In the World of Fairies and Demons, I Am Not a Hero

In the battle between immortals and demons, ordinary heroes who lost their wives and daughters are determined to take revenge. The system that comes with him after birth requires him to kill enemies before he can level up. So he became a demon slayer in an area on the edge of human life, protecting the livelihood of the village. Gradually relying on the system to develop a hero with a god-like physique, he finally has the power to kill the enemy. But in the face of the former enemy, the new star of Xianmen who is admired by everyone... How should a hero choose?