How many movies have Naomi Oka and Ryoko Kinoyama acted in together?

They have worked on 1 movie together! Their first movie together was Joshidaisei no kokuhaku: Akai yûwakusha (1980) and was their highest rated movie together. They have not worked together since Joshidaisei no kokuhaku: Akai yûwakusha (1980).