How many movies have Kazuya Kamihoriuchi and Seiji Takaiwa collaborated on?

They have worked on 3 movies together! Their first movie together was Kamen Rider OOO Wonderful: The Shogun and the 21 Core Medals (2011) while their highest rated movie together was Kamen Rider Ghost RE:BIRTH - Kamen Rider Specter (2017). They have not worked together since Kamen Rider Heisei Generations FINAL: Build & Ex-Aid with Legend Riders (2017). They are most known for their adventure films together.