How many movies have Hochu Otsuka and Makoto Kobayashi collaborated on?

They have worked on 3 movies together! Their first movie together was Venus Wars (1989) while their highest rated movie together was Space Battleship Yamato 2202: Warriors of Love (2017). They have not worked together since Space Battleship Yamato 2202: Warriors of Love (2017). They are most known for their animation films together.