Substitute Daughter: Accidentally Provoking a Mad-Descent Plutocrat

The Story

Ella steps into the life of a missing heiress to secure a medical miracle for her critically injured brother. She becomes engaged to the fifth young master of a powerful chaebol family, yet her existence draws the immediate attention of Theodore, the second master known as the family's madman. Under his relentless probing and pressure, Ella navigates the dangerous waters of her new role. The impostor game reveals a shocking conspiracy that threatens to overthrow the entire chaebol empire.