How many movies have Osamu Iwamura and Yoshihiro Nakamura collaborated on?

They have worked on 40 movies together! Their first movie together was Honto Ni Atta! Noroi No Video 58 (2014) while their highest rated movie together was Honto ni Atta! Noroi no Video 101 (2023). They have not worked together since Honto ni Atta! Noroi no Video 104 (2023). They are most known for their horror films together.