How many movies have Jouji Nakata and Ryo Hirohashi acted in together?

They have worked on 6 movies together! Their first movie together was Sergeant Keroro The Super Duper Movie 5: Creation! Ultimate Keroro, Wonder Space-Time Island (2010) while their highest rated movie together was Working!!! Lord of the Takanashi (2016). They have not worked together since Tamayura: Graduation Photo Part 4 - Ashita (2016). They are most known for their animation films together.