How many movies have Keiichi Hara and Kiaki Tetsura collaborated on?

They have worked on 2 movies together! Their first movie together was Crayon Shin-chan: The Hidden Treasure of the Buri Buri Kingdom (1994) while their highest rated movie together was Crayon Shin-chan: Pursuit of the Balls of Darkness (1997). They have not worked together since Crayon Shin-chan: Pursuit of the Balls of Darkness (1997).