On a gloomy day, on a dull street, a child knelt in front of a pool of blood. The rain fell on him drop by drop, and the water dripping down his face was unclear whether it was rain or tears. Why? Why did the doctor say that the parents were hopeless, even though they were still alive before? Why? Why did they not believe what he said, causing his parents to miss the best rescue time and really leave him forever? He hated the police. His parents obviously did not violate traffic rules, but the gray van from the opposite direction hit him. He hates doctors. Why are his parents said to be dead when they are obviously still alive? He hated the whole world. Everyone knew that this could not be just an ordinary car accident, but no one stood up to expose this lie. So, he picked up the knife, he picked up the gun, and became the feared number one killer in Asia... He hated the world, until one day, he met him, and he seemed to have returned to the warmest time when he was a child, and he seemed to have become that simple and innocent child again. One day, he asked himself if he still hated the world? I don't hate it anymore… What about the previous agreement? Will not forget. But, I'm sorry, I may not be able to do it. He was so grateful for the choice he made, otherwise he might have continued to kill like this for the rest of his life.