Explore the captivating narrative of 'どこの馬の骨とも知れない素性のわからない悪役令嬢、実はとある方のご息女だった！？', a Japanese web novel that uncovers the identity of a seemingly unknown villainess. Discover the protagonist's journey as the adopted daughter of a duke whose broken engagement leads her on a quest to unravel the mystery of her true father. With a blend of drama, fantasy, and romance, this story immerses readers in a world filled with demons, arranged marriages, and strong female characters amidst an enchanting European setting. Delve into themes of heritage, love, and self-discovery in this oneshot novel that promises an engaging exploration of villainess noble girls.