How many movies have Ayaka Onishi and Ryushi Mizukami acted in together?

They have worked on 2 movies together! Their first movie together was Miroku (2013) while their highest rated movie together was Randen: The Comings and Goings on a Kyoto Tram (2019). They have not worked together since Randen: The Comings and Goings on a Kyoto Tram (2019).