Okay, the thing is I don't generally like song-fic written like this, because the lyrics never seem to match up to anything, but God, did this just prove me wrong. It's more of a poetic symbiosis than any kind of a song fic, and I have to admire (very jealously!) how you made each line work within that kind of structure.

I like the one-day-is-every-day structure of this, because it makes that kind of apocalypse have a more deeper meaning than just that of the world burning. Like nothing is left, not even time. So, the worst groundhog day ever.

You said in the beginning it's about Dean, and I don't know how this could work if it wasn't about him. Evil is just evil, it doesn't hold any meaning inside of it, besides the obvious. The love is survival ethos works just so because it is about Dean and his desire to keep the Sam alive who was his.

Okay, good fic. but that's an understantment again. and I've rambled on enough.