One day, when she was ten, Lucy, who lived in an orphanage, was adopted by a gentleman claiming to be a relative on her deceased mother's side.

As the adopted daughter of a ducal family, she lived with her kind uncle and servants, receiving an education befitting a lady.

Five years passed as she diligently acquired refinement.

When she turned fifteen, she met her stepbrother, who had come from the family estate, for the first time.

"I won't acknowledge you as my sister!"

Lucy, on receiving this shout from the handsome boy, becomes utterly captivated by her stepbrother's divine beauty and cold demeanor.

"To repay my gratitude, I will become a valuable pawn in a political marriage!"

Lucy, making her debut in high society, quickly becomes renowned as the ideal young lady. Meanwhile, her tsundere stepbrother, unable to be honest with his feelings, finds his affections for his stepsister becoming complicated.

This is a comedy about how these two, constantly at odds, eventually come to live a lovey-dovey life together.

※Book currently on sale from Fairykiss.

※While the content here differs from the published book, it has been confirmed that the Narou version can remain online as is.

〇The title has been changed for the book publication.