Sylvarant

Sylvarant is the starting world in Tales of Symphonia. It is part of the cross-dimensional world Aselia, mirrored by Tethe'alla. There is a Chosen, Colette Brunel, who is sent to regenerate the world by making a pilgrimage to the seals and the Tower of Salvation, an enormous tower that reaches to the skies when it is time for the Chosen to go on the Journey of Regeneration. Sylvarant's moon is named "Tethe'alla", and "Sylvarant" is the name of Tethe'alla's moon. In Tales of Phantasia, Aselia has two moons, both of which are named after the dimensions that were fused to create it.

During Tales of Symphonia, Sylvarant is in the declining state of balance of the mana flow, with its mana being fed to Tethe'alla, although evidence in the game shows that Sylvarant has been in decline for a fairly long time due to the multiple failed Chosens following Spiritua's success 800 years before the start of the game. Similarly, this is the cause for Tethe'alla's significantly more advanced technology, having had centuries of development and progress due to the higher concentrations of mana.