How many movies have Hiromi Niioka and Satoru Iriyoshi collaborated on?

They have worked on 17 movies together! Their first movie together was Gu-Gu Ganmo (1985) while their highest rated movie together was Yo-kai Watch Shadowside: Resurrection of the Demon King (2017). They have not worked together since Pokémon the Movie: Secrets of the Jungle (2020). They are most known for their animation films together.