How many movies have Ryouta Murai and Tatsuhito Okuda acted in together?

They have worked on 4 movies together! Their first movie together was Kamen Rider Decade: All Riders Super Spin-off (2009) while their highest rated movie together was Kamen Rider × Kamen Rider W & Decade: Movie War 2010 (2009). They have not worked together since Kamen Rider × Kamen Rider W & Decade: Movie War 2010 - Director's Cut (2010). They are most known for their science fiction films together.