How many movies have Hiroshi Sunaga and Shin-ichiro Shirakura collaborated on?

They have worked on 6 movies together! Their first movie together was Kamen Rider: THE FIRST (2005) and was their highest rated movie together. They have not worked together since Kamen Rider × Super Sentai × Space Sheriff: Super Hero Wars Z (2013). They are most known for their science fiction films together.