How many movies have Hitomi Kuroki and Ryûji Ichiyama collaborated on?

They have worked on 4 movies together! Their first movie together was 20th Century Boys: Beginning of the End (2008) while their highest rated movie together was 20th Century Boys 3: Redemption (2009). They have not worked together since Desperate Sunflowers (2016). They are most known for their science fiction films together.