The Necrotic Death Lords had infiltered the Hell Gate a few days ago, just before Kireina entered it. however, unlike her, they entered through the actual gates and were randomly sent to the Greed Layer of Hell, where they met with Plutus, who was sleeping after drinking alcohol.
The Necrotic Death Lords noticed the level of power he had, and they quickly used this opportunity to run away from him while he slept, infiltering deep into the entire layer and investigating its interior in detail.
The skull-faced entities whose power was as high as Supreme Gods if not higher had been suppressed due to the power of Hell. Even with this Archdemon Avatar Undead as their anchor, it didn't meant they would be able to freely traverse everywhere.
They had been given the task by their Hegemonies within their original planet to seek new sources of energy within this place, alongside ways for their army to enter a full-on scale attack there. They wanted to not just get there and absorb energy though, the entire Netherworld Plane wanted to invade Hell!
For that purpose they had to repurpose the powerful demonic energy flowing across the entirety of Hell, they had to make it into their own power so they could better adapt to hell, and then conquer it! however, the Necrotic Death Lords and the Undead of the Netherworld Plane were complete opposites of the Demons from Hell, the same way they were from the Angels from Heaven. These figures of great power wanted to find a way to make their very unlikely power somehow merge with the even more unlikely power of demon energy.
Due to this, this group of investigators were tasked with this, and were seeking ways to absorb the demonic energy from the gates of hell in some sort of way. And now, they had suddenly reached an area filled with massive mountains made out of red-colored jewels named Demonite Mountains, which contained immense quantities of crystalized demonic energy…
Through their journey here they had slain many demons and demonic beasts carelessly, completely annihilating small villages of innocent demons trying to simply get by with their daily lives and survive, massacred so they could be extracted of their energy and cores… the Necrotic Death Lords were even worse than Kireina, as they lacked any empathy for the living and were cold and emotionless, almost like machines themselves.
They had already tried many times to absorb the power from the corpses, souls, and the demonic cores of the demons, but had failed all these times, as they were unable to do so, and their necrotic cores rejected such power without them being able to do anything over it. Due to this, the skeletons felt frustrated and seek more power, they wanted to quickly build a facility made out of Undead through their powerful Dao of Necromancy, building an Undead Facility, a powerful Building which was also like a formation, using simply Undead raising techniques to create it, a next-level ability these entities possessed.
"This is it! this is the perfect place for the construction of our facility… this place possess the largest quantity of demonic energy around. Let's quickly make our facility to begin the extraction of demonic energy."
"Indeed. If we begin right away, we can transform the demonic energy and refine it into usable energy for us, using this, we can make demonic cores that can adapt to our necrotic energy."
"Sounds reasonable and within the scope of our capabilities. That seems to be the only way to do it. After slaying over a million of these pesky demons we have yet to find the power to assimilate their demonic energy… to think these aberrant creatures have such an arrogant energy…"
"Indeed, but this is it, let's make it right away."
The five Necrotic Death Lords began to overflow the entire place with Necrotic Energy, as many magic circles emerged out of thin air one after another. Although they were magic circle-like, they were in fact Necrotic Circles, which were fueled with necrotic energy and the power of their knowledge, conjurations, and powers.
They quickly activated several other conjurations through chanting that sounded like the voice of death itself, the energy of the Dao of Necromancy within them began to resonate faster and stronger than anything ever before, surging from their bodies and converging together with their Necrotic Energy into streams of black, sickly green, and phantom blue energy, flowing over the floor and quickly summoning a massive entity made of bones and rotten flesh.
The massive entity resembled a grotesque tower of bones and rotten flesh coated in a phantasmal and bloody aura of death. The entity expanded its roots of flesh and death over the entire mountains, absorbing the energy within them like streams of red-light essence…
The essence streams flowed into the necrotic circles and then into the rest of the Undead, beginning a strange and bizarre process where it was being transformed into usable energy for them, fusing together more and more, and then being thinned out, purified, and tainted once more.
The five Necrotic Death Lords floated around the entire facility while connecting their own Phantasmal Souls with it and receiving this energy after being transformed, forcing it to move into the inside of their ribcages where their pale, blue-colored necrotic core was. The energy was gathered there and then concentrated together into something greater, being infused into a single stop and trying to materialize it out of nowhere, they were slowly trying to materialize this energy into a usable power for themselves, something they had yet to try with this, they were surprised to find out it was working, as a thin layer of crystal emerged already around their chest. Perhaps this was going to be easier than anything ever before.
Or so they thought, as a sudden disturbance in spacetime happened near them, someone teleported right before their very noses… a beautiful fairy with a malicious smile, and her own army of friends and family, at her side, a powerful blue slime shone with bright light, the same supreme power as the fairy…
