(Here's a new one)
The Legend of Sefirah
Aon (god) formed Igros on the first day of the Golden Age of Igros out of nothing. Aon made the mighty Avalos to watch over Igros. The Avalos were Llunna of Light, Forrtu of Ground, Qullkin of Fire, Lumieres of Water, and Diablen of Darkness. They each now house their power in a temple across Igros hidden from all maps to only be discovered through divine power.
Aon is a being of pure light who is without sin. During the Silver Age of Igros Aon saw the error of man and wanted them to be cleansed of all their unrighteousness. So Aon took all sins of man and sealed them away forever more. Now those who cleanse their Celestial (ritual) can find themself in the right standing with Aon...expect that the seal did break.
A being was born that day during the Silver Age; the incarnation of all the dark Celestial that Aon sealed away. The child was found by an old man who raised the child and named him Sefirah. Sefirah grew up to become a powerful warrior. At the age of 8 he defeated Headmaster Smith Jones in an all out battle within two minutes. Sefirah grew quickly and became more powerful than even the Avalos themselves.
Sefirah was given the blade of darkness forged by Diablen known as the Enfer Sword to wield. Sefirah's power continued to grow soon becoming a threat to Aon himself. Sefirah then developed the darkest Celestial attack; the Dark Harvest. It feeds off the very life force of the opponent and is channeled into the Enfer Sword. The blade becomes engulfed in flames of shadow.
With that Sefirah can use the flames to cut through the very Celestial of the opponent and that becomes an instant kill. The attack cannot be blocked and so Sefirah was given the name that day as the Fallen Angel for his own power corrupted his mind when he discovered that he is nothing more than the darkness Aon threw away. Sefirah vanished before the start of the Bronze Age...no one knew what happened to him. His legend lives on...