This spatial instability, where signs of the existence of gaps can be directly observed, seems to occur only at night.

So, this might also be the reason why Semi had that bizarre dream he told Gu Xinghe about before.

Because it is close to this spatial rift located in the city of Set.

Furthermore, the Dream Realm is a space that can accommodate human consciousness as well as real physical bodies.

And dreaming is one of the ways to enter a dream world.

So it was the dream that Semi, who was still a child with a richer imagination and more active inspiration, had.

Perhaps it was his consciousness that entered the dream world.

In this parallel world, which is very similar to the real world.

Semi saw ghouls that could freely travel between the real-world cemetery and the dream world.

What Semi saw at that time was his mother's body being stolen from the real world.

A group of ghouls brought this corpse into the dream world.

However, at that moment, while Gu Xinghe was still looking at the spatial rift in front of him and thinking,

He suddenly sensed a spatial fluctuation emanating from this crack.

Perhaps it's because Gu Xinghe has recently been reading books about Atlantis's spatial theories.

He himself often uses the game system's teleportation feature to enter different instances.

In addition, he had already seen and come into contact with quite a few beings from the subspace.

With all these enhancements, Gu Xinghe's understanding of space has also deepened considerably.

Therefore, at this moment, Gu Xinghe was able to quickly perceive the spatial fluctuations emanating from the crack in front of him.

Upon sensing this fluctuation, Gu Xinghe stepped back a few paces away from the black crack.

Then, it seems that physical laws such as volume and size were completely ignored.

Gu Xinghe saw a dozen or so ghouls crawling out of the spatial rift in front of him.

Ghouls are humanoid monsters that look like dogs and feed on rotting corpses.

These monsters have canine-like faces and sharp claws, stand upright on two legs, and lean forward.

Because they often forage in graveyards and sewers, ghouls have a layer of rubbery skin.

They always had the same rotten, filthy smell about them.

Upon seeing this group of suddenly appearing ghouls, Gu Xinghe realized—

So the reason why ghouls couldn't be found in the entire underground space before was because these monsters had all traveled into the Dream Realm?