Castiel perked up at the call of his name in his head, said by a familiar voice. Dean sounded... frustrated. Troubled. Even so, hearing Dean's prayer was something of a relief to Cas. This felt... normal. Like things could be what they had been before everything that had gone wrong between them in the past few years.
That was a nice thought - the kind of thought that Castiel clung to at times when everything was weighing on him. Not that he wanted everything to be like it was - he could definitely do without the apocalypses and the violence. But the thought of Dean and him on friendly terms, without those things? That was something to strive for.
He flew straight to Dean's house, figuring that he would most likely find his friend there. Sure enough, Dean was in the kitchen leaning over the sink. Castiel landed behind him, waiting politely for Dean to turn around before speaking. "Dean." His head cocked to one side as he studied the hunter. "Is something wrong?"