Wincest Fanfic..
Set after season three. A routine hunt goes horribly wrong when Dean decides to engineer their plan in a way that will get Sam to deliver the killing shot. After Sam confesses that he wants them to leave the life, Dean is convinced that by letting Sam be hero and save the day, Sam will change his mind. But he doesn't account for a break in a balcony railing and one completely broken little brother. Things go beyond their control and the two of them must settle down in a quiet town in Michigan, but Dean's harboring guilt and Sam is so, so, so lost, and he doesn't understand why Dean avoids him or why their road life has fizzled away. A curtain fic dealing with permanent injury, angst, and various types of trauma, and fluffy domesticity.
Words:50437 complete
Art by siriala

http://archiveofourown.org/works/5767879?view_full_work=true