A demon king is the equal of a Celestial and there are 10 Celestials in this divine plane. He can't take all of them on. At least, someone of his apparent strength should not be able to take on all of the Celestials. It is expected that he will die several times. While he can return after death, he will just be wasting his Authority in resurrecting so it is better to ask for help. Which he did.
These two accepted his request despite his fearsome reputation for killing demon kings. They are strong and they believe that they will be able to protect themselves from him. After all, if he was so strong, he should be able to invade the plane alone and not share the loot from the divine plane.
The three of them are overlooking the fight while waiting for the right chance to interfere. Their combined aura pressured the entire divine plane. The three of them are about 10 kilometers tall so they overlooked the battlefield like insurmountable pillars. Every being in the divine plane knows that they are around. Their presence cannot be hidden. It sits on their back and presses them to the ground. Their presence has made it difficult for the defenders to stand because it feels as if they are bearing the weight of the sky.
But they are much worse than the pressure they exude. The pressure is just a byproduct of their existence. They themselves are like a terrifying malignant tumor that is about to explode anytime or a guillotine that can fall and behead them anytime. This invasion will continue as long as they will it. No one can have peace until they have been expelled from the divine plane.
This invasion has been going on for more than a hundred days. It is a very short time for an invasion but things will get worse the longer it continues. The aura of the demon kings will make the defenders mentally tired. It is mentally tasking to resist the demonic influence of their presence but that isn't the major problem.
The three of them have been throwing demons at the gods non-stop. There is no end to the demons no matter how many they kill. The gods have had to defend or risk the demons running rampant throughout the divine plane. They are clearly winning but they are also losing troops that they use to defend their divine kingdoms. It is an inefficient sacrifice to make for taking care of the symptoms but not the cause of the disease.
One of the reasons why gods are difficult to kill in their divine kingdom is because of the number of troops that they have. Remnants of the souls of their believers come to their divine plane after their deaths. These remnants serve their gods in the divine kingdom and can be turned into angels.
The angelic host is the main defensive force of the gods. Each angel is very precious and it will require thousands of years to create an angelic host. Gods need their believers to die and divine energy to create more angels. It wouldn't be a problem if the rate of their loss of angels isn't high. They will be able to replenish it quickly and resist the invasion indefinitely.
But they are being invaded by 3 demon kings. Aeternus alone is in control of almost 100 planes. That is trillions of demons under his command. They will run out of troops at this rate. That means the defenses of their divine kingdom will fall precariously. They can't allow that to happen or they will fall into a precarious situation even if they manage to repel the demon invasion. The only way to end the invasion early is to get rid of its root cause.
"It seems they are about to move." The succubus said.
Her voice can only be described with the words "silky", "sultry." and "slippery" It is slippery so it slips past most mental defenses to invoke sexual images in the minds of those who hear her. They will see, hear, and feel emotions of adultery, fornication, hot passionate sex, and mind-blowing orgasms.
Her voice tantalizes the senses. It tempts with promises of very fulfilling sexual intercourse. Those that succumb to these temptations stop fighting and lay down their lives at her hooven feet.
If one is doubtful of her temptations, you just have to take a look at her body to know that she can surely deliver. Just the sight of her smooth skin and curvy body can make anyone, be it a man or woman, impotent or not, sexual or asexual, to become weak in body and mind. It will not take much for them to succumb to the sweet voice of the siren of lust.
Her voice did nothing to Aeternus. He remained calm like a peaceful lake. The snake demon king on the other hand was affected. He got angry when he heard her voice. It is because unwanted cravings appeared within him. He wanted to grab her and do unspeakable things to her body. He wanted to possess her body and wreck her mind with wave after wave of pleasure before he explodes a torrent of discharge into her.
But he remembered who she was and he got angry that he was aroused like that. She is not some weakling that he can do whatever he wants to. He will pay heavily if he attempts it.
So he growled angrily at her, "Why don't you shut your mouth you slut."
His reaction to her is admirable. He was able to resist her mental coercion. Lesser beings would have lost their minds when they heard her voice. Their period of momentary mental weakness will turn into a lifetime of slavery to her. The only pleasure they will have is the pleasure of serving her for all of eternity. It will be their destiny to smile even as she drains them of all life. Anger is better than any of that.
---------
A/N: This is the bonus chapter for meeting the voting goal. Vote more and get more chapters. Don't forget golden tickets too. You are about to reach the next goal.