How many movies have Mutsuki Watanabe and Tomoka Kurokawa collaborated on?

They have worked on 2 movies together! Their first movie together was Detective Conan Drama Special 1: The Letter of Challenge (2006) while their highest rated movie together was Detective Conan Drama Special 2: Confrontation With the Men in Black (2007). They have not worked together since Detective Conan Drama Special 2: Confrontation With the Men in Black (2007).