How many movies have Go Kuga and Tadashi Watanabe collaborated on?

They have worked on 25 movies together! Their first movie together was Dokyumento poruno: Zoku toruko tekkuniku daizenshû (1974) while their highest rated movie together was Taxi Yarou Yoru no Inka (1977). They have not worked together since Career Girl: Kyusho-zeme (1979).