I love love love your vampire!cas/vampire!jimmy/consort!dean fics! I have to ask though: for as long as Cas and Jimmy have been together, surely there must have been some jealousy on Jimmy's side...? This is just a really roundabout way for me to ask for jealous!jimmy, reassuring!cas and comfort sex :)
((Idk if you wanted Dean but i don’t think Jimmy would be so jealous all the time by the time Dean came around so here we go~~)).
Jimmy should have heard him coming, but he was still new to this. Five years wasn’t enough time to become used to being a vampire, attuned to every inhale and heartbeat and movement of the air. Sometimes he had to shut down on himself just to think, let alone concentrate on anything else.
But the scent, the sharp gaze of his big brother and his Alpha, speared him within a moment. It all faded away until there was nothing but the cool stone at his back and Castiel at his front, one hand pressed lightly to his collarbone - not even pushing, not really, just resting there. But it was enough to keep Jimmy pinned and caught like a fly in a web.
"What’s wrong?" Castiel demanded, and Jimmy shivered at the unique thrum of his Alpha’s commanding voice. When they’d been human, Castiel used to follow Jimmy into old abandoned barns and through the woods and into the village when their mother had expressly forbidden them to go. Jimmy had been the one to coax Castiel into his bed with soft whimpers and warm hands and desperate little jerking motions under the blankets.
Now it was all different; Castiel in control, stern, stoic. He was every inch the trained leader that their father had moulded him into
Jimmy growled, upper lip curling back briefly, showing his teeth. “Nothing,” he said, tasting the lie like something sour. Castiel’s eyes flashed, disapproving, knowing Jimmy was lying to him.
His hand pushed a little harder, pulling Jimmy’s skin across his bones, pinching and aching. “What’s wrong?” he asked again, commanding and stern.
Jimmy sighed, tilting his head back. “I don’t like watching,” he said after a long, long while. Castiel had the patience of a saint with everything except his Children. Since Jimmy had fallen under that category five years ago, everything was off balance.
The Alpha blinked, tilting his head. “Watching?”
"Yeah." Jimmy swallowed. The scent of his Alpha teased at him, making his teeth itch in his gums. He’d only ever fed from Castiel, could feel the blood-addiction burning at the back of his throat, begging for another hit. "When you feed off of them. I know you need to, but I don’t like it." He narrowed his eyes, raising them to meet his brother’s. "Do you have to be so public about it?”
Castiel’s lips quirked up in one corner in a smirk. “What would you have me do?” he taunted, removing his hand and allowed Jimmy to straighten. “Become a vegan?”
"That’s not what I meant,” Jimmy growled. “I just…”
Something in his tone must register with Castiel - Jimmy is not simply his Child and his beta, but his older brother. Theirs is a bond that will never be simple, or shallow. “You just…what?” he asked, reaching out again to gently brush his thumb across Jimmy’s jaw.
Jimmy’s hand curled around his wrist. “You’re mine,” the beta vampire hissed, nostrils flaring, teeth bared.
Castiel blinked, a small furrow forming between his brows. “Of course I am,” he said, as though anything else would make no sense at all, and Jimmy huffed a breath and let go of him, shaking his head. “Jimmy - beloved - of course I’m yours. Who on Earth told you otherwise?”
It was hard to think with Castiel so close to him, so the beta vampire just shook his head and forced a smile to his face. “It doesn’t matter,” he said, breathing deeply, closing his eyes. “It doesn’t -.”
He stopped, his breath stuttering when he caught the scent of blood in the air. Castiel was looking at him intently, two of his fingers now bloody from where they had dug into his own neck, splitting his skin apart in two little lines. Jimmy licked his lips, throat suddenly so dry.
Castiel cupped the back of his neck with his bloody hand and pulling Jimmy to his throat. Unable to resist the blood call (and never wanting to), Jimmy clung to his brother tightly, sealing his lips around the little wounds and adding his own bite to them.
With the blood bond came Castiel’s thoughts, his emotions; Jimmy moaned softly, pushing his body against Castiel’s in search of the heat and friction he always sought from his little brother - Castiel pushed back until Jimmy’s shoulders collided with the stone wall again, earning a soft moan from the beta vampire.
"You are the only one who has this, now," Castiel said, his voice thrumming under Jimmy’s mouth. "Since I changed you, no one but you has had me like this, Jimmy."
And Jimmy knew it was true, objectively, but it was still really fucking nice to hear it - Jimmy needed Castiel to survive. He knows for a fact that Castiel does not need him.
The fingers on the back of his neck tightened. With Castiel’s body caging him in, strong arms wrapped around him and blood in his mouth, Jimmy felt completely enveloped by his older brother, safe and protected and cherished in his hold.
Castiel let Jimmy drink his fill, and when he was done the Alpha cupped his brother’s face and gently licked the lingering blood away.
"I love you," Castiel said, kissing his brother again and again until Jimmy sighed and smiled against his mouth. Castiel rested their foreheads together, one hand sliding down Jimmy’s shoulder, his arm, and laced their fingers together. "Let me show you how much."
Jimmy used to be the one who led Castiel into mischief, who coaxed and guided and took control. Now, it was Castiel’s turn to lead, and Jimmy’s to willingly follow.