Thread:Quick/@comment-26885750-20151123143527/@comment-33173-20151123162806

AOU show, full name "All Nippon Amusement Machine Operators' Union" (全日本アミューズメント施設営業者協会連合会)...

The best I could find from AOU 1998 was this, this, this, and this, which isn't much. But one of the links mentions Yo-Yo Yoko, Cloud and Tifa, so it may be closer to the final version (Or already the final one, as this AOU was held February 1998, the same month the game was released).

There is little (if any) footage of AOU 1998 in the web. I think your best chance with this one would be searching 1998 gaming magazines.