Lord of Secret Arts!

Mystery is nourishment; it will no longer let me remain ordinary.

After coming to a world with a background similar to modern Europe, Fei Lin has spent twenty years relying on his precociousness and learning a skill to finally become a respectable man.

He originally thought he would marry, have children, and live out his life in peace, but then he discovered that beneath the world's shadows there is another world.

In that world, there are secret arts practitioners who cultivate secret arts and wield extraordinary power.

There are uncanny beings that lurk in the dark, watching humans and feeding on them.

There are evil god believers who worship evil gods, please them with bloody sacrifices, and exchange blood offerings for power.

There are evil gods who wander outside the world, spying on it, and whose merely seeping traces of power are enough to drag people into ruin.

Using mystery as nourishment, the ordinary him of twenty years no longer remains ordinary.