How many movies have Nobuyuki Fujimoto and Yoshio Katou collaborated on?

They have worked on 4 movies together! Their first movie together was The Boy and the Sea Turtle (2002) while their highest rated movie together was The Mother Who Became a Kite (2003). They have not worked together since The Story of the Blue-Eyed Girl (2009). They are most known for their animation films together.