The male lead, **Cezar Aster**, head of the Aster family, bears a "Blood-Binding Curse" inflicted by a traitor within his clan: anyone not bound to him by a specific blood-fate suffers excruciating, bone-corroding agony upon touching him; only the person sharing his fated bloodline is immune to the curse's effects. On a winter night three years ago, Cezar was ambushed and gravely wounded by a traitor. While fleeing through an alley in the Old District, he was on the verge of death from blood loss. **Isolde Heller**, an intern nurse passing by after her shift, intervened to save him; she donated her own blood to sustain his life, and in a state of delirium, the two shared an intimate encounter. When Isolde awoke, the man had vanished, leaving behind only a dark-patterned metal emblem belonging to the Aster family. Isolde unexpectedly became pregnant. Her family, obsessed with their reputation, pressured her to abort the child; she adamantly refused, resulting in her being cut off financially and cast out of the home. After giving birth to her son, **Elias**, she struggled to make ends meet on her own. She eventually saw a job posting from the Aster family offering an astronomical salary for a nanny to care for Mishu—an orphan relative of the clan—with room and board included. To support Elias, Isolde concealed her history of childbirth, successfully secured the position, and stepped into the heavily guarded Aster Manor. Key Highlights: The nanny turns out to be the only person capable of breaking the curse afflicting the head of this vampire-like family! Themes include crushing class disparity, the agonizing pull of maternal love, and a reversal of the curse's power dynamic; the heroine asserts her dignity to break the status quo, refusing to be a mere appendage and instead winning an equal, fated relationship through her own free will. Core Synopsis: A flashback to that harrowing night in the alley three years ago. Isolde, cast out by her family and raising her son Elias alone, finds herself suffocated by the crushing pressures of life. Her close friend Claire kept an eye out for job opportunities for her; Isola spotted a listing from the Astor Estate seeking a nanny for the family’s orphaned child, Mishu—a position offering a salary high enough to support Elias. Determined, she submitted her application while concealing her history of childbirth and traveled to the heavily guarded Astor Estate to participate in the selection process. Rumors circulated that the estate's master, Sezer, bore a sinister curse that caused ordinary people to suffer inexplicable injuries whenever they drew near him. In the selection hall, Isola caught her first distant glimpse of Sezer—who exuded an icy, imposing aura—and felt an inexplicable sense of unease.
