How many movies have Hajime Zhangjiang and Osamu Iwamura collaborated on?

They have worked on 3 movies together! Their first movie together was Honto ni Atta! Noroi no Video: Vol. 83 (2019) and was their highest rated movie together. They have not worked together since Honto Ni Atta! Noroi No Video 92 (2021). They are most known for their horror films together.