Leaning in close Dean pressed his fingertips into the ragged flesh of Cas' back, earning a pathetic whimper from the now-trembling Angel. Running his hand down Castiel's spine, Dean released a hiss of suppressed arousal and moved to Cas' front, ducking under the feathered wings. He noted with satisfaction that the Angel was shaking so hard it looked as though the feathers were moving in the wind.
The fire in Dean's eyes burned as he crossed to his table of tools and selected one of his brand new toys.
"Know what this is, Cas?"
"I'm hoping I'm wrong."
"You're not. It's a spiked chain made from the melted down Angel blades of the Angels you slaughtered."
Cas restrained himself, a light widening of the eyes his only reaction.
"You can't have melted them, it's impossible."
"You taught me to use holy fire, Cas."
The Hunter wound the thick chain into a coil, stretching the middle length between his bloody hands and holding it across Cas' neck. He moved the chain closer to the Angels adam's apple until one of the spikes grazed his skin, earning a groan from deep within Castiel. As Dean pressed further Cas hissed, his blood dripping down onto his lightly muscled torso.
When the spikes were fully buried in the Angel's neck Dean wound the chain into a cruel halter neck and continued rapping it around Cas' arms, tearing holes in the once smooth flesh.
Glancing up to look at Castiel's face Dean was greeted with a sight to behold – the Angel's head was bowed and tears were dropping onto his thighs.
"Awww, is Cas hurt?" Dean received no reply, so he asked again, tilting Cas' head towards him, leaving a bloody streak on the Angel's stubble.
"Answer me. Does. This. Hurt?" Each word was punctuated with a tug on the chains, and Dean was rewarded with an anguished moan which escaped through the Angel's plump pink lips, bruised from how hard he'd been biting them to keep quiet.
A low chuckle escaped Dean.
"I guess it must."
Clinking the cool chains as he moved, Dean kneeled between Castiel's thighs, tracing patterns on the Angel's legs with the spikes on the remaining chains. Castiel caught his eyes in a burning glare, but beneath the fire was a desperation which filled Dean with a sense of accomplishment.
"Please, Dean. Stop."
"Why should I?"
"This isn't you. You wouldn't do this to me."
"You're wrong. This is my job. I hunt monsters. Do you know how many people you killed, Cas?"
"Yes. But I atoned for that Dean. You know I did."
"Well, I can't speak for you, but your vessel seems to be on my side."
"I have no control over my vessel, Dean."
"I do."
Slowly, gently, Dean traced his bloody fingertips up the insides of Castiel's thighs, relishing the streaks of red he left behind. Eventually he reached the sensitive skin surrounding Castiel's groin, where the evidence of arousal was plain to see. It seemed Jimmy Novak was a kinky fucker.
"You ready to fall in the only way left, Angel?"
"No."
"I'm sure you'll change your mind."
Deliberately Dean pressed his lips against Castiel's bare navel, enjoying the involuntary shiver Cas gave.
"Pleasure or disgust?"
"Both."
"At least you're honest."
The kisses continued down, down until they reached the dark curls at Castiel's groin. Looking up at the Angel through long eyelashes, Dean smirked before yanking on the chains, tearing a scream from the battered Angel. Before Castiel was even done, Dean leant down and pressed his lips to the head of Castiel's dripping erection, the salty taste of pre-cum spreading on his lips.
"Well, sort of honest." Dean teased. "You can't lie to me about this, you dirty little Angel."
Dean ran his tongue from shaft to tip, sucking gently on the head, earning a quiet, almost unintelligible moan from the Angel. Urged on by the reaction Dean swallowed Cas's length, sucking gently, then harder, fingers gripping the Angel's quaking thighs. He continued to tease pre-cum from Castiel, enjoying the salty taste on his tongue, judging how close Cas was from the groans, growing in frequency and volume, which the Angel couldn't hold back.
"D-dean, pl-please..."
"Please what, Cas?" The vibration of Dean's mouth on Cas' cock earned him another groan, the Angels head lolling back, eyes closed.
"Please, carry on."
Abruptly, Dean stood, backing away from the Angel he'd assaulted in every way he knew.
"But then what would be the fun?"
Walking slowly around the thoroughly fallen being before him, Dean pressed his hands to the Angel's shoulders. Slowly, he stroked the black wings, sopping with Castiel's blood, even now. His hands came away dripping with the thick, dark liquid.
Walking towards the door, he pulled down a curtain, revealing a symbol designed to dispel Angels from the vicinity.
"Dean, if you do this, I will find you and I will repay the favour."
A smirk flashed across Dean's face.
"I'll be waiting."
He pressed his dripping palm to the symbol and watched as the Angel left the room in a flash of blinding light. The ball was firmly in Castiel's court now.