How many movies have Kiyohiko Shibukawa and Seiroku Nakazawa acted in together?

They have worked on 4 movies together! Their first movie together was Pornostar (1998) while their highest rated movie together was Hanging Garden (2005). They have not worked together since 11.25 The Day He Chose His Own Fate (2012). They are most known for their drama films together.