How many movies have Shiro Hamaguchi and Yoichi Sekine collaborated on?

They have worked on 5 movies together! Their first movie together was Girls und Panzer der Film (2015) while their highest rated movie together was The Magnificent KOTOBUKI: The Movie (2020). They have not worked together since Girls und Panzer das Finale: Part III (2021). They are most known for their action films together.