How many movies have Oomi Ako and Tsukasa Kotobuki acted in together?

They have worked on 4 movies together! Their first movie together was Boxman ~There's No Safe I Can't Crack~ (2004) and was their highest rated movie together. They have not worked together since Oath of the Midnight Sun - Gustav III: A Battle by a Proud King (2015). They are most known for their music films together.