Xenosaga Official Design Materials - Translation from: http://home.comcast.net/~amablue/designmaterials.html
Shion and Febronia
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The Realian who hopes for a her sister's release
* Flashback
During the encephalon dive into KOS-MOS's mainframe, Febronia's church was
being constructed. Inside that space, 3 statues had been established; overhead
of the center statue, a Cross was hanging. In front of that altar, kneeled
Febronia.
The encephalon was a reconstruction based on Shion's memory. When she saw the
figure of Febronia existing in that place, Shion flashbacked to 14 years ago in
her mind. A gloomy interior. A woman whose abdomen was being devoured by 4 old
-style combat realians. Her neck bending unnaturally, her opened eyes were
sunken in, but they were seeing nothing. That face-- it was Febronia's.
The combat realians who appeared in the flashback differ only in shape from the
realians that are in use presently.
They were realians from the time before the Miltian conflict of 14 years ago.
It was Febronia who became the tragic figure that was attacked by them. And it
was Shion who was an eyewitness to the event.
* Febronia's request
Febronia, who talked to Shion in the encephalon, is not an existence that was
reconstructed based merely on Shion's memory.
During the encephalon dive, the characters of inner memory that were
reconstructed -- including the URTVs and Professor Joachim Mizrahi -- only
repeated speech and conduct from what was inside memory, but they did not make
direct communication with the characters who are diving. It is because they did
not go beyond being a mirage of a real, solid body. However, Febronia had a
conversation with the people who are diving. Similarly to Nephilim, who also
was seen as an apparition, Febronia's existence is one that resides in the
imaginary number domain, and she addressed everybody. Both she and Nephilim
drew close to each other toward Shion in her memory. Then, they announced
something that was important for the sake of the whole of humanity.
After that, in front of Shion & the group, there appeared a vision of a fertile
world. And then, a desolate world. In either case, two little-girl-model
realians, who were called Febronia's little sisters, were being imprisoned.
Febronia's request was to release the little girls. That was her plea.
The little girls named Cecily and Cathe, beyond being Realians, are not blood-
relative sisters with Febronia. They may be sisters of a higher manufacturing
process or ideology. The little girls were existences that were created for
purpose of controlling the Zohar. Therefore, with the release of the sisters
comes a release of the control of the Zohar. The Zohar is on Old Miltia. And
Old Miltia is sealed in the Abyss.
Because of this situation, it can be guessed that Febronia wishes for Shion to
go to Old Miltia, for the destruction of the Zohar control systerm.