Sam Brain Injury POV post-apocalypse fic - FIC FOUND
I'm looking for a specific older post-apocalypse fic with Sam and Dean living together off the grid (I think it was Wincest but could have been gen). It is told through Sam's POV but he has some kind of traumatic brain injury so the story is fragmented. As the fic goes along, Dean is very protective and we get clues that Sam with his powers likely caused whatever happened and that he was injured but he doesn't remember anything really. They meet up with some other hunters or survivors and it appears that they are preparing for an attack/building a wall or something like that.