Catch That Cultivator

Wang Yu traveled to the fantasy world and awakened the system to become an immortal cultivator. However, he found that this world was a little different. Demons rule the world, and the people here are even more cruel by nature. They fight and kill at every turn. Eating people and drinking blood is commonplace. And cultivators of immortality are not tolerated in the world. It can be said that everyone shouts and beats them, and everyone punishes them. So as a good young man, Wang Yu decided to change everything (certainly not because he wanted to save his life)