How many movies have Hiroaki Kitano and Masataka Kubota collaborated on?

They have worked on 3 movies together! Their first movie together was 13 Assassins (2010) while their highest rated movie together was Rurouni Kenshin Part I: Origins (2012). They have not worked together since Rurouni Kenshin Part I: Origins (2012). They are most known for their drama films together.