How many movies have Hideki Ito and Hideki Takahashi collaborated on?

They have worked on 4 movies together! Their first movie together was Fullmetal Alchemist the Movie: Conqueror of Shamballa (2005) while their highest rated movie together was The Girl Who Leapt Through Time (2006). They have not worked together since A Letter to Momo (2012). They are most known for their drama films together.