I'm sorry, I have some question: may I create directors category for Japanese director Mamoru Kanbe, who is the director at least three anime series, presented at IMFDB:
http://www.imfdb.org/wiki/Elfen_Lied
http://www.imfdb.org/wiki/Demon_Prince_Enma
http://www.imfdb.org/wiki/Sound_of_the_Sky
Also, may I create categories for directors of the anime films from the Case Closed series, if somebody of them are director of three or more films?