How many movies have Kazuhide Tomonaga and Yoshinobu Michihata collaborated on?

They have worked on 12 movies together! Their first movie together was Chie the Brat (1981) while their highest rated movie together was The Piano Forest (2007). They have not worked together since Lupin the Third vs. Detective Conan: The Movie (2013). They are most known for their animation films together.