How many movies have Keijirô Hara and Masahiro Mikami collaborated on?

They have worked on 9 movies together! Their first movie together was Rape Zombie: Lust of the Dead (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 Rape Zombie: Lust of the Dead 5 (2014). They are most known for their horror films together.