How many movies have Isamu Imakake and Yuuichi Mizusawa collaborated on?

They have worked on 4 movies together! Their first movie together was The Laws of Eternity (2006) while their highest rated movie together was The Laws of the Universe: The Age of Reimei (2018). They have not worked together since The Laws of the Universe: The Age of Reimei (2018). They are most known for their animation films together.