How many movies have Keijirô Hara and Yoshihito Momoki collaborated on?

They have worked on 1 movie together! Their first movie together was Senritsu Kaiki File Kowasugi! File 03: Legend of a Human-Eating Kappa (2013) and was their highest rated movie together. They have not worked together since Senritsu Kaiki File Kowasugi! File 03: Legend of a Human-Eating Kappa (2013).