Title: "Old Characters Never Die"
Xover with: Harry Potter, Buffy, cameo from others
Genres: Xover, standlone, crack, postseries, slash if you squint, noromo, gen, friendship
Summary: Fiction Afterlife Housing Authority requests all citizens appear at the Hogwarts Great Hall for sorting. Compliance voluntary unless you don't know what's good for you.
DVD Extra: Go here for the sorting table I used to write this fic, including houses that could've been.