How many movies have Akeno Watanabe and Akio Otsuka acted in together?

They have worked on 8 movies together! Their first movie together was Ghost in the Shell 2: Innocence (2004) while their highest rated movie together was Mobile Suit Gundam: The Origin III - Dawn of Rebellion (2016). They have not worked together since Mobile Suit Gundam: The Origin VI – Rise of the Red Comet (2018). They are most known for their science fiction films together.