fan·ficn /ˈfænfɪk/ (also fan fiction or fanfiction) noun [uncountableU]
1n stories that use characters or events from famous books, television programmes, or films, but which are written by a fan of the original book etc (= someone who likes it very much ) , not the book’s real writer同人小说〔由爱好者撰写,人物或题材取自著名书籍、电视节目、电影等〕
Most fan fiction websites acknowledge that their authors do not own the characters involved.