How many movies have Kenji Hattori and Minami Takayama collaborated on?

They have worked on 4 movies together! Their first movie together was Ranma ½: The Movie — The Battle of Nekonron: The Fight to Break the Rules! (1991) while their highest rated movie together was Detective Conan: The Phantom of Baker Street (2002). They have not worked together since Detective Conan: Crossroad in the Ancient Capital (2003). They are most known for their animation films together.