It's beautiful, mesmerizingly so, and Dean finds himself shivering with more than the sudden cold. "Wow," he says, ineloquent and humbled and distracted from the thoughts that had come before, the hopes that his wouldn't turn out to be a monkey.

The partnership makes sense, though. Castiel is nothing like him, and yet they work, complementing each other. It's a comfort to realize the zanpakutou will do the same - and probably won't turn out to be a monkey. "It's like snow."