How many movies have Kappei Yamaguchi and Takeharu Sakurai collaborated on?

They have worked on 6 movies together! Their first movie together was Detective Conan: Private Eye in the Distant Sea (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 animation films together.