How many movies have Ichiro Tsuda and Shōji Sakai collaborated on?

They have worked on 22 movies together! Their first movie together was Female Prisoners: Brutal Treatment (1984) while their highest rated movie together was Welcome to the Ogenki Clinic: Feel Good All Over Again (1988). They have not worked together since Chikan densha: yume yubi no atsui shirabe (2012).