The Plump Concubine's Royal Gambit

Clarice Leighton transmigrates, becoming Lady Leighton, mother to the First Prince. Both mother and son are despised for their obesity, leading to their tragic deaths. To reverse their fate, Clarice starts a weight-loss journey with her son. Using an "Interdimensional Omni-Mall," she thwarts Noble Consort Lilith Vaughn. She saves the emperor, winning the emperor's affection. She rejects the emperor and leaves the palace. The emperor abdicates to chase after her.