All Hail Cousin Brother Novel

Yu Youyao's nightmare reveals a horrifying future: marriage to Song Mingzhao, the Marquis' son, only to become a "medicine-human" for her third sister, Yu Jianjia. After three years of sacrificing her heart's blood, Yu Youyao faces a violent end, her wrist slit. Waking in terror, Yu Youyao resolves to avert this fate. She immediately pledges herself to her visiting maternal cousin from the You Kingdom, Zhou Linghuai. Moved by her plea and her appearance, the usually ruthless Zhou Linghuai agrees to protect her. He becomes her steadfast guardian, aiding her in seeking revenge, defending against schemes, rejecting suitors, and ultimately achieving prosperity. As Yu Youyao matures, her dream's trajectory begins to manifest. Song Mingzhao reappears, seeking her hand in marriage. However, Zhou Linghuai intervenes, asserting his claim over Yu Youyao, declaring she belongs to him and cannot marry anyone else.