Board Thread:Wiki Discussions/@comment-24924275-20140530195653/@comment-1512913-20140607093934

When the kanji match, there may or may not be a connection, but there more likely is, even more so since there's 100 ways to write the same thing in Japanese, so doing so suggests a connection. Another "loose" hints may be:
 * the hairstyle
 * the two dots
 * bone-related KKG, Kaguya had horns which are bones

That's it I guess :P