How many movies have Nobuhiro Muto and Toshiharu Sugie collaborated on?

They have worked on 4 movies together! Their first movie together was Book Girl (2010) while their highest rated movie together was Naruto Shippuden the Movie: Blood Prison (2011). They have not worked together since Eureka: Eureka Seven Hi-Evolution (2021). They are most known for their animation films together.