Vivian was the legitimate daughter of Duke Redgrave, cherished by her three brothers. But a false accusation orchestrated by a foster sister led to her death. Reborn, she awakened a mysterious space. At her Coming-of-Age Ceremony, she cut her robes, disowned her family, and petitioned the emperor with her mother's keepsake to become a nun. Instead, she was appointed as the Blessed Saint. Later, she met the Regent and studied medicine and poisons, repeatedly outwitting her treacherous relatives. As the Regent and she grew closer, a bond began to form. By then, her brothers had finally discovered the foster sister's true nature—but their regret came too late.
