How many movies have Hiroyuki Yamashita and Naoji Hounokidani collaborated on?

They have worked on 5 movies together! Their first movie together was Naruto Shippuden the Movie: The Will of Fire (2009) while their highest rated movie together was The Last: Naruto the Movie (2014). They have not worked together since The Last: Naruto the Movie (2014). They are most known for their animation films together.