How many movies have Ami Kawai and Sei Hiraizumi acted in together?

They have worked on 1 movie together! Their first movie together was Kyotaro Nishimura's Travel Mystery - Soya Honsen Murder Incident (2001) and was their highest rated movie together. They have not worked together since Kyotaro Nishimura's Travel Mystery - Soya Honsen Murder Incident (2001).