Kyuuketsu Ouji to Ikenie Hanayome

In the aristocratic family of An, Meirin is born into a life of privilege, but her world is turned upside down when her parents pass away, leaving her vulnerable to the machinations of a branch family that has taken over her household. Her ailing younger brother is used as leverage to ensure her compliance, and the branch family's daughter, Shuusetsu, is placed in Meirin's position, securing an engagement to the Third Prince, Tenga Rokuou. However, as Meirin's fate becomes increasingly entwined with Tenga's, she discovers a shocking truth: the prince's true identity is that of a despised and feared vampire. As Meirin navigates the complexities of her new circumstances, she finds herself drawn to the complicated vampire, who harbors secrets of his own. Against the backdrop of a royal court, Meirin's life is forever changed by the contract marriage that binds her to the enigmatic Tenga.