The 'we' could refer to a group of friends. For example, when a bunch of friends get together and share their adventures, they are the 'we' who tell the story.
The 'we' could also be professional writers. They often collaborate on writing love stories for various reasons. Maybe they are writing for a specific anthology or a popular romance series. Professional writers might bring different skills and perspectives to the table when writing a love story together.
The 'we' in the title likely refers to the group of people whose story is being told. It could be a family, a community, or a group of individuals who had a shared experience.
Maybe 'we' are some characters in a fictional world. They could be time - travelers who visited the age of dinosaurs and are now coming back to their normal time and place to talk to Elsa about their adventure. So, 'we' are those time - traveling adventurers.
The murderer was Shangguan Qi. In the novel The Year We Disappeared, Shangguan Qi poisoned and killed five of her roommates because of school violence. However, after she was released from prison, she was poisoned to death in the rented house where she lived alone. Meng Linglong's DNA was found at the crime scene, and Meng Linglong was one of the five young girls killed by Shangguan Qi back then. Therefore, according to the information provided, Shangguan Qi was the murderer in 'The Year We Disappeared'.