Old Dreams in Ember Palace: from Corpse to Throne

Oona Langsius is the eldest daughter of Duke Langsius. She has two brothers. She has been favored since she was a child and has lived under the protection of her family. When she was young, at a noble gathering in the palace, she went to the rose bush in the back garden of the palace for fun and became the least favored. The little prince Clement was the child of the old king and his maid. The maid was secretly executed, while he was raised by his concubine. She was so moved by his sweet words that she did not hesitate to waste the entire family's financial resources and troops to support him in winning the throne. She killed his royal brothers for him, and her hands were soaked with royal blood. She also married him as she wished and became the queen who held half of the country's military power. However, five years after her marriage, her family was brutally attacked by assassins... In middle age, she had her throat cut by her own son, and she didn't know the truth until the moment her blood gushed out... Because she was unwilling to die like this, she made a deal with God. She became the second daughter of a certain duke's family and wanted to complete her revenge plan... "Now that I can make you the king, I can also pull you down with my own hands."