How many movies have Natsuki Aikawa and Yuki Kaji acted in together?

They have worked on 3 movies together! Their first movie together was Attack on Titan: Crimson Bow and Arrow (2014) while their highest rated movie together was Attack on Titan: Wings of Freedom (2015). They have not worked together since Attack on Titan: Chronicle (2020). They are most known for their adventure films together.