How many movies have Takaaki Sekizaki and Yoshio Usuda collaborated on?

They have worked on 3 movies together! Their first movie together was Naruto Shippuden the Movie: The Lost Tower (2010) while their highest rated movie together was Aria the Avvenire (2015). They have not worked together since Aria the Avvenire (2015). They are most known for their animation films together.