How many movies have Seiji Nakamitsu and Yoshikazu Katō collaborated on?

They have worked on 21 movies together! Their first movie together was No Panties, White Coat, Wet Lower Abdomen (2000) while their highest rated movie together was Twin Blades of the Ninja (2007). They have not worked together since Sukebe hanbô-ki: Môretsu tarashikomi (2021). They are most known for their drama films together.