How many movies have Seiko Asai and Tomoaki Kado collaborated on?

They have worked on 3 movies together! Their first movie together was Brave Story (2006) while their highest rated movie together was Sword Art Online: The Movie - Ordinal Scale (2017). They have not worked together since Sword Art Online: The Movie - Ordinal Scale (2017). They are most known for their adventure films together.