How many movies have Kenji Takahashi and Wakana Yamazaki collaborated on?

They have worked on 2 movies together! Their first movie together was Case Closed: The Fist of Blue Sapphire (2019) while their highest rated movie together was Detective Conan: The Scarlet Bullet (2021). They have not worked together since Detective Conan: The Scarlet Bullet (2021).