How many movies have Tokiemon Futsuzawa and Yasumasa Koyama collaborated on?

They have worked on 2 movies together! Their first movie together was Girls und Panzer der Film (2015) while their highest rated movie together was Fate/strange Fake -Whispers of Dawn- (2023). They have not worked together since Fate/strange Fake -Whispers of Dawn- (2023).