How many movies have Masaki Mōri and Urato Watanabe collaborated on?

They have worked on 3 movies together! Their first movie together was Kuronekokan ni Kieta Otoko (1956) while their highest rated movie together was The Ghosts of Yotsuya (1956). They have not worked together since Shin ono ga tsumi (1956). They are most known for their horror films together.