How many movies have Koji Watanabe and Michinori Chiba collaborated on?

They have worked on 3 movies together! Their first movie together was Slayers Great (1997) while their highest rated movie together was Mobile Suit Gundam 00: A Wakening of the Trailblazer (2010). They have not worked together since Mobile Suit Gundam 00: A Wakening of the Trailblazer (2010). They are most known for their animation films together.