The Third Civilization: Half Human and Half Demon

A major accident in human experimentation led to the drastic regression of human civilization and the emergence of new species of monsters. The surviving humans and monsters each built their own world. Because of the distribution of benefits, humans and monsters have become eternal enemies. Chen Han, who was born in the human world but has monster blood, was forced to enter the monster library. This was an opportunity to start a different life by chance, gradually changing the direction of the entire world's history.