How many movies have Haruka Kawamura and Koji Shiraishi collaborated on?

They have worked on 2 movies together! Their first movie together was Senritsu Kaiki File Kowasugi! File 03: Legend of a Human-Eating Kappa (2013) while their highest rated movie together was Senritsu Kaiki File Kowasugi! Final Chapter (2015). They have not worked together since Senritsu Kaiki File Kowasugi! Final Chapter (2015).