How many movies have Hiroshi Hiroyama and Kazuyuki Yamayoshi collaborated on?

They have worked on 3 movies together! Their first movie together was Fate/kaleid liner Prisma☆Illya: Vow in the Snow (2017) and was their highest rated movie together. They have not worked together since Fate/kaleid liner Prisma☆Illya: Licht Nameless Girl (2021). They are most known for their animation films together.