How many movies have Shinji Higuchi and Toshiyuki Kubooka collaborated on?

They have worked on 5 movies together! Their first movie together was Royal Space Force - The Wings Of Honneamise (1987) while their highest rated movie together was Gunbuster: The Movie (2006). They have not worked together since Gunbuster: The Movie (2006). They are most known for their animation films together.