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It starts in silence.
The kind that lives in cathedrals.
The kind that fills the lungs right before a kill.
Stiles doesn’t speak when he pushes Derek to his knees - not roughly, not cruelly - just with a hand in his hair and that look in his eyes:
You’re mine. You trust me. Kneel.
And Derek does.
Because whatever Stiles has become - whatever war born, empire wrought creature lives behind his eyes - Derek wants it.
Wants him.
Peter’s already waiting, shirt undone, eyes fever bright as he watches Derek fall into place like a knight at altar.
"Good boy," Peter breathes, when Derek's mouth seals over his cock.
Derek groans around him, a sound that vibrates in Peter's spine. His lashes flutter, lips wet, tongue eager and obedient as he lets Peter guide him deeper.
But it's Stiles who commands the room.
He stands behind Derek, one hand curled at the nape of his neck, the other stroking down his spine - grounding him. Not gentle. Not cruel. Just… there. A tether. A claim.
And when he sinks into Derek - slow, thick, devastating - Derek whimpers around Peter's cock, trembling like he's coming undone at the seams.
Peter laughs - low, reverent, breathless.
"My darling boy," he murmurs, brushing sweaty hair from Derek’s temple. “Taking us so well.”
Stiles doesn’t smile.
He just fucks him deeper.
Controlled. Measured. Like every thrust is a prayer and Derek is the altar.
Peter watches them both like he’s witnessing the second coming of Jesus.
Like nothing in the world has ever made more sense than this.
Stiles owning them.
Derek on his knees.
Peter moaning his name.
“Look at him,” Stiles rasps, voice low and ruined. His hand fisting in Derek’s hair, tugging him off Peter’s cock. “Tell me what you see.”
Peter grips Derek’s jaw. Forces his head back until their eyes meet.
"I see loyalty," Peter whispers. His voice is full of awe. “I see devotion.”
Stiles leans in close. Still buried deep in Derek, still owning him, body and soul.
“I see mine,” he growls.
And Peter…Peter shudders.
Because he’s never wanted anything more than to belong to that same madness.
Derek is wrecked.
Shaking, sweat soaked, his spine curved like a supplicant as Stiles stills inside him. He breathes in low, ragged pulls, mouth open, knees bruised against the hardwood. Peter's hand stays curled at the back of his neck, thumb stroking idly. Derek doesn’t flinch from it.
He doesn’t flinch from anything anymore.
Stiles stays wrapped around him like sin - one palm splayed on Derek’s hip, the other pressed flat between his shoulder blades, grounding him into the floor.
Peter watches the rise and fall of both their bodies.
He’s still hard, the head of his cock slick and flushed where Derek's mouth left him, but he doesn’t move to finish. Doesn’t need to. Not yet.
He’s too focused on the sight of them: his blood, his pack, tied together in every way that matters. Derek trembling, breath hitching. Stiles still inside him, eyes dark and unreadable.
"He's perfect," Peter says, voice low.
"He is," Stiles replies, quieter still.
He pulls back just enough to draw a broken sound from Derek's throat - then pushes back in, slow and steady, a single stroke that has Derek gasping, thighs shaking with effort to stay upright.
"You're doing so well," Stiles murmurs, and it's not praise.
It’s truth. It’s commandment.
It’s scripture whispered into Derek’s spine.
Peter leans forward, kneels beside them both, and kisses Stiles.
It’s not greedy or punishing.
It’s slow. Starving.
Stiles groans into his mouth, one hand releasing Derek just long enough to grip Peter’s throat, thumb pressing into the corner of his jaw, not tight, not loose. Peter moans, lips parting for him like he always does, like he was made to be held this way, with control, with reverence, with want.
When Stiles breaks the kiss, he doesn’t move far.
He presses his forehead to Peter’s and whispers, “He let me ruin him.”
Peter’s breath stutters.
“He begged for it.”
A shiver rolls through Derek, as if his body responds even before his mind can catch up. His cock is hard again, slick and flushed, and Peter doesn’t hesitate. He wraps a hand around it, slow and steady, watching Derek jerk at the touch.
“You’ll take it again,” Peter whispers to him. “For us.”
Derek moans. Wordless. Wrecked.
But he nods.
Because of course he does.
Because there’s no one else. No other pack. No safer place to fall apart than here, between the hands of a monster and a king.
And then Stiles begins to move again.
Stiles is still inside Derek when he lifts his head and turns to Peter.
His voice is low, steady, dripping with authority.
“Keep touching him.”
Peter’s breath catches.
Stiles’ hand tightens on Derek’s hip as he draws back and snaps forward - still not fast, but deep, deliberate. Derek moans, high in his throat, eyes fluttering shut as his body ripples with the aftershocks.
“Stroke him,” Stiles orders, voice rough. “Make him feel how good he is for me.”
Peter tightens his hold on Derek instantly.
Derek chokes on a breath.
“Good boy,” Peter whispers, voice dark silk. “So eager to be used. So perfect like this.”
Derek doesn’t speak. Doesn’t have to.
His entire body responds, head bowed, lips parted, moans catching with every stroke of Peter’s hand and every thrust from Stiles behind him. Stiles moves harder now, dragging each motion out like he’s memorizing Derek from the inside.
Peter leans close. Presses a kiss to Derek’s shoulder. Then another just below his ear. He keeps pumping his cock in slow, slick strokes, watching the way Derek quivers.
And then he looks up at Stiles.
“Can I come on him?”
Stiles stills.
The weight of his gaze is scorching. His grip on Derek tightens.
“Yes,” he says, low and final. “Do it.”
Peter groans - and for a second, his composure fractures. He strokes himself with quick, needy motions now, rising up onto his knees beside them, hovering over Derek’s back.
Stiles pushes in deep and stays there.
Derek whimpers at the pressure. so full, so overwhelmed, so willing…and Peter breaks.
He comes with a strangled sound, spilling across Derek’s back in hot, viscous stripes. It paints the muscle of Derek’s spine, his shoulders, some of it catching in Stiles’ fingers where they grip too tight.
Derek moans. Loud. Shattered. And then he's coming too.
“Thank you,” Peter pants, breath catching.
Stiles leans over Derek, pushing in once more, claiming the last of him.
He kisses Peter, tongue slow and possessive, tasting his breath, his pleasure, his surrender.
“Good boy,” Stiles murmurs - to both of them.
Derek shudders.
Peter’s eyes flutter closed.
And Stiles holds them both.