How many movies have Ken Iwate and Shintarô Nakata collaborated on?

They have worked on 5 movies together! Their first movie together was Groper Train Office Lady: Love in the Train (1994) while their highest rated movie together was Aiyoku Shûdôin: Jukujo, Chijo, Seijo (1995). They have not worked together since Dense Caress, Melting Tongues (1995).