No More Nice Sis

When Yiren catches her fiancé and her crafty sister Rielle kissing, something in her snaps. She decides she must get married in order to escape her family. Yiren happens to learn that the icy, aloof Noel Cristan is looking for a bride in order to inherit his father's title of archduke. They agree to an arranged marriage to get what they both want, but it turns out Noel isn't the only one after his father's title. With all the family drama and intrigue, will Noel's family be any safer for Yiren?