How many movies have Riku Sanjou and Taiko Katono collaborated on?

They have worked on 4 movies together! Their first movie together was Kamen Rider × Kamen Rider Drive & Gaim: Movie Wars Full Throttle (2014) while their highest rated movie together was Kamen Rider Drive Saga: Kamen Rider Mach / Kamen Rider Heart (2016). They have not worked together since Kamen Rider Drive Saga: Kamen Rider Mach / Kamen Rider Heart (2016). They are most known for their adventure films together.