How many movies have Yūsuke Watanabe and 川村一代 collaborated on?

They have worked on 2 movies together! Their first movie together was Yoru no yūwaku-sha hisho-chi no kyōfu kinpatsu bijo o nerau kyūketsu no kiba (1982) and was their highest rated movie together. They have not worked together since Private Detective DOBU 5: The Pinwheel Murder Case (1983).