Hwanghu Jarireul Beorigetseumnida

Once Crown Princess of the Empire of Kotrov, Adelheid is reduced to a political pawn by her own mother when she is married off to Emperor Karl Ulrich Echmont of the faraway Echmont Empire. Expecting little from her new life, the reality she faces is even bleaker; not only is her new husband distrustful of her, but Adelheid must also contend with the jealousy of his concubine Diane. Thus begins Adelheid’s journey to gain allies in court, while also using her hidden mage powers to combat a rising threat…
(Source: WEBTOONS)
Note: Chapter count includes 13 side stories.