The Ring World was a great manmade construct orbiting a star with substantial synthetic living zones, a form of world suitable for human inhabitation. The former world of Xillia—the present Bloodmoon Abyss and the world where the luminous humanoid, or Light's true form dwelled—had been filled with ether. Even the continents were all floating islands, their oceans unrooted aerial realms.
The sun of that world had withered in the distant past. The civilizations inhabiting Xillia hence joined forces in moving the floating islands; their plan was to combine their continents into a ring near the sun. There, they would do all they could to obtain heat and light and keep surviving… naturally, the plan failed as the entire world met its end by the unholy ritual of the Black Fog's main body, finally becoming a blood moon that hung in the skies which was also Light's original form.
