How many movies have Iwao Ishii and Noboru Nakata collaborated on?

They have worked on 4 movies together! Their first movie together was Watch Out, Crimson Bat! (1969) while their highest rated movie together was Tora-san's Love Call (1971). They have not worked together since Tora-san's Dream-Come-True (1972). They are most known for their comedy films together.