Secondly, centuries ago in the Million Mountains, there was a Shadow Demon King, whose true form was a level six shadow demon, immensely powerful. Later, he was trapped and killed by a joint scheme executed by two Supreme Archmages from the empire.
These two were none other than the Blood Banquet Dharma King and the Thunderbolt Supreme Mage... thus the crystal core is either in the Archmage Tower or with one of these two.
The news of the Mind Flayers made Levi fall into deep thought.
In the end, he decided to first kill the Shadow Ancient Demon and take its crystal core for later use.
As for the crystal core of the Shadow Demon King, the uncertainties were too great.
Firstly, its whereabouts were unknown.
Secondly, both the Blood Banquet Dharma King and the Thunderbolt Supreme Mage were genuine level six experts.
If there weren't a special situation like Roman's, no matter how he planned, he could not possibly kill a level six expert.
