Title: Happenstance
Author: Fangirling_FTW
Artist: Zoe
Rating: Explicit
Pairings: Castiel/ Dean Winchester
Wordcount: 68000
Warnings/Tags: Alpha/Beta/Omega Dynamics; Alpha!Cas; Omega!Dean; Canon-typical violence; angst and fluff; non-explicit Mpreg; mating cycles/in heat; Alternate Universe
Posting: 11/23/2018
Summary:
Castiel had retreated to a life of solitude- just him and his cousin on a farm, away from the stares and smells of a society that either pitied or shunned him.
A fault in a car engine and it’s charismatic driver, Dean, rip Castiel from that quiet life and force him to open his eyes to a much larger world- and the fight to change it.
“Hey, I heard shout- Sam?!” Cas instinctively stands between Dean and the stranger, his mind focused on danger.
“Dean!” the stranger calls, his alpha scent calming slightly. Dean tries to move past Cas, but Cas’ body moves of its own accord, cutting Dean off from the other alpha.
“Cas, what the- oh, shit. Hey, Sam, give me a second.”
“Dean-”
“I said give me a second! You both smell like you’re going to kill each other.” Dean steps into Cas’ line of sight, running his hands over Cas’ face. “Hey, Cas. Can you hear me?”
“Dean,” Cas hears his chest rumble. He grabs hold of Dean, pushing him back a few steps into the trunk of the Impala.
“Easy, alpha, easy,” Dean gasps, and Cas breathes in Dean’s scent, the red starting to fade from his vision. “It’s okay, I’m safe. It’s Sam, my brother, Sam. Remember? I told you about him?”
“Sorry,” Cas sighs, dropping his head against Dean’s chest as the red haze fades. “He, he must have smelled you on me, he came after me-”
“Alright, we’re alright.” Dean squeezes his shoulder before turning to face Sam.
Dean’s scent immediately changes, turning sour as he approaches his brother, and punches Sam in the face.
“Dean, what the hell?!” Sam snaps, holding a hand to his cheek.
“I could ask you the same thing! Since when do you just walk up to a guy you don’t know and start a fight?!”
“Since he smelled like you! He’s an alpha what was I supposed to think?”
“I can take care of myself!” Dean grumbles.
“I know, okay, I’m sorry. Did you really have to punch me, jerk?”
“Course I did, bitch, you deserve it,” Dean huffs. Both brothers half smile and the tension seems to break, the anger leaving their scents. “Sam, I had to get out of there, at least for a day or two.” Dean looks over his shoulder at Cas. “And I kind of stumbled on something out here.”
“I see that.” Sam gives Cas a small smile.
“This is Castiel. Cas, this is my baby brother, Sam.” Sam offers his hand, grumbling something about ‘not a baby’ and Cas takes it.
“Hello, Sam. My apologies for the display.”
“It’s fine, I did swing first. Can you blame me?” Sam’s voice is genuinely apologetic, and Cas frowns at the sudden burst of anxiety from Dean.
“Um, I’d say you’re a bit overprotective,” Cas admits.
“Wait,” Sam takes a deep breath through his nose, his eyes widening comically. “You haven’t told him?!”
“I was about to, actually, until you showed up and threw a wrench in that plan,” Dean grumbles, embarrassed and nervous. Cas looks between the brothers
“Tell me what?” Dean sighs heavily, turning to face him.
“This doesn’t change anything,” Dean insists. “Everything I’ve done, everything I’ve said…none of it changes.”
“Tell me what?” Cas repeats.
“Cas…I’m not a beta.” Cas nearly laughs because he definitely wasn’t an alpha-
Oh.
Oh.