Disclaimer: I own nothing that you may recognize.

AN: A few years ago I wrote the story Heir of Eden, which is still up for a while longer, and had some mixed reviews, and I lost my muse for the story. Now here I am writing a new High School DxD crossover.

A few Points I want to make known before you read any further.

1. The first few chapters will not have any main characters from the anime, books, or the manga(I think, I have not read the manga and I am currently working through the anime so bare with me) since these chapters are prologue and world building.

2. One thing that does not make sense to me about Dxd is how the three factions had never been at peace, until God of the Bible died, and since then been in relative peace. Because it does not make sense to me I got rid of that idea, but that is not to say they are all best friends.

3. God of the Bible is a stupid name. Simply put it would only have been his name for a few hundred years, max of four thousand if it started with Abraham. For this reason his name will be Khan or Ruler, in part inspired by the Khan family in ancient China.

4. Khan does not die, he is nearly a true immortal and thus when he gets close to dying he stops before using all his energy. However when Harry does appear in the Story Khan is still in an Odinsleep like state.

5. This will be important to know later, but it is more College Dxd not High School since Harry will be killing Tom before he goes to Kuoh, and yes Harry is going to be OP, sorry, I am not letting him steal powers though (Boosted gear is a special story which is explained later)

6. I don't care for Issei, but he is going to be depicted more as a childish fool in a lot of ways, he will still be part of Rias' Peerage, but only be a 3 pawn member not eight sorry, not sorry.

Hope you all enjoy, please review, and any help is appreciated

Lord Vidar Odinsen

8000 BC Dimensional Rift

"I grow tired of this war, Brother, is there no way for us to end this conflict between my servants and our younger brother?" A dark-haired man bearded man asked a large dragon.

"That depends on you Khan since Trihexa overthrew and killed Satan, the remnant of his children have been willing to make peace, if you aide them in locking Trihexa away," The Dragon spoke calmly.

"I had not known that, for if I had I would have sought peace well before this point, is there any way you or our sister could help me set up a meeting between myself and their leaders?" Khan asked calmly.

"I shall ask Ophis is she will be willing to arrange a meeting, but I will not allow it to exist in this dimension, nor would Ophis allow you to have a meeting in the Dimensional Gap, perhaps you could have the meeting in Heaven," The dragon said calmly.

"I will not allow any of Satan's children into my dimension, they will pollute it," Khan said angrily as a young girl appeared.

"I heard you mention my name Red, what's going on with Khan here?" The girl asked kindly before noticing Khan's solemn expression and changing her appearance to a middle-aged woman.

"Ophis just the person I wanted to see, Khan wants the war with Satan's children to end but will not allow his children into his dimension, so I was not sure how we could have them meet," Red the dragon said simply rolling his eyes.

"Funny that, the four leaders of the Resistance to Trihexa said basically the same thing, but they offered to free part of Hell that is closest to Heaven to create a half dimension, if Khan agreed to do the same then a new dimension could be created, thus bringing it up to seven realms instead of six," Ophis said calmly.

"Six dimensions, since when has there been six dimensions, last I knew there was only the five?" Khan said in shock at the revelation.

"Wow, I knew you were busy, but I did not think you were stupid and oblivious, once Trihexa killed Satan, he created his own dimension, which is where your war has been existing, I would have thought you already knew that," Ophis said after smacking him.

"But where does this realm exist then, I had thought the war had been in the void?!" Khan said in shock.

"Like Chaos would allow that to last that long, no Trihexa broke a small section off of her dimension and about a third of Hell to create his own Distortion Realm, as he calls it, which is where there are beings that look nothing like Chaos, who we based our forms off of, or Red here," Ophis said rolling her eyes at her brother.

"Now Ophis, Khan has been busy, and I grow tired of this conversation, Khan will you do as the Resistance asked and create a realm that is between your realm and hell?" Red asked in a bored tone.

"Very well, I will do so and we can come together to create a deal to end this war," Khan said after a few moments of deliberation.

"Good then, I think to make this new dimension stronger, as it will not have an avatar perhaps Ophis you could talk with Chaos, and see if she will give a piece of her dimension to this new dimension and I will do the same," Red said causing Ophis' eyes to go wide.

"You would give up part of your dimension to creating a new dimension?" Khan said the words which Ophis was clearly thinking.

"Indeed, I too grow tired of this war against Trihexa and hope by creating a central dimension we could have some peace," Red said calmly.

"Oh and even better is that if you did that then no one would have to cross my dimension to come to see you, I will do the same so it makes it somewhat easier for my own movement across dimensions," Ophis said with a smile.

"So this dimension will be a gateway dimension then, I think that will be most wise," Khan said before vanishing from the Dimensional Rift.

1000 years New Realm.

"Well that took much longer than I had hoped, but it is done, but I will never do this kind of thing again," A fair-skinned woman with a set of reptilian and a set of avian wings on her back said with a sigh.

"Indeed Chaos, now Khan, children of Satan here is your new dimension for your war, what shall it be known as?" Red asked calmly looking to Khan and four smaller beings with a form similar to Chaos only having just reptilian wings.

"Midgard, or Gateway, as that is what this realm shall be, a gateway between realms, lady Ophis even managed to take a piece of the Distortion Realm and add it to this realm making it a passage between all the seven realms," Khan said before a large Black Dragon appeared being followed by numerous concourses of monstrous being.

"Indeed, and none of you invited me, so I think I shall take this entire dimension and make it my own," The Dragon said with a smile.

"Brother, we had not known you were coming," Chaos said coldly glaring at the Dragon.

"Well dear Sister, you should not be surprised being that Ophis stole from me," The dragon said coldly glaring at Ophis.

"Though to be honest Trihexa, you are a fool, of course, we knew you would come to this meeting, which is why for the past thousand years we had been building our forces and taking so long to unite the six dimensions so we would be ready to remove your stain as you did to our father," The four smaller beings said coldly.

"Oh yes, the foolish children of Satan, if I recall correctly your names are Leviathan, Beelzebub, Asmodeus, and last but surely not least Lucifer, how are you four doing today?" Trihexa asked with a grin which quickly changed to one of fear as Khan started to chant.

"We are doing well, we just cannot wait until you are removed from the very fabric of existence," One of the four said as the other three started to chant with Khan.

"No, I cannot be destroyed, I am almighty, I am Trihexa the Destroyer," Trihexa said as his form started to shrink and his army started to be attacked by beings like the four who had just spoken and ones similar only having avian wings instead, while the last of the four started chanting.

"Your right you know brother, you cannot be destroyed, you never created a race with sentience enough to replace you as the ruler of your dimension, as Satan did. However not being able to be destroyed and not being able to be beaten are two vastly different things," Ophis said as she entered the room and placed chains on the dragon before she, Chaos, and Red all left the room, as Trihexa found himself unable to move his body outside of his eyes.

Outside the room a war like no other in all of history was occurring, the avian winged, and reptilian winged fought against the abominations that were trying to attack the sole world in the new dimension and disrupt the chants that were being done that kept their master bound. However while this battle it was nothing like the scream that was let out 100 years later as the building collapsed, revealing five beings standing, who those fighting could barely recognize, due to their bodies looking worn away almost completely, and two new beings laying on the ground, Trihexa not being anywhere in sight.

"I assume it is done?" Red asked as he landed near the wreckage of the building and looking to the five emaciated people.

"Yes, Red, I did not know it would take so much to bind him," Khan said weakly.

"I truly had no idea that it would take such a cost from you either, it does not aide any of you either that your forces were severely damaged, I believe it would be safe to say that had I not created Dragons to aide in the war all of your forces would be destroyed and his forces may have destroyed the ritual," Red said sadly.

"What of the forces of the Distortion realm, how many remain?" The last of the five to speak to Trihexa asked barely making out the words.

"Lucifer, with the aide of my Dragon's who shall remain in this realm, the combine forces were able to eliminate the entirety of his forces, at least those he brought and all who we could find in the Distortion realm," Red said before seeing Chaos fly down.

"I am glad that we managed to put down Trihexa's threat before it became any larger, are these the Keys?" Chaos asked referring to the two beings who looked like her except not having any wings.

"Indeed, a cross between the Children of Satan and myself, we call them humans, and this world shall be there home," Khan said as he stumbled.

"Are you sure that is wise, this world is his prison as well," Chaos reminded him.

"I know sister, but if they go to any other dimension then there will be further strife, as one will hold the fact they hold the Keys over the other factions, it is best they remain here, once we recover we shall make the world hospitable for them and set to live," Khan said as he sat down on the ground.

"How can we be sure the keys shall not simply go and free our brother," Ophis asked as she landed.

"For that reason, we made the two keys and added an extra piece to the key's use, the keys can only be used by one working with both the children of Khan and our own kind, and if one key frees him, the other key will be able to rebind him with less effort than we needed to exert in this binding," Lucifer said as he too sat down.

AN: I will likely also post this on my deviantart account Lord Odin Haraldson