How many movies have Akihiko Tamura and Rikiya Koyama collaborated on?

They have worked on 2 movies together! Their first movie together was Naruto Shippuden the Movie: The Lost Tower (2010) while their highest rated movie together was Naruto Shippuden the Movie: Blood Prison (2011). They have not worked together since Naruto Shippuden the Movie: Blood Prison (2011).