How many movies have Kazuhiko Kato and Koichi Kitamura collaborated on?

They have worked on 5 movies together! Their first movie together was Sanshiro the Judoist (1981) while their highest rated movie together was Lupin the Third: Operation: Return the Treasure (2003). They have not worked together since Lupin the Third: Operation: Return the Treasure (2003). They are most known for their action films together.