Devouring the Starry Sky, Starting with a Bloodthirsty Knife

In 2015, the RR virus broke out and animals mutated... The war between humans and monsters has just begun, and the city has become an isolated island surrounded by monsters... Food depletion, death crisis, loss of humanity... Xu Yuan came to the world of Devouring Starry Sky, and relied on a bloodthirsty knife to kill villains and monsters, devouring and refining their blood and souls, and quickly grew and rose in this great nirvana. I start with a knife, and all my equipment depends on cutting. Save the earth, kill through the universe, and let all races tremble and crawl under my sword!