How many movies have Leiji Matsumoto and Masako Ikeda collaborated on?

They have worked on 8 movies together! Their first movie together was Galaxy Express 999: The Movie (1979) while their highest rated movie together was Galaxy Express 999: Can You Live Like a Warrior!! (1979). They have not worked together since The Galaxy Railways: A Letter from the Abandoned Planet (2006). They are most known for their science fiction films together.