The Demon Kneels to Her

In modern New York high society, there are four major families that rely on blood contracts to maintain their power. The female protagonist, Mara, is actually the only daughter of the first Witch Queen, Helen. Since childhood, she has been raised as a lowly adopted daughter by the Vail couple. Her mother's obsidian inheritance necklace was stolen by her stepsister, Celeste, and for twenty years, her royal blood was sealed. On the night when the Vail family renewed their betrothal blood contract with the Blackwood family, the entire family, in an attempt to preserve their stolen wealth and inheritance rights, tied Mara to an underground altar for sacrifice, hoping to use her lifeblood to complete a life substitution ritual. Everyone summoned the Demon King, Kyle, expecting him to devour Mara, but Kyle recognized her royal blood and knelt on one knee in submission in public. Mara awakened her bloodline, holding the Red Contract ledger that records the sins of all the noble families, and was able to see through the hidden costs of the contracts. Step by step, she fought back: exposing Celeste's stolen identity, reclaiming her engagement and her mother's inheritance, and uncovering the mastermind, Silas - the council leader who had murdered her mother, sealed Kyle, and manipulated the four major families. Mara united with those at the bottom who were oppressed by the contracts, and one by one, she settled the blood debts of each family in the courtroom. Silas tried to seize power