A/B/O and Submissive Biology

Unpresented by pm_lo (3 parts) ~ Part 1 (PDF)~ Unpresented was who Castiel was. It let him do his job, let him see things, hear things that normal people couldn’t, so caught up in the magical world of scents. It allowed him to ignore distractions that preoccupied other agents. It made suspicious eyes glaze over him with only a momentary twinge of pity. Part 2 (PDF)~ Part 3 (PDF)

Save a Horse, Ride a Cowboy by Lucifers_Pony (PDF) ~ Hearing the notorious Winchester brothers are in town, Castiel tries to track down the famous outlaws but ends up captured by them. When the omega brother Dean sets his sights on the Sheriff, the alpha finds him hard to resist. Omega Dean

A Hole in the World by AnnelieseMichel (PDF) ~ Dean comes home to Lawrence to deal with the death of his father and meets Dr. Novak was the attending physician. With a tragic accident, he's back and dealing with the death of his father, the social stigma and objectification of being an out Omega, and the lingering aftermath of a long-ago crime. Omega Dean

Into Your Hideaway by thepinupchemist Part 1 Part 2 Part 3 Part 4 ~ Medical license revoked, Castiel spends his time in solitude in the Rocky Mountains. Coming home one day he comes across a naked, injured, pregnant omega on the side of the road who has run away from his captors. Omega Dean

Mulder and Scully by claimingsanctuary (timeschange) (PDF) ~ Castiel Novak is an undercover FBI agent working to take down a white collar criminal named Azazel, but Castiel finds himself way out of his depths when the case takes a dangerous turn and Azazel gets involved in an omega trafficking deal. With the help of an OPA agent named Dean, the Bureau and the Omega Protection Agency take down Azazel and his seller, Dick Roman. As it turns out, that case wasn't the last Castiel would see of Dean Winchester, and it isn't long at all before Castiel finds himself falling in love with the fiery, strong-willed omega. Omega Dean

These Ember Days by wanderernomad (nomadwanderer) (abandoned WIP) (PDF)~ Amazing writing, unique story. Worth reading even though it's probably abandoned. Dean, a damaged omega, needs a very different sort of care than a traditional Alpha can provide. Castiel, a doctor specializing in Omega treatment, is chosen for him and does his utmost to care for his difficult and complex omega. :-( Omega Dean

Real Slick Dean by trilliath (PDF) ~ This is one of the best a/b/o fic I have read. Omega Dean

Best Laid Plans by Persephoneshadow (PDF) ~ Things are going well for Dean: he's landed the biggest design job of his architectural career. Omega Dean

No Righteous Path by jupiter_james (PDF) (HTML) ~ it's sweet pretty vanilla, Omega Cas he's a drama queen ~ On his 40th birthday, Dean Winchester suddenly begins to worry that he may have lost his chance for a real mate.

Between the Folds of Submission by destimushi (PDF) ~ Castiel Novak, the city’s only Submissive homicide detective, balances navigating a career believed to be a Dominant’s domain and keeping his physical needs in check. Dean is a rich, drop-dead gorgeous famously unconventional Dominant who proves to be a distraction Castiel can’t afford.

Going Down by HazelDomain (wincest) (PDF) ~ Dean Smith is a high-level sub. He tries not to spread the news around, but it gets pretty hard sometimes.... like around the super-hot dom Dean keeps meeting in the elevator.

Stiletto by AtomicFrond (WIP as of 2/15/2018) (PDF) ~ All Dean's ever wanted is to be a Hunter, like his dad. His blood tests show he's a high-level Sub instead of nearly a Switch like everyone had always thought. This could go in BDSM but it think it's better here.

The Unlayering of Castiel Novak (and Not Just in a Sexy Way) by TheReluctantShipper (PDF) ~ It’s incredibly easy to forget that Cas is an alpha. Not that Dean buys into that stereotypical bullshit about subgenders anyway, it’s just that… Well, Cas just doesn’t do anything that normal alphas do.

Catch Me If You Can by vipjuly (PDF) ~ Runs, when the idea was first proposed, were heavily protested, mostly by angry betas and omegas who thought the whole thing was disgraceful, disrespectful, humiliating and degrading. The first Run proved everyone wrong. It was emboldening, powerful, freeing. To pair omegas biologically with an alpha was not only smart, but diplomatic. To give them the opportunity to make the alpha work for what they wanted was a unique twist on the archaic gender roles and stereotypes, and over the next decade, Runs became a popular way for young and healthy people to find the mate best suited for them. As soon as Dean presented as an omega, he knew it was what he was destined for. Dean Winchester has never been caught.

Undercover Boyfriend by CassondraWinchester (PDF) ~ Castiel Novak’s in serious trouble. His sister’s destination wedding in Mexico filled with several days of activities, is in only two days. And everyone expects to meet his underwear model Alpha boyfriend — the one he invented. Undercover FBI agent Dean Winchester’s cover is blown and he needs to disappear fast. Could they be the solution to both their problems?

A Little Less Conversation by kototyph (PDF) ~ “I’m sorry, Dean,” Sam says through the cracked door, “but no. No way in hell.” “You can’t just lock me out of my own apartment,” Dean pants, shoulder braced against the door while Sam pushes from the other side. “Fucking— Sam, come on!” - “Hello,” the man in 606B says. Instead of a boxy suit, he’s in low-slung sweatpants and nothing else, sweat darkening the hair at his temples and gleaming on his chest. He’s staring at Dean like he might try to eat him whole. “Hi?” Dean says, and then the heat-scent hits him. - A smutty fun good time.

Our Dads Play Matchmaker by daydreamdestiel (PDF) ~ this could be longer but it's still really good. Dean's not your average alpha. Sure, he looks and generally acts like one, but there's a lot left to be desired beneath his surface according to society. Cas doesn't think he needs a mate. He's mostly happy with his life. Alpha's are just control-freak possessive jerks that he's better off without. Until their dad's set them up. And then all bets are off.

the mania of owning by sharkfish (PDF) ~ Even though Dean just came from Mexico on foot, his heat is unreal, and he would cut off an arm for just a little box fan to blow on his face. Castiel has been walking through what feels like a dead-air desert for far too long. The sky is huge, endless, and it seems far too hopeful for what the world is now. Post apocalyptic world where Dean has found an empty building in which to die from his heat and Cas is walking through a dessert on his way to nowhere. 10/10/2015

A Broken World by mishaminion69, sydkn3e (PDF) ~ Dean's been on his own for as long as he can remember, fending for himself and struggling through heats alone. The last thing he wants after his tumultuous past is an Alpha, but the heats are getting worse and the winter is particularly brutal. There are rumors of an Omega camp run by a mysterious and uncharacteristically kind Alpha, and Dean finds himself drawn to the scent of Castiel, who welcomes him into the camp with open arms. Dean remains wary of the Alpha despite his seemingly calm nature, but he becomes increasingly interested in the enigmatic Castiel. Together they help each other overcome events of the past and attempt to live and love again in an unforgiving and broken world. Part 2 Pieced Together (PDF) Pregnant Dean

Caniformes by give_it_a_little_nudge (PDF) ~ This could go under epic (it's well over 1M words). It is super long even though it spans a short time period (6 months-ish). For a long time it wont feel like Destiel is the main paring. But it is. So have faith. This is a story you can live in for a long time. Here is a link to an important (spoilery) chart. Summary: In a world in which people evolved from both Primates and Canids, Alpha Dr. Castiel Novak has taken on the monumental task of rebuilding a society broken from years of neglect. The most Dominant Alpha in living memory, Castiel’s calling to renew his species’ dying culture is shared by mesmerizing alpha-Submissive, Dean Winchester. Always close, scene partners, unmatched colleagues, and best friends, the two men’s quiet pining for one another fools no one but themselves. Although desperately in love, alphas cannot mate with alphas, and all too soon, disaster walks into the American Caniforme Research Institute in the form of April Anderson, who is destined to ensnare Castiel whether he wants her to or not. True-Mate Triggers cannot be resisted, and a bereft Dean flees the ACRI and the agony of watching his beloved, now tied to another forever. But the Universe has its own plans, and Castiel’s young mate may prove the very catalyst that Dean and Castiel never knew they could hope for. Just as all their stars seem finally to align, they’re in for another body-slam. Enter Michael Lancet, Dean’s unexpected True-Mate, an Omega unlike any they’ve ever imagined, and the one who may hold the power to unhinge it all.

Little Drop of Poison by Amazonia_8 (PDF) ~ this is a really good crossover between ABO and case fic. -- Castiel doesn't know how to explain what happened to him a year ago, only that something killed his friend and a mysterious Alpha appeared out of the blue to make it all go away. Now he spends his days running a small holistic health shop in LA, unaware that a looming political decision will throw him back into the path of the stranger he's never been able to forget. But how are they supposed to navigate monsters, conspiracies, violent pasts and family secrets when the only thing their instincts care about is making them mates?

The Client by narrativeimperative (PDF) ~ Castiel Novak is a lawyer for an important firm. He’s also, to his chagrin, an omega. With the help of heat suppressants and some serious denial, it’s not a problem ... until he meets Dean Winchester. And then it’s very definitely a problem. - Nive to Five Part 2 (PDF) ~ Life isn’t easy for a modern omega. Since he never spent much time fantasizing about finding a big, strong alpha to swoop in and carry him away from it all, Castiel is a little bewildered by his current situation. He also isn’t sure how to keep the firm from finding out that he’s fucking his boss’s best client.

Take a Look to the Sky by Chicktar (PDF) ~ A/B/O AU with Castiel and Dean as neighbors. Alpha Castiel has been pining for his neighbor Omega Dean. Castiel discovers Dean after he has suffered a shockingly horrific attack and all of Castiel's protective instincts kick in. With Dean carrying his own load of insecurities along with suffering flashbacks to the attack, how will Castiel convince Dean to let him in to help Dean heal and protect him from the potential of further violence from his attacker? Meanwhile, police detective Benny Lafitte struggles with trying to solve the case.