How many movies have Director O. and Riho Takahashi collaborated on?

They have worked on 1 movie together! Their first movie together was My Secret Lovey-Dovey Married Life With My Homeroom Teacher. Riho Takahashi (2021) and was their highest rated movie together. They have not worked together since My Secret Lovey-Dovey Married Life With My Homeroom Teacher. Riho Takahashi (2021).