How many movies have Kengo Matsumoto and Masashi Yokoi collaborated on?

They have worked on 2 movies together! Their first movie together was Naruto Shippuden the Movie: The Will of Fire (2009) while their highest rated movie together was Sword Art Online: The Movie – Ordinal Scale (2017). They have not worked together since Sword Art Online: The Movie – Ordinal Scale (2017).