Royal Daughter-In-Law

She was the daughter of Kefu who no one wanted to marry, but she happened to meet the seventh prince! He was not afraid of her and took her as his concubine. Grandma, even though the family she married before was not as noble as the prince, she was still a wife. How could she have been a concubine? No, being a concubine is not what she wants, and being a royal daughter-in-law is not what she wants. She wants to force him to divorce the concubine, and she wants to be free!