How many movies have Masumi Hirayanagi and Shōji Sakai collaborated on?

They have worked on 10 movies together! Their first movie together was Groper Train: One Minute Before Departure (1985) 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).