As Dean drove, he started to shiver, he tried to focus and keep his eyes on the road but could not help but to look back to check on Cas every now and then.
He muttered to himself almost like he was praying "Come on Cas you gotta be alright".
He could feel tears on the brim of falling down but wiped them away before speeding up to get back faster.
When he pulled up at the batcave , he opened the backdoor and gently lifted Cas up again, still very cold, Dean thought.
Dean held Cas close and ran toward to door, he banged hard and shouted for Sam, within a minute a sleepy Sam opened the door and Dean immediately pushed Sam away to lay Cas down.
Sam's eyes widened and he snapped out of his sleepy state instantly.
Dean went to one of the empty rooms they had and laid Cas down. He shouted for Sam to boil some water and Sam did so without asking questions.
An angry dean was not to be trifled with.
Dean held Cas's hand and started to rub it to generate warmth. He also took out blankets and towels to wrap Cas up in them.
Dean was worried that Cas was still cold. He couldn't lose Cas, not again.
He started to fear that Cas's grace had a problem that affected his healing. Little did he know that Cas wasn't an angel anymore.
Sam came in running with a warm water bag in his hand, he passed it to Dean who placed it on Cas's stomach.
Dean went to get more warm water and a small towel. He then used the towel to warm the rest of Cas's body up.
Sam watched silently at the side. He never saw Dean so gentle and concerned in helping someone else before, and in that moment, he knew how important Cas was to his brother.
When Dean finally felt Cas was getting better, he pulled Sam out to the living room for to talk.
"Dean what the heck, where did you go? You left for about an hour and returned with an injured Cas" Sam questioned.
"You're asking me? I was driving past the woods when I found that lucky son of a bitch half dead".
" But why didn't he just poof himself better or you know back here?" Sam wondered.
"Beats me", Dean exclaimed. "Could it be that he has some problem healing or some shit?"
"I guess we will have to wait to find out by asking him" Sam said frowning hard.
Dean could tell Sam was really tired and no doubt Sam would be as it was only 4pm and Sam be should resting, so even though Dean was exhausted he decided to tell Sam to go back to sleep while he watched over Cas.
"Go back to sleep Sammy, I'll look over Cas for now" Dean said trying to sound like he is forced to do it, not wanting to seem concerned for Cas.
"You sure? You look tired" Sam asked concerned.
"Yeah well I'll survive" Dean replied, now with a smirk on his face.
Sam nodded and said "Just yell if you need anything' before returning to his room.
Dean went back into the room Cas was in and smiled a little as he finally felt safe.
His angel was back here he thought.
But then a thought struck him, what if Cas was the one who caused the chaos of the angels falling, how was he going to forgive Cas? No. What matters now is that Cas gets better he thought, though that idea scared him a little, he decided to push away the thoughts for now and place his attention on the injured Cas.