How many movies have Ayu Higashi and Yûichi Onuma collaborated on?

They have worked on 3 movies together! Their first movie together was Tohai: The Movie (2013) while their highest rated movie together was Saki Achiga-hen: Episode of Side-A (2018). They have not worked together since Saki Achiga-hen: Episode of Side-A (2018). They are most known for their drama films together.