How many movies have Hiroyuki Watanabe and Yuka Ônishi acted in together?

They have worked on 2 movies together! Their first movie together was 雀狼伝2 必殺！！亜空間殺法 (2000) and was their highest rated movie together. They have not worked together since 雀狼伝3 必殺！！亜空間殺法 (2001).