Sweet romance + devoted couple + marriage first, love later + transmigration + rebirth. After their parents’ secret affair drove them apart, the male and female leads gradually fell for each other despite the taboo between them. Unfortunately, they were both married. He was willing to divorce and become her lover. The heroine was set up and died in a car accident. Heartbroken, he killed himself to join her. At the moment of his death, he transmigrated as a baby, retaining the memories of his previous life. Thinking he had been reborn into another life, he resolved to work hard, ascend the throne, and wait for the heroine to appear. The heroine, a medical student just starting her second year of college, had not yet met the male lead when she transmigrated into the body of a princess who had fallen gravely ill and died at fifteen. With her homeland beset by internal and external threats, the princess sought help by agreeing to a political marriage. But before she could even arrive, a new emperor took the throne. With no way back, she could only stake everything on winning the compassion of a powerful minister and becoming a member of his household. She thought she was in control, never realizing it was all part of his scheme. A transmigrated heroine and a reborn male lead known as the Living Yama. One-on-one romance. Who will have the last laugh? A powerful alliance through marriage, love after marriage, a long road to winning his wife back, a plan laid long ago, healing through love, and mutual devotion.