Title: You Will Obey. You Can't Not.
Author: HigherMagic
Pairings: Demon!Dean/Castiel/Gabriel
Rating: PG-13
Word Count: ~2,400
Spoilers: Gabriel exists. Dean was in Hell.
Summary: Gabriel's furious. Dean and the thing that is inside of Dean can tell when the Archangel flies into the room, summoned there by Castiel who's currently pinned against a wall by Dean's hand – but it's not Dean's hand, because Dean's fighting, as much as he can. One of his eyes is black, the other green, and it's a weird effect, seeing both Hunter and demon inside of him, face twisted in a mix of anger and pain.
Notes/Warnings: Sequel to More Than Whole because people wanted to see some more Demon!Dean/Gabriel/Castiel. I wanted to make it porny but it just didn't swing that way. Sigh. Maybe next time.
Unbeta'd. All mistakes are my own.

Gabriel's furious. Dean and the thing that is inside of Dean can tell when the Archangel flies into the room, summoned there by Castiel who's currently pinned against a wall by Dean's hand – but it's not Dean's hand, because Dean's fighting, as much as he can. One of his eyes is black, the other green, and it's a weird effect, seeing both Hunter and demon inside of him, face twisted in a mix of anger and pain.

Castiel's choking – Dean's demon side is strong and relentless and the falling Seraph feels the dark power in his Grace, knows how very capable Dean is of killing him, or making him cease existence on this plane. The Seraph's blue eyes are wide and pretty and Dean cocks his head to one side, the dark side of him smiling in pleasure at seeing someone so pretty and powerful at his mercy.

"Gabriel," he purrs in a voice made of venom and razors, turning his black eye towards the Archangel, who growls at the sight of him. "You made it."

And tailed on the end of that line is a desperate plea; Help me. Stop me. Please.

Gabriel's powerful. So powerful. The presence can feel his pulsating Grace in the room and it rolls over and begs for it, not contented with following orders from what is essentially cannon fodder – Castiel. When Gabriel walks forward and presses a hand against Dean's neck, the demon side of him purrs, his eyes sliding closed but going completely black, the hand around Castiel's neck, holding him still, choking him as it tightens.

"Gabriel," Castiel growls out, panicked but stoic as well. Gabriel nods.

"You've disobeyed," he murmurs into Dean's ear, can feel it when the darkness turns like a loyal guard dog towards its master's voice, how it sits on its haunches and begs for attention and treats. But its master is not kind today – Gabriel is not merciful. Not with Castiel's death on his hands or the threat of it in Dean's blood.

A thread of Grace comes from the Angel and strikes Dean right in his heart. He gasps, eyes flying open green and bright and falls to his knees in front of Gabriel, hissing and snarling as the darkness inside of him fights back against its master's painful touch. He wants to fight and Dean's body's up and moving before the Hunter or the Angels can stop him – he's almost to the door before he's pinned. He can't move.

He looks up and snarls at the Devil's Trap painted onto the ceiling.

Whirling around, he can see Gabriel and Castiel staring at him with stoic eyes. Dean's own flash black. "Release me," he growls, baring his teeth that have serrated edges behind his face, and the Angels share a look. Amidst the rough, low echo of a growl of the presence's voice is Dean's, pleading, begging – Help me. Stop me. Please.

"You disobeyed," Gabriel repeats, stepping forward, and the demon-Hunter backs away, flinches when he hits the walls of the Devil's Trap and Gabriel steps right on in with him, unaffected. It burns when Gabriel touches him this time and Dean flinches away again, whining, apologetic – there are tears in his jade eyes.

"I'm sorry," he cries, but they all know he's lying – they know the presence is speaking for him and it won't do. It won't do.

"I told you that you will obey, and you will serve, and you did neither." Dean whimpers, trembling, but there's relief in his burning, wet eyes and he's curving towards Gabriel, seeking out the Archangel's power and the brand of his Grace against Dean's Hell-warm flesh. Gabriel's eyes flash to Castiel who steps forward as well. "Those who sin are punished, Dean," he whispers, grabbing a hold of the hair at the back of Dean's head and jerking the Hunter forward, and Dean stumbles but just manages to stay upright, colliding with the invisible barrier of the edge of the Trap. He whines again when Gabriel's hand shifts to the back of his neck and the Archangel pulls him once more, manhandling him until Dean's crouched in front of Gabriel, staring up into the creature's glowing eyes, and he's so powerful, Dean's darkness can only imagine how much glory there is inside that vessel, and his eyes go black at that. His mouth waters, and he whines again like a fucking animal. "Do you want to be punished?"

Dean feels amusement slide through him and he laughs – it's a harsh, short, sharp sound. "Depends," he purrs, drawing the word out, sinking his teeth into his lower lip and Gabriel's expression twists into a grim kind of dissatisfaction. He's furious and Dean can tell and it just makes the Archangel's hands burn hotter when they land on Dean's skin and pull him up.

Castiel's suddenly behind him and Dean can feel the heat of their Graces burning him where they touch, and he cries out, feeling agonized sparks of white go off behind his eyes. It hurts, fuck does it hurt – so much. The Hunter moans brokenly and wants to get away, to retreat, but they've trapped him in and there's nowhere to run.

He sinks his teeth into the side of Gabriel's neck and the Archangel shudders, grabbing Dean more firmly around the waist and Castiel's hands go to Dean's arms, holding him back, taking away his leverage and his fight and the darkness whimpers, rolling this body it has found and overcome. The Hunter that Dean is recoils from the thought of Angel blood in his mouth but the demon side of him just purrs, tasting the power and dangerous edge of purity and it cuts his own mouth open. Dean turns to the side and coughs up blood onto Gabriel's neck.

"Were you bored? Is that what this is?" Gabriel growls out, taking Dean's chin in hand and forcing their eyes to meet, and Dean whines, baring his bloodied teeth, eyes flickering black, green, black again. "Just testing the waters to see what I would let you get away with?"

"I don't serve machine gun fodder," Dean snarls. Help me. Stop me. Please.

Gabriel's expression changes – his lips twist up into a knowing smirk, and there's a dangerous light in his eyes that sets Dean's hair on end and makes him shiver with fear and awe. He feels like he'd fall if Castiel weren't holding him up. Gabriel's other hand strokes through his hair and Dean purrs, the darkness submits at the touch, wanting, lusting after that powerful Grace that hums under Gabriel's skin, and Castiel's as well. With them both there, all three of them within the ring of the Devil's Trap, it feels like they're amplifying each other and Dean's still powerless and the presence loves that. It whines with need, makes Dean purr and nuzzle into the hand at his jaw and the mouth he can feel at the back of his neck. It rolls Dean's hips back onto Castiel's, delights in the little shiver and flare of pheromones and desire it can smell.

Dean hums, smiling and leaning his head back, eyes closed and black again and Gabriel's eyes meet his brother's over Dean's shoulder.

"This can't keep happening," Gabriel whispers, stoic and serious. He can still see the phantom marks on Castiel's neck where he'd almost been choked.

Castiel nods. "What do you suggest?"

"We bind it. Fuse them both together and then claim them," Gabriel replies, removing his hands from Dean's face and the demon whines at the loss of contact but can't fight against Castiel's hold. Castiel's eyes widen at the suggestion, but it is the best one he can think of, and so he nods. "This will be painful for you," Gabriel warns, talking to both Dean and Castiel but only the Seraph nods, giving any kind of sign that he heard Gabriel. Dean's still just whining like a mindless, pained animal, Grace burning through him and the restrictions of the Trap make him feel confined and restless. He wants out.

Help me. Stop me. Please.

With a wave of Gabriel's hand the Trap disappears and Dean sags, black slamming into the backs of his eyes and he growls when the Angels' hands start to heat up, start burning like the fires of Hell and for one stupid, terrifying moment, Dean imagines that he's back there. The terror punches into his gut like a wrecking ball and, in response, the presence growls, snarls knowingly and fights against the restrictive hold of Gabriel and Cas, fights them for dominance over his body, because this body belongs to it, not to them.

"I remade him," Castiel growls into Dean's ear, and the Hunter shivers, locked inside his own body.

"I cradled him before he became you," Gabriel says just as lowly, his hand fitting perfectly along the line of Dean's neck, thumb dipping into the hollow of Dean's throat, and Castiel's hand moves to Dean's shoulder, sliding there imperfectly because of the way they're standing together.

Feeling the burn of their touch, Dean snarls, baring teeth that are serrated and covered in blood, and opens black eyes inside the face of a skull. "Release me," he hisses in a voice that has layers and octaves, that quivers with malevolence and hatred, and Gabriel's mouth twists in a grim smile.

He shakes his head and presses harder, and the Angels' hands burn up and brand the Hunter's body with their Graces. Dean screams, feeling the raw power of the Angels' Graces searing through him, but they're not helping him. They're hurting – God, it hurts so much. They're not separating this darkness from him – they're not banishing it, and he swallows back his initial feeling of betrayal, wanting to trust Castiel and Gabriel because they had helped…before.

There are two sides – the presence and Dean himself. The Angel's Graces are the white-hot current that solders them together, making them one solid unit, and Dean cries out at the raw razor feeling of the darkness scraping over his soul, locking them together like pieces of a puzzle. The Angels' make them glow white-hot and sear them together with pieces of themselves.

The seal takes form of a handprint on Dean's shoulder, where Castiel had healed him before, and on his throat and neck where Gabriel's hand is. It isn't the most discrete place but Gabriel likes his marks of ownership to show.

Dean's sobbing when he comes back to himself, able to push past the darkness and the whiteness of the Angels, and his body is burning. He feels raw and opened, like on the rack, like his chest cavity is opened wide and exposed. He still can't touch anything – he's being held back and he's not aware of any other sensation than the hands on him. His knees hurt where he's fallen to them but that's all.

"Cas," he gasps out, whines when he feels the Angel's answering rumble. "Gabriel."

"We're right here, kiddo," Gabriel answers softly, and there's a gentle hand carding through Dean's hair and he whimpers again, leaning into the touch. The darkness shifts inside of him, responding to the power of the Angel's Grace and surges forward, makes Dean's eyes go black underneath his closed lids and he gasps, his body tensing up. "Shh, Dean, it's alright. Relax. We need this to happen."

"You are safe, Dean – we won't let this thing hurt you anymore."

Unable and unwilling to resist the Angels, Dean lets himself relax and stops fighting. The darkness surges up again but doesn't push him to one side. It can't because Dean's fixed to it as well. He can still feel and control his actions and what he's doing. His eyes fly open at the revelation. One of them is black, the other green.

"Gabriel," he purrs, the presence's voice in his own but the relief is all Dean. When Dean's hands move and Castiel lets him go, the movements are all Dean. The Hunter rubs at his neck, wincing at the soreness and biting his lower lip. "What did you do?"

"We sealed you both together," Castiel whispers, and Dean turns to look at him out of the corner of his black eye. "Its power, but your will."

"Or ours," Gabriel finishes.

Dean frowns. "Yours?"

The Archangel nods, brushing his hand along the print and Dean shivers at the electric touch, wanting to shy away from it and press into it at the same time. It's the darkness pressing into the touch but the Hunter leans back against his Angel.

"So, what, you made me your slave or something?" he asks, fear and anger ringing in his voice and the darkness agrees – it snarls behind Dean's face. The lights flicker overhead in response to Dean's aggression.

"This was the only way, Dean, calm down!" Castiel whispers, holding his Hunter again and whispering the words into Dean's ear and the Hunter shudders, lids closing over his weird, mismatched eyes. He clenches his jaw and tries to force himself to relax, unable to disobey. Fear flickers in his eyes again when he opens them, realizing what he just did.

"You will be safe with us," Gabriel says, stepping forward to close the gap between them. Dean notices that the dark side of him gravitates towards the Archangel, while the Hunter, the human side of him, stays close to Castiel. "We won't abuse our power."

"You are in full control."

"Except where you guys are," Dean snaps, but there's no heat. The relief is too strong. He closes his eyes, pressing against the dark side of him, forcing it back and turning so he's dominant inside himself, and both eyes go green.

You've helped me. You've stopped me. Thank you.

Castiel smiles a little and presses his cheek to the back of Dean's neck. The Hunter relaxes a little, more so when Gabriel places a hand on him too. This is more permanent – this isn't a choice anymore, and Dean doesn't feel unsafe anymore. He knows he won't slip up because he can't. They won't allow it. He's powerless and that makes him safe again.

Thank you.

"Always, Dean," Castiel whispers, and Dean sighs out a breath and says nothing.