Destiel Oneshots

Part 9 - ?

A/N: Warning: smut, Placed in season 10

The Mark of Cain burned on Dean's forearm, leaving an itch that Dean had yet to feel. He sat in his chains in the Bunker's dungeon. He didn't know how long it was since he'd seen Sam or Cas, maybe five hours, six? The time blended together when there was nothing to do.

The monotony broke when Cas alone entered the dungeon, sliding the shelves to one side as he brought in a tray of syringes. Dean could feel Cas' pitiful gaze on him and the worry heavily laced into the look, but Dean hardly cared. He hadn't cared for a long time now.

Dean watched from hooded eyes as Cas filled a syringe with human blood and turned back to him.

Dean rolled his eyes. "So, Castiel," he taunted. "What does Heaven's little reject want with me today? Sam not feel up to our fun chats anymore?"

"He's out," Cas replied shortly.

"Ah, I see." So Dean had Cas all to himself for now. As Cas approached him, he asked "You're not seriously thinking about doing that, right?"

"Sam thinks it will help."

"Oh, Sam thinks it will help," Dean replied. "I'm sure he's working his ass off to find a way to make me human again, isn't he?"

Without another word, Cas stuck him with the syringe, the needle finding its way perfectly to Dean's major artery. 

It felt like poison in his veins, like his nervous system was burning up. Dean threw back his head in pain. 

Cas sighed, his shoulders slumping, and went back to the tray, cleaning off the syringe and replacing it.

The pain passed and in that moment he made a plan. He knew he was strong enough to break the cuffs but human enough to leave the Devil's trap.

Before Cas could turn back around, Dean pulled him to the ground, thrashing at any exposed skin he could get in contact with. Cas fought back, matching his strength.

Before long, Cas had Dean pinned up against the cement wall, mere inches between their faces. 

"What happened to you?" Emotion Dean had never seen before seeped into his voice and tears welled in his eyes. It filled Dean with contempt. 

"I became who I was meant to be."

"This is not who you are meant to be," Cas replied, not breaking eye contact. "You are kind and generous to those who need your help. You fight a war for people who don't even know there's danger, even if you can't see yourself making it out alive. You are braver than anyone I've ever met before, angel or human, and I love you."

Cas pressed his lips into Dean's for the shortest of moments before pulling away. He watched as Dean's eyes slid from black to that familiar shade of emerald green.

"Cas," tears welled in Dean's own eyes. He looked at the other man's face, at the cuts and bruises left there. "Cas, did I do this to you? I'm so sorry."

"It's okay, Dean. You weren't yourself."

Dean shook his head, sniffing loudly. "No, it's not okay."

Cas lifted Dean's chin with a finger, forcing Dean to look him in the eye. "It's not your fault Dean."

This time, Dean leaned in first, hungry for the other man's lips. Cas kissed back hard, salt tears saturating his normally chapped pink lips. They found their rhythm and sped up, Dean nibbling on Cas' lip and Cas giving him access.

Dean slid his tongue in Castiel's mouth, exploring it. Dean's hand slid from the back of Cas' head to the small of his back then to his ass, pulling him even closer, their growing erections rubbing together.

Pulling back, Dean looked deep into the angel's eyes. "Are you sure you want to continue this?"

Cas nodded and crashed his mouth back onto Dean's. Dean began slowly stripping away Cas' garments, first his trench coat, then his blazer, tie, dress shirt, then (fucking finally) undershirt. He couldn't get over how defined Cas actually was under all those layers.

Then pulling off his flannel and black tee, Dean flipped Cas around on the wall and slid o his knees, looking up at Cas through his eyelashes. Cas gave another small nod of consent.

Dean unbuttoned Cas' trousers and they fell around his ankles, the belt buckle hitting the floor with a loud clunk. Dean pulled Cas' boxers down slowly, ghosting over the muscles on the backs of his legs.

Cas' cock stood out at him, red an throbbing and larger than Dean expected. With the smallest of smiles, Dean kissed the very tip, then put the whole head in his mouth, sucking on it lightly. Already, Cas was starting to moan.

Swirling the head with the tip of his tongue, Dean slowly began to take Cas in his mouth, inch by inch. Cas leaned his head back an let out a small moan, alerting Dean to his own situation, but he disregarded it for now.

Dean lowered his lips to the very base of Cas' cock then back up again. He began to build speed, leaving Cas a moaning mess. Before Cas could come, however, Dean stopped abruptly, throwing a knowing look back up to Cas.

Castiel made a noise of complaint but Dean stood back up nevertheless. He leaned close to Cas' ear and whispered hotly "This may hurt a bit, I don't have any lube."

"I'm an Angel of the Lord, Dean," His voice was even lower and rougher than usual. "I'd suggest you'd have a little faith."

Dean pushed Cas to the ground on all fours and sucked on one of his fingers that he slid into Cas' tight hole. Cas' neck went limp when he started moving in him, then moaned when Dean added another finger, scissoring him from the inside.

A small cry of protest was released when Dean slid his slick fingers out, but he ignored it as he took off his own shoes and jeans, releasing his pent up cock from the restraints of his own boxers.

Dean put his hands on Cas' defines hips and slowly began to enter Cas. The man squirmed but didn't make a sound when Dean slid father and farther into him. Dean let out a moan when the base of his cock met Cas' ass.

He slid out and back in, slowly gaining speed. At first, Cas was in pain until Dean hit his prostate and he let out a loud moan, making Dean move even faster. Cas reached under himself and grabbed his own throbbing cock, matching Dean's motions with his hand.

"Dean," Cas moaned as Dean slammed into him harder and more vigorous than ever. Dean began to pull Cas' hips closer to him with every thrust. "Dean, I'm going to-"

"Me too," Dean replied, panting hard.

Cas came just a moment before Dean, yelling the other man's name with a cry.

Let's just say Cas now knew how to pull Dean out of his Demonic trance.