How many movies have Keiichi Ichikawa and Takaaki Yamashita collaborated on?

They have worked on 3 movies together! Their first movie together was Interstella 5555: The 5tory of the 5ecret 5tar 5ystem (2003) and was their highest rated movie together. They have not worked together since Zatch Bell! Attack of Mechavulcan (2005). They are most known for their animation films together.