Ghoulish x vampiric life

Life on Earth changed forever when the existence of magic became a thing, and with that came the dreaded vampires and their ghoul servants.
The world is now overrun by these creatures that spawned out of nowhere with a thing for flesh and blood, many terrorize the world or take up land that once belonged to humans and spread their terror and influence far and wide across the globe.

Meet the Fotos siblings, Astaria and Saleen. Many years ago Astaria goes missing while fighting for humanity against the vampires that invade their nation leaving Saleen behind without him, many years later Astaria returns and is now a ghoul he turns Saleen into one as well to serve his vampire masters, with the two now back together they strive to rekindle their sibling relationship while they both try living their life amongst the vampires, now both of them enemies of humanity must find ways to live together once more while traversing their new lives together.
How will they survive their new life?