Family, I Still Have an Ancestor

Traveling through fantasy, you accidentally become an ancestor of a generation. The system is frightened and runs away automatically. After loading for ten thousand years, you absorb the origin of the ten thousand year strong. The ancestors and grandsons work together to go to various aristocratic families. They dig graves and dump corpses in holy places. It becomes a nightmare in the forbidden areas of each aristocratic family. Let's see how the protagonist becomes a nightmare for the world. Everything is in it. Let's see how the protagonist kills everyone in this world. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.