This is different from the other fics I've written so far, so PLEASE heed the warnings: Godstiel/bottom!Dean, spanking, non-con.
That being said, thanks to my beta CastielandMexx for helping me with a few details and without whom I might not have published this.
"Bow down and profess your love unto me, your Lord, or I shall destroy you!" Castiel told the three hunters, looking at them and expecting them to obey him, now that he had declared himself their new god.
Sam and Bobby exchanged quick looks and then bowed down only minimally but enough to make Cas grin in satisfaction and Dean to look back and forth between the other two hunters in disbelief.
"My Lord Castiel," Sam started to say in a voice that was barely more than an embarrassed whisper but Cas cut him off with a dismissive wave of his hand and then zapped him and Bobby away.
"Where did you send them?" Dean demanded, advancing on Cas who immediately stopped him with a look.
"They are at Bobby's," Cas replied, even though he didn't owe Dean an explanation.
"What about me?" Dean asked, starting to get afraid at his friend's behavior. He didn't understand Cas anymore. The ex-angel seemed ready to snap any moment.
"You haven't bowed to me," Cas simply stated, giving Dean a last chance to remedy that fact.
"And I won't. You are not my god. You are my friend who needs some serious help," Dean told him angrily. He flinched when Cas made a sudden movement though. For a second Dean had forgotten how dangerous Cas was at that moment but he couldn't pretend like everything was alright. He had to help his friend. He would never forgive himself if he didn't at least try.
"You defy me even when you have just witnessed what I can do? When you have seen proof that I am not a mere angel anymore? You are nothing but an insolent child, but you will learn and you will profess your love. I am your new god," Cas raged and Dean shrunk back against the cold white tile wall as Cas moved closer to him, grabbing him by the front of his shirt.
"And do you know what happens to insolent, disobedient children?" Cas growled, his nose almost touching Dean's, his blue eyes blazing with cold fire. Dean just stared at him, feeling completely out of his depth now. He had no idea what this creature that Castiel had become would do and what answer would be the one to save his life. So he decided it'd be best to stay quiet and wait.
"They get punished," Cas very matter-of-factly answered his own question and before Dean knew what was happening he found himself bend over the metal stretcher in the middle of the cellar they were still in. He tried to lift his upper body only to be pushed back down again by a firm hand on his back.
But this time when he hit the metal he was no longer dressed and shuddered at the sudden cold against his skin. When he realized that he was in fact completely naked, it had taken a moment for him to process this, he started to really struggle.
"Cas, I get it. You're God. Now let me up and zap me to Bobby's," he pleaded trying to push himself up again. But the hand on his back was firm and suddenly his arms were pulled back and his wrists crossed behind his back. Cas wound his tie tightly around them securing Dean's hands at the small of his back.
"Cas…," he said weakly but the cold stare from the now strangely unfamiliar hard blue eyes made him shut up immediately.
Cas walked a few steps away from the stretcher and started to take off his trench coat and his suit jacket, folding them carefully and neatly stacking the clothes in a corner of the cellar before walking back over to Dean. As Dean watched this his heart started beating faster and faster with fear and anticipation. The situation seemed surreal but he didn't dare protest or move again.
Cas stopped very, very close to Dean, his crotch pressed against the side of Dean's thigh and as the angel or god or whatever he was now rubbed himself against Dean, the hunter squirmed away to escape the unwanted touch. Cas stopped him immediately but thankfully the rubbing stopped as well, though instead Cas laid a hand on Dean's naked ass, lightly letting it rest there for a moment. The hand felt warm against his cooling skin and the sensation would have been pleasant had Dean not been so worried about Castiel's next move.
"I won't be too hard on you. I just want you to know what will happen should you disobey again," Cas said as he lifted his hand up high and then slammed it down hard on Dean's ass. Dean let out an undignified yelp at that, though more from surprise and humiliation than from pain. He hadn't known what to expect when Cas had talked about punishment but certainly not this.
And then the slaps kept coming, getting continually harder but Dean gritted his teeth and made no other sound. He decided to take his 'punishment' as a man and later there'd be hell to pay for Cas. Though how that would work out, Dean didn't know yet.
Finally Cas stopped and Dean let out a small sigh of relief. The stinging pain in his ass had been getting uncomfortable and even though it was nothing he couldn't endure, he was glad that it was over. As Cas stroked a hand across his cheeks it felt cool against his now burning and probably bright red skin.
But when Dean made a move again to get up he was roughly shoved back down onto the stretcher, just like before the spanking had started. Now Cas kicked his feet apart as far as they would go and then went even further by putting one hand on either of his cheeks, pulling them apart. Dean started to struggle again. This was way out of bounds now and he felt more exposed than he ever had in his life. Even though his dick seemed to kind of enjoy this helpless situation he was in, giving a small twitch and starting to harden, no matter how much his brain said he despised the situation and now also the creature submitting him to it.
For a moment Cas just stood there looking down at Dean taking in the reddened skin with satisfaction and also noticing the hunter's growing arousal, which matched his own. He enjoyed the sight and the feel of the hot skin under his hands but eventually he let go and stepped around the stretcher to stand next to Dean's head.
He grabbed a fistful of hair and forced Dean's head up with it. When Dean started to say something Cas quickly shoved some fingers of his free hand into the hunter's mouth. This was so unexpected that at first Dean didn't react at all but then bit down on the offending fingers as hard as he could in protest.
This got punished by a painful pull at his hair and a look from Cas that was so threatening and infused with the glowing power of the millions of souls inside him that Dean immediately went slack, not wanting to find out what other punishment the former angel might have thought about already. Triumphantly Cas slowly started to move his fingers in and out between the red lips, his movements getting faster and faster until he was practically finger-fucking Dean's mouth.
When he stopped Dean let his head fall back down onto the stretcher, grateful for the chance to relax the muscles in his neck and shoulders which had started hurting from the forced position his head had been held in. He didn't notice Cas going back around the stretcher until he felt one hand back on his ass pulling the cheeks apart once again, the other hand trailing spit-slick fingers down to his hole.
Dean squirmed at the feeling and the knowledge of what Cas was apparently planning to do to him. "No, Cas. Please stop," he begged when he felt a finger pressing against his entrance, slowly pushing past the tight ring of muscle.
He clenched his ass muscles, trying to keep Cas out but to no avail. The slick finger slowly but surely entered him and there was nothing Dean could do to escape the unwanted intrusion. "Relax, Dean. You're only making this harder than it needs be," Cas growled at him, voice thick with lust and moved the finger slowly in and out a few times before adding a second finger, making Dean gasp at the feeling of getting stretched.
Cas carefully worked Dean open, adding a third finger after a while. Dean gritted his teeth although he had to admit that, though strange, the sensation was not painful yet, not even as unpleasant as he had expected. But he did not ask for this. Cas forced it upon him and therefore he hated it and just wanted it to be over quickly even though his dick seemed to have a different opinion. It was now completely hard and longing to be touched.
But that was not what Cas had in mind. Instead he removed his fingers and quickly took off his pants and boxers, freeing his own very hard cock, which was already glistening with pre-come. He positioned himself at Dean's hole, nudging it, making the hunter hold his breath in fear.
Then Cas pushed in. Slowly at first to overcome the resistance, but once the head was in he pushed forward and buried himself fully in Dean's tight hotness with one powerful thrust. Dean released the breath he'd been holding, crying out at the pain and burning from Castiel's cock filling him so suddenly. The fingers had not prepared him for Cas' size.
Cas held himself in that position, leaning forward until his chest was flat against Dean's back so he could put his mouth next to his ear. "I told you I would destroy you if you didn't accept me as your new god. This is nothing, so you better do as I say or I will make good on that promise," he growled, feeling the human underneath and around him shudder at his words. With a smile he lifted himself of Dean's back and, having given him enough time to adjust to the cock in his ass, started to move in a hard but steady rhythm.
As the pain slowly subsided and pleasure took over Dean had to bite his lips to suppress a moan but he couldn't prevent his ass muscles from rhythmically clenching and unclenching and massaging Cas' cock as the self-proclaimed god fucked him mercilessly. Cas could feel the change in Dean, the reluctant acceptance of the pleasure starting to take over. He changed his position a bit to get a better angle and with the next thrust he slammed against Dean's prostate.
At the sudden intensified burst of pleasure Dean couldn't withhold a moan any longer and now that Cas hit his prostate every time Dean vocalized the pleasure he was feeling loudly. He could tell that he was close to the edge, even without having been touched. And Cas seemed to be close as well, because he was losing his rhythm and was grunting and breathing hard down on Dean's back. When Cas finally came hot inside him Dean thought he was ready, too. But for some reason he just couldn't take that final step.
As Castiel rode out his orgasm he used his powers to deny the human beneath him that same release. He wasn't done with Dean yet. When his dick was spent he pulled out with a wet pop.
"Cas," Dean complained, looking completely wanton now with the need to come almost overwhelming.
"What Dean? What do you want to tell me?" he asked, knowing exactly what Dean wanted but wanting to hear him say it out loud.
Dean remained silent, just moaned quietly and squirmed, trying to find an edge that would provide some friction against his aching dick. Cas watched him for a moment before grabbing the throbbing length to start stroking it slowly. Dean moaned louder and tried to thrust into Cas' hand but the touch remained light, just barely making contact and certainly not creating enough friction for Dean.
"Profess your love and I will let you come," Cas told him, giving Dean's dick a sharp tug that made the hunter's body jerk in response, before returning to his light stroking.
"Please, Cas…," Dean whimpered, the words mingled with groans and hard to make out. For a moment Cas thought that maybe Dean was already too far gone to even process what he wanted from him, but then Dean apparently gathered his thoughts.
"I won't," he managed to say before the rest of his words became unintelligible as Cas started to stroke harder, bringing him closer still but not close enough. Dean squirmed and begged for Cas to let him come but with his powers Cas just held him there, right at the edge of orgasm. Finally Dean couldn't take it anymore.
"Fine," he cried. "Whatever. I profess, nuuuh, whatever you, ahhh, want. Just let me coooo," he screamed the last part as Cas finally allowed Dean to come with a few quick, hard strokes of his hand.
Dean came harder than he could ever remember and as the waves of his orgasm washed over him they crushed him underneath their weight and he blacked out.
When he woke up again he was cold and alone, and sweat and come, his own on his stomach and Cas' running down his legs, were drying on his body making him feel sticky and dirty. He experimentally moved his hands to find them unbound and slowly he pushed himself up, his whole body aching and protesting the movement. Sore and stiff he walked over to the corner of the room where Cas had left his clothes in a neat pile, to get dressed.
Cas was nowhere in sight and he better stayed away because if Dean ever laid eyes on him again he was going to kill the bastard for what he had done to him or die trying.