How many movies have Hiroko Watanabe and Megumi Hayashibara collaborated on?

They have worked on 5 movies together! Their first movie together was Lupin the Third vs. Detective Conan: The Movie (2013) while their highest rated movie together was Detective Conan: The Darkest Nightmare (2016). They have not worked together since Detective Conan: Black Iron Submarine (2023). They are most known for their action films together.