Strong sense of conflict: "Earth" usually represents life and home, while "Purgatory" represents despair and pain. This huge contrast breaks out in just a few words, immediately grabbing the reader's attention and making people question: Why? What happened?
Strong sense of imagery and impact: The word "purgatory" carries with it visual associations of the end of the world, struggle, and pain, instantly constructing an oppressive worldview and allowing specific and disturbing images to emerge in readers' minds.
Create suspense and curiosity: The introduction does not give any explanation, just throws out a result. Readers will immediately want to know: Who came to Earth? Why purgatory? What does purgatory mean? Is it a physical purgatory or a spiritual purgatory? This unsolved mystery strongly stimulates readers' desire to explore.
Concise, powerful, and straight to the point: There is no redundant description, and every word accurately conveys the tone and core dilemma of the story. It tells the reader directly that this will be a story about survival, struggle and great challenges.
Sense of immersion: "Coming to Earth is already purgatory" seems to be the protagonist's inner monologue or fate judgment, allowing readers to unconsciously immerse themselves in this desperate situation.