The End of the World: Total Corpse Control

[Villain + system + no cp + no virgin + decisive killing] The end is coming, morality is lost, and the world has fallen. Zhou Yuan, who traveled through time, successfully integrated the source of the epidemic, A new doomsday king will rise in the wasteland "When fighting monsters, you should be careful not to become a monster, and when you stare into the abyss, the abyss also stares into you." "Welcome to the end of the world!"