The Revenge of the Duke's Daughter Theresia

Queen Kristina was framed by her half-sister and thereby executed at the tender age of 16.
16 years later, amidst the festivities in honour of the Queen’s birthday, a young girl is awash with nostalgia. Theresia, the daughter of a duke.
Her butler whispers in her ear: "How long do you intend to have me protect you?"
This young girl is none other than the former Queen, her reincarnation made possible after striking a deal with the alluring demon before her!
The curtain rises on a noble lady and a demon as they set out on a quest for vengeance!