How many movies have Koji Shiraishi and Masahiro Mikami collaborated on?

They have worked on 7 movies together! Their first movie together was Senritsu Kaiki File Kowasugi! File 01: Operation Capture the Slit-Mouthed Woman (2012) while their highest rated movie together was Senritsu Kaiki File Kowasugi! The Most Terrifying Movie in History (2014). They have not worked together since Horror and Mystery World Scary! (2023). They are most known for their horror films together.