The female protagonist of a modern romance novel is best to be a killer or an agent, and the male protagonist has multiple identities.

In modern romance novels, the female protagonist is best to be an assassin or an agent. The plot of the male protagonist with multiple identities is more common. It usually involves elements such as power struggle, agent missions, love and revenge. The female protagonist could be a woman with special abilities such as martial arts, wisdom, agility, etc. The male protagonist could be a special agent, spy, or an elite in other fields with multiple identities. Their love was usually mutual support and dependence between missions. This kind of plot usually involved complicated relationships and contradictions. It required the reader to have a certain reading ability and logical thinking ability to understand the plot and character relationships well. At the same time, this kind of novel was also easy to attract the interest of readers because it contained a lot of suspense and excitement.