Serial Killer in Cultivation World

Ludwig had a common childhood, besides the fact that he had built unusual amounts of resentments towards his family. They had treated him with much hate, especially in his later years, so much that his resentment exploded and he had decided to do something absolutely unforgiveable. With this as a start, he studied and came closer to those that felt the same as he did, he repeated it and trained in this until it became a professional hobby, making him proud of himself to a part. He truly enjoyed his hobby while his life bore fruits, as he married and got children, learning from his mistakes of his parents, the child grew up in a loving home. As he came at the end of his life, still not caught or even suspected, he saw the past years in a way that gave him many happy thoughts. His soul left his body, and he lost all feelings towards the world. At that moment, something surprising happened, which shook his whole soul.