Doomsday Berserker

In a world invaded by monsters, terrifying creatures threaten humanity's safety at every turn.

No one could have imagined that humanity's hope would begin with a school bully who was still under eighteen.

Five years later, the parents who had gone to complain to that bully each publicly took credit on their social media accounts:

“If we hadn't gone to complain to Old Lu that day, prompting Lu Qianxing to join the army, how could the world have become peaceful so quickly?”