How many movies have Katsuyuki Shinohara and Kōji Wakamatsu collaborated on?

They have worked on 4 movies together! Their first movie together was Wet Dice (1974) while their highest rated movie together was Caterpillar (2010). 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.