Fictions in which the male and female protagonists shared bodies were often referred to as " body swap " or " soul swap ". This was one of the most popular online literature forms in recent years. The plot of this kind of novel usually revolved around the emotional entanglement between the two protagonists. They usually met under some unexpected circumstances and decided to share a body for some reason. This kind of plot often involved issues such as gender, identity, and morality, which might cause readers to think and discuss. Common novel plots in which the male and female protagonists shared bodies included, but were not limited to: The two male leads meet in an accident and decide to share a body. However, as time goes by, the emotional entanglement between them gradually deepens. It involves ethical and moral issues and may even cause public opinion's attention and controversy. For some reason, the male and female protagonists were forced to share the same body. Their relationship changed from strangers to partners who depended on each other. At the same time, they also faced various restrictions and challenges brought by their bodies and identities. The male and female protagonists originally came from different worlds, but under some unexpected circumstances, they were involved in the same world and shared the same body. Their feelings and relationships gradually warmed up with the physical contact, and they also faced various ethical and moral problems. A novel in which the male and female protagonists share the same body has profound emotional implications and ethical considerations. It may arouse the readers 'resonance and thinking, but at the same time, they need to pay attention to the limitations and challenges brought by the body and identity, as well as possible social public opinion and controversy.