A/N: Set straight after Mannequin 3: The Reckoning (6.14) Please read and review. Pairings (over the course of the whole fic) dom/sub: Main: One sided Castiel/Gabriel, Sam/Gabriel (Sabriel), Dean/OFC (Eloa) and Lucifer/Michael Past: Lucifer/OFC (Eloa) Strong hints at One sided Desitel Summary: AU from 6.14. "Every angel has a dark side that they must embrace at least once. It is only a matter of time before the angel of Thursday finds his." Castiel goes a step too far after the return of a familiar face leads to the reveal of a whole new side in the angelic war but Cas wouldn't anything evil, right? DarkCas, various slash pairings, some dub/non con. More Warnings inside. Warnings: DarkCas, Straight couples, slash, angelcest, return of dead/trapped characters, forced grace bonding, mental/physical abuse, non con, consensual sex, innuendo, an OFC, swearing, spoilers for S5 and S6, AU of S6 and S7, violence, fighting, character death, memory loss, possible grace removing, enochian and some fluff/sweetness, innuendo, some OOCness. Disclaimer: I am disclaiming, you see how it says disclaimer? Good.

A/N2: Also, if you want to watch the trailer for this fic just search 'Claims Upon Our Hearts SPN Fanfic Trailer' and you should find it :)

"Sweet dreams are made of these,
Who am I to disagree?
Travel the world and the seven seas,
Everybody's looking for something.
Some of them want to use you,
Some of them want to get used by you.
Some of them want to abuse you,
Some of them want to be abused."- Emily Browning, Sweet Dreams

-Dean-

Dean groaned and threw himself onto one of the two queen beds of the room Sam and him were staying for the night. The motel had looked crappy from the outside and was just as bad inside but he didn't really care. It was better than some places they'd stayed in. Sam followed him in and sighed, dumping his bag down and sitting on the edge of the other bed.

"Today was officially shit," the elder announced, stretching out on his bed before rolling over so he was on his side to look at his brother. Sam nodded.

"Yeah, but at least we've got rid of the spirit."

"At the cost of that girl's life!" Dean growled back.

"We've been through this already Dean. There was nothing more we could do."

"Yeah but-" Dean began, sitting up properly now. He was interrupted by a bright flash from outside the window and a crash as something hit the ground in front of them hard, rolling across the room and crashing into the bathroom door in a blur of dark blue. Dean was surprised the door didn't smash at the force of the impact. Both brothers jumped up quickly, ready for action, when the 'thing' let out a low moan and they realised it wasn't so much as something as someone. Uncurling from their ball like position the person jumped up and Sam gasped at the familiarity of exactly who was in front of them,

"Gabriel?" The angel glanced at him quickly then at the window, running a hand through his hair nervously and straightening his navy shirt with a click of the fingers of his other hand.

"Hey kiddo," he greeted, crossing the room swiftly so he was at the room door in half a second. Sam took a step forward with a frown, going to speak but Gabriel cut him off, waving a hand at him. "Gotta run. I'll explain later…maybe…"

"You're not going anywhere," A cold voice said from by the window. Gabriel froze in his position, one hand on the door knob, and the Winchesters whipped round to face the speaker, confused and unsure of themselves. Dean's eyes widened at who the source was, his expression similar to that of Sam's just seconds before.

"Cas?" he asked uncertainly. The new arrival ignored him, taking a slow step forward.

"Do not make this difficult Gabriel," Castiel continued. "It would harm my cause to hurt you." The archangel suddenly broke from his spot at the door, glaring at the other seraph with furious eyes.

"Sorry to be the bearer of bad news brother but I'm going no where with you," he snapped. Castiel didn't flinch at his expression or tone but the brothers did, Gabriel sounded much more than just infuriated. Something in his voice made him sound down right deadly. Nervously Sam stepped forward.

"Look guys, I know that you're both really-" he didn't get to finished his sentence before both him and Dean were thrown against the wall above their respective beds.

"What the hell?" Dean yelped struggling as an invisible power left them floating helplessly.

"I am sorry to have to do this," Castiel told them, not even sparing them a glance as his eyes fixed on Gabriel. "But I cannot allow you to get in my way."

"They know I'm back now Cassie," the archangel hissed viciously "You can't keep the truth hidden anymore!"

"Truth? What truth?" Sam asked, copying his brother's actions against the threads of magic holding them in their places. Castiel smiled slightly and shook his head at them as Gabriel attempted to continue.

"He's found a way to beat Raphael in the war and he's going to-" Suddenly he fell silent, almost as if his throat had closed against him and his amber eyes widen as he looked at Castiel in shock. Dean and Sam both followed his panicked gaze, wondering why he looked so afraid.

"You are not as powerful as you once were," the younger celestial spirit explained smugness colouring his tone. "And, as God brought you back due to my prayers, he has gifted them to me making you more susceptible to mine, hence why you are having difficulty with flight. Now, you will come with me." Shaking his head Gabriel took a step backwards, challenge in his eyes. Castiel sighed loudly at the action and Gabriel tilted his head to one side as he drew out a familiar silver knife – an archangel's blade. Sam's eyes widened, realising exactly what the weapon implied for the arguing angels. The younger of the two, however, glanced at it indifferently, his own blade sliding into his hand from the arm of his trench coat.

"You want me?" Gabriel asked dangerously, his voice returning as the subject diverted to what Castiel deemed as safer ground. "Try and take me." In his position stuck on the wall Dean swallowed as Castiel's jaw twitched slightly in response. The line was something out of a cheesy movie to be sure but the way that Gabriel said it made it more terrifying than funny. It was clear that the angels were serious. This was no game – this was war. Without warning Castiel attacked, knife glittering as he lunged forward to slash at his opponent. Gabriel jumped back swiftly, just missing the hit in a well practised movement and the Winchesters flinched, staring as the fight continued.

The first move was the only one they truly saw. The rest were blurs of colour as the angels picked up their battle until they were at an incredible speed, seeming to be evenly matched now that Gabriel's powers were ineffective against the other man. It wasn't until the blurs began to get closer to the wall opposite them that the brothers could see who had the upper hand. The blot of tan that was Castiel was the one leading, the navy shadow of Gabriel being herded into the corner where wall met wall. Sam briefly wondered whether to shout out – warn Gabriel before he was trapped but something stopped his tongue. He blinked rapidly, eyes flickering to Dean who looked like he was struggling with the exact same problem. With a shiver of horror he realised what was wrong. Castiel must have silenced them just as he had with Gabriel moments before. He fought against his invisible bonds with even more rigor now. He didn't know what the angel was up to but he knew that this had to be wrong. His struggles proved useless and he bit his lip as the two blurs suddenly stilled, returning to their usual visual shapes. Castiel had both blades now, one held to Gabriel's throat.

"You will come with me now," he ordered coldly. Gabriel smirked but the brothers could tell it was false. He was trembling, defeated and afraid but they still couldn't understand why. Castiel was acting oddly but they weren't sure why it would warrant such a strong reaction.

"You think I'll do what you say just because you beat my ass?" the elder angel said scornfully, his hands pressed close to his sides. There was silence for a moment and the Winchesters both stilled in their useless efforts when they realised they would not be able to help the archangel. Castiel smiled slowly amusement dancing in his eyes, not looking away from his captive.

"No. I think you will do what I say because you are mine," he replied dropping the knife that was not at Gabriel's neck. Sam and Dean both frowned, unsure of what he was doing. Gabriel seemed to know, however, and shrank back closer to the wall.

"No!" he growled before trying to dart away at the revelation that only an angel could understand. Castiel blocked him at a similar speed, dropping the other blade and slamming him against the wall. Gabriel paused for a second, disorientated, before moving to make another attempt but froze when Castiel magically plunged an arm into his chest in haste. Light swirled around the entry point brightly and the archangel choked back a sob, sagging backward slightly against the wall as he repeated his rejection. His head smacking painfully against the hard plaster as he did so. "No…" The word had lost its power now and Dean and Sam could see something in him changing. Breaking. The sound was almost a plea, breaking off to a whimpering noise that they had never heard any angel make before.

"Cas, for fuck's sake, stop it!" Dean managed to shout out. The angel ignored him pointedly and moved his arm up a little, wrenching another pained gasp from Gabriel's throat.

"Castiel please don't do this," the archangel begged, voice cracking with the strain of what the other was doing to him. If he was human he knew that his soul would have been crushed by the force being used against him and he was thankful he was safe from such torture. Small mercies he guessed. However, the overwhelming weight was on his grace instead, keeping him in place for what was next on Castiel's agenda – his submission in a mate bond. Something Gabriel would never allow if he had a choice but Castiel was going to force on him with just a few words of Enochian. He was only briefly aware that the Winchesters were there to see his degradation at this point and willingly to do anything to prevent it from going further. "I'll return to heaven, help you achieve your goals, learn to love you as you want me to and even die for you in battle if I must but only if you just stop. Let me keep my will." Castiel shook his head, voice rough as he replied.

"You made your choice when you ran Gabriel and cannot change it. Therefore, I will not change mine." As soon as the denial had fallen from the angel's lips he clenched his hand fully around Gabriel's grace, ignoring the yells of the two humans still stuck against the wall just metres away. The messenger of the lord let out a soft cry of pain, knowing resistance was pointless at this stage and letting the familiar language of heaven washed over him as Castiel recited the binding spell of a dominant mate. "Coraxo oiad monasci ol oiad ge-iad olani plapli ol nostoah in io-iad oe olani ol booapis ol gemeganza od noasmi ol hoath." At the final word the elder angel closed his eyes slowly in shamed acceptance, sagging forward into the other man's arms limply when he retracted his hand from his grace and chest. His legs felt like jelly and he was in no shape to deny his place anymore, especially with the spell complete.

"I hate you," he muttered into Castiel's ear his head spinning as Castiel let go of his grace. There was silence between them for a moment; the protesting voices of the Winchester brothers fading further into the background as the younger celestial spirit smirked slowly, yanking Gabriel's head back by his hair and whispering more Enochian in his ear.

"Crp ol g-chis-ge ladnah in Gabriel, crcrg donasdogamatastos sonfa netaab oadriax," The archangel bit his lip to stop himself from groaning, relaxing further into Castiel's grip in submission. He wouldn't fight for himself anymore. He doubted he even could.

"Amiran," he muttered in woeful agreement quickly silenced by the crashing of lips down on his own, Castiel's tongue pillaging his mouth as he pleased. When the younger seraph pulled away Gabriel blinked, noticing a flash of brown in the opposite corner of the room. It was only there for a moment but it confirmed that there was still hope for him, even after being claimed. Brown meant brunette and brunette meant Eloa. (Although he would never have taken her appearance as a good thing before the failing of the attempted apocalypse.) Castiel hadn't noticed the blur of colour, which Gabriel supposed didn't matter too much for the dominant one in the short term but would in the long run. Turning to Sam and Dean, who were still held at the wall through angelic power, Castiel kept one hand fisted in the archangel's shirt and began to address them.

"When I release you from your bonds you will not attack," he stated simply "And you will not move closer to Gabriel or to me." The two brothers nodded in shock and Gabriel suddenly realised that they'd just witnessed him and Castiel 'making out' as it were. His mouth twitched into a small, barely noticeable smirk – and people thought the Winchesters were erotically co-dependant on each other. Obviously they didn't know angels were much kinkier. Castiel tilted his head a fraction to the left and broke the spell holding the humans. They dropped down on their beds immediately recovering in seconds and jumping to their feet.

"What the fuck is wrong with you Cas?" Dean demanded, gesturing wilding at Gabriel to emphasise his point. "You just…I don't even know what you just did but I could tell that was wrong man!"

"I have claimed Gabriel. It is normal for angels to bind their submissive partners to them. There is nothing 'wrong' with doing so." Gabriel fixed his eyes to the floor in shame at Castiel's blunt and oh so true comeback.

"Submissive partner?" Dean repeated incredulously "Dude, there is nothing submissive about the guy. Let alone gay."

"The first bit is true," the archangel muttered "But the second not so much. I have no preference as such. Not that it matters now." He was well aware of how defeated he sounded. Sam stared at him for a moment before speaking up.

"Reverse it," he ordered, glaring at Castiel.

"I will not. I need him within my control."

"Yeah, 'cause that's all you want the bond for," Gabriel chipped in sarcastically. Sam sticking up for him had hit something within the angel turned trickster. The forced mate connection had not corrupted his grace yet, although he knew it would simply because it had been involuntary on his part; the tie between them would make him submissive without him surrendering to it before he was compelled to.

"Yeah, we did see you snog him just a minute ago Cas and he didn't look particularly willing," Dean added, gaze flickering between them as Castiel's hand tightened in Gabriel's shirt.

"Whether I merely want it for control is none of your concern," he snapped.

"Actually it is," Sam argued. "Gabriel came to us when you were chasing him. He wants our help and so we're going to give him it." The archangel gave them a grateful smile which quickly fell when Castiel let out a soft growl.

"You will not remember seeing him to help," he told them, freezing Gabriel in position with a flick of his hand and then placing two fingers to each of the Winchesters heads before they could react. They fell back onto their beds unconscious immediately, memories of the last hour erased so they wouldn't challenge him again. An uncharacteristic whimper fell from Gabriel's lips at this, knowing that he would receive no rescue from the brothers now. Castiel turned back to him with a smirk. "And now you will come with me." Gabriel unfroze suddenly at his words and stared at the floor in front of him.

"I don't really have a choice, do I?" he asked, looking up into the other man's eyes.

"No, you don't," the younger confirmed, taking hold of his forearm in a tight grip. Gabriel sighed, glancing at the Winchesters sadly.

"Let's go then."

A/N3: The spell and other phrases have been translated into Enochian by - the online translator. In English the spell reads as "Under the name of the Lord I take you as mine forever in time to serve my will and be my love." While the phrases that follow are "But you are now mine, Gabriel, until hell reigns over heaven" and "Yours"