How many movies have Keiichi Yasui and Ken'ichi Nagira collaborated on?

They have worked on 1 movie together! Their first movie together was Dark Tales of Japan - Special Edition: 10 Most Terrifying Things in History that Really Happened (2005) and was their highest rated movie together. They have not worked together since Dark Tales of Japan - Special Edition: 10 Most Terrifying Things in History that Really Happened (2005).