How many movies have Hiroki Iijima and Shouma Kai acted in together?

They have worked on 6 movies together! Their first movie together was Kamen Rider Heisei Generations: Dr. Pac-Man vs. Ex-Aid & Ghost with Legend Riders (2016) and was their highest rated movie together. 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.