How many movies have Naohiro Tafu and Yuki Kaji collaborated on?

They have worked on 2 movies together! Their first movie together was Berserk: The Golden Age Arc I - The Egg of the King (2012) while their highest rated movie together was Haikyuu!! The Movie: The End and the Beginning (2015). They have not worked together since Haikyuu!! The Movie: The End and the Beginning (2015).