How many movies have Ichirou Ookouchi and Kenta Miyake collaborated on?

They have worked on 7 movies together! Their first movie together was Berserk: The Golden Age Arc I - The Egg of the King (2012) while their highest rated movie together was Berserk: The Golden Age Arc III - The Advent (2013). They have not worked together since Code Geass: Akito the Exiled 5: To Beloved Ones (2016). They are most known for their animation films together.