The protagonist, a second-year student at Public Security University who was shot by a human trafficker three minutes before the story begins. After losing consciousness, she was contacted by the Good and Evil Detection System and woke up in an unfamiliar body in a different place. She is a prospective member of the People's Police from a family of police officers. She carries a camera and a fruit knife, has excellent eyesight, and has a translucent screen in her vision showing a countdown timer of her remaining lifespan. She is determined to catch the murderer of the two young girls.
