How many movies have Ayumi Arahata and Kaori Kobayashi collaborated on?

They have worked on 10 movies together! Their first movie together was Summer Wars (2009) while their highest rated movie together was Evangelion: 3.0+1.0 Thrice Upon a Time (2021). They have not worked together since Mobile Suit Gundam Hathaway (2021). They are most known for their animation films together.