Dean sat on his bed, his back resting against the headboard. He heard Sam groan from his room next door and began to move to check on him, but stopped when his eyes fell on the empty chair that he'd angrily pushed against the wall weeks ago.
"Where the hell are you, Cas?" Dean muttered as he settled back onto his bed. There wasn't anything he could do for Sam anyway. God only knew what not finishing the third trial was doing to him.
He was staring at the chair now, he couldn't help it.
Dean had woken up to that chair moved to sit right next to his bed and the sound of fluttering wings so many times that he'd lost count, but not once in the past few weeks.
"I realize you probably can't hear this Cas, but if by some miracle you can… I'm so sorry. I need you here now. I can't… I can't do this on my own." He sighed and decided to lay down and try to get some sleep. He fell asleep with his eyes still on the chair, hoping that he would wake to find Castiel watching over him.