1 - 20 of 57 Bookmarks by Undercas12
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Summary
Some guys don’t know how to take no for an answer. Lucifer is one of them.
Most people in Dean's position would do something civilized, like threaten to flatten Lucifer's snooty face with a lump hammer or file a restraining order.
Instead, Dean concocts a scheme to make out with the hot (and weird) philosophy major that his buddy Ash buys weed from.
It's not a gay thing, it's a proving-a-point thing!
(Okay. Turns out, it might be a gay thing.)
Bookmarked by Undercas12
07 Nov 2025
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Dean's got no complaints. He's got a really cool job. He's married to a fucking amazing guy, even if Cas is an accountant. He and Cas have got a mortgage and a two-car garage, big enough for even Baby to rest her skirts. He's livin' the dream.
Too bad it's all based on one really big lie.
'Cause Dean's name isn't really Smith. He's not really a firefighter or a paramedic. He's the last thing from a hero, in fact.
And contract killers make enemies.
- Language:
- English
- Words:
- 16,697
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 58
- Kudos:
- 504
- Bookmarks:
- 113
- Hits:
- 3,510
Bookmarked by Undercas12
22 Sep 2025
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Summary
In a world where being dominant or submissive is part of your biology, Dean Winchester is a sub in trouble. Resistant to his submissive nature and the role society expects him to play, Dean fights against his body’s instincts until he’s sent to Purgatory—a high-class facility meant to train subs and help them find their perfect match. Skeptical and wary, Dean warms up to the program for one reason, and one reason only: his trainer, Castiel Novak. Castiel is the poster-boy of dominance, a workaholic outside the playroom, and probably the hottest Dom Dean has ever seen.
As their bond becomes more passionate and profound, the boundaries between them blur and feelings begin to surface. But not everyone approves of their powerful connection…in fact, someone might just do anything to stop it in its tracks.
- Language:
- English
- Words:
- 142,500
- Chapters:
- 20/20
- Collections:
- 1
- Comments:
- 2,286
- Kudos:
- 3,083
- Bookmarks:
- 871
- Hits:
- 129,645
Bookmarked by Undercas12
21 Sep 2025
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Summary
Dean is a professional sugar baby and is very happy living off what his four Daddies give him and never wanting anything more, thank you very much. Meanwhile, Castiel only ever aspires to be the best.
Or,
The one where Dean experiences firsthand what a diff’rence a week makes.
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Summary
Original prompt: I have nothing specific your work is amazing
Or,
The one where Dean only wants his baby brother to do good at uni! He can’t help it if one of the Professors is also his wet goddamn dream. That’s just a perk.
Series
- Part 3 of zation's 10-year anniversary
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Summary
Original prompt: So TFW are going to a bar after a successful hunt and Dean thinks it’s time for another one night stand (because the one he really wants clearly doesn’t want him back and is his best friend) so he flirts with a woman and leaves Sam and Cas alone at the bar. But after a while he looks over and sees that Sam is gone (flirting on his own) and beside Cas sits a man that is too close for his liking but he tries to ignore it until he can’t because the man is still sitting beside Cas and Cas is still talking to him and is that a smile??!!! He’s laughing!!! When was the last time Dean could make Cas laugh??!!! And what is even so fucking funny??? While Dean is watching his best friend (and the one he really wants) getting picked up and not noticing the girl he talked to gone, Cas enjoys the attention he’s getting from this handsome man and when Dean can flirt and fuck with others why can’t he?
Or,
The one where Dean might be letting his feelings get the best of him, to great results.
Series
- Part 2 of zation's 10-year anniversary
Bookmarked by Undercas12
01 Jul 2025
Bookmarker's Notes
Love when C asks if he wants to kneel for him.
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Summary
Written for the the Spn_Masquerade prompt: in a bsdm world it's normal to put your sub over your knees and spank him if he missbehaves. Dean's master fingers/fucks him until he comes while everyone is watching (after he has to clean it up).
https://spn-masquerade.livejournal.com/8997.html?thread=3487013#t3487013
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Summary
For the Secret Lovers Exchange and baredwolf. Far below their usual levels of deductive reasoning, it takes until Christmas Eve for Team Free Will to solve the case of the mysteriously mutual sex dreams.
Bookmarked by Undercas12
27 Jun 2025
Bookmarker's Notes
I already left kudos?! I don’t remember this at all! Bookmarking to always know the yummy Christmas goodness.
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Summary
Formerly known as "Wincestiel drabbles written for Tumblr"
In the third story, Dean is Persephone, Sam and Cas are the Gods of the Underworld. You know where this is going.
In the fourth story, underage omega!Dean finds a new home with bonded Alphas Sam and Cas.
In the fifth story, Sentinels Novak and Wesson finally find their reluctant Guide Dean Smith.
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Summary
Cas asks the Winchesters on a date. Yes, both of them.
Series
- Part 1 of The Three Body Problem
- Language:
- English
- Words:
- 36,843
- Chapters:
- 1/1
- Comments:
- 264
- Kudos:
- 2,129
- Bookmarks:
- 403
- Hits:
- 33,146
Bookmarked by Undercas12
19 Jun 2025
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Summary
16 months ago, Cas became human.
12 months ago, Cas left the bunker and a broken-hearted Dean behind.
Now they must work a case together, where married couples are dying mysterious deaths and the only way to earn the neighbors' trust is by pretending to be married. Slowly, Dean finds that he loves being in a relationship with Cas, fake or not, and Cas finds his loneliness retreating, despite the harsh reality looming right around the corner. As Dean and Cas navigate this fake, but all too real, relationship, can they find the monster that is on a mysteriously motivated killing spree before it’s too late?
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Summary
There's something going on with Cas. Dean is determined to help him through it, in whatever way he can.
He might end up with more than he bargained for.
OR: Dean helps Cas scratch an itch. As it were.
- Language:
- English
- Words:
- 26,153
- Chapters:
- 2/2
- Collections:
- 8
- Comments:
- 732
- Kudos:
- 14,742
- Bookmarks:
- 2,743
- Hits:
- 173,338
Bookmarked by Undercas12
09 Feb 2025
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Summary
Throughout his life, Dean's had to stave off heats during hunts and otherwise, for fear of showing off a side long-since hidden--his tendency to nest with any bedding he can find.
Until, after finding comfort in his home in Lebanon for so long, his hoarding instincts kick in the backwoods of Tennessee for the first time in months.
- Language:
- English
- Words:
- 5,312
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 51
- Kudos:
- 3,083
- Bookmarks:
- 376
- Hits:
- 38,031
Bookmarked by Undercas12
21 Jan 2025
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Summary
Brittle and battle-worn, Cas looks at him over coffee one morning and says, "I need to go," and Dean instantly knows that he's not coming back.
He's not really sure how he knows it, but he does. It settles into the pit of his stomach, curling hot and tight like something he instinctively wants to tear out with his bare hands. He takes a breath, and it gets stuck in his throat, hitching there. It hurts, hurts, hurts when he finally exhales.
"Yeah," Dean says, "of course you do," and he nods jerkily as he looks down at his phone. He doesn't say goodbye. He doesn't look up from the screen when Cas gets up and leaves the room. He doesn't finish his coffee, or move for a long time.
By nightfall, Cas is gone.
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Summary
Dean and Cas finally get that date they've been looking forward to. Things move quickly once they settle down for a late night meal at Dean's favorite diner, when an emergency call to Cas' cellphone abruptly ends their evening, leaving Dean lost in a haze of heavy emotions. Thoughts and feelings he's way better at ignoring than dealing with assault him, confirming his notions that all Doms are the same and he's really, *really* good at finding the shitty ones.
Series
- Part 3 of String Theory
Bookmarked by Undercas12
04 Oct 2024
Bookmarker's Notes
This might be my favorite entry of a favorite series I already have returned to read several times since it published. This will easily join my most read.
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Summary
Dean's life is beautiful. He wants for nothing, has the pleasure of his family and friends, and is desperately, irrevocably in love with his husband. Everything is perfect, just as it should be.
Then he wakes up.
- Language:
- English
- Words:
- 53,828
- Chapters:
- 7/7
- Collections:
- 1
- Comments:
- 698
- Kudos:
- 6,092
- Bookmarks:
- 1,656
- Hits:
- 92,902
Bookmarked by Undercas12
27 Sep 2024
Bookmarker's Notes
A little overwritten in parts but overall a heartbreaking love story. Dean is married to Cas for 40 years in the Djinn dream with kids Jen and Gabby.
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Summary
The girl waves at Castiel, her bangles tinkling cheerfully. “Did you really let Claire get her eyebrow pierced?”
Castiel blinks and glances at his daughter. He’d assume that would be obvious, since she's still wearing her current favorite—a yellow-gold sixteen-gauge curved bar, with tiny cone-shaped spikes on either end. “Yes?” he finally answers. What a lot of fuss about a tiny piercing.
“Well, so what if she wanted a tattoo?” Emma presses. “Like. Just a little one. You wouldn’t have her sneak around and go to some scratcher, would you? You’d take her yourself and stuff. Since you know people in the industry. That'd be the right thing to do, yeah?”
Castiel’s eyebrows rise. Claire smiles, smug and pleased with herself.
“Um. That’s… I don’t…” he flounders.
“What the hell. Kiddo, I told you ‘no,’ so now you’re tryin’ to get your friends’ parents to tell you 'Yes?'” a warm, deep voice growls over Castiel’s shoulder. “What’s the matter with you?”
(In which tattoo artist Castiel meets the man of his dreams at his teenage daughter's school night.)
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Summary
Dean has always wanted to try BDSM, specifically subbing, but being from a rural town he never thought he would have the opportunity.
Or,
The one where Castiel has never laid his eyes on someone so delicious before.
- Language:
- English
- Words:
- 40,788
- Chapters:
- 8/8
- Comments:
- 642
- Kudos:
- 1,325
- Bookmarks:
- 258
- Hits:
- 23,554
Bookmarked by Undercas12
12 Jul 2024
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Summary
This is an A/b/o story, Alpha Cas/omega Dean
Canon divergent as of episode 11.3 The Bad Seed:
Castiel is inflicted by Rowena's mad dog spell. But the deeper workings to it are a little more complicated than our boy's first thought. Fortunately, there's a solution. (Also, a sneak peak into the Winchester's childhood courtesy of Sam's epic memory)warnings: oodles of poorly written smut, dubcon, john winchester’s A+ parenting, rampant typos, h/c, Dean being so very Dean
Bookmarked by Undercas12
15 May 2024
Bookmarker's Notes
Interesting world building and its effects on the relationships in this one.
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Summary
Castiel has lived a sheltered life tucked away in the high society of Savannah, Ga. When his mate dies in childbirth Castiel is left with a daughter to raise alone and a home that is just too big. At the suggestion of his family he enters the world of Omega claiming and discovers that perhaps his real mate, his one true love is a tall green eyed stunning Texan. The man is a stranger and yet as they navigate this new relationship together he finds out that sometimes you have to just enjoy the cherry pie.
- Language:
- English
- Words:
- 101,733
- Chapters:
- 51/51
- Collections:
- 1
- Comments:
- 2,752
- Kudos:
- 4,125
- Bookmarks:
- 1,022
- Hits:
- 117,871
Bookmarked by Undercas12
18 Apr 2024
Bookmarker's Notes
I’ve been looking for this for days. Can’t believe I didn’t have it bookmarked since this is at least the fourth time I’ve wanted to read it.