Screams of agony belonging to a mass of humans and other creatures were always filling the ears of the twin girls. They hated it. Everyday it was like that for them. Well... for most of their life at least.
Their human mother died when they were merely four years old. Kerberos, a loyal hellhound to Hades, informed his master about the incident. Hades ordered Kerberos to retrieve his daughters, and while the two girls slept, their father's friendly dog dragged them away.
Living in the underworld made them learn a few things such as knowing they're not the only demigods roaming the earth.
As the daughters of the God of the Underworld, they had... a pretty unique personality thanks to it. They were raised like princesses, getting everything they wanted and owned their own hellhound. You'd expect someone raised that way to be a brat and obnoxious, but they're not. Nobody hated being treated like royalty as much as the twins did.
With no desire to keep living as demi-goddesses, the twins left without taking a second glance back.
Eighteen years later, Selena and Alina found themselves traveling around the world.