In the future world, people can assassinate anyone through a certain software. As long as you have enough virtual coins, of course your enemies can also assassinate you. In the future, assassination will be like "ordering takeout" now. You can control the life and death of others by lightly touching the screen of your mobile phone. Of course, in this "industry", someone will always do better than you. Most of the top killers around the world were soldiers in the past, so the rich have set up rankings. The higher the top, the stronger the ability. The gold coins paid are very expensive. They use money to do things, never sloppily, and can even kill people invisible. They hide in the crowd and come and go without a trace. The most mysterious legend is the mysterious old A and Mr. Q. They are regarded as god-like snipers in the killing world. As for who of the two is better at killing, no one knows.