How many movies have Giichi Samura and Ken Ootsuka collaborated on?

They have worked on 3 movies together! Their first movie together was Gundam Wing: The Endless Waltz (1998) and was their highest rated movie together. They have not worked together since Mobile Suit Zeta Gundam - A New Translation III: Love is the Pulse of the Stars (2006). They are most known for their animation films together.