How many movies have Kazuhiko Kato and Kiyoshi Kobayashi collaborated on?

They have worked on 38 movies together! Their first movie together was Lupin the Third: The Mystery of Mamo (1978) while their highest rated movie together was Lupin the Third: Goemon's Blood Spray (2017). They have not worked together since Lupin III: The First (2019). They are most known for their animation films together.