How many movies have Hiroyuki Horiuchi and Kazunori Mizuno collaborated on?

They have worked on 4 movies together! Their first movie together was Naruto Shippuden the Movie: Bonds (2008) while their highest rated movie together was Bleach the Movie: Hell Verse (2010). They have not worked together since Road to Ninja: Naruto the Movie (2012). They are most known for their fantasy films together.