How many movies have Hirona Oura and Rikako Sasaki acted in together?

They have worked on 5 movies together! Their first movie together was Hello Pro Kenshuusei 2013 Winter Micchaku (2013) while their highest rated movie together was Hello! Project 2013 COUNTDOWN PARTY 2013-2014 ~GOODBYE & HELLO!~ (2013). They have not worked together since Petit Best 15 (2014).