Reborn: My Revenge As The QueenEpisode 15

Elena, the true Luminari princess, was betrayed by her family, stripped of her Crest for her adopted sister Vera, and burned alive. Reborn, she abandons her royal ties, takes the alias "Queen" in the Shadow Market, and rises as an elite unsealer. She forms a Sleep Covenant with Draven, the cursed Shadow Lord, exchanging her light to calm his darkness. After crushing Vera in public, her regretful mother suddenly appears.