How many movies have Kazuya Nakai and Tooru Fukushi collaborated on?

They have worked on 4 movies together! Their first movie together was Mardock Scramble: The First Compression (2010) while their highest rated movie together was Blue Exorcist: The Movie (2012). They have not worked together since Blue Exorcist: The Movie (2012). They are most known for their animation films together.