A brief description of the Lucia (Taruvi) manga:
Lucia was growing up without knowing what she was. She’s a princess. After her mother died, the girl enters the palace and sees the future in her dreams. In a dream, she turns nineteen and is sold at an auction to a man with a rich dowry. After that, her life became miserable. She woke up determined to change the future, because she has a lot of time until that terrible time.