Those who hadn't read "Dragon Raja 1" might be confused about why Nono was called "Frigga Three." It came from Nono's repeated visions in "Dragon Raja 1."
Here's the original text from "Dragon Raja 1":
She struggled in agony, but some cold metal apparatus held her tightly in place... Just as she thought she was about to die, the metal apparatus lifted her from the water. Red and white lights flashed before her eyes, and a mechanical voice came from above her head: "The seventeenth execution has concluded. Suffocation time: forty-five seconds. Frigga Three, you may begin your statement."
...The girl wore white clothes mottled with bloodstains. She opened her one remaining blood-red eye, a desolate smile at the corner of her mouth. "Don't waste your time... I don't remember anything... Kill me and start over..." Her long red hair hung wet around her, and though her eyes were vacant, they still held a trace of stubbornness. The girl grinned, revealing bloodstained white teeth... It was herself!
This vision of Nono's repeatedly appeared in "Dragon Raja 1," so it essentially confirmed Nono's identity as "Frigga Three."
If there was a Number Three, then there had to be a Number Two, a Number One, and a Number Zero as the prototype... Such were the designations of the test subjects.
Why did Nono have anything to do with the White King?
"Dragon Raja 1":
In the bottomless darkness of his heart, a pair of Golden Eyes slowly opened. Images flashed before his eyes like sparks from flint and steel. Chaotic lines, seemingly outlined in ink, writhed like snakes and formed picture after picture: a colossal dragon spread its wings atop a mountain by the sea; the World Tree sprouted; the rooster atop the tree crowed; a giant serpent rolled through