How many movies have Hiroyuki Nishimura and Mitsuru Hongo collaborated on?

They have worked on 7 movies together! Their first movie together was I am THE Shiratori Reiko! (1990) while their highest rated movie together was Crayon Shin-chan: Great Adventure In Henderland (1996). They have not worked together since Sakura Wars: The Movie (2001). They are most known for their animation films together.