Wasteland: the Lord of Beasts from Gray Nest

One hundred and thirty-two years of the Wasteland Era. Alien beasts are everywhere, and the old civilization has collapsed. Humanity has no choice but to build high walls and rely on the remaining technology to survive. Until one day, Bai Chen, who came from modern times, time-traveled into the body of a freak with a lifespan of only five days. He made his first pot of gold by pretending to be a "big boss" and has been out of control since then: externally, Bai Chen is a mysterious, powerful and decisive man in black robes; internally, he gathers refugees, controls strange beasts, and establishes order. Many years later, an iron rule spreads in the wasteland: Don't mess with anyone in black robes!