(The group portrait story is all about the protagonist. The female protagonist Yun Zhimeng is bisexual. She had a crush on her best friend before she fell in love with the male protagonist)
Yun Zhimeng lived in the countryside with her grandmother since she was a child until she was 18 years old. Her grandma asked her to enroll in the police academy, and she followed her grandma's arrangement and went to school in City A. Before leaving, she wanted to take her grandma with her, but her grandma said, "We'll see each other when it's time to meet." So she went to City A with her neighbor Su Jiyue, and they didn't return to Lingxi Town until they graduated.
Concept: The most terrifying thing is never murder, but is hidden among the people we pass by inadvertently.