How many movies have Jin Yamamoto and Tetsuo Kobayashi collaborated on?

They have worked on 1 movie together! Their first movie together was I SAY YEAH! NeOSITE 10th Anniversary Party@Shibuya-AX (2006) and was their highest rated movie together. They have not worked together since I SAY YEAH! NeOSITE 10th Anniversary Party@Shibuya-AX (2006).