In the village of Seris lurked something unusual; a portal to the dark world known as the Abyss. Tasked with solving the issue and keeping everyone safe, Corvus, would select one of the girls living in the village, Abby, to satiate the Abyss' hunger, believing this would satisfy it and keep the village safe. The girl's sister, Sarah, would attempt to prevent her sister from being taken away, but a normal girl was no match against the Magistrate. Abby was taken away to be sacrificed, while Sarah, given a lock of her sister's hair as a memento, retreated to a church of The Eternal Pyre, as there was nowhere else to turn.
The sacrifice had begun, though when the Abyss responded, it was revealed it did not hunger for a soul to satisfy its hunger, but for a body. The village of Seris was promptly destroyed, leaving nothing but an Abyssal stained crater, the sacrificed girl, now a vessel for the Abyss, and the sole human survivor, Corvus.
In response, the Pyre would grant Sarah their power, transforming her into Furia, the Angel of Vengeance; she would make sure no one else would be lost to the Abyss.