How many movies have Nanase Okawa and Yukana collaborated on?

They have worked on 4 movies together! Their first movie together was X: The Movie (1996) while their highest rated movie together was Cardcaptor Sakura: The Sealed Card (2000). They have not worked together since Code Geass: Akito the Exiled 3: The Brightness Falls (2015). They are most known for their animation films together.