How many movies have Ayumi Kuroki and Naoi Zerai collaborated on?

They have worked on 5 movies together! Their first movie together was Rape Zombie: Lust of the Dead 2 (2013) while their highest rated movie together was Rape Zombie: Lust of the Dead 5 (2014). They have not worked together since Rape Zombie Side-Story: Hardcore of the Dead (2017). They are most known for their horror films together.