How many movies have Ribon Kawasaki and Tomoyuki Iwasaki collaborated on?

They have worked on 2 movies together! Their first movie together was 隠密くノ一忍法帳 餓鬼姉妹 (2005) while their highest rated movie together was Lady Ninja Kasumi (2005). They have not worked together since Lady Ninja Kasumi (2005).