Zombie apocalypse, and Dean as the leader of the survivor's camp. If he had too much on his shoulders as a hunter, now...

You knock on the tent's wall and come in without more warning. There's a bleeding cut on your cheek, and you probably have more wounds, but no bite marks. That eases his heart, even if he remains serious and rather cold. The world is ending. He can't afford love.

Even if that makes him an asshole. "How was the mission?" He asks calmly, looking back down at his map.