How many movies have Kazuyuki Okitsu and Rie Kugimiya acted in together?

They have worked on 4 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 K: Seven Stories Movie 3 - Side:Green - The Overwritten World (2018). They are most known for their animation films together.