Oh, wow, I'm so excited to see this finished! This was one of the very first stories I read when I got into the SPN fandom and so it's really awesome to read this final part, even so long after the others. Loved the ending, loved the sacrifices they made for each other, especially the fact that Sam is ultimately okay with having a vampire for a brother. Oh, boys.

Again, really great to get a resolution to this. Thanks so much for posting, and indeed for the story as a whole.