How many movies have Masayuki Katou and Tsuguyuki Kubo collaborated on?

They have worked on 3 movies together! Their first movie together was Naruto the Movie: Legend of the Stone of Gelel (2005) while their highest rated movie together was Boruto: Naruto the Movie (2015). They have not worked together since Boruto: Naruto the Movie (2015). They are most known for their animation films together.