How many movies have Hironori Tanaka and Kenichi Kutsuna collaborated on?

They have worked on 4 movies together! Their first movie together was Naruto Shippuden the Movie: The Will of Fire (2009) and was their highest rated movie together. They have not worked together since Fullmetal Alchemist the Movie: The Sacred Star of Milos (2011). They are most known for their animation films together.