How many movies have Keisuke Yukioka and Toshitaro Nakao collaborated on?

They have worked on 5 movies together! Their first movie together was Passion and Rifle Bullets (1955) while their highest rated movie together was Smashing the 0-Line (1960). They have not worked together since Cat Girls Gamblers: Abandoned Fangs of Triumph (1966). They are most known for their crime films together.