KISAKI Kiyoshi

As her sick father's last wish, Emilia, the eldest daughter of the Bradley Marquis family, reluctantly accepts her arranged marriage to Mathias, the eldest son of the Karen Border Lord. This is because he has sworn not to cause chaos among the people of the territory due to the lord's death. However, her husband-to-be, Mathias, is unable to attend the wedding due to border defences. As a result, Emilia has a marriage ceremony with Mathias' representative and travels to Vanrosia, her husband's territory. Although it is an unwanted marriage, Emilia is the mistress who will look after her husband's kingdoom while he is away. So when she takes her husband's place and actively promotes the reform of the territory, the change is unexpectedly successful and she spends her days fulfilled. One day, however, her husband, whom she has never seen, finally returns. He has a vow in his heart that Emilia never expected... What will become of their relationship? Original Webtoon: Piccoma, Mecha Comic

Leonie Merdin, the daughter of a marquis, entered into a political marriage at the age of ten. By eighteen, she was supposed to officially unite with her husband, Cassius, and live happily ever after… or so she thought. Instead, Cassius publicly confesses his infidelity—claiming that the dazzling socialite Primrose is carrying his child. Heartbroken, Leonie decides to file for divorce, but her father refuses to allow it. Just as she finds herself cornered, Charles Claudia, known as the Duke of Ice and coincidentally Primrose’s former fiancé, approaches her with a surprising proposal—marriage. A story of betrayal, dignity, and unexpected romance begins, as two wounded hearts join forces in a society of schemes and secrets.

Since she was just a child, Lydia was determined as the daughter of a Marquis to do everything in her power to support the royal family. However, everything seems to be changing before her very eyes as her fiance Rogerio begins showing romantic interest in a lowly noble aide to the princess. While ignoring their duties, the two seem to be getting awfully familiar… and yet Lydia seems to only be treated as an antagonist when confronting the situation. Feeling betrayed, her manners and patience have reached their limit…! Source: MangaPlaza