The Abused Princess is the Demon Lord

After losing a dice gamble, Abyss ruler Lucia is stripped of her powers and trapped in the frail body of Elina, a tormented, abused princess. Enduring mistreatment from her cruel husband Raymond, his mistress Vivian and jealous royal sister Charlotte, she unleashes deadly kneeling curses to crush all wrongdoers. Reunited with her remorseful imperial parents, she avenges Elina fully. To spare her adoptive family, Lucia sacrifices her demonic core, reincarnating as a black raven to stay by the res