Survive as the Adopted Daughter of a Genius Duke

From a diligent graduate student praising her professor, I’ve been reborn into a world where my survival hinges on flattering a different kind of genius: my adopted younger brother, Kilian. As Reina, an adopted daughter in a powerful Duke’s household, I know a terrifying truth: this charming boy is the male lead of a novel, and in the original timeline, he’s destined to eliminate me. My only hope? To win over the young Kilian before the novel’s dark plot unfolds. Armed with snacks, endless praise, and a lifetime of people-pleasing skills, I’ve dedicated myself to becoming his indispensable older sister. But my efforts might have been *too* successful. One day, the adorable, chubby child I’d been doting on looked up at me with startling intensity and declared, ‘Sister, you have to marry me too.’ I dismissed it as a childish fancy, until a deep, resonant voice shattered my complacency: ‘You’ve never been my sister. If anything, you’re a woman to me.’ When did he grow up so much? And when did his affection turn into such a fierce, possessive obsession? Now, I’m caught in a desperate game of cat and mouse. While I plot my escape from his increasingly suffocating devotion, Kilian, the genius Duke-to-be, sees only one future: one where I am irrevocably his. Can Reina outwit her obsessive ‘brother’ and survive, or will she be trapped by a love she never intended to cultivate? Find out in Chapter 1!