How many movies have Keiko Tsuzuki and Toshihiko Oda acted in together?

They have worked on 4 movies together! Their first movie together was Woman on the Night Train (1972) while their highest rated movie together was The Sloe-eyed Siren (1972). They have not worked together since Enka Jôshikô: Kizudarake no Kaben (1973).