How many movies have Kaede Oshiro and Sen Arima collaborated on?

They have worked on 6 movies together! Their first movie together was Hitozuma no chishû: Numeru matagura (2012) while their highest rated movie together was Lewd Fetish: Peverted Big Ass (2013). They have not worked together since Sex jikken-shitsu: Aegu juku kyonyû (2013).