How many movies have Yasuko Kobayashi and Yui Ishikawa collaborated on?

They have worked on 5 movies together! Their first movie together was イルゼの手帳 ―ある調査兵団員の手記― (2013) while their highest rated movie together was Attack on Titan: The Roar of Awakening (2018). They have not worked together since Attack on Titan: Chronicle (2020). They are most known for their action films together.