For centuries, the underworld of earth's society has been ruled by a powerful families, one of them, the most notable, the Nocturne family (Your family), stood on top for its immense power and influence. After many years of failures, the Nocturne family has accumulated debts to various other houses and families in the underworld. You are considered collateral and being sent to the biggest house with the most influence and power that your family has a debt to, Lucian's.