My Sister Stole My Mage, I Bound the Lost High King

Iris, the young heiress of a renowned apothecary family, and her stepsister Vivian both attend the same marriage selection ceremony. Vivian deliberately takes the lead by binding herself to Iris's lover, the brilliant mage Cedric. Because of Vivian's ancient bloodline, Cedric decides to go along with the mistake and formally becomes her lifelong partner. Left humiliated, Iris is accidentally paired with Rowan, a powerless stablemaster—though in truth, Rowan is actually the king. Their relationship begins as a marriage of convenience but gradually blossoms into love. The moment Rowan's true identity is revealed, Iris becomes the most honored queen, and everyone who once looked down on them now kneels in remorseful regret.