I Am an Eternal Monster

The protagonist, Jiang Tianwang, was teased by martial arts monks because his talent was too evil and his talent test tablet was too low-level to detect. As a result, he met a wise man, who turned out to be a remnant soul from tens of thousands of years ago. As a result, this remnant soul wanted to take over his body and be reborn. King Jiang Tian rose up to resist, but because of his special martial soul, he defeated this remnant soul. By devouring this remnant soul, he gained a large amount of memories and obtained the inheritance equivalent to a dynasty. From then on, King Jiang Tian established his own power and competed in the world. After going through various difficulties, he finally unified the world. A hundred years later, he had many children, each of whom established multiple kingdoms, and the world entered an era of multi-national war. In the end, the protagonist couldn't bear the trouble and didn't want to deal with these mundane things. Finally, he went to another realm and everything started from scratch again...