How many movies have Hiroyuki Horiuchi and Susumu Matsunaga collaborated on?

They have worked on 4 movies together! Their first movie together was Pokémon the Movie: Hoopa and the Clash of Ages (2015) while their highest rated movie together was Code Geass: Lelouch of the Re;Surrection (2019). They have not worked together since Backflip!! The Movie (2022). They are most known for their animation films together.