Diggie~
This is what I have so far.
Two children born on brightest night
one of the Dark, and one of the Light.
Small cities shall rise, great kingdoms shall fall
as Lord Chaos rules over all.
But when Mother Earth heaves final breath,
two children shall fight, even in death.
It's set in medieval times, on a different planet (Kokia) with three moons. So basically, two kids (male and female) were born at the same time to different mothers, but they were twins. The male was born into a rich family, and he was covered in silk, while the female was born in an alleyway, wrapped in rags. She never knew her father, and her mother died shortly after. In the prophecy, the Dark (the male) was to grow up evil, and he did; he became a Commander in the Chao army (who say they are good but they're really bad). But the female grew up good and noble, and she was sort of like a female version of Robin Hood minus the bow and the green hood.
In the prophecy, the two kids find each other, and start off fighting the Lord of Chaos, who led the Chao army. But then the male becomes evil, turns on the female, and kills both of them. But then they continue the fight in the Underworld.
(I'm not sure if you can put this in there or something, but the female has long black hair with a white streak through it, and black eyes with white pinpricks, and she wears a dark gray robe with patches of eyes on it, while the male has short white hair, with a streak of black, white eyes with black pinpricks, and he wears this off-white robe with triangular shoulder pads.)
Sorry for the word vomit. >.<