Rinoa is Ultemicia

[Serapy]

Remember that this game is not meant to be simple and straight, the designers want the audience to create interpretations. This game is more like art.
In other words, the game is not very clear, so it becomes open interpretation for everybody.
This principle is one of the reasons why FF8 was such a good game.

If you e-mail SquareEnix, asking them about the the truth of whether R is U, they won't answer you, simply because they care about that principle. If they have answered you, it would ruin the game in some sense.

There's an evidence that Ultimecia is Rinoa.
There's an evidence that Ultimecia is not Rinoa.

See what I mean? You can believe what you want, it's meant to be like that.
I personally believe that Rinoa is Ultimecia in a multi-dimension world.