Dean blanches slightly. Stuck in any given space with another person, Dean expects to be the unpleasant one - it's weird to hear Kisuke claim that title, and it has Dean shuffling his feet.

"Not unpleasant," he murmurs, "Just not easy." But Kisuke is touching his shoulder, Castiel's mark long healed but livid beneath his sleeve, and Dean regains his focus. "Remnant of angelic grace," he says. One from a fitting donor, given Dean's new determination to empower himself. "Will that work?"