How many movies have Hiromi Niioka and Shinichi Yoshikawa collaborated on?

They have worked on 8 movies together! Their first movie together was Pokémon the Movie: Diancie and the Cocoon of Destruction (2014) while their highest rated movie together was Yo-kai Watch: Forever Friends (2018). They have not worked together since Pokémon the Movie: Secrets of the Jungle (2020). They are most known for their adventure films together.