In a diary-style novel, the female lead calls the male lead uncle

Answer 1

Okay, I understand the plot. Here is my answer:

Diary-style novels could have different female protagonists, depending on the author's settings. In this plot, the male lead's uncle may be an important character, so the author may give him a special name to highlight his status and importance. At the beginning of the novel, the female protagonist might mention the name of the male protagonist's uncle and record some of his characteristics and behaviors in the diary to attract the reader's interest. If you want to know more about the plot and character setting of this novel, please feel free to tell me.