How many movies have Keiichi Hara and Takafumi Hayashi collaborated on?

They have worked on 3 movies together! Their first movie together was Crayon Shin-chan: Pursuit of the Balls of Darkness (1997) and was their highest rated movie together. They have not worked together since Crayon Shin-chan: Explosion! The Hot Spring's Feel Good Final Battle (1999). They are most known for their comedy films together.