How many movies have Kazuhiro Nagano and Mai Kadowaki collaborated on?

They have worked on 5 movies together! Their first movie together was Fate/kaleid liner Prisma☆Illya: Vow in the Snow (2017) while their highest rated movie together was Fate/stay night: Heaven's Feel III. Spring Song (2020). They have not worked together since Fate/kaleid liner Prisma☆Illya: Licht Nameless Girl (2021). They are most known for their animation films together.