He can't help it. The offer is so genuine, so sincere, and so comical that a huff of a laugh jerks it's way out of his chest. Not a proper laugh by any means, just a disbelieving breath and a shake of his head. So freaking Cas, a thing he hasn't experienced in so god damn long he wasn't prepared for it.

And that's exactly the kind of thing he was talking about- just little responses, little... things like that scream I'm Alive at him so loud, it pounds through his ears and makes his hands shake. It's the kindof thing he can't afford.

So he drops eyes eyes away again and turns. Lifts his hammer back up to the strut.

"Just go," he mutters, and resumes whacking.