Potentially ambiguous tag.
One use is for a character who looks just likeAzuma Hatsumi from the eroge and anime Yami to Boushi to Hon no Tabibito. Fujihime, however, has blue eyes while Hatsumi has red eyes. She appears in the book world where the protagonists meet Meirin. She is not referred to with a surname (only what would appear to be a title), and thus is tagged only Fujihime.