Final Fantasy III(Jap FF6) Shadow's Alternate Ending..Did it really exist?

This has stumped me for the longest freaking time..I've been trying to figure out the answer to this since my freshman year in highschool. Was there ever an alternate ending for Shadow? If there was...how in the hell do you end up getting it?

Bump.

I'm not sure what ending you are expecting, but if you wait for Shadow up to about the last minute on the Floating continent, he will stay with you to the end. Otherwise, you get a portait mentioning of him.

I'm talking about the dream sequences..I've heard that if you get all the dream sequences, you are able to have shadow leave Kefka's tower with you. The last dream sequence that I got was the one where shadow is in Thamsa...anyone know about this..it's been bugging me for years..