The Wronged Prisoner Princess

Yara Sullivan, framed by Legitimate Elder Sister, sold to brothel. Drugged, she and Second Prince Xie Wuwang spent a night. Yara imprisoned, gave birth to son. Child picked up by Xie Wuwang, bore royal birthmark, confirming lineage. Released, Yara met Xie Wuwang. Child calmed when held by her. Legitimate Elder Sister falsified Yara's birth date. Truth came to light, they recognized each other. Xie Wuwang became Crown Prince, Yara Crown Princess Consort.