BIGBANG!REC
It's a death!fic and it left me all kinds of drained, but I'm reccing the hell out of this because it is one of the best fics I've read.
Over The Hills And Far Away by hansons_angel
Summary: This isn’t a story about the Apocalypse. It’s not even really a story about demon hunting and the supernatural, though all these things are featured. It’s an AU story about the deep bond that brothers have, and the lengths they’ll go to for each other, beginning when Sam and Dean Winchester are children, and Sam needs a kidney transplant. It’s not about one brother over the other, but the idea that, without one brother there isn’t the other. It’s an exploration of sacrifice and unconditional love, the study of what family can mean -- what it should mean. It’s about love and despair, fear and grief, anger and heroism and ultimately -- hope.