Condemned to a reverse harem narrative as a disposable extra, I unexpectedly become something far darker—the serpent-queen foretold to shatter the empire. A peasant elevated only by my mother's position as nanny to nobility, I assume a quiet fate until her death mirrors the realm's descent into chaos. The noblemen she served transform into captors, sealing me with the Duke's children in the mansion's hidden depths for 700 merciless days. Our confinement vanishes from the story itself, leaving only cunning and desperation as tools for survival. There, among fellow young villains stripped of agency, I discover an unexpected truth: darkness shared becomes family, and captive children become the empire's most dangerous force.