How many movies have Masatô Ibu and Takeshi Shimizu collaborated on?

They have worked on 3 movies together! Their first movie together was Lorelei: The Witch of the Pacific Ocean (2005) while their highest rated movie together was I Want to Be a Shellfish (2008). They have not worked together since I Want to Be a Shellfish (2008). They are most known for their science fiction films together.