Duan Xi was an assassin in his past life, and he is one in this life too. He's a diligent, decent assassin who earns money and has no weird habits or psychological problems. He just has a weak presence and is a stubborn, poker-faced guy who's all too quick to give up. [His presence is about on par with the Seventh Phantom.] Three lifetimes, and still no success. The little assassin keeps asking himself one question: Why do I exist? Why? Even the author doesn't know. But in this new world, surely someone will tell him the answer. At least, that's the hope. Simply put, this is a story about a low-profile assassin who transmigrates into a world of wuxia heroes.