How many movies have Hajime Okayasu and Satoshi Ichikawa collaborated on?

They have worked on 8 movies together! Their first movie together was Doraemon: Nobita's Diary on the Creation of the World (1995) while their highest rated movie together was Shin Chan: The Adult Empire Strikes Back (2001). They have not worked together since Doraemon: Nobita and the Windmasters (2003). They are most known for their animation films together.