How many movies have Mieko Hosoi and Tetsuya Nishio collaborated on?

They have worked on 4 movies together! Their first movie together was Naruto the Movie: Guardians of the Crescent Moon Kingdom (2006) while their highest rated movie together was Naruto Shippuden the Movie (2007). They have not worked together since Legend of the Millennium Dragon (2011). They are most known for their animation films together.