Orphan from the Far East: I Heard That I Have a Bad Reputation

In the far east there is an ancient empire that has long been lost in history. The people there believe in dragons rather than beast gods. They do not mix animal blood and remain pure-blooded humans. As a result, they are recognized by the European continent as a race "not favored by gods". One morning, a girl from the Far East came to the mansion. She claimed to be the daughter of the Duke's old lover. Who is she? What is the purpose of setting foot on thousands of mountains and rivers...