How many movies have Mizuka Takahashi and Toshiharu Sugie collaborated on?

They have worked on 3 movies together! Their first movie together was xxxHOLiC The Movie: A Midsummer Night's Dream (2005) and was their highest rated movie together. They have not worked together since Pokémon the Movie: Volcanion and the Mechanical Marvel (2016). They are most known for their animation films together.