Lost bookmark! Destiel End!verse angst
Arrgh! Help! I lost a bookmark and can't find one of my faves; it's end!verse, and Cas's wings get damaged, Dean ends up having to amputate them and by the end the reader has to assume that's why Cas is the way he is in 2014. It was on lj, pretty sure, although I would love to find it on AO3.