How many movies have Ryôko Ishihama and Toshio Taguchi collaborated on?

They have worked on 2 movies together! Their first movie together was Igaku hakase tsuku bôhei no sei igaku kôza 4: Virgin (1973) and was their highest rated movie together. They have not worked together since Igaku hakase tsuku bôhei no sei igaku kôza 6: Lesbian (1973).