Since I don't have detailed knowledge about this 'love in fallen city novel', it's hard to say exactly. However, in a novel with such a title, we might expect to find characters like a young, idealistic protagonist who falls in love and is affected by the state of the fallen city. There could also be an older, wiser character who provides some perspective on the situation.
In 'Love in a Fallen City', Liusu is a main character. She is a complex woman dealing with love and survival in a challenging time.
The main characters usually include a female protagonist and a male character. Their relationship forms the core of the story.
The main characters include Clary, a young Shadowhunter with special abilities. Jace is also a key character, a skilled Shadowhunter. There's Simon, who is Clary's friend and has his own unique situation in this supernatural world.
I'm not entirely sure without more specific information about the novels. But typically, in such a story, there could be a hero - perhaps a young person with special abilities. There might also be a villain, someone who wants to cause chaos in the 'City of Fallen Angels'. And there would likely be supporting characters, like friends or mentors of the hero.
I don't know for sure as I haven't read it. But it could be some of the characters from the main 'City of Fallen Angels' story, like the angels or the humans living in the city.
One main theme could be love and its complexity. In a fallen city, love might be a glimmer of hope or a source of despair. Another theme could be the decay of society which serves as the backdrop and influences the relationships in the novel.
Love in a Fallen City was one of Zhang Ailing's most popular short stories. It was a work that explored how love, marriage, and human nature survived and struggled before and after the war. The story took place in Hong Kong. It was about the Bai family's young lady, Bai Liusu, who came from Shanghai. After a failed marriage, she was penniless and ridiculed by her relatives. She met Fan Liuyuan, a rich bachelor by chance. In order to fight for a legal marriage status, she used herself as a bet and went to Hong Kong to fight with Fan Liuyuan at Repulse Bay Hotel. However, when Fan Liuyuan was about to leave Hong Kong, the Japanese army began to bomb Repulse Bay, and Fan Liuyuan returned to protect the white tassel. This life-and-death experience had tied them down. In the end, they decided to go through hardships together and become husband and wife. " Love in a Fallen City " was a novel with a love story in the context of war. It depicted the struggle and survival of human nature in a difficult situation.
The main characters include Clary Fray, a young Shadowhunter; Jace Wayland, her love interest; Simon Lewis, Clary's friend who is a vampire; and Alec and Isabelle Lightwood, who are also Shadowhunters.
There could be mortals in the story as well. They might play important roles, perhaps as the ones who witness the fall of the god. They could be the ones who help the fallen god in its journey of redemption or they could be the ones who are affected by the god's fall and are trying to deal with the consequences. Maybe there are some other supernatural beings like angels or demons that are involved in the plot.
I'm not sure specifically as it depends on the novel. But it could be the fallen angels themselves. There might be a lead fallen angel who drives the story forward.