How many movies have Kiyoshi Hirose and Rie Kugimiya collaborated on?

They have worked on 3 movies together! Their first movie together was Arpeggio of Blue Steel -Ars Nova DC- (2015) while their highest rated movie together was Arpeggio of Blue Steel -Ars Nova Cadenza- (2015). They have not worked together since Batman Ninja (2018). They are most known for their action films together.