How many movies have Director O. and Ichika Nagano collaborated on?

They have worked on 2 movies together! Their first movie together was Small Love Story Between Runaway Girl And Older Man Ichika Nagano (2021) and was their highest rated movie together. They have not worked together since The Secret Lovey-Dovey Married Life Of The Deputy Head Teacher And Me. Ichika Nagano. (2021).