And the castle in addition

I never thought that on New Year"s Eve the castle might go to me. And not just a castle overgrown with dirt and dust, but a damned residence of a marquise that from midnight lives his life until dawn. The residence where the ladies dance at the balls, and the gentlemen crave to get not only a hand, but also someone’s heart - sometimes even in the literal sense, because they are the real icy dragons.
Murders, theft, duels, secrets and intrigues. This castle is teeming with riddles, which I now simply have to solve. Who am I? Let me introduce myself. Valeria Koroleva is the granddaughter of a hereditary witch and a girl, to whom, together with the castle, a curse has passed into the inheritance. A curse that prohibits love