Beat up the Gangster

Ten years ago, a sudden catastrophe swept across the originally prosperous Aquamarine Star. Countless monsters, demons and mythical creatures appeared in the world. The fighter planes flying in the sky were torn apart by the demons that blocked the sky, the powerful tanks were swallowed up by the endless tide of demons and beasts, and the 10,000-ton warships in the sea were easily sunk by the mythical creatures that appeared in the sea. In the midst of endless killing, the global population has plummeted from a peak of 7.5 Billion to a mere 700 million in just ten years, with no one left in ten. The surviving humans, while fighting against demons for ten years, accidentally discovered many relics that transcended human history, and unearthed the methods and inheritance of human cultivation from the relics. Yun Xiao was also one of the only remaining human leaders. He died in another battle with demons, but he did not expect that he would go back to 20 years ago, when Yun Xiao was still in high school. And the first thing he faced after his rebirth was a beautiful girl waiting for his rescue... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.