As long as one understood the composition of the Abyss and demons, it became very clear why Variant Demons found it difficult to advance.
This was the real world. There was no so-called balancing mechanism.
No one would weaken or suppress you just because your racial stats were too high.
As long as the underlying cause was found, everything naturally became clear.
This was also an important reason for studying normal souls.
As normal souls were drawn toward the Abyss, their souls underwent Corruption.
What was Corruption? When a normal number transformed into a broken number, that was called Corruption.
This was also one of the Abyss's most important taboos.
After a normal soul underwent Corruption, it became a broken soul.
This brokenness differed from ordinary death.
On the Material Plane, when a person died normally, the core of their soul remained undamaged. Only the outer soul body fell away, while the core of the soul—the 'number'—remained unaffected.
This core could return to a divine kingdom or enter reincarnation.
The souls of demons after Corruption were different.
After careful research, Naimus discovered that the cores of their souls were broken from the start.
This also explained why most demons were so chaotic.
When their very foundations were incomplete, a little madness was understandable.
Afterward, Naimus studied Moromo, the Variant Demon altered by Moriturus's Fusion taboo.
There were several holes in his soul, granting him the Strong Soul trait.
Later, Naimus discovered the truth.
Those holes were not wounds left behind by attacks targeting the soul.
On the contrary, those holes had appeared because the healing had not been thorough enough.
Moromo had originally been a normal demon, which meant his soul had initially possessed a broken core.
Moriturus's Sin Soul taboo—Fusion—had merged another soul into his.
This had repaired the