How many movies have Kaosu Sumikura and Takehiko Koike collaborated on?

They have worked on 5 movies together! Their first movie together was Kowai Douga Noroi no Toshi Densetsu & Shinrei Toukou Zenshuu (2011) and was their highest rated movie together. They have not worked together since Neighbor Spirit Videos: Strict Selection Compilation of 30 Videos - Terror within a 60cm Radius (2015). They are most known for their horror films together.