Oh boy, so quick? Well, half of it is from the Kuroinu wiki to have some background.
Anyway, I'll try to write another day if I can.
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Eostia
Dark Tower
Before the Black keep or otherwise called Dark Tower. In the past, there were only small islands in the ocean.
Two giants came down to those islands from a floating island in the heavens to rule the planet. There was a male giant and a female giant.
Seeds of war take control of the Earth.
The male giant declared that the Earth was for giants, but the female giant declared that it was for those living on it.
The giants broke apart and fought.
The battle of the giants leads to the end of both.
After the two giants had fallen, they reflected upon their conflict and vowed to never fight upon the surface again.
The two fallen giants formed a single continent.
Several creatures were born from their flesh.
The dark elves and high elves have been in conflict since they were born.
It is believed that the dark elves came from the brain of the male giant.
The progenitor of the high elves was born from the tears of prayer the female giant wept as she lay dying in the terrestrial realm.
Their progenitor desired a child dearly and stepped into the stream of tears between the two giants and from this man and woman were born.
This original man and woman are the original high elves.
The original high elf woman had stunning flaxen hair and resembled the female giant.
Her name was Larentia, the goddess worshiped by the Church.
In an age long since passed, Larentia sacrificed her body and life to save humanity as they were on the brink of being annihilated by a plague.
Since that day, humans have worshipped Larentia as a Goddess with deep devotion.
When Larentia sacrificed herself for the sake of humans...
Larrentia's breasts continued to spurt milk even after she died, and it is said that the milk instantly cured the illness of man.
A hermit made a prophecy to the humans and other races who were saddened by the death of Larentia.
Goddess Larentia will appear on this earth again someday.
And when the reincarnation of Larrentia appears, that person's body will have the same miraculous attribute as the original Larrentia.
Celestine was recognized by the Church as Goddess Larentia because a miraculous sign appeared on Celestine's body.
Celestine was a virgin at the time, and the milk flowing from her breasts is said to be as sweet as honey and to have the power to bring even the dead back to life.
Once the Dark Tower came.
Dark elves have extraordinarily long lives. They don't die from illness or injury. Not even from old age.
Dark elves are only born female.
They're a rare breed. They have a special method of breeding.
Dark elves use a ceremony to get impregnated.
A single dark elf is chosen once every one thousand years to undertake the ceremony.
Dark elves believe that the northern part of Serenus will be revived as the male giant.
Way out in the North of Serenus is the dark elf village of Nidavellir.
There is an underground temple deep within the caves there... By bathing in those fluids, dark elves can have a child.
The cave is the testicles of the male giant. The fluid is his sperm.
Born from the mind of the male giant, dark elves revere the notion of being impregnated by their own father and creator.
And only dark elves born from the male giant's sperm are considered pure dark elves.
Dark elves yearn for it. To have the seed of the male giant, their creator, and their father, inside of their womb.
Olga was chosen to undergo the ceremony.
She bathed in the holy fluid deep within the caves of that temple to get pregnant with that precious child.
And to purify her before her precious ceremony, the Black Keep was constructed by the golems the dark elves controlled.
The magic that started to flow was just a byproduct.
The power of the demons grew and grew. They gathered together, desiring her magic.
The golems that guarded her were destroyed by the hoard of demons, and Olga was revered as the queen of monsters contrary to her desires. This ended the ritual as failure.
Several hundred years ago, a large castle suddenly appeared at the entrance to the north. It is called the Black Keep or dark tower.
Its appearance was the beginning of the change in eras.
Around the Black Keep, the land was instantly turned barren through powerful magics.
There was no day or night in that area. The sky was always christened a blood red.
A miasma hung in the air. The land was barren. The bubbling waters also all turned to poisonous green swamps.
The humans, elves, dwarves, and halflings had their strength stolen from them and their bodies deteriorated just by living there.
A rumor began to spread that a single beautiful dark elf had taken residence in the Black Keep and ruled those barren lands as the Jet Black Queen.
The land came to be called the Kingdom of the Jet Black Queen because all life deteriorated there.
But there was an exception.
Ogres, orcs, goblins, trolls, and gargoyles. All the creatures with wicked desires came from the northern hinterlands and gathered in that cursed land.
The hostile environment made it a land of the dead for humans and elves... But it was a land of abundance for those monsters.
The queen's magic gave all those wicked creatures in her kingdom immense power.
Their already immense power was multiplied several times over and their wounds started to heal in an instant.
The powerful regenerative properties granted to these creatures were enough to allow an arm to be grown back as soon as it was torn off.
"Boring…"
Erix said as he ripped the pages of the narrative and scrapped many of the things that were fated to happen and changed it into something more satisfying. It was the next day, Olga and Chloe were in bed with Amaia, Arryn and Slaanesh currently asleep.
"Erix-sama~~♥️"
Both dark elves were having blissful dreams about something he softly smiled while he waited for them to slowly wake up giving them each passionate kiss.
Once that was done, they had breakfast together where Olga and Chloe were presented with a wide array of dishes that made them squirm in delight.
Erix wasn't missing much when he diluted time in the world he was in and the chat group only responded with his home-world time therefore he's not missing any message.
"Is this meal normal in your homeworld, lord Erix?" Olga asked having feasted on meals but none had such deep flavored before.
"Ah yes, these delicacies are professionally made by my empire's top chef. Though, I know someone whose culinary skills could make it intensely pleasurable." Erix said, taking a sip of the bitter dark coffee and saw Chloe chowing down on a puff pastry like a child then blushing once she realized what she did.
"A-Apologies for my action." Chloe blushed in embarrassment making Olga giggled and Erix chuckled.
"Feel free to act how you wish and I am pleased you liked the meal." Erix said always soft on his woman and Arryn giggled.
"Thou art truly indulge in spoiling thy consort." Arryn commented and Amaia chimed in.
"But you wouldn't want to be too strict, do you?" She giggled and Erix simply smiled.
"The person you mention, Lord father. I wish to see how indulging their meal will be and if they could satiate my unending desires." Slaanesh said showing great interest in Erina who is a top class chef.
"Perhaps in another time, for now there are few things that we have in our agenda. First, I would like to bestow powers into you and make you even stronger. Second, you'll learn Tier magic. Fourth, we will head out the other fortress and stop the remaining Kuroinu. And Finally…"
Erix sees many things, spending his Omniscience shifting the narrative and acquiring what he wants.
"Have the Seven Princes knight join my harem." Erix appeared more Demonic than normal, intended to capture the hearts of the woman who would have ended up defiled.
"Tier magic?" Olga had never heard such magic before and Erix smiled, demonstrating the magic summoning a Kuroinu mercenary who was healed and regained clarity yet was bound.
"P-Please!!! Let me go!!! I'll do anything!! Please end my suffering!!!"
The Kuroinu mercenary had been placed in the omega Sanction where they will live for all eternity and those special few were sent to the Slaanesh floor to be used as toy and entertainment.
"This is Tier magic where you don't need much chanting." Olga and Chloe watched closely as Erix grabbed something and saw his hand holding a beating heart.
[ Grasp heart. ]
He crushed the beating heart like it was nothing and the Kuroinu Mercenary died on the spot and his soul was liberated.
It was overjoyed that he was free only For Erix grabbed it and sent it back into its body where it was resurrected back to life. The two dark elves were in awe at how he has control over life and Death itself without even breaking a sweat!
"Nooooo!!! Just kill me already!!!!" It begged for him to be free from all the horrid things yet Erix didn't spare any mercy.
"I delight in your suffering for the reason is not me for I am simply the cause and effect while you are the root of your own suffering."
Erix looked upon the Kuroinu mercenary who couldn't do anything and felt utter dread upon meeting his tormentor's gaze.
"If you hadn't been blinded by your own lust and depravity then none of this would happen. Therefore be silent and accept your fate for there is no one to blame but yourself. Be it in this life or the next you'll eventually find me."
He said before demonstrating a few more tier spells while Olga and Chloe enjoying the people who would have defiled them were not suffering.
Few minutes later, Erix gave them the magic system then linked them to Central Axis World giving them skills and unique skills while evolving them.
Nothing in their world could ever hope to touch them when they became more divine and powerful. Olga felt like the world was insignificant while Chloe now grasped the power to protect her lord and queen.
"Alright, we have the whole day for you to get used to your new powers."
Erix said and took the whole day in helping them in exploring their abilities. Once they were done, the group began their journey to the first fortress where he arrived at the Fortress of Feoh.
"What a lively place."
Erix was currently walking towards the main gate without any care while Arryn and Amaia returned to their true form where it was surprising for Olga and Chloe to see them transform into a weapon and accessory.
The First Fortress of the Seven Shields Alliance was located in the North of the Dark Elf Territory.
It was the closest to this terrain.
The City-State was ruled by Alicia Arcturus, one of the Seven Princess Knights. Although next to her in the Fortress was Prim Fiorire, another of the Knight Princesses.
The City had high walls although it was quite small.
It was only about 2 kilometers in diameter. In it was a small army that was 95% women.
"I know we've become strong but would it be alright to simply walk our way inside?"
Olga voices her concern since she wasn't even hiding her face where those who see her don't even register who she was. This includes Chloe as well.
"These despicable humans are not to be trifled with. Though, I am not saying you would lord Erix and simply think it might be troublesome." Chloe voiced her thoughts as well and Erix nodded.
"I understand your thoughts but there is nothing to fear nor dread for I am with you. No power in this world can hope to match ours." Erix reassured her and this helped ease her concern for a bit.
"Fufufu~ Lord father's true power is beyond your wildest imagination and simply enjoy indulging in taking his time." Slaanesh said while they simply accepted it and would by his side till the end because they were gifted with something precious as they rubbed their abdomen.
"Well, I simply want to have a walk. A very enthusiastic walk." Erix evilly smiled as even in the brightest daylight his face cast a shadow and the red glowing eyes peered through.