How many movies have Koji Hashimoto and Motoyoshi Tomioka collaborated on?

They have worked on 6 movies together! Their first movie together was King Kong vs. Godzilla (1962) while their highest rated movie together was Ghidorah, the Three-Headed Monster (1964). They have not worked together since Prophecies of Nostradamus (1974). They are most known for their science fiction films together.