I do not own DxD and RWBY.

-xXx-

The night is cold at the same time humid. The unbroken moon, the domain of many gods but a creation of God hung fully in the night sky and offer little light to those below.

Its glow reflected beautifully on the calm sea and cast much-needed light on the single rowboat in the middle of nowhere.

On the boat were two young men, one blonde and the other albino. Both wore black coats, and white pants, and has a cross hanging on their neck, but the blonde's coat looked thicker and had a dark red lining, a red sash with bronze cross patterns under his two belts, and a symbol of two crescent arcs on the sleeve of his coat, wore a pure black shirt and has a light scar near his eye. His blonde hair is combed into a wolf tail.

The Albino wore a simple dark grey shirt with some black lining and a gold accent over his coat. His white hair framed his face. His coat also looked stuffed, as if there are so many things hidden in his coat.

They just arrived at their destination for their work to begin.

"So, can you sing?" Jaune asked

"Why not just play music from your phone?" Sieg asked, "you don't need a live song to attract mermaids."

"Yes, but we are talking about a wild mermaid; it is not attracted to a song, but to helpless prey who happens to sing on its territory." Jaune signed as he unsheathes a silver blade adorned with simple engravings of the 12 Apostles.

"I don't sing unless you consider the sound of my blades singing, then I don't." Sieg said as he looked around for their possible hunt, "why don't you sing?"

Jaune merely sighed and cleared his throat while also preparing himself for embarrassment.

"Mirror, can you hear me?" Jaune sang

"Well, isn't that out of tune?"

Jaune ignored his companion and scanned the water with an analytical eye.

"Tell me something."

A simple splash was heard as both snapped towards it, seeing only rippled water.

"Tell me who is the loneliest~" Jaune held his sword tight, "of all~"

Sieg grabbed Gram and stood up in a fighting stance while Jaune remained sitting as a giant fight head peaked out of the water; the head of the common mermaid.

"Mirro-"

Suddenly, a hand with claws burst out of the war soaring straight for Jaune. Jaune slashed it to defend himself, but both were unprepared as a canine-like beast burst out for the other side of the boat and tackled Sieg to the water.

Jaune would normally worry for his friend, but he was too focused on something on the water.

Upon further inspection, the mermaid's head was rotting in seawater, and the beast shook its head to take it off like a mask or a hat made from organic materials.

The beast was literally in sheep's clothing, but only using a dead mermaid's head.

It looks like a dog with a tiger's head, but it was very thin, almost like it looks like it was starving. Dark brown fur, and a tail with a bleeding hand attached to it.

"Shit" Jaune frowned deeply as he got into a low stance to balance himself on the boat. The waters were calm except for the surfacing of bubbles where Sieg fell.

The beast stared down at Jaune, almost trying to instill fear into Jaune like he was trapped prey.

It was true, stuck in a boat with nowhere to run.

The beast seems to smile. It lashed its tail like a scorpion out at Jaune for a surprise attack!

But unexpectedly the tail flimsily flew right past him with little coordination. It suddenly fell on the boat beside Jaune.

The wound Jaune inflicted on it continued to bleed as the surrounding skin darken. The beast tried its best to command it to move, but it only rose for a moment before limping back to the boat. In fact, it couldn't feel the wound, only the tinging pain running through its nerves. The silver already killing the limb at a cellular level, akin to a virus.

It didn't even feel the hand of Jaune grabbing to it tightly and pulling the beast unto the boat.

The beast land rashly on the wooden surface as the water slashed and the boat rocked.

And before it could lash out, it only saw cold blue eyes looking down on it, like the abyss of the ocean itself staring back at it, ready to drown it.

The incredible pain ruled its world as Jaune's silver sword stabbed through the beast's heart and cut its spine.

The beast didn't even have the time to think as Jaune twisted his blade, cracked its rib cage, and harshly yank out the blade, ending the beast's life.

Blood soak the silver sword, until Jaune placed more aura into it, forcing the blood to fall out of the blade like water, making it clean as new.

Jaune observed the now-dead beast. Its wounds are now surrounded by darkened flesh. And if he does not burn it in time, it will decompose on the boat.

But looking into its eyes, Jaune felt like he has killed someone's dog or at least a wolf hunting for its pack. Unlike the Grimm he knows where exactly it was from and just fades into ash once killed, he always has the displeasure of watching the corpses of his hunts.

Back at the water, the surface suddenly bubbled harshly, and steam came out. Not a moment later another beast of the same kin floated to the surface, dead and harshly burnt. Although it looked badly damaged, Jaune took the initiative and drew his pistol.

*BANG BANG!*

Two rounds hit the head of the beast, but it didn't move and continued to float dead.

Then Sieg broke out of the water grasping for air.

"Bloody hell." Sieg swam to the boat, "it was not a mermaid that the witnesses saw."

Jaune pulled him out of the water with little effort and into the boat now carrying blood.

"Yeah." Jaune nodded and looked back at his kill. "What are they doing all the way here in the Caribbean?"

"Migration?" Sieg guessed

"Well… that is a logical answer." He then looked back at the floating corpse on the sea, "C'mon. let's get back to land."

It would take around two hours for both hunters to finally reach shore, wet and tired.

They forcefully pushed the boat to land and into the opening of the forest.

Opening a bag Jaune carefully poured white power over the two corpses, the head, and the blood on the boat. The powder coating everything on the boat as it seems to vaporize a bit.

Lighting a match and tossing it to the powder, it lights up brightly making a pseudo flashbang as the boat burns brightly like the morning sun.

Flesh sizzled and wood burned. The duo watches their kill quickly turn into ash as Jaune pulled out his phone.

"Status Report Layman Jaune."

"We have killed the monsters infecting this town, Sir. However, I must report that we were not dealing with a wild mermaid, but an Ahuizolt."

"So, it was disguised as a mermaid. But what is it doing in the Caribbean?"

"We speculate that it migrated, Sir."

"Well, it is not far from its natural habitat. Anyway, please make sure the corpses are ash and get back to Rome, ASAP. We have a mission specifically for you."

"Yes, Sir." The line died as Jaune saw the dead monsters now ash with the boat, leaving no supernatural evidence.

"Let's go," Sieg said.

-xXx-

The elevator dinged out as Jaune marched into a nice room that looks like a cabin. Even though they are technically in the Vatican headquarters, the room they entered made them feel like in Norway or Scotland with the wood interior, harmful light, a fireplace, and the dozens of heads of monsters hanging by the walls like a trophy.

Jaune walked in and entered through a door to enter a cozy office. Behind the desk was the man who recruited him and his former master.

"Father Creston."

"Layman Jaune." He looked up from his papers, "I take your last mission was easy?"

"Easy for our standards? Yes." Jaune replied.

Suddenly Jaune receives a tackle hug behind, feeling gloriously soft and big breasts squishing on his back, or would have been if he didn't have the familial filter.

"Jeanne."

"Jaune! I missed you so much!" Jeanne hugged Jaune tighter as she hung by his shoulders.

Jaune returned the affection by rubbing her forearms before she let go of him.

Jeanne d'Arc, Joan d'Arc, or simply Jeanne Arc has grown into a beautiful woman. Slim, yet strong and mature frame, no baby fat, and the confidence of an honored soldier.

She wore a black coat of Jaune but only she wore a purple-grey blouse and a maroon combat skirt reaching below her knees. Her black corset is the same type as Pyrrha's where she ties it from behind and has the symbol of St. Joan d'Arc's symbol on the front and the Arc symbol on her sleeve; acknowledging that she is the reincarnation of St. Joan and a proud Arc!

She has a light scar below her lips and wore her pigtails! But what frustrates her even today, was that she was still a head shorter than her brother!

What concerned Jaune is the weird physics of this world where clothes "naturally" cling to a woman's shape as if it is wet 24/7 or acts like a second skin. He had a fair share of staring at the nuns who of course are chaste, but their clothes say otherwise. No amount of Yang's, Black's, Neon's, Emerald's, or Neo's fashion could prepare him for that.

It is honestly Yang's and maybe Neon's dream so that their fashion can enhance their shape too, but Jaune is concerned about how Jeanne is too, "revealing".

"How was your tour?" Jaune asked

Jeanne made a frustrated noise, "it is so annoying! They gathered all the Holy Maidens and just display us around like we are some girl band! I do some party tricks with my blades and everyone will praise that it is a miracle of God," she sighed, "don't get me wrong, it is the miracle of God, but I rather use it to fight than to show it off!"

"Are there plans for another tour?"

"OH yeah there is! I had to use my status as a Monster Hunter to get them off my back. They then cried that 'it is for the glory of God and such. Some even tried to coax me to be an exorcist again!"

"You know you can take stray devil missions, right?"

"Yes, but c'mon there are almost a hundred Holy Sword users, be it the mass produce Light-swords, the lesser Holy Swords, the Fragments, and many holy relics the churches stored; I rather use the versatility of my Sacred Gear to make Silver Swords to hunt monsters! And the Underworld, both the Fallen and Devils also hunt these Strays"

"Good, because I have a mission for you two to attend ASAP." Father Criston then gave them a folder and Jaune picked it up, "there has been some supernatural activity at a rural village in Germany, the usual reports of missing persons and such."

"Then why does it need specifically us?"

"Because the one who reported it to us and begged for our help is a magician."

Jaune looked up from the folder with a frown.

"They require a specific set of skills, or rather they asked for someone of your reputation, Jaune, and Jeanne is just supplementary support for worst case scenario."

"And this is not a trap?" Jaune asks with much suspicion.

"Have no fear, we have contacted the organization the magician works for, and this mission is something they have been cracking for months: from what they can tell me is that a group of stray magicians has been experimenting on something dangerous."

Jaune doesn't know how to feel about that. The last time he works with and against users of magic was in his last life, and how much of a hassle Salem and the Maidens were, he knows now why they specifically need him.

Jaune frowned as unpleasant memories for certain magic users rose.

-xXx-

One of the things that Jaune will always appreciate about Earth, is its hundreds of countries and cultures within. Remnant only had 5 Kingdoms, and 6 unified states if you want to consider Mattle separated from Atlas. Although his old home has different cultures, there were never that deep.

Like right now. The wooden cottages of the village, some loose rural clothes, and the language make you feel like you are in a new world, unlike Remnant where the cultures are almost too similar to each other without further expansion to their own respective cultures.

Like how the Chinese and Japanese use chopsticks, but individually there is a respective meaning to chopsticks per culture.

The village right now reminds him of the dozens of villages of Vale but has its own identity.

Jaune and Jeanne walked on the cemented road with each carrying a big briefcase in hand and Jaune was carrying a military knapsack.

They caught the eyes of many since you don't normally see a who they assume is a priest and a nun with a lot of baggage just simply working in their remote and humble village. Or at least that is what the twins believe.

Men young and old ogled on the beautiful Jeanne with her blonde hair and sinful body, fantasying about some very blasphemous things in their heads. While the maidens and MILFs were pleasantly surprised to finally see a hunk who is dressed like a priest.

"Excuse me, do you know where the pub is here?" one MILF snapped out of her trance as Jaune asked her a question in German.

"Oh, yes. It is right there by the corner." The woman said with a coy smile, "I might go there soon for a drink, but I am alone since my hus-"

Jaune drowns out the remaining of that sentence as he internally lets out a sigh. Here and back in Remnant, the thirsty MILFs still plague his life. It is a good thing it is only happening now.

In the different corners of the Multiverse, multiple Jaunes with different ages and circumstances sneezed.

"So, you think the magician will be there?" Jeanne asked as they moved to the pub.

"Well, maybe. We just must find a person who is wearing a witch's attire." Jaune said as he prepared to meet this witch.

Upon entering the pub, they saw a humble interior made from wood and beer mugs all around. They were expecting to be the center of attention again, especially due to their positions as a priest and nun walking to a bar. But none paid mind to them as their attention was to the white witch sitting on the corner.

Walking to the table Jaune was surprised to see that she as blonde hair and blue eyes like him. But oh Brothers, she is fitting for a model. Tall. Slim. And Buxom with delicate eyelashes and snow-white skin.

Her outfit is that of a witch, only white, her dress is tight fitting and has an exposed underboob to expose her black shirt beneath the dress and her hat is too big.

When the witch looked up at them, she beamed and abruptly stood up.

"Finally, you are here!" she beamed, "I take it that you two are Jaune and Jeanne Arc?" said in Latin

"That is correct, and you are Lavinia Reni from Grauzauberer?" Jeanne replied in Latin

"Yes! Come and sit! We have much to talk about."

"Sure, however" Jeanne looked at Jaune

"I am Layman Jaune, I am not a priest yet." Jaune said with a sheepish smile, "I won't be sure if I don't seek a partner before I take an oath of celibacy."

Drinks were ordered as the ladies decided to go for beer and Jaune had a glass of the available hard drink.

"So, what is this about?" Jaune asked without even sipping his drink.

Lavinia first took a dainty sip of her drink and said, "Well, how do we start? There is a group of Stray Magicians on the lose called the Hexennatch; they perform some outrageous experiments with no ethical consideration and often their workout balances the power of the world." She took a sip of her beer, "my organization both the Grauzauberer and Grigori has the displeasure to fight this group from the past."

"You know we are forbidden to work with the Grigori, right?"

"That is why I am representing Grauzauberer, not the Grigori."

Hmm… politics.

"The Hexennatch has been working on the modification of humans in the past, that is already dealt with, but we have recently received info that they are working on genetic mutations again."

"And you need us?"

"Because they are genetically modifying monsters, more specifically, vampires."

Now that got the attention of both.

"I see, so why just request for your average exorcist? Vampires are extremely weak against light." Jeanne asked

"Modification" Lavinia emphasized

It didn't take long for both to connect the dots and realize what is happening.

"Dear God," Jeanne said in horror.

"Yes." Lavinia said seriously, "we must destroy this research before things can get extremely out of hand. And another incentive for you is that humans are disappearing left and right for this experiment. Whether they are used as testing subjects or cattle, we don't know."

"So, what else can you tell us?" Jaune asked seriously.

"They are working to be immune to light and holiness." She then looked at the hilt of Jaune's sword by his hip, "and that they are only generally located here. We can't pinpoint their location, and that is where you, Jaune Arc, the Silver Huntsman come into play."

"You need a tracker, and me being a silver sword user is just a bonus."

"That, and that you are renowned for hunting beasts." Lavinia smirked, "your reputation proceeds you."

"I didn't even know that I have a nickname."

"Well, honestly, most organizations will just merely scoff at your work since they believe you just need to blast magic on monsters to win, and the Vampires do not recognize themselves as monsters. However, the Grigori, the Devils, and Monster Tamers have their eye on you, especially when it is concerned with their familiars and your efficiency in killing them." She finished her beer. "By the way, have you killed a griffon?"

"Well yeah, they are relatively easy to kill" Jaune replied. Sounds boastful but he faced a swarm of Grimm Griffons in Remnant, the Earth's Griffons only hunt solo.

"Hmm… have to warn Natsume about you." She whispered, "Anyway. I know someone who has a lead and he lives not far from here.

Jaune stood up and for the first time, drank his drink in one shot. "Let's get this over with."

-xXx-

Not far from their destination. If you consider miles of trekking in the middle of the plane lands and forest as "not far".

But Jaune paid little mind to it trekking in these kinds of wood during the day remains him of his journey with Team RNJR; enjoying the scenery, the air, and the conversation. He can also finally see the herbs and berries around and forage them.

The warm sun, the fresh air, the smell of earth. All of it without the adrenaline when fighting a battle feels nice and peaceful.

"So, you have your team?" Jeanne asked

"Yes, we are called Team Slash Dog, named after our leader the current possessor of a Longinus," Lavinia answered

"So, why are they not here? Seem handy to have a Longinus by our side"

"Well because the team is associated with the Grigori, which we know you are forbidden to work with; that is why I am doing this alone, but trust me, my team would like to join this trip very much."

It is not long before they spotted a cottage surrounded by a stone wall and a lot of bushes. Horses, cattle, and goats were seen grazing on the grass peacefully. "We are here," Lavinia said.

We entered the stone walls, and a rustic bee farm was seen with a lot of bees flying and hanging around. They finally reach the main door of the cottage and before they could even knock, the doors opened, and the man of the house greeted them.

He was a big man, easily 8 feet tall, with eyes of beasts and abnormal facial hair and a mane going through his back.

"Hmmm…" a deep voice hummed, "you are finally here."

"Burin." Lavinia bowed, "sorry for being late but I need to fetch these people from the church."

Burin then stared down at Jaune and Jeanne and both reacted differently.

Jaune felt like he was looking at a Faunus. But Jeanne felt her Sacred Gear telling her to create a silver sword and slay this monster.

Tension rose for a moment before…

"Thank you for hosting us." Jaune broke the tension with a smile

"Hmmm… you are not surprised to see me?" a deep rumbling voice asked

"Well, you are different, but I don't think that is bad."

"I am a Beorning, a skin-changer, and from your uniforms, you are a Monster Hunter; shouldn't you slay me now?"

Jaune saw Jeanne lift her left hand on her hip while slightly bending a knee, in the normal eye she looks like she was either casually relaxed or she was trying to get into a feminine or sexy pose, but Jaune recognized that she is in her battle stance.

"I know you are one, but even a regular hunter has the common sense not to kill every prey they see unless they are abusive hunters." Jaune asked with a smirk, "besides, even exorcists can't just slay every devil they see."

Jaune and Burin stared at one another.

Blue stares at Yellow.

"HAHAHAHAHAHAHAHAHAHA!" Burin laughed loudly and slapped his knee, "I like this one Lavinia, asks first and slays later."

Jeanne easily calmed down as Jaune was just relieved.

"Welcome to my home!"

Burin welcomed the three blondes and offered them something to eat.

"Your trek was long, so fill up first before we get into the gloomy discussion." Burin served some honey cheesecakes for the three; the cakes look very good, rustic, sweet, and creamy. But they were at room temperature.

Jeanne was already eating her cake, humming as she bounced on her chair with happy delight, but Jaune saw Lavinia blow cold air to her treat, freezing it just slightly making the honey and cream goodness look cold. Lavinia saw Jaune looking.

"You want me to chill yours too?"

"Can you warm it up, I like it toasty," Jaune said as Burin served mugs of milk

Lavinia cast a simple fire spell and Jaune's cake heated up, some honey bubbles a bit, steam came out, and the edges were slightly burnt.

Jaune dig in the hot treat. Jeanne smiled in amusement, "he likes burnt cheesecake."

"Ah, yes." Burin said, "I believe that is famous in America. That is what I like about cheesecake, you can serve it hot, cold, or just the right way."

The atmosphere was light with the beautiful and rustic design of Burin's home and fire keeping them warm.

After eating their snack, they gathered around Burin's fireplace and began to talk.

"So, I protect these lands and extension, the people living far from here." Burin said, "recently there were reports of missing persons from different towns and villages, and I have witnessed the kidnapers bring their hostages deep into the dark forest."

"Really? So did you try to save them?"

"I did, however, something, malicious was always there to stop me." Burin looked to the fire, "a humanoid thing with grey slimy skin, no eyes and has the claws and fangs of a vampire. They are fast, relentless, and very dangerous."

"Have you killed any of them?" Jaune asked

"I tried; the first fight was very hard especially since they use swarm tactics. But the second time I fought them, something curious happened; I brought a makeshift cross with me to fight them off, but apparently, it has not done anything."

The three blondes frown heavily, so they were able to modify these vampires to be immune to Holy Aura.

"However, I brought some of the corpses with me when the cross didn't work," Burin continued, "and let them get exposed to sunlight, and puff, they did. Flesh and blood turned into ash the moment the sun rose.

"So, it means that they are not able to remove every weakness," Jeanne concluded

"And that you can kill them through brute force," Jaune added as he looked at Burin.

"True. They are tough, but a good strike can kill them." Burin then looked at Lavinia, "and I reckon they can still be killed by fire or ice."

"The fight won't be an uphill battle," Jaune said, "Jeanne, your swords must be more on the magical and silver side than holiness."

"Understood."

"So, Burin" Jaune asked, "Can you take us to this forest"

"Sure thing." Burin was about to stand up to lead them the way

"Not now, the sun is going down," Jaune said as he saw the dying afternoon light, "as much as confronting them now will be great, we need to be prepared and be aware of how they move. Tonight we will be observing them from a distance."

"Shouldn't we do it now so that there won't be victims," Burin asked

"We can save the victims tonight, but we need to do it away from their forest so tha…"

"Don't worry about the villages." Lavinia said, "I have placed some defenses around them to ward those beasts and hypnotized their sheriffs to be alert for the night and armed them."

Jeanne looked confused, "How?"

Lavinia smiled coyly, "Guns, lots of guns. Courtesy of Grigori."

"Wouldn't they be swarmed?" Jaune looked at Burin.

"No." Burin answered, "they only do that once you are near their territory, but when they get to the villages only one or two, scouts, will kidnap someone."

"Good" then Jaune looked at Jeanne, "can you keep watch?"

Jeanne smiled and nodded.

"Lavinia, what else should we anticipate."

"Magicians, but you have to track their workshop first before they get involved. These modified vampires will be our only problem until then."

"Alright" Jaune stood up and began opening his bags, "let's set up some traps to protect the villages too."

Burin and Lavinia rose their eyebrow as Jaune remove different canisters and surprisingly some children's clothes.

"Hey Burin, do you have some straw?"

He nodded and went back to get some hay.

"What are you doing?" Lavinia asked

Jaune smirked, "Making a guide for us."

Author's notes

Now the plot is going forward, and welcome to the first arc of the story!

"Who is Lavinia?" she is from the first story of the author of DxD and is part of the DxD universe.

"Burin?" he is an OC, but he is based on a monster which you all know if you saw The Hobbit.

Also, for attire of Jaune, the blackcoat is the uniform of the Monster Hunters, but Jaune's is customized to symbolize his old team, Team JNP(P)R. If you saw their V7 attires, or at least their V4 attires, you know what I mean.

So, I received your reviews about the gore and I am happy that y'all are okay with it. Now a reminder, this story is not a horror, okay, but it will be dark as I possibly make it, but considering that DxD is already Dark with Ecchi Comedy, well… let's see.

Now for the monsters, I will make them monstrous, but I won't showcase extreme scenarios such as r*p3, but I can imply it, especially since Diodora is still in the picture, and boy I am ready when Cao Cao comes in.

The violence will be based on God of War, Witcher, John Wick, and a TV show that I believe is an underrated gem, Primal. And again, I want it to be very gritty like the properties I just mentioned because DxD just tends to just be about, "who punches harder, and Issei will get stronger later."

Note: I am not an anti-Issei.

Also, since I already posted the Journal of Jaune which lists the weapons he uses, please feel free to mention underrated monsters that I could use for the story. The more uncommonly mentioned it is in media the better, but I will mention commonly mention monsters too.

For the weapons, please feel free to mention them also, but please make them as mechanical or modern human technology as possible. We will deal with the mythical ones later.

Anyway please review, fav, and follow.

Take Care and God Bless!