How many movies have Erina Ikuta and Momona Kasahara acted in together?

They have worked on 68 movies together! Their first movie together was Hello! Project 2015 Summer ~CHALLENGER~ (2015) while their highest rated movie together was Hello! Project DVD Magazine Vol.61 (2019). They have not worked together since Hello! Project 2021 Autumn "Zoku・Kachou Fuugetsu" (2021).