This is Shidou Haruka again with my third attempt at a RWBY/DxD crossover. This time I'm sure I got it right because I properly planned this (somewhat) unlike before. This time I decided to do something different from what I previously tried.
Chapter 1: Renewed Legacy
A long time ago, long before the time of the Kingdoms, of Grimm, or Remnant, there was Earth. Humanity thrived throughout the planet and their civilization flourished. It was a time of peace and prosperity. But they were not alone on earth. Living in the shadows, among humanity, are youkai, monsters, devils. angels, heroes, and gods. These beings are part of a world much larger than what humanity knew, the supernatural world.
After thousands of years of conflict, not only humanity but also the supernatural world finally could experience true peace without conflicts. Devils have changed after overthrowing their previous leaders in a long civil war and made peace with Angels and Fallens, their long time enemies. Gods stopped meddling in the affair of humans and became much more friendly. Youkai and monsters at large no longer terrorize humans as much as they used to. It would've been a start of a golden age of peace.
But it was actually a prelude to conflict, a calm before the storm, because while many people, humans and supernatural alike welcome the peace, there are just as many that wanted to see the peace destroyed. Using the power of Ophis at their disposal is an organization known as Khaos Brigade, a terrorist group aiming to destabilize the hard-earned peace.
Individually they are no match to the combined might of the world and factions that support peace. But with the Ouroboros Dragon on their side, what should've been impossible became possible. Chaos spreads throughout the world as Khaos Brigade began their campaign. But of course, those who desires peace would not stand to see their hard work became undone.
Both sides fought each other in a fierce war. The combined might of all Khaos Brigade backed up by Ophis took so much life both on the human and supernatural side. Continents were razed and shattered. It was a war much more horrifying in scale than even the Great War of the supernatural world and the two World Wars combined. It is truly the War of Wars, an apocalypse.
But just as the Khaos Brigade and the peace faction reached a standstill with many of their allies and enemies slain, a much greater plot was unveiled when one of the factions of Khaos Brigade splintered themselves and formed a new faction after staling three quarters of Ouroboros' power.
Thus rise Qlippoth led by Rizevim Livan Lucifer who revealed that he had orchestrated all of this chaos to gather power. He then uses Ophis' power to push back the other factions. Finding a common enemy in Rizevim, the remnants of the broken Khaos Brigade joined with the peace faction because they have no other choice. Thus enemies became friends and friends became enemies
Rizevim though made a miscalculation. He moved too early and he forgot that a cornered animal would lash out strongly. In a major offense conducted by the peace side, Rizevim was slain by his grandson, Vali Lucifer, and the Sekiryuutei, Hyoudou Issei, at the cost of so many lives to take them there, including the two's own friends and families.
But unfortunately, that was not the end as Rizevim had made a deadman's switch where if he dies, the greatest monster known to mankind would be unleashed. Just as Rizevim's life ended, the Apocalyptic Beast, Trihexa, was released. Rizevim offered the stolen power of Ophis to Trihexa, empowering it to a level that cannot be imagined. Great Red was defeated by the empowered Trihexa and everyone and everything dies slowly as the Beast destroy everything it sees.
One by one, every living beings opposing it were slain. Not even the combined might of the mythological factions could stop it. The Maou were crushed, the Seraphs were burned, the Cadres were eaten, the Youkai lords were annihilated, even gods don't stand a chance against the Beast… though they did manage to do something.
Before he died, the leader of the Fallen Angels made a device and plan to reclaim back Ophis' power. Ophis who then had become attached to both Vali Lucifer and Hyoudou Issei promised to help them and she is the only one left that has a chance against Trihexa.
They succeed. Not entirely but they succeed in retrieving half of the stolen power. It might not allow Ophis to defeat Trihexa but it is enough for them to attempt something. But without the leaders of any factions left alive, the mythologies fell one by one. Eventually, the main system that governed the world, known simply as The System, located in the Biblical Heaven fell entirely to Trihexa. At this point, magic began to weaken. Everyone started losing the power to fight and every supernatural being with a few exceptions fell sick without a System to support their existence. Eventually, only the humans are left.
Those who were previously reincarnated into supernatural species discarded their reincarnation items. Reincarnated devils sacrificed their evil pieces and reincarnated angels throw away their cards. Everything is now in the hands of humans, and things look bleak.
But one last hope exists in the form of the Longinus, a relic left behind by God of the Bible and part of the Sacred Gear System, a gift meant for humanity. After the fall of the Supernatural world, many sacred gears began to malfunction and even disappear entirely, including the new Longinus. But the Thirteen Original Longinus survives.
Cao Cao and True Longinus, Dulio Gesualdo and Zenith Tempest, Georg and Dimension Lost, Leonardo and Annihilation Maker, Vali Lucifer and Divine Dividing, Hyoudou Issei and Boosted Gear, Regulus Nemea and Sairaorg Bael, Ikuse Tobio and Canis Lykaon, Valerie Tepes and Sephiroth Graal, Lint Selzeen and Incinerate Anthem, Lavinia Reni and Absolute Demise, and Mitsuya Kanzaki with both Innovate Clear and Telos Karma. Valerie Tepes, Vali Lucifer and Sairaorg Bael, despite not being humans, survived by fully assimilating themselves with their Longinus.
Thirteen Longinus and Ophis, these are the last hope humanity have against Trihexa. But even they knew that Trihexa cannot be defeated by their combined power. That doesn't mean that there is nothing they can do. Humanity is not the type to give up unless none of them are left standing on their two feet.
In a last ditch effort, to let the planet survive, the Longinus and Ophis lead Trihexa to the moon where they will have their final showdown. As the Longinus empowered by Ophis all fought Trihexa, four of them stood in a formation on each corner of the battlefield. These four are Sairaorg Bael, Valerie Tepes, Georg, and Kanzaki Mitsuya. Ophis herself floated over the battlefield, watching the battle with sad eyes, an emotion she learned during her time with the Longinus.
One by one, the Longinus fell. But none of them die without carving their name into Trihexa's body. They all fought with everything they have, surpassing the power of the strongest gods and maou in that instant. They are the greatest champions the world had ever seen. But unfortunately, their enemy is also one-of-a-kind monster. Eventually, apart from the four who made the formation, only the two Heavenly Dragons and Dulio Gesualdo are left… but that is enough.
Valerie Tepes yelled. The time has come. The Two Heavenly Dragons went full Juggernaut Drive with even their seniors helping them. The cursed power transformed into a blessing as the two Heavenly Dragons return to full power and then some more as they kept the monster in place.
The four who did not fight are preparing a seal, the most powerful seal in existence, one that will seal Trihexa for fifty millenniums. Using the combined power of their Longinus and an incredible amount of life force supplied by Ophis, Trihexa was sealed.
Of the Thirteen Longinus who participate in that battle against Trihexa, only one survived. Dulio Gesualdo descended alone from the shattered moon, a proof of their victory and the price they have to pay for it. And thus start the age when Earth became Remnant.
-Nearly fifty millenniums later-
A single girl with long blonde hair wearing a white dress is floating in a space made entirely of light. She is currently reading a book, but it is not an ordinary book. If one were to see the contents of the book, they will not see words but images much like watching a tv. With every flip of the page, the images change, showing different events.
She closed the book and sighs. Once the book disappears in motes of light, several spheres of pure light approached her. They began to flicker inconsistently and it causes the girl to sigh again.
"I know. Things are not looking good on Remnant."
The girl said as if she is holding conversation with the light, and she might as well be doing so. The lights continue to flicker as if responding to her words. Whatever the light was telling her, it causes her to frown.
"We really don't have much time but Ozpin is not showing any signs of winning against Salem."
The girl replied. The lights flickered again.
"A broken hope cannot win against despair… but what if that hope is not alone? Wait, are you suggesting that we actually go through with the idea?"
The girls' eyes went wide as the lights flickers uncontrollably. The girl then frowns.
"True. We can only last for another fifteen years at best. But is it worth gambling with uncertainty?"
The lights answered her. But this time, instead of flickering, the lights merely floated in place like they are staring at her. The girl suddenly chuckled, though her voice held a hint of bitterness in it.
"Hehe, I suppose that's right. We have been preparing for this for some time. It would be a waste to have second thoughts now. Our situation was always hopeless but we try anyway. We have two shots at most. Let's make the most of it then."
The lights floated up and down as if nodding. The girl smirked and held out her hand. A grail then appear on her outstretched palm. She felt her power stretching across the dimension of light and touched 'something'.
"I don't know if I am fortunate that Sephiroth Graal helped me retain my form and consciousness but it is certainly useful in this situation. I wonder if God had considered something like this happening when He created the Longinus?"
The girl wondered. She then shook her head. She has something to do right now and it has been millenniums since she last used the Graal directly like this. She then felt a powerful presence above her. She looked up and saw a sphere of dark light hovering above. A symbol of infinity appeared on this particular sphere and the girl felt her power rise even further.
"So you want to bet too, Ophis?"
The dark sphere 'nodded' to the girl.
"Everyone is in agreement. This is a gamble but… I suppose we have no other choice."
The girl closed her eyes and smiled. When she opened her eyes once, instead of normal eyes, the pupils had become slitted and are glowing crimson with power.
The girl, Valerie Tepes, then spoke two words she had not uttered in thousands of years.
"Balance Break."
-Remnant, Vale-
A beautiful girl with long blonde hair and blue eyes wearing a sleeveless white gothic dress that has knee-length skirt that emphasize her sizable bust with fingerless long white gloves that has a diamond shaped crystal on the back of the hands parried a sword thrust aimed at her with an elegant-looking rapier. Despite her attire that would've been more suited for a party than combat, Valerie moves well in them and is more than a match against any of her siblings.
"Come on Jaune, just a bit more."
Valerie Arc said in a teasingly to her only brother. A boy with scraggly blonde hair and blue eyes wearing a set of armor over a black hoodie and a pair of jeans is defending against Valerie's rapier thrust with his shield. Despite her slender and elegant frame, the second oldest Arc sibling surprisingly packed a large amount of punch as the boy was sent skidding backward from a strong thrust.
The boy, Jaune arc, panted a bit as he fixed his stance, preparing for another attack from his strongest sister. Despite wielding the thinnest and most fragile-looking weapon, Valerie Arc is known as the strongest of the Arc siblings even without the use of her semblance which she rarely used to its full power due to reasons.
She has the largest pool of aura even among the Arcs who are well known for their large aura pool and hers is still growing. And her control over her aura is very high as her enhanced strength and defense had proven. Despite her lithe frame, she packs the second greatest punch physically among the siblings.
She is also fast. While not as fast as Jeanne Arc, their oldest sister, Valerie is quick on her feet and very elegant, moving with grace and flexibility that made her extremely hard to hit. Jaune had learned that he needs patience to be able to score a hit on Valerie.
"Do your best Jaune!"
One of his sisters, another blonde girl with long hair and blue eyes cheered. Unlike Valerie, this Arc sister has a more petite form, looking more like a child than her supposed age, which is seventeen, the same as Valerie and Jaune. Her name is Asia Arc, the youngest of the triplets which consists of herself, Valerie and Jaune with Valrie being the oldest triplet. She wore a school uniform like Valerie but different. Hers consists of a white long sleeved shirt with a black ribbon, a corset, and a brown skirt.
"Jaune still sucks."
Another girl commented. She wore the same uniform as Asia but unlike Asia and Valerie, she has white hair instead of blonde and her eyes are yellow. She also has a pair of cat ears on her head. Her name is Shirone Arc, fifteen years old cat faunus adopted by the Arc family several years ago. She is sitting beside Asia with a bored look while munching on a bread.
"Don't say that Shiro. Jaune is still improving. Do your best bro!"
Another sister cheered and this time she does have the Arcs' trademark blonde hair that curls inward but with green eyes instead which came from their mother. She is the youngest of the siblings currently present, being fourteen years old. She wore a cream colored blazer and a checkered skirt, another different school uniform, but added with a cape and a pointed hat that made her look like a wannabe magician.
Her name is Le Fay Arc, youngest of the currently combat capable Arc siblings with only two other sisters who are younger, one being only seven years old and the other only fifteen months old.
Hearing his sisters cheering him gave Jaune a new vigor. He ran at Valerie who thrust her rapier once again. But he parried it aside with his shield and follow up with a slash from his sword. Valerie easily dodged the first slash and blocked the following uppercut with her rapier.
Suddenly Jaune rushed her with his shield while they are still in close proximity and she was knocked back. Jaune followed up with a slash when she was disoriented but she leapt back, putting some distance between them. She then dashed towards him with a speed he cannot follow and sent him skidding back with a powerful thrust of her rapier.
Valerie followed up with another thrust but Jaune suddenly glowed. Her next thrust was blocked again by the shield but this time Jaune did not even stagger. The boy smirked as he parried aside Valerie's rapier and thrust out his sword.
The second eldest Arc though is not ready to lose. Faster than the eye could see, Valerie spun and kicked the sword with her aura enhanced legs, sending the sword flying from Jaune's grip. Her brother looked at his hand in surprise before he was knocked down to the ground with a follow up kick.
Jaune groaned and look up at his sister who had sheathed her rapier. Again, he lost against her just like usual.
"Ohh man, even after all those training I still couldn't land even one solid hit on you."
Jaune whined. Valerie chuckled and offered him a hand. Jaune took her hand and she pulled him up. The boy then folded his shield back into its sheath form and retrieved his sword. Placing the sword back into its sheath, the two of them went to sit down with the rest of their siblings on the front porch.
"You have improved nicely from the time when we started."
Valerie said
"Really? I don't feel like I'm improving much."
Replied Jaune who took the bottle of water offered to him by Shirone.
"No, you have. Remember back when we first started you always got sent flying whenever I put enough strength to my thrust. Now you can at least stand your ground and counterattack as necessary. You can even stop my thrust and parry them."
That's true. Compared to when he first started, Jaune can see some of his improvements showing. But it is still not enough. Compared to his sisters, he still has ways to go, especially when compared to Valerie.
"I'm still nothing compared to you though."
Jaune said.
"Nonsense. You got accepted into Beacon. That means you are already something. Baby steps Jaune, remember. Vale was not built in a single day."
Valerie replied, making Jaune smile.
"Yeah I guess you're right, baby steps."
"Speaking of which, Jaune, have you packed yet?"
Shirone asked. The only male of the eight siblings paused to look at the white haired faunus. His eyes then widened as he got up and ran into the house.
"I forgot to pack!"
Jaune yelled as he ran up the stairs towards his room. All the siblings sighed at their brother's usual antics. Valerie shook her head in bemusement and then smiled as he looked at her sisters chatting with each other. She then looked up at the sky and closed her eyes, enjoying the breeze brushing against her face.
This is what she returned for. This is what she will be fighting for.
So I started things off with the introduction of the Arc siblings which consists of many familiar DxD characters. The main protagonist of the story is Valerie Arc, formerly Valerie Tepes. She is the only reincarnated character to remember their past life, well, the one who won't need their memories jogged at least. Valerie is currently the character with most raw power outside of Salem as she is born with magic and a powerful semblance. She does not possess the full power of Sephiroth Graal though and at most can only use a fragment of its power since most of it was left to maintain the seal. She still has connection with the seal through the Grail she kept, which is one sub-grail.
While Valerie will be very strong early on, this is only temporary. Once Salem knew of her reincarnation, you can expect the enemy side to answer the challenge properly. Ohh and before that, the majority of the Longinus that are not part of the seal are now in the hands of RWBY characters. Something did went wrong with the distribution when Valerie enacted the reincarnation. Shits happened because of the System's destruction.