How many movies have Eiji Wakamatsu and Megumi Hayashibara collaborated on?

They have worked on 3 movies together! Their first movie together was Case Closed: The Fist of Blue Sapphire (2019) while their highest rated movie together was My Hero Academia: World Heroes' Mission (2021). They have not worked together since My Hero Academia: World Heroes' Mission (2021). They are most known for their action films together.