How many movies have Keiichirō Yoshida and Shinobu Tsuruta collaborated on?

They have worked on 4 movies together! Their first movie together was 金田一耕助ファイルⅡ 獄門島 (2003) while their highest rated movie together was Taxi Driver's Mystery Diary 37 - Mystery of Double Homicides from Tokyo to Hamamatsu (2015). They have not worked together since Taxi Driver's Mystery Diary 38 (2015).