How many movies have Kouichirou Natsume and Tatsuya Urano collaborated on?

They have worked on 2 movies together! Their first movie together was Naruto Shippuden the Movie: The Will of Fire (2009) while their highest rated movie together was Magical Girl Lyrical Nanoha: The Movie 1st (2010). They have not worked together since Magical Girl Lyrical Nanoha: The Movie 1st (2010).