Age of Demons: My System Was Blocked at the Beginning

The demons are resurrected, there are more and more supernatural incidents in the human world, and people are still living ordinary lives. But under this calm surface, there is a danger of genocide hidden. When the protagonist was young, he was seduced by a yellow fairy, which accidentally caused the system he was born with to be sealed. When the protagonist encounters a supernatural attack for the first time, the system is activated again. Let's see how an ordinary little person rises from the bottom, slays demons and counterattacks on the earth. It's not that the years are quiet, but that someone is carrying the burden for you. The warm-blooded protection of millions of people brought peace to this prosperous age.