How many movies have Hironobu Kageyama and Tetsuya Iwanaga collaborated on?

They have worked on 5 movies together! Their first movie together was Kamen Rider Heisei Generations: Dr. Pac-Man vs. Ex-Aid & Ghost with Legend Riders (2016) while their highest rated movie together was Kamen Rider Ex-Aid the Movie: True Ending (2017). They have not worked together since Kamen Rider Ex-Aid Trilogy: Another Ending - Kamen Rider Genm VS Lazer (2018). They are most known for their adventure films together.