"Cas! C'mon man you gotta help me!" Dean yells to the ceiling while being chased through an abandoned warehouse by several powerful demons. Should have called Sammy, he thinks. The righteous man finds an unlocked room, quickly enters, and barricades the door behind him with a few chairs. He grimaces in pain at his ankle, which he's pretty sure is broken in more than one place (from being thrown down a flight of stairs).Should have brought a god damned useful weapon, he thinks as he throws down his completely useless handgun. Desperate, he tries praying to Castiel again. "Cas! Get your feathery ass down here before something bad happens!"

Suddenly, the angel is standing right next to the Winchester. "Hello, Dean."

"What the hell took you so long?" Dean attempts to sit down but his ankle won't allow it and he falls. Castiel shoots him a look but the mortal man waves it off. "There are about six angry demons out there and they're getting ready to bust in here at any moment."

"I'm on it," Castiel positions himself in front of Dean protectively and waits for the door to burst open. In a moment, the chairs go flying and all the demons pile into the room threateningly. Cas is able to smite three of them before being shoved into a corner long enough for Dean to be kicked in the stomach and thrown out of the room. The angry warrior proceeds to kill the rest of the demons after that.

Castiel quickly glides out to where Dean is lying on the hard floor, clutching his ribs and stomach. His green eyes are shut tightly.

"Dean? Dean, are you okay?" Cas sinks to his knees next to the aforementioned man and runs frantic, worried hands over his face.

"I think…they…broke my…ribs."

"I'm unable to heal you, I used most of my power to get rid of the demons," Cas says regrettably.

"Just…take me…back to…the motel. And…don't…call Sam," his words come out in short labored breaths.

"Can I carry you? I don't believe you are in any condition to walk," the angel asks, but gets no response as Dean had passed out.

Castiel gently scoops Dean into his arms and carries him out of the warehouse. He noticed that the Impala was not present, so the Winchester must have walked. He knows that Dean won't like it, but he must get him back to the hotel quickly, so the angel uses up the bits of his power that he can collect, and teleports himself and the other man to the motel room.

The angel watches Dean for eight hours before he wakes up, not leaving his bedside once. When he first arrived, Cas had no idea what to do. Eventually he decided to strip the man of his outer layers of clothing and put him in bed under a few blankets.

When Dean does wake, the first thing he mumbles in wheezing breath is, "Cas…that you?"

"Yes, Dean, it's me."

"Am I…dead yet?"

"No, you are very much alive."

"I have a…bitch of…a headache."

"What else do you feel?"

"Pain. God…my lungs…burn."

"That is normal in your condition. What can I do to help?"

"Just…stay," Dean wheezes before closing his eyes again.

Castiel stays.

Dean wakes up the next evening and turns his head towards his angel.

"Cas? Can you…come here?"

Castiel stands up and gets closer to Dean.

"Closer," he mumbles tiredly. He reaches out an arm and pulls Cas' coat until he's about two inches away from his face.

"Dean…"

"Come…lay…with me."

"Dean, I…"

"Please."

So that's how Castiel came to be lying in a bed with his arms wrapped cautiously around Dean. The mortal man had needed some assistance, but his head was on the angel's chest, sound asleep. Castiel tilted his head down and kissed Dean's bruised forehead.

The next day, Dean wakes up for a brief moment, buries his head further into Cas' chest and slurs out a "Thank…you…for…coming when…I called."

"I'll always come when you call," Castiel responds.