How many movies have Junji Masuda and Takaharu Saeki collaborated on?

They have worked on 3 movies together! Their first movie together was Moonlight Mask: The Monster Gorilla (1959) while their highest rated movie together was Run, Genta, Run! (1961). They have not worked together since Run, Genta, Run! (1961). They are most known for their drama films together.