How many movies have Mototsugu Watanabe and Rina Hayashi collaborated on?

They have worked on 1 movie together! Their first movie together was Koisuru Onna-tachi: Triple Ecstasy: Keiren (1988) and was their highest rated movie together. They have not worked together since Koisuru Onna-tachi: Triple Ecstasy: Keiren (1988).