Those remnant souls had split part of themselves into soul-preserving stones before death while refining their bodies, allowing them to persist in the demonic environment.
However, due to their incomplete souls, their memories were fragmented and they even forgot their own names.
After that, the remnant soul made a deal with the protagonist, telling him everything he knew about the Demon Abyss Realm.
The condition was that the protagonist would take him to the Demon Abyss Realm and help him find a traitor who had betrayed humanity, so he could avenge his great enemy.
The protagonist agreed.
With the guidance of the remnant soul cultivator, he infiltrated the Demon Abyss Realm and learned its truth.
It turned out the Demon Abyss Realm was a world similar to the cultivation world.
The Three Thousand Realms of cultivation were filled with immortal energy, while the Demon Abyss Realm was filled with demonic energy.
