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同人小說〔由愛好者撰寫,人物或題材取自著名書籍、電視節目、電影等〕
Most fan fiction websites acknowledge that their authors do not own the characters involved.