Humanity is at war with the vicious Luo people, and they need help more than ever. At this time, those humans who have hidden in the shadows for hundreds of years, those who have the ability, begin to step forward. Some of them choose to share their knowledge with the rest of the world in order to win the war, while others choose to keep their abilities secret.
In this war, Li Yang lost everything - his home and his family. The only thing he inherited was a tattered book that he couldn't even open. However, when the book was finally opened, Li Yang obtained a system that completely changed his life. He gradually becomes stronger and stronger by completing one task after another. Until one day, the system gave him a task that he was not sure he could complete: "It's time to feed! You must drink human blood within 24 hours, otherwise your HP will continue to decrease until the task is completed."
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.
