Retired Emperor, Kill the Ancient Beasts at the Beginning

Shen Yi, a good young man, traveled to the ancient times and successfully activated the system. He single-handedly prevented the war between gods and monsters, signed a peace contract, and worked for the benefit of the human race. He was later honored as the Human Emperor. With the change of dynasties, Shen Yi experienced thousands of years and lived in modern society again, living a comfortable retirement life. As a result, the accidental death of the little girl next door led to clues pointing to an ancient beast, and Shen Yi killed it in anger. At this point, the Human Emperor Shen Yi has returned to the sight of the gods and demons. A certain demon: "Is he Shen Yi? No way, he looks like a little kid no matter what?" A certain demon: "Shut up, the Human Emperor is also named by you?" A certain demon: "He has been retired for so many years, and he is still a human being. He is so scared." Boom! A certain demon glanced at the certain demon who was kicked out of the atmosphere by Shen Yi: "I asked you to stop talking..." However, the death of the ancient beast is not the end, but the prelude to a conspiracy. As the only human among the two races of gods and demons, Shen Yi seems to be the key breaker... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.