How many movies have Futoshi Ohira and Hitomi Kuroki collaborated on?

They have worked on 4 movies together! Their first movie together was 20th Century Boys 1: Beginning of the End (2008) while their highest rated movie together was 20th Century Boys 3: Redemption (2009). They have not worked together since Don't Forget About Niini (2009). They are most known for their science fiction films together.