How many movies have Kazunari Kouchi and Wakana Yamazaki collaborated on?

They have worked on 16 movies together! Their first movie together was Detective Conan: The Time Bombed Skyscraper (1997) while their highest rated movie together was Detective Conan: Three Days with Heiji Hattori (2007). They have not worked together since Detective Conan: Dimensional Sniper (2014). They are most known for their animation films together.