Ayu in kagoshima??

[Delirium-Zer0]

That's what I was thinking, actually, that it might be the Kasutadon CM. ^^ It seemed like the most likely candidate. (I didn't know the Kasutadon CM was region-specific though. ^^ Learn something new every day!) But I'm sure there are PLENTY more CMs from that era that we've never seen, so it may or may not be what they meant. But it seems likely.

EDIT: BTW, thanks for the link, Zemus... that's a better copy of the CM than what I have. ^^