How many movies have Shinichi Nozaki and Yasuko Miyazaki collaborated on?

They have worked on 4 movies together! Their first movie together was Origin: Spirits of the Past (2006) while their highest rated movie together was Donten: Laughing Under the Clouds - Gaiden: Chapter 2 - The Tragedy of Fuuma Ninja Tribe (2018). They have not worked together since City Hunter: Shinjuku Private Eyes (2019). They are most known for their animation films together.