When Kent entered the Soul Universe, he moved toward the location where Calix had entered seclusion. He wanted to see what he had become after reaching the Root Immortal Stage.
When he first created him, he found out that a Soul Warrior is more than a tool for battle. They are real living beings that can make their own decision and handle their own evolution.
Calix came out as a [Soul Reaper].
This made him someone whose main strength lies in soul battles. But that wasn't all; his job class came with one innate ability called [Bind].
This ability allows him to draw strength from Kent's Soul Universe. This meant that, just as Kent draws strength from his Blood Sea, Calix draws his energy from his Soul Universe.
In return, he produces something called [Soul Crystals], which, so far, Kent knew could be used to strengthen his soul.
When he created Calix, his soul cultivation went from Tier 16 to Tier 19. That was quite a leap from merely creating one Soul Warrior.
