A number of figures suddenly arose from the lava sea—humans, monster spirits, dragons, and even divines. However, none of them were alive. All of them were living spirits inhabiting the bodies of zombies. 

They were all keepers of this tomb.

Tomb keepers!

On Earth, tomb keepers were said to be such loyal followers of the buried dead that they turned into zombies to guard the tomb, lest their master’s resting place be disturbed by tomb raiders.

Unlike zombie kings, who devoured the essence of others to return to life, tomb keepers were merely living souls inhabiting undead bodies. They maintained their own consciousness while gaining the enormous strength of a...