A/N: And here you go! The final chapter. Enjoy~3
"Cas? CAS!" Dean shook the angel in his arms, trying to wake him.
He could see Cas' eyes rolling behind his eyelids, they darted and spinned sickeningly and only made Dean more frantic.
"Dammit c'mon. I just got you back! Don't you dare leave me again!"
A broken sound escaped from the angel's lips and his body began to writhe in Dean's arms. He seemed to be fighting something and it looked like he was losing.
"C'mon, Cas buddy I can't save you from this one. C'mon!"
Cas' hand twitched towards Dean, as if trying to grab him. Dean nodded even though Cas couldn't see him, "That's it! C'mon!"
Cas' eyes shot open and he gasped. He sat straight up and began to claw at himself everywhere.
"Get them off! GET THEM OFF!" He screamed, ripping at his clothes and skin.
"Cas! Get a hold of yourself." Dean said grabbing the angel by the shoulders and centering him. Cas' eyes snapped to his face, they blue depths seemed to roil and move with chaos.
"D…Dean…"
"Yeah, Cas. It's me. I remember you."
Cas' lips curled up into a small smile but his eyes still were in chaos. Dean watched him warily.
"You remember me." Cas almost laughed. Dean's eyes narrowed and he held the angel tighter, preparing for a violent response. But instead Cas began to fall over in Dean's arms his body collapsing. Dean caught him and pulled him closer.
"Hey, buddy, what's going on? What's wrong with you?"
Cas only laughed breathlessly, looking up at Dean. He was smiling but not in a comforting way. It was the smile of a man who was hanging onto the edge by his fingertips.
"They're inside me. They're taking me over."
"Who? Who's taking over?"
Cas only laughed, his head lolling back and his eyes closing.
"Hey. Don't you dare. Open your eyes." Dean shook him and successfully opened Cas' eyes. They looked dead now, a look that terrified Dean.
"I…" Cas began, his voice hoarse.
"Stop. No talking." Dean said bruskly, scooping Cas up and carrying him to the bedroom where he placed him on the bed.
"I'm sorry, Dean. I tried to get rid of them."
"Get rid of what?"
"The demons…in your head."
"What demons?"
Cas smiled at that, "Exactly." He closed his eyes and his body settled into the pillows.
"No, no sleeping. Not right now."
"Just let me rest, please. That's all I need." Cas pleaded, his eyes staying closed as he quickly fell into unconsciousness.
"Cas…I don't know…" But the angel was already asleep. Angels weren't supposed to be able to sleep, Dean knew that much. But he seemed like he was only sleeping.
After a few minutes of watching Cas' every move Dean began to relax and reality began to sink in. He had Cas back. While he didn't know what happened really, he knew he and Cas had been separated for a long time.
He settled in next to the angel, not planning to move until he woke up.
The room was dark as Cas' eyes opened slowly. He felt strange, like he could barely move and like he could sleep more even though he was sure he had just slept a very long time.
"Hey." A soft voice said from Cas' side.
"Dean?"
"Yeah." Dean grinned which lit up the tired lines on his face.
"Dean." Cas was overwhelmed with relief and he turned to Dean, grabbing him and pulling him close.
Dean chuckled at this and kissed the angel's forehead.
"You gave me quite a scare."
"I'm sorry." The sorry was so full of regret and sadness that Dean pulled Cas back to look at him.
"It's alright, Cas. I know. And it's fine."
"But, Dean, what I did to you I could never forg—"
"Cas, stop. I don't care. You're here and I'm here. End of story."
Cas thought momentarily about denying it but decided it wasn't worth it. Because Dean was right. Regardless of what happened he had Dean and Dean had him. And, at the end of the day, was there really anything else that mattered?
With that thought Castiel relaxed and Dean wrapped his arms around him. With those strong, warm arms around him again Cas felt truly whole. Like he once again had a place where he belonged.
And he would never leave Dean again. Because Dean was a part of him and he was a part of Dean and they could not live one without the other.
So Cas settled into his hunter's arms with the intention of never moving again.
A/N: Yay! A happy ending. And with all the Season 8 episodes I'm so full of Destiel feels right now. So this let me release some of those emotions~