After the Broken Engagement, I Became the Crown Uncle's Beloved

The Second Young Lady of the Prime Minister's Estate, Margaret, gave everything for Crown Prince Christopher—when he was crippled, she took the place of her runaway younger sister Stella as his betrothed, stayed by his side, and personally tested medicines on herself, helping him stand again and ascend to the position of Crown Prince. However, after Stella returned, the Crown Prince became convinced that Margaret was the "vicious" one and favored Stella in every way. Heartbroken and despairing, Margaret threw herself off a cliff, only for her body to be inhabited by the soul of a modern-day medical student who had transmigrated into this world. The reborn Margaret possesses extraordinary medical skills and a portable storage space. She decisively dissolves her engagement with the Crown Prince and reveals her astonishing medical expertise, catching the attention of Duke Theodore, who is afflicted with a rare and deadly poison. She performs acupuncture to cure his poison, and as they spend time together, feelings gradually blossom between them. Through countless trials and hardships, they support and stand by each other, never wavering. In the end, Margaret completely breaks free from the shackles of her family and stands shoulder to shoulder with Theodore to protect the common people.