How many movies have Hiroshi Usui and Kaori Akimoto collaborated on?

They have worked on 1 movie together! Their first movie together was Ai Otsuka "Love Is Born" - 5th Anniversary 2008 - at Osaka - Jo Yagai Ongaku-Do on 10th of September 2008 (2008) and was their highest rated movie together. They have not worked together since Ai Otsuka "Love Is Born" - 5th Anniversary 2008 - at Osaka - Jo Yagai Ongaku-Do on 10th of September 2008 (2008).