How many movies have Kōji Wakamatsu and Yûsaku Mitsuwaka collaborated on?

They have worked on 2 movies together! Their first movie together was Petrel Hotel Blue (2012) while their highest rated movie together was 11.25 The Day He Chose His Own Fate (2012). They have not worked together since 11.25 The Day He Chose His Own Fate (2012).