How many movies have An Koshi and Takehiko Tamiya collaborated on?

They have worked on 3 movies together! Their first movie together was Amadera 〜 Kan'in shimai 〜 (2013) while their highest rated movie together was Rape Zombie: Lust of the Dead 5 (2014). They have not worked together since Rape Zombie: Lust of the Dead 5 (2014). They are most known for their horror films together.