How many movies have Kyôtarô Nishimura and Sei Izumida collaborated on?

They have worked on 3 movies together! Their first movie together was 西村京太郎スペシャル　日本一周「旅号」殺人事件 (2003) and was their highest rated movie together. They have not worked together since Kyotaro Nishimura's Travel Mystery 67: Murder in Hakone - Leaves & Mountains (2017). They are most known for their mystery films together.