**Found!**
Hi everyone!
I'm looking for a fic I've read before, and I'm pretty sure it was on here? Maybe.
It's set around the whole leviathan era I believe, in a kind of post apocalyptic setting. The main things/scenes I remember are:
1) I think in the beginning Dean takes Sam to a cabin somewhere (Dean has a broken leg) and Sam is practically comatose. It takes a long time for him to start speaking.
2)Sam has really bad nightmares and the only thing Dean can find to stop them is some sigil he carves into Sam's back with a knife. He does this at least twice throughout the story.
3) At some point they get invited to join this group of survivors/hunters and eventually help train them. They also help plan an attack on the leviathans.
4) Sam mostly uses knives because he feels more in control.
5) Walt and Roy make an appearance.
6) The boys are completely bamf. Most people are terrified of them and think of them as "legendary" and I think for awhile they hide their real names because of it.
7) Towards the end the boys have a fight. They're extremely codependent.

I've been looking for this fix for awhile, so any help finding it is greatly appreciated. Thank you!