o1: The Devil Within.
Centuries and centuries ago the Valkyries rampaged the Earth, choosing those in battle to die and be taken to Valhalla. Valkyries were known to be often quite beautiful and extremely wrathful women. The lowers rode into the battles on their black steeds, and the more powerful ones rained down from the sky with wings greater than their foes: the Angels.
For many years did Odin and his valkyries fight against God and his angels. You'd think demons would want in on the fight too, right? After all it's a fight for the souls: Valhalla, Heaven, or Hell. Demons actually kept their distance because Valhalla is a paradise similar to Heaven - a dining hall for the warriors who deserved the praise and endless peace. The angels and valkyrie fought relentlessly over the human souls, until they began to fight each other as well.
There was no peace between angels and valkyrie. The only thing to tame the fighting was the humans ceasing their fighting so they stopped losing so many people. Because of that, both deities had to step back and take what they could get for souls.
As the years passed, angels and valkyrie turned into stories to tell children and their existence was forgotten; they had turned into only a memory. But of course peace doesn't always last forever, and neither does the silence of a valkyrie.
She was once favoured amongst all of Lord Odin's valkyries, with hair as dark as the night (and often as disastrous as her own self), baby blue eyes that burned with an icy fire, and the strength of fifteen of her sisters put together. Nobody understood how such a messy, reckless, loud mouthed child could drag so many souls to Valhalla behind her. Born with wings greater than any angel they had ever come across, little Ranka was a force nobody dared test on the battle field.
Everywhere the girl went, death and destruction followed. The wind from her wings flattened land in a fifty mile radius with every body sprawled out in it's wake. As soon as the thunder clapped, lightning roared from the sky and there she was in all her might. As sly as a fox, while her sisters fought the angels, she gathered more souls to Valhalla. Though after a while, she began to wonder why exactly they were doing such things without any question.
Why fight the angels for dominance? Why force human souls to go to Valhalla? Why kill just to the souls will go to Valhalla?
And so one day, while her sisters were fighting the angels once more, Ranka appeared on the field with her lightning brighter than ever. Before it disapparated, she could hear the angels gasping, swearing that "Lucifer had returned". She knew not of any angels' names, nor did she particularly care until that moment. Who was this "Lucifer" she was being compared to?
As the light dimmed down and Ranka stood between the two forces, her wings outstretched proudly and dominantly behind her, both sides shrunk back. She looked between the two and was undoubtedly confused. Her sisters began demanding her help in order to wipe out the angels to which she replied a simple, "No."
Before a mutiny broke out and all Hell broke loose, Ranka flapped her enormous wings and sent both the valkyrie and the angels flying off in various directions. While everybody rushed to compose themselves and find out what was going on, Ranka shielded the humans with her magic and set them free from the battlefield. She was quickly summoned to Lord Odin before she could cause any further disaster and voiced her questions to him. Her Lord saw that as a challenge to the battlefield and demanded she cease but it was too late; once Ranka realized that all they were was soldiers meant to fight, she wanted no more.
Odin tried his hardest to rally the young girl, but she had gained a mind of her own. For that, he attempted in revoking her power and killing her as a human. Yet Ranka was still too strong even the Lord. She fled after fatally wounding Odin and cast Valhalla behind her to walk amongst the humans. After her "fall" as the angels called it, she was far too wrapped up in her own affairs to care about angels or find out why she was often compared to one called "Lucifer".
For thousands of years Ranka hid; the valkyrie, angels, and Lucifer behind her. But of course, all peace must come to an end when the world begins falling apart underneath her feet.