How many movies have Toshihiro Satô and Yōichi Shiga collaborated on?

They have worked on 2 movies together! Their first movie together was Groper Train: Touch That Girl (1988) while their highest rated movie together was Welcome to the Ogenki Clinic: Feel Good All Over Again (1988). They have not worked together since Welcome to the Ogenki Clinic: Feel Good All Over Again (1988).