How many movies have Chizuko Kusakabe and Hiroyuki Horiuchi collaborated on?

They have worked on 4 movies together! Their first movie together was Armitage: Dual Matrix (2002) while their highest rated movie together was Pokémon the Movie: I Choose You! (2017). They have not worked together since Backflip!! The Movie (2022). They are most known for their animation films together.