Mujikaku Seijo wa Kyou mo Muishiki ni Chikara wo Tare Nagasu

Lady Carolina has always felt like the black sheep in her illustrious family. While her father serves as prime minister and her older sister is a magical prodigy destined to be the next Saint, Carolina believes she has nothing special to offer. Resigned to a life in their shadows, her world is upended by a royal decree forcing her into a political marriage with the formidable "Bloodthirsty Prince" of a neighboring empire. Determined to prove her worth, Carolina steps into a treacherous new life of court intrigue and mortal peril, where she may discover not only the stirrings of true love but also a powerful, latent ability she never knew she possessed.