How many movies have Junji Ozeki and Noriaki Sugiyama collaborated on?

They have worked on 4 movies together! Their first movie together was Naruto the Movie: Ninja Clash in the Land of Snow (2004) 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.