Ellis Lars is the very picture of an ordinary noble lady.
Her grades? Decent. Her personality? Mild. Her family’s rank? Respectable, but nothing special.

If there’s one unusual thing about her, it’s this: her household staff—an unnerving mix of genius twins, a terrifyingly loyal butler, and more—are impossibly competent and utterly devoted to her.

So when the Crown Prince tries to recruit them into his service, he ends up witnessing a side of Ellis that’s anything but ordinary. As rumors stir and the elite begin to take notice, the truth becomes clear: beneath her calm surface lies a young woman who commands absolute loyalty—and maybe something even more powerful.

What is the true identity of the “ordinary” marquis’ daughter who inspires fierce devotion—even from a so-called mad dog butler?