How many movies have Chisato Okai and You Kikkawa acted in together?

They have worked on 21 movies together! Their first movie together was Hello! Project 2007 Summer 10th Anniversary Dai Kanshasai ~Hello☆Pro Natsu Matsuri~ (2007) while their highest rated movie together was Hello! Project 2014 COUNTDOWN PARTY 2014-2015 ~GOODBYE & HELLO!~ (2014). They have not worked together since Hello! Project 2015 Hina Fes ~Mankai! The Girls' Festival~ ℃-ute Premium (2015).