How many movies have Masaki Sakamoto and Seiji Morita collaborated on?

They have worked on 8 movies together! Their first movie together was Fire Tripper (1985) while their highest rated movie together was Gunbuster: The Movie (2006). They have not worked together since Gunbuster vs Diebuster: Aim for the Top! The GATTAI!! Movie (2006). They are most known for their animation films together.