How many movies have Akeno Watanabe and Takayuki Hattori collaborated on?

They have worked on 7 movies together! Their first movie together was Mobile Suit Gundam: The Origin I - Blue-Eyed Casval (2015) while their highest rated movie together was Mobile Suit Gundam: The Origin III - Dawn of Rebellion (2016). They have not worked together since Doraemon: Nobita's Chronicle of the Moon Exploration (2019). They are most known for their science fiction films together.