How many movies have Reina Kawasaki and Takashi Kawabata collaborated on?

They have worked on 2 movies together! Their first movie together was Donten: Laughing Under the Clouds - Gaiden: Chapter 3 - Conspiracy of the Military (2018) and was their highest rated movie together. They have not worked together since Kaguya-sama: Love Is War -The First Kiss That Never Ends- (2022).