Will Blood Fulfil This Thirst In Me?

Summary: When Dean and Sam encounter a vampire, worst comes to worst when Castiel is bitten. The transformation is slow and painful for the falling angel, but will he give in to temptation when Dean offers him the inevitable. Dean/Castiel; boy-kissing; sexual situations; swearing.

A/N: The title comes from the song 'The Thirst' from the musical Lestat.

-x-

Day 1

Dean Winchester cocked his pistol as he and his brother, Sam, walked down a deserted alleyway, guns and axes at hand. Another hunt for vampires had drawn the brothers into the darkness of the alley behind the town mall. They had previously been attacked outside the bar next to their motel, leaving Sam's face covered in scratches, with a black eye and Dean bleeding from a gash on his forehead, and his clothing looking like he had had a fight with a shredder.

"Where's Castiel when you need him?" Dean said, mentally cursing the angel. Dean had a quick scan of the alley before they walked any further. "Come get us, bitch!" he yelled. "You ruined my favourite shirt." He clutched the axe in his hand harder, almost in a white knuckled grip.

"Dean, don't. You'll aggravate the thing further," Sam warned. Dean just scoffed and yanked off the remainder of his flannel shirt. Both hunters stopped to read themselves with enough weapons when they heard a rustle up ahead. Quick as a flash, guns were cocked and axes held at the ready. An attractive blonde woman walked out of the darkness and towards the brothers, stopping at least ten feet from the Winchester's. She breathed in deeply and her eyes widened before they rested on Dean. Her lips curled into a smile.

"You smell delicious. Fresh meat, straight from Hell," she said, her tongue skimming over her bottom lip seductively. Dean just smiled as she slowly walked closer.

"You said it, baby," Dean said, readying the axe in his hand before charging forward. She bared her fangs and, as Dean swung the axe, she reached out and grabbed it with her bare hands, her terrifying strength yanking it out of his hands and throwing it across the alley. She grabbed Dean by the throat and knocked Sam out of the way as he came to defend his brother. Dean's feet lifted from the ground as she raised him up, slowly choking the life out of him with her strong fingers on his throat. Sam kicked his legs out, knocking the vampire's legs out from underneath her, sending her to the ground with a thud. She let go of Dean, who coughed and spluttered, trying to get his breath back before reaching for his axe. But the vampire was on him, pinning him to the ground, laying one swift punch to his gut before laying another one on his face. Sam appeared and grabbed the vampire around the neck, pulling her off his brother.

Suddenly, Castiel appeared next to Dean and reached for the axe on the ground. Sam had hold of her, but she threw her head back, breaking Sam's nose with the force of the impact. He fell back, his nose bleeding and painful. Castiel moved forward, axe held his before he brought it down. It narrowly missed her head, its metal clang on the concrete deafening. She kicked out at Castiel, knocking him over, the axe sliding away out of reach. He scrambled to get up but the vampire was on him in a second, holding him down, her fangs perilously close to his jugular. He managed to hold her back.

Just.

"Cas, I'm coming," Dean said, getting to his feet, but two other vampires appeared, grabbing him and pulling him back, before pulling Sam up and holding him also.

"No need to harm them," the blonde vampire said, moving to straddle Castiel's lap, her strong hands holding Castiel's arms down by his sides. "One will satisfy me." Castiel struggled against her as she leaned down and ran her tongue from the base of his throat, over the pulsing vein in his neck and up his cheek. Castiel frowned, trying to get his face away from her. She grabbed his chin, making her look at him. She leaned down to press a kiss to his lips, Castiel gasping as her fangs caught on his bottom lip, piercing the skin, a little trickle of blood appearing there. She licked it off before moving her head down to his neck.

"No! Cas!" Dean shouted, struggling against the strength of the vampire holding him. "You can't do this to him. He's an angel." The vampire clan just laughed. One more vampire appeared. He knelt next to Castiel's head, one hand gripping the angel's hair and the other his chin, pulling his head up and revealing the pulsing vein in his neck. The blonde vampire's licked her lips as she looked at it. She lowered her mouth to his neck, running her tongue over the vein first before she dug her fangs in. Castiel cried out at the pain as they travelled in deeper.

"Cas!" Dean yelled. Castiel's eyes met Dean's, but they were glazed over as the woman continued to drink from him. His face became pale and his body trembled as she began to paralyze him. Dean could only watch. The vampire finally let go of Castiel, his head hitting the concrete with a dull thud, which made Dean wince. The vampire looked over at Dean and Sam, who had stilled their struggling as they watched their friend, helplessly. She grinned menacingly, before raising her wrist to her mouth, piercing her skin with her fangs. She watched as it dripped down her flawless skin and down into Castiel's mouth. Dean watched as Castiel just blinked and swallowed down the blood, his body still. He couldn't believe he'd let his friend, his angel, come to harm.

"Good evening, gentlemen," the woman said, before Dean and Sam were knocked unconscious, leaving the vampires to escape.

-x-

Dean awoke first, his eyes adjusting to the street lamp nearby. It had started to rain, so Dean felt cold. He shivered violently and pushed himself up from the ground, limping slightly from the pins and needles in his leg. He took a glance around the alley. Sam was still out cold. He went to wake him, shaking his brother, who groaned and came to, slowly. Then he looked over and saw the still form of his angel. He was lying, soaking wet, on the concrete, eyes closed, skin pale, but his body was trembling. Whether it was from the cold or the transformation, he couldn't tell. He winced a little when he saw the deep bite mark on Castiel's neck. His legs hurt badly so he knelt next to Castiel, shaking him lightly.

"Cas? Castiel, wake up!" Dean said. He was still. Not a muscle was moving.

"Dammit, Cas! Wake up," Dean demanded, unshed tears coming to his eyes. Castiel's eyes suddenly shot open, and a bloodcurdling scream came from within the depths of the angel. Dean jumped back, putting his hands over his ears as the angel managed to blow the streetlamps out with his screaming. He looked over at Sam, who was curled in a ball with his hands over his ears. Castiel's screaming blew out the lights in nearby apartments and motel rooms, even some car headlamps. Then it came to an abrupt stop. Dean took his hands from his ears, wondering if he had gone deaf and he looked down at Cas, who was looking at him with the bluest of blue eyes.

"Cas?"

"Dean." Dean sighed with relief and he managed to help the soaked angel off the ground. He took off his own coat and put it around the angel's shoulders, trying to warm him. His skin was freezing, and he was shaking. Dean put his arm around him.

"I won't be able to stop the transformation," Castiel suddenly said. Dean looked up at him. "I have some of my angelic powers left, which can slow the process down. But I cannot stop it from completing. In a few days I will be a full vampire, and my grace will be gone for good." Dean couldn't keep Castiel's gaze anymore. He was ashamed he couldn't have helped him stop it.

"I'm sorry, Cas. I tried to help," he said, a tear rolling down his cheek. Castiel cupped Dean's cheek, wiping the tear away with his thumb.

"Nothing is your fault," he said with a sad smile. His eyes, Dean noticed, were a much brighter shade of blue, and the dark circles under his eyes made them stand out more against his paling skin. Dean felt they were looking into his very soul.

"You're coming back to the motel with me. I'm not letting you out of my sight," Dean said, as Sam came and stood with them. Castiel looked grateful to Dean, but he knew there was nothing Dean could do.

"Let's go," Sam said to Dean, making his way to the Impala, both Dean and Castiel following. Dean sighed to himself, wondering how the hell he would cure the angel he secretly loved so much.


Hope this was an alright start, not sure exactly where I'm going with this yet, so bear with me, lovelies. If you are reading this, then you obviously think it's alright, so feedback is awesome! :)