How many movies have Director O. and Meru Yanai collaborated on?

They have worked on 1 movie together! Their first movie together was No Way! My Homeroom Teacher Found Out I’m A Camgirl! Meru Yanai (2020) and was their highest rated movie together. They have not worked together since No Way! My Homeroom Teacher Found Out I’m A Camgirl! Meru Yanai (2020).