fanfiction that obtained enough popularity as to have inspired readers to write fanfiction based on those stories, despite the fact that the original story is fanfiction in and of itself. recursive fanfiction are well-loved themselves that other writers treat them as a framework from which they base their own stories on. the original author may or may not acknowledge these as being part of their continuity, have a positive reaction, encourage derivative works, and even adopt some or all of it into the canon of their own shared "fan verse" continuity.