
Cas looked at him from inside the shower, holding out his arm for Dean to join
him as he discreetly cleaned any signs of what happened in the living room out
of himself.
“I want that too,” he breathed when Dean was flush against him, closing the
cubicle.
“Look at us,” Dean chuckled as Cas lathered him up with sure movements. “Two
sorry sons a’ bitches against the rest of the world.”
“I don’t mind that,” Cas purred and rubbed himself on Dean. He felt arousal
building inside him, but he didn’t wanna get into this without having something
absolutely certain.
“So, you really don’t like my father better than me? And what he does to you?”
Cas shook his head and turned himself around, presenting his clean hole,
already producing slick again just for Dean. He smirked over his shoulder,
capturing Dean’s mouth as he felt Dean’s cock thrust into him.
“I want you. Because you’re my alpha.”
“And you’re my omega,” Dean replied and his hands sneaked around to Cas’ front,
fucking him from behind, tweaking his nipples and stroking him off until the
shower washed both their come down the drain.
 
Dinner that night was awkward again, just like the time Dean and Cas had done
it in John’s presence. The older alpha laughed loudly while Dean and Cas sat
there, both not hungry and thinking about ways to get John to let Cas off the
hook for tonight while Dean’s younger brother Sam looked at everyone and tried
to unravel the mystery of what was happening here.
“We’ll need pup beds soon,” John said during desert. “I plan to have at least
six with you. Hopefully we can get fertility testing done and you can have more
than one at the same time,” he said while looking at Cas.
Cas only jerked his head and took Dean’s hand which lay next to his plate,
tightening his grip on him until Dean and Sam noticed it. John however just
went on about having new pups in the house soon.
“After you’ve had half a dozen pups, you’ll sure know your place, omega. And
perhaps some of my buddies would like you too, ey? An omega who actually comes
from fucking is something special.”
“His name is Cas,” Dean fumed again and now he tightened his grip on Cas’ hand.
 
After dinner, they went into Dean’s room again, staring at each other with
hopelessness in Cas’ eyes and righteous anger in Dean’s.
“He seems determined,” Cas started.
“He’s not having you,” Dean said at the same time.
They stood there for a while, ways to get around this going through their
minds.
“There’s nothing for it,” Dean finally said. “We’re running away.”
“What? Where?” Cas asked, again timid all of a sudden. This was something new,
something he didn’t feel comfortable with and his initial reaction, like
anything ever since he presented, was fear.
“I don’t know where. Anywhere but here.”
“But Dean what would we do? Be on the run, don’t have anything to eat, nowhere
to sleep?”
“Yes, if we have to,” Dean walked closer, taking Cas’ hands softer than at the
table. “I’m willing to do this so I don’t have to see you carry Dad’s pups
inside you.”
Cas nodded his assent, because yes, sleeping in the dirt was worth it if it
meant seeing Dean with hope and love in his expression and not the stone cold
disappointment that he had seen after John had pulled out of him.
“I agree,” he finally said. “I want to leave with you.”
Dean nodded and they started packing to be able to disappear before John
demanded to have Cas in his bed.
 
They walked down the stairs quietly, both carrying a big duffle filled with
clothes in their hands and had already reached the door which let to the garage
when a voice spoke up behind them: “Where are you going?”
“Sammy?” Dean asked, relieved that it wasn’t his father, but still very
startled.
“Yeah, it’s me,” his younger brother answered and came up to them.
“Cas and I are just going out for a bit, won’t be long,” Dean tried to lie to
Sam.
“And that’s why you’re carrying hugeass duffles and look like you were caught
doing something shady just now?” Sam raised his eyebrow.
“We don’t have time to discuss this, but Cas and I need to leave right now.”
“Yeah I know, Dean,” Sam said as if his brother had the thickest skull on the
planet as he held out his own dufflebag. “That’s why I packed too.”
“What? Sammy, no. You can’t-”
“Look, either you can take me with you or we can continue to stand here until
Dad catches us. What’s it gonna be?” Sam said matter-of-factly.
“You’re a fucking pain in my ass,” Dean mumbled as he opened the door to the
garage and Sam understood it as invitation enough to slip in after them.
They loaded the family car up with their bags, and Dean backed it out of the
driveway, praying that the signature rumble of the '67 Impala wasn’t too loud
before they reached the main road and could speed off.
He turned the wheel and Sam, who had somehow managed to slip into the shotgun
seat yelled: “He’s there. Go, go, go!” and Dean floored the gas pedal and they
drove off at neck breaking speed, Cas in the backseat watching John Winchester
run out over the front lawn and mouthing something unintelligible with a
distorted face as if he was screaming.
“Everyone alright? Everyone there?”
“There is a Dean. Check. Here is a Sam. Check. And there is a Cas. Check,” Sam
beamed as Dean drove them out of town.
“Stop being so cheeky or I’ll leave your ass by the side of the road,” Dean
grumbled.
“No, you won’t,” said Cas and Sam at the same time and their journey into an
uncertain future went on.
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