Abandoned in a Horror Game, Adopted by the Final Boss

Follows Nora, a teen abandoned by her parents in a collapsing closed-beta horror game for their adopted sister Vivian. Instead of dying, she is taken in by Damien, the ruthless Dungeon Lord, who raises her as his daughter and makes her the dungeon's heir. Three years later, her former family returns seeking the Boss's heart, forcing Nora to confront her past and choose between the toxic family that discarded her and the monstrous one that chose her.