How many movies have Eiji Komatsu and Yukimaro Ohtsubo 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 Armored Trooper VOTOMS: Case; Irvine (2010). They are most known for their animation films together.