Aeternus has come a long way from that humble high-rank demon he used to be. His highest attack rating back then was for his spirit at 396 while his chaotic power was at 315. He could push his chaotic power to 1071 by using Accumulation to raise his state of existence from 5 to 17. Now he doesn't need to. He has traded his Accumulation in for a permanent state of existence of 21 making his chaotic power rating 1512 even without the boost from his other abilities.
His evolution came with a lot more cool things as a demon king apart from the obvious addition of another stat to his stat screen. The new stat AUTHORITY determines the boost he gets from his THE POWER OF AUTHORITY ability. It is a common ability that all demon kings have. Each level of Authority grants him a boost to his power rating. Since he is level 1, he gets a 10% boost. If he had another crown, his boost from THE POWER OF CROWNS ability will make it 15% and a third will make it 22.5%.
His POWER OF AUTHORITY is common among demon kings, it comes with the evolution, but his POWER OF CROWNS is a unique ability that he has access to as a Divine Demon King. Other kings of kings will only get a boost of X1.2 to their power for each crown that they get but he was opportune to change that by upgrading it to its maximum rank, the divine rank for a boost of X1.5.
The increase in boost will help him maximize each crown that he acquires. His height will ensure that he doesn't have to look too much for a target. There will be a demon king that will pick on him for him being short and being new.
His abilities are split between Unique ones and normal ones. Some of the normal ones aren't common, they need to be paid for during evolution like the AUTHORITY OF CHAOS and THE ESSENCE OF ENVY. Even then, his essence of envy is divine rank so the sin ability will be perfectly preserved during the transfer of ownership. There won't be a fall in the power of the sin ability from its dead previous owner to him.
The rest of his normal abilities come along once a type of Authority and crown has been acquired. His KING OF KINGS and DOMAIN OF A KING came as a result.
His unique abilities on the other are special. Some of them make his normal abilities redundant like his DIVINE KING' AVATAR and his KING'S AVATAR. While some Unique abilities boost his normal ones like his POWER OF CROWNS does for his POWER OF AUTHORITY and DOMAIN OF A KING. The boost from his crown will increase the suppression of intruders in his domain by 10%.
He also gets another boost from his DIVINE KING'S ability. He gets 1% for every demon duke in his family. Since he has 99 dukes he gets 99% which brings his total boost to 109% to his power rating.
A demon noble will give him 0.1% and a high-rank demon will give him a 0.01% boost. He can have a lot of them but it will burden his soul. The boost of demon dukes might be high now but it is best if he uses his soul to withstand the burden of more crowns than to accumulate subordinates. His increase in Authority will have a better return that way.
"Maybe I shouldn't have killed all those demon nobles. They will be perfect to try my ESSENCE OF ENVY ability on. But it's all good. It means the demon lord won't be able to run away." He said after going through his abilities.
He doesn't feel regret about killing the demon nobles as the pain of his claymore cutting into their bodies cut into his soul during his trial. But now he wished he hadn't. He would like to see their mark of sin ripped from their dying soul, fragmented, refined, and then added to his.
Killing them has its advantage. Now Beelta won't know that he has become a demon king and won't try to run away. She will be waiting for him to stock up on souls and maybe some divine power for his Accumulation before he returns to the abyss. She will expect him to be full of confidence and attack her. So she will wait for him. But he has other plans for her. The two of them are not on the same level anymore.
The ESSENCE OF ENVY is the upgrade of the POWER OF ENVY. The POWER OF ENVY is the first sin ability that a demon of envy gets as a mid-rank demon. They acquire the other one when they become a demon king. The POWER OF ENVY enables a demon to copy attacks but with the ESSENCE OF ENVY, a demon king can keep an ability forever without needing to copy it or be mindful of the number of copies they have. They take the mark of sin of a demon and add it to theirs and can use the abilities that come with it forever. Its only disadvantage is that it makes it more difficult for a demon king to become a demon god the more their mark of sin is corrupted with the marks of other demons.
"The liberation army should be here soon. It will give me the chance to stretch my bones. In the meantime, I'll start on my mark of sin." He said to himself.
He intends to start on the requirements to become a demon god while he waits for the liberation army that the gods have sent to fight him. Their preparation and rallying of troops didn't escape the notice of Legion. There are plant spirits all over the plane spying on the activities of the gods and informing the tree father.
He will fight them and use them to relax a little. Then he will leave when the construction of the stronghold has finished. The plane is not completely theirs yet so there is still a lot to do.