How many movies have Hiromi Igarashi and Sayuri Hara acted in together?

They have worked on 6 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 THE IDOLM@STER CINDERELLA GIRLS 4thLIVE TriCastle Story ─346 Castle─ (2017).