How many movies have Masanori Tsujii and Yoko Oyagi collaborated on?

They have worked on 6 movies together! Their first movie together was Gappa, the Triphibian Monster (1967) while their highest rated movie together was Apartment Wife: Agony Afternoon (1972). They have not worked together since New Apartment Wife: Prostitution in Building #13 (1975). They are most known for their drama films together.