How many movies have Mitsugi Okura and Rei Ishikawa collaborated on?

They have worked on 9 movies together! Their first movie together was Hibari ga oka no taiketsu (1957) while their highest rated movie together was The Ghosts of Kagami Pond (1959). They have not worked together since Lust of the White Serpent (1960). They are most known for their horror films together.