500 year's ago a global catastrophe called the gate's manifested around the world and special being's known as spirit's appeared they brought chaos to the world and humanity was on the bring of extinction but then a legendary alchemist decided to breed human and spirit and the end product shook the world and therefore the index theory was discovered.
The child became what we called an index.
And with this ground breaking discoveries the people began breeding with spirit's but instead of making index's they made 4 different species that similarly looked like a human's.
The first species was called elves the elves had golden blood, the second was beast men which had yellow blood flowing through them, the third species where called Virentus and they had pure white blood flowing through them.
But the fourth species was absolutely terrifying they where called demon's, a race feared by all species.
The demon race brought fear to the entire world and because of that the other three races decided to do something about this.
The three races formed an alliance with each other and chose the strongest member of each race's to fight against the demon's and by doing this the alliance was able to reduce the calamity that the demon's brought. But this wasn't enough as the demon race also brought a strong individual to fight for them and he was called Telvida.
Telvida challenged the three hero's of the alliance and brutally killed them and just when the alliance thought that all hope would be lost a human named veldiva used the index theory to create a new being, one made out of both human, spirit, and demon blood and it created a little girl that had silver hair and her blood was silver thus a vampire was born.
This vampire girl was named after her father who created her so she was called Vida.
Vida was created to help fight against the Great demon Telvida but her father couldn't send to war because she was just a little girl.
So instead of helping the alliance he ran away to a far away land where no one could find them and he decided to live a peace full life there with his daughter.
Year's passed and vida had become a beautiful young woman, though she and her father lived in a secluded land where no one else lived her father still gave her the love she deserved and needed.
Then one day everything changed the demon army had grew in size and had become a formidable force, Telvida was know known as the demon king and he had given birth to a son who was at the same age as vida, he was known as Gad.
Gad had never received love from his father and was constantly exposed to death and so he became a cold hearted tyrant who was merciless and pure evil.
Yet on that faith full day Gad had gone out with some of his men to a far away land in search of more territory to conquer but instead finding what he wanted he found Vida peacefully sleeping by a lake, and in that moment for the first time in his life he felt a strange warmth in his body and it wasn't fire no it was something else, something he had only heard rumour's of something a demon had never felt before.
Gad and Vida slowly became close to each other and everyday they decide to meet each other without their father knowing because they feared that one of them might reject the idea and so they kept it hidden.
Month's passed and the war between the alliance and the demon king's army had only grown and there was nothing the alliance could do so they decided to hold a meeting between their best scientist and it was at that meeting they found out that a being like vida exsist's.
Having this new found knowledge the three races had branded veldiva and vida as an enemy and gave an order to the entire army to find veldiva and kill him and at the same time capturing vida as a weapon.
The order was strict and absolute so immediately it was given they searched everywhere to find both vida and her father.
Then one day by the dead off night the army had found who they were looking for, and without mercy they quickly stormed their small cabin and brought them out, and in an attempt in trying to protect his daughter vida, veldiva died right in front of her.
Vida screamed as her black eye's became crimson red, she fell in a rage and massacred every single soldier, she drank the blood of her enemy and also gain the power of them as well.
By morning gad had stopped by to say hello to Vida and instead of seeing vida's happy normal self, he was met with the sight of vida holding her father's lifeless body like while crying at the same time and as he saw the alliance guard's dead body littered everywhere.
It didn't take Gad to long to realise what had happened.
Gad was furious in that instant he flew towards the alliance and spread calamity and terror for seven day's and seven night's without stopping, his rage was endless no one could stop him not even his own father.
Till on the eight's day vida came and sang a song she used to sing to Gad and like a tired beast he stopped his rampage and fell into the arms of vida.
The people cheered and sang praises to the god's for send an angel to stop the calamity but no one ever knew it was Vida.
And after the battle both Gad and Vida Vanished without a trace leaving no hint's of where they where going.
And the disappearance of the demon king son shocked the demon king to the point he had to stop the war and signed a peace treaty with alliance which stated that the demon's would live on the other side of the world and if they were to come live here they would be treated as slave's.
And so the demon king agreed and carried his people and left.
2000 years later civilisation had grown and different technology had been made.