K-Eldest Daughter Possessed a Childcare Novel

I possessed a childcare novel, in a rather absurd role. ‘The eldest son who resembles the cool-headed duke of the north… is a girl?’ In the original work, he was the duke’s eldest son and heir who adopted the female protagonist, gruff to everyone but affectionate to her as the eldest brother. And now, that was who I had become! “Since Belladi is the elder sister, you should be accommodating, right?” Even our parents raised my younger brother and me differently. “As the heir, I command you, behave and don’t do anything!” My novel counterpart’s brother was ignoring me completely. … well, who cared about being a son or daughter? First, let’s discipline this disrespectful little brother. ...