How many movies have Hirotoshi Arai and Yoshihiro Maeda collaborated on?

They have worked on 4 movies together! Their first movie together was Puella Magi Madoka Magica the Movie Part III: Rebellion (2013) and was their highest rated movie together. They have not worked together since Fate/stay night: Heaven's Feel II. Lost Butterfly (2019). They are most known for their fantasy films together.