Stone Age Zerg Invasion

[Survival at the end of the world + protagonist not saving the world + not being a virgin + decisive killing + egoism + group portrait + no brothers + race war + non-single female protagonist + superpowers] (It is not the traditional Terra or interstellar Zerg. The protagonist will not have a subordinate, a little brother, and will not join the official team. Even if there is a little brother, the little brother will not survive more than a few chapters, it is just a consumable) The Zerg invades and the end comes. They extinguished the flames and scrapped the metal. Human civilization is sliding back to the Stone Age. Li Ming has never been a good person. He doesn't want to save this world on the verge of destruction. He just wants to live well with her. Everything that stands in the way, be it insects or humans, will be wiped out.