How many movies have Hidetoshi Kageyama and Koichi Hoshino acted in together?

They have worked on 3 movies together! Their first movie together was Bathhouse 911: Jellyfish Bliss (1978) while their highest rated movie together was Angel Guts: Nami (1979). They have not worked together since Koichiro Uno's Moist and Steamy (1979).