How many movies have Hidetoshi Watanabe and Seiji Morita collaborated on?

They have worked on 3 movies together! Their first movie together was Butt Attack Punisher Girl Gautaman: The Birth of Gautaman (1994) 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.