How many movies have Koichi Yamadera and Ryota Iwasaki acted in together?

They have worked on 2 movies together! Their first movie together was Shinkansen Henkei Robo Shinkalion The Movie: The Marvelous Fast ALFA-X That Comes From the Future (2019) while their highest rated movie together was Zorori the Naughty Hero: La La La♪ A Star is Born (2022). They have not worked together since Zorori the Naughty Hero: La La La♪ A Star is Born (2022).