Prompt: omega dean/alpha cas where they're just about to get mated and cas is teasingly wondering where to place his bite
“Hmmm, let’s see…” Castiel drawled playfully, giving Dean’s still sweaty and completely bare body a once-over. The clear amusement in his eyes had replaced the overwhelming desire of their mating mere minutes ago, since now that both of them were spent and their bodies united through Castiel’s knot, he had enough wits to tease Dean instead of wanting nothing more than making him scream. Which was for the best, especially seeing as in their throes of passion, Dean had asked -- no, begged -- him for the first time in his life to bite and properly claim him, crying out for his Alpha with tears in his eyes. And Castiel, mindful of not taking what might not have been given with proper consent, had offered to delay it for a bit by promising Dean he would claim him wherever he wanted him to if he still craved that bite once he was satisfied and still.
“Now, where should I place my bite?” Castiel continued, jokingly scanning the lines of Dean’s body in search for a proper place.
“Cas,” Dean sighed with a roll of his eyes. His Omega had always been of the impatient sort, which had endeared him all the more to Castiel.
“Yes, Dean?” Castiel asked lightly, not even bothering to hide his smile.
“You know where I want it.” Dean replied.
“Mhh, that, I do know,” Castiel confirmed, swivelling his hips just enough to make Dean gasp.
“And you know what I mean,” Dean pressed on, more breathless now. “You promised you’d bite me if-- y’know--”
“If you were a good boy for me and just waited a bit longer?”
“Yeah,” Dean nodded.
“And were you a good boy for me, Dean? Did you do as I told you to, trust me to take care of you, so that I can properly claim you now?”
“Alpha,” Dean whimpered.
“Answer my question,” Castiel said, giving Dean a small thrust without even meaning to.
“I was--,” Dean licked his lips, squeezed his eyes shut for a moment, fighting against his own demons and those many years of lacking acceptance for himself, “I was a good boy for you.”
“Oh yes, you were,” Castiel immediately agreed, pleased with Dean’s admission. His Omega never failed to make him proud. “A very good boy, indeed. Which means that you shall now have your reward.”
“Yeah,” Dean breathed out in apparent relief.
“But still,” Castiel continued, once again dipping into a more playful tone, “that doesn’t answer the question of where I should mark you, onto which part of your lovely body I should put my unmistakeable claim. Where I should bite you at last, make you mine.”
It was Dean’s turn to swivel his hips now, almost unwittingly seeking even more pleasure from his Alpha. The sweet little motion of his hips was as much of an indicator of how much he both hated and loved their little game as was his slowly returning erection.
Just how had Castiel gotten so lucky?
“So, I was thinking,” Castiel deliberated loudly, “ that I could put it on your thigh, hm? Make it so that it would stay our secret in public, but that any other Alpha trying to touch you would see and know -- know that you are mine.”
Languidly, he lifted Dean’s right leg over his shoulder, not just improving the angle of how his knot was situated, but also allowing him to press a series of kisses along Dean’s knee and thighs. Furthermore, the position thickened the sweet scent coming from down below and granted Castiel a clearer view of the stiffening Omega cock.
“Stop toying with me,” Dean grunted out, somewhere between annoyance and arousal. “You know I don’t want it on my thigh.”
“On your chest, then? High enough to not be utterly obscene, but at such a sensitive spot that there could be no doubt about the intimate nature of the claim?” He thought for a moment, for the first time actually giving consideration to that placement, and finding himself not wholly disliking the idea. “I could place it right over your heart. Right where you feel and think the strongest. The most stubborn part of yourself.”
With the hand not holding Dean’s leg, he now traced over Dean’s chest, halting right where he suggested his claim to go, and spreading his fingers over it, his big palm encompassing all of Dean’s left breast.
Moved, at once, by the strong and wild beating of his Omega’s heart, Castiel’s lips fell open and he could do nothing more than listen with his whole body and being. The heart’s rapid pace spoke of more than arousal, but of anticipation, too -- the utter excitement that could only ever stem from love, not a mere meeting of physical forms, and that swelled deep in the chest.
Lost as Castiel was in the heartbeat, he only noticed Dean moving when his Omega placed his own hand on top of his, intertwining their fingers. The gaze that Castiel caught spoke of the same feelings as the heartbeat, and mixed into them was a quiet determination.
“Alpha,” Dean said once again, more steady and at once more tender now. Dean had never been as beautiful as in that moment, when he titled his head to the side, confidently and trustingly baring the long line of his neck to Castiel, and demanded, “Bite me here. Bite me where everyone can see, and where everyone will know. Bite me where I can see and feel it at all times, as part of my own reflection in the mirror. Make me yours, Cas.”
And what else could Castiel do in that moment but cover Dean with his body and with kisses and drive not only the proof of his desire but his sharp fangs deeply into Dean’s body, as deeply as he could, and claim and love him over and over again?