How many movies have Eiko Koike and Yukihiko Tsutsumi collaborated on?

They have worked on 6 movies together! Their first movie together was 2LDK (2003) while their highest rated movie together was Requiem from the Darkness: Kowai (2005). They have not worked together since 20th Century Boys 3: Redemption (2009). They are most known for their comedy films together.