How many movies have Akeno Watanabe and Yukiko Maruyama collaborated on?

They have worked on 4 movies together! Their first movie together was Mobile Suit Gundam: The Origin I - Blue-Eyed Casval (2015) while their highest rated movie together was Overlord: The Undead King (2017). They have not worked together since Overlord: The Dark Hero (2017). They are most known for their action films together.