How many movies have Shigekazu Ikuno and Tomoyuki Tanaka collaborated on?

They have worked on 6 movies together! Their first movie together was Operation Sewer Rats (1962) while their highest rated movie together was Godzilla vs. Biollante (1989). They have not worked together since Godzilla vs. Biollante (1989). They are most known for their drama films together.