Kyuujo Ewha - Outei Denka ga Aishita Haru Arashi no Musume

When she was a child, she was taken away from her parents' house by a noble family. When she comes of age, she is almost sold to a brothel by her parents-in-law. When she learns that she is the daughter of a prestigious noble family, she decides to escape her parents-in-law and find her real parents. As she flees, she asks for help from Junggwang, a royal brother and prince who had escaped from the court. He promises that he will find her parents, but.....