His Forgotten Princess

After marrying the Regent King, he brought his stepsister home, demoting me to concubine and making her his principal wife. On their wedding night, he came to my room with a knife, coaxing, 'Cecilia needs nourishment from your Heart's Blood of a Woman of Pure Yin. It won't hurt.' I nodded. The pain caused a seven-day coma. I woke up, smashed everything, and told them to get out. The bloodletting affected my mind; I had forgotten everything, including him.