The Grand Duke’S Little Lady summary:

“This bit*h is not my daughter.” Ariel was born in the Marquis family but she was abused and abandoned by them. She ended up a miserable death filled with endless misfortune. When she woke up, she was nine years old again. In order to not repeat the miserable life, Ariel decides to have a contractual marriage with the son of the grand duke, Lakatyer, who is famous for blood and madness. “Good, Ariel. Now you are the Lady of this house.”The Grand Duke's Little Lady