The story of a brother and sister romance usually refers to a love story where the male and female protagonists have a large age difference. Generally, the male protagonist is older than the female protagonist, or the female protagonist is older than the male protagonist. This kind of love relationship often appears in literature because it often attracts the attention of readers and can also show love stories of different ages. The story plots of brother-sister romance novels were different, but they usually involved love, kinship, friendship, and so on. The protagonists might face various challenges, such as differences in perception due to age differences, differences in life experiences, and so on. But whether they could come together in the end depended on their efforts and mutual understanding. In a brother-sister romance novel, there would usually be a strong mother or father who might have a negative impact on the protagonist's love relationship, but they might also provide support and help for the protagonist's love path. A love story between a brother and sister is a love story that is full of imagination and mystery. It can attract the attention of readers and show the emotional communication and interaction between people of different ages.