How many movies have Akemi Okamura and Hiroshi Naka acted in together?

They have worked on 8 movies together! Their first movie together was Lupin the Third: Dragon of Doom (1994) while their highest rated movie together was One Piece: Adventure of Nebulandia (2015). They have not worked together since One Piece: Stampede (2019). They are most known for their animation films together.