I Became The Emperor's Daughter One Day

After a car accident, a woman crosses into a magical world and is reincarnated as a baby. She wins a competition and is adopted by the emperor, becoming a princess. While the other adopted princesses receive luxurious treatment, she is made to live in a small woodshed and is beaten and bullied by them. Determined to fight back, she shows a brave spirit that catches the attention of the cold-blooded emperor, who finds the little girl interesting.