ONI NO HANAYOME VOL.1-12 END

STORY : 

Lady Carolina, the overlooked daughter of a powerful duke, has always believed herself to be the black sheep amid her illustrious kin. Her father is the distinguished prime minister; her elder sister, a prodigious mage destined to become their nation's next Saint. In comparison, Carolina resigns herself to a quiet existence in their shadows until a sudden and unexpected royal decree alters her destiny, thrusting her into a political marriage with the formidable "Bloodthirsty Prince" of the neighboring Empire of Malcosias. Determined to prove her worth, Carolina takes a bold step into a world fraught with both political and mortal peril. As royal obligations intertwine with hints of true love and the stirrings of her own latent power, Carolina moves ever closer to understanding what it truly means to be exceptional.

桑切斯公爵家有一对优秀的姐妹。姐姐芙萝拉是才色兼备的圣女候补。妹妹卡洛琳娜则是平凡无奇、毫无才能的废物。卡洛琳娜每天都在与优秀的姐姐比较中，怀着自卑感度日。
某天，为了调整与邻国的关系，一份与第二皇子的婚约送到了卡罗莉娜面前。然而，这位皇子却是传闻中“野蛮”且“残酷无比”的人物。
“若能派上用场的话——”卡罗莉娜为了守护国家而接受了这桩政治婚姻，但这一决断却彻底改变了她的人生。
与传闻相反，她在绅士风度的皇子以及新的家人那里得到了正当的评价，并逐渐开始认可自己。而且，她还发现自己体内蕴含着不可思议的力量。
另一方面，留在王国的芙萝拉却状况不断。
这是一个废物千金与笨拙的皇子抓住幸福的爱情故事。