I'm not sure I follow on the make a toplist but put erotic stories on subpages. With that said original erotic stories getting 1 way backlinks really can't be bad.
Letting other people use them might not be the best idea because of duplicate content penalization, however you can let people use a shorter written up summary of the story for a link back to your original story.
Better to get link backs to the story pages than the main page IMO. Still a link is a link is a link
Put up a 301 redirect on the old pages and direct to the new place.