How many movies have Tetsuya Ohno and Toshihiko Horiyama collaborated on?

They have worked on 1 movie together! Their first movie together was Gyakuten Saiban Special Courtroom 2008 Orchestra Concert ~Gyakuten Meets Orchestra~ DVD Book (2008) and was their highest rated movie together. They have not worked together since Gyakuten Saiban Special Courtroom 2008 Orchestra Concert ~Gyakuten Meets Orchestra~ DVD Book (2008).