Hello readers, it's DragonKing0117 once again. This time I'm doing another series with a Massive Crossover. For the most part however, this potion of it will mainly stay in the Queen's blade universe. Unfortunately, Issei won't show up until probably the third or fourth dimension arc so for those who were hoping to see him here, I'm sorry to say that he is NOT here (Though Issei in the Queen's Blade Universe would be interesting). Anyways, please welcome the series Rex Omnium.


Author's Note: I do not own High School DxD even though I'd love to...


The truce's creation was thanks to their deaths...

The war between the Angels, Fallen Angels, and Devils had been going on for millennia. Around a thousand years ago, near the climax of the war, the leaders of the three groups, God, the Maou* (Lucifer, Asmodeus, Leviathan, and Beelzebub), and most of the leaders of the Grigori*, died. After this, Azazel, leader of the Grigori became the first to step down from the war. Michael, acting in place of God, and the new Maou (Sirzechs Lucifer, Falbium Asmodeus, Ajuka Beelzebub, and Serafall Leviathan), also stepped down from the war and creating a three-way stand-off.

However, before that time, there was an incident that shook the world that spanned over half a century. That incident began with the devil's creation of the Yūgō kōtei* in the House of Abaddon. This was due to a research project, headed by the original Lucifer himself, created with the goal of creating a super devil, one that had all the abilities of the devil families. By injecting the required DNA into the fetus of a devil baby, when born the devil would have power that rivaled the original Maou, turning the war's balance into the devil side's favor. The research succeeded with the birth of Daniel Abaddon.

Ten years after his birth, the devil's side incorporated Daniel into the Devil Army, and the Devils took advantage of the war for eighteen years. At the end of the eighteenth year, the unthinkable happened, Daniel came to a bloody draw with the Archangel Gabriel and both disappeared from the scene. At the same time, the three factions created a temporary alliance to deal with the two dragons Albion and Ddraig. Months later Gabriel was found with a child in her arms, that she claimed as hers and a human male's. It was a Nephilim* named Damien Morningstar Jr. A week later, before the uproar from the scandal had settled down, another appeared, this time with Daniel and his child, a Cambion* girl named Benita Lereaux.

With the children of an Archangel and the Fusion Emperor appearing the Devil's and Angel's side had a power increase. Not only were the two children as strong as their parents, they possessed Longinus, one of the most taboo of the Sacred Gears. Damien revealed to have the True Longinus while Benita possessed the Zenith Tempest. The fighting intensified as they grew older.

Then, on that fateful day, Damien and Benita both at age 24, fought against each other. The fighting was so severe that they destroyed the continent they were on, called Atlantis, and sent it to the bottom of the sea. After three days of non-stop fighting, both fighters disappeared over some ruins, now called Stonehenge, similar to their parents disappearance, and could not be found.

Months passed as not even God himself could find them and then, two years after their disappearance, the two were found in the outskirts of a village in Japan. The two had apparently lost their powers and decided to live together until they recovered their powers and were found, two years later. Both God and the Maou became overjoyed when they had found their precious champions. However as they were about to take back the two to their homes, a cry was heard and the blood of everyone ran cold.

Soldiers tried to investigate but were instantly killed by both Damien and Benita as they jumped towards the noise with their arms outstretched.

"Go away and leave this place if you wish to live!" Damien had yelled.

"I will kill all of those who don't leave this instant!" Benita yelled out.

However a soldier snuck behind them and screamed out his surprise at what he found. It was a black-haired man with angel and demon wings holding a baby boy.

"It's the Nephalem* holding a baby boy!" He screamed.

The shock on the faces of God, the Maou, Gabriel, and Daniel was enormous.

"Is that your child?" Daniel exclaimed.

The couple nodded. At that moment the soldier fell dead by the hands of the Nephalem as he stood up.

"I will prepare the rift, Damien-sama, Benita-sama." He said as he held up a key-shaped jewel and began to chant. Gabriel widened her eyes.

"That's the World Key, Transeo*! We have to stop him!" She exclaimed. The others nodded in agreement. Not only could they not allow the Nephalem to live due to its unpredictable nature, the baby of two of the strongest in both Heaven and Hell had to be observed as well. Damien and Benita got in the way of their family and leaders.

"We will fight you to the death in order for our child, the Tribus*, to live!" They exclaimed.

The group gasped at that. According to a prophecy presented to God by Delphi, oracle of the Greeks, the moment the first baby born of Human, Angel, and Devil blood is born, God will die and chaos will reign over multiple dimensions.

"Now!" The Nephalem shouted as it spoke the magic words. "Realize my desires Transeo! Change my view of the world! Muta Re*!"

A bright light shined, blinding all those present. Soon the light disappeared along with the Nephalem and the Tribus baby. This enraged God and the Maou to the point where both attacked the couple that was left. There was a loud explosion and dust flew everywhere. When it cleared, both Benita and her father, who protected her husband, were dead.

"Nooooooo!" Damien screamed before getting off the ground and attacking. In a flash, the heads of Asmodeus, Beelzebub, and Leviathan flew in the air. Just as Damien was turning to kill Lucifer, he felt a spear of light run him through. Damien turned to see his mother holding the spear. He almost shouted until he saw his mother's eyes glazed over and Lucifer behind her raising his hand, a shadow extending towards Gabriel. Damien began to chant in a low voice.

"O Spear... The true Holy Spear which pierces through God... Suck the ambition of the King of Domination sleeping within me and pierce through the gap of blessing and destruction... You... Announce the will, and turn into a glow... Truth Idea!"

As Damien shouted this, Gabriel collapsed, avoiding the attack that followed. A wave of light flowed out in a circle from Damien annihilating everything in its path. The attack killed Lucifer instantly and critically injured God, before Damien fell to the ground, dead.

Shortly after that incident, God died, and then new were leaders elected. The three-way stand-off finally began while all knowledge of what caused the death of God and the Maou became top-secret information. Years passed and finally the war came to an end with the treaty between Angels, Fallen Angels, and Devils. However the information about the cause of all of this, Benita Lereaux, Damien Morningstar Jr., and the Tribus born to the two, were not forgotten.

As for the Nephalem and the Tribus baby, where they went, and when they went, was unknown to everyone...


1. Maou = Japanese for 'devil'; In DxD light novels used in place of Satan to distinguish a Devil as a leader

2. Grigori = An organization for the Fallen Angels headed by Azazel

3. Yūgō kōtei = Japanese for 'Fusion Emperor'

4. Nephilim = A Half-Human Half-Angel hybrid

5. Cambion = A Half-Human Half-Demon (or Devil in this case) hybrid

6. Nephalem = A Half-Angel Half-Devil hybrid

7. Transeo = Latin for 'Cross Over'

8. Tribus = Latin for 'Three People', 'Three Being', and/or just 'Three'; In this case used to name a Part-Human Part-Angel Part-Devil hybrid

9. Muta Re = Latin for 'Change My Reality'