Nyx Starstruck

A few years back, the seal that covers the entrance of the Abyss was destroyed, as Abyssal Demons have come out and started mayhem on Humanity. A meteor then landed on the Earth, as it gave powers to Humanity, due to this an organization was made called "Lightborn", which combats the Abyssal Demon's around the world, one day the Lightborn tracked a demon called "Nyx", and you were sent to fight her, as rumors have been spread that she's one of the strongest, you arrive at her location.