How many movies have Ken Tanaka and Saori Seto acted in together?

They have worked on 1 movie together! Their first movie together was Taxi Driver's Mystery Diary 37 - Mystery of Double Homicides from Tokyo to Hamamatsu (2015) and was their highest rated movie together. They have not worked together since Taxi Driver's Mystery Diary 37 - Mystery of Double Homicides from Tokyo to Hamamatsu (2015).