Kimetsu no Yaiba does not belong to me but to Koyoharu Gotōge ... I only do this for fun and hobby

Warning: This is an AU. I think there is a slight Out of Character, don't blame me! I am new to fandom.

There are also changes with the manga canon.


The time in his being was something strange, he did not know exactly what day or time. The heaviness in his body is intense that moving at least as desirable was impossible for him, let alone his mind as it looks like molasses, was he drugged? Where was he ... wait ...

"Who ... am I?" He whispers barely since his throat is dry and the worst thing is that it burns inside. And what the hell with that strange feeling of emptiness expands in his body?

"I see you're assimilating" Where does the voice come from? Or rather, whose voice is it? He knows now that to has a companion ... But who? he feels how someone take his face and forces him to open his mouth.

"Drink this, soon you will regain consciousness" Sense? To drink? What are you drinking? The taste of that liquid. Metallic? It disgusts him but at the same time it is sweet ... wait, at what moment is a liquid with a taste similar to iron also sweet? he tried to complain but no sound could be emitted and she was less able to move. With that one thought, the unconsciousness succumbs again.

He doesn't know how long he continued in the dream. He only knows that upon awakening, his senses are now at higher levels as well as a strange sensation stirring in his chest.

"I see you woke up. Ironically you were the first to come into contact with my blood but in the end you turned out to be the last to wake up. Was it so hard for you to assimilate the process?" Process? ... Wait, who is he?

Before him, he observes the presence of a young man with pale skin but without ceasing to shine his tan, eyes like rubies but with a sharp pupil in the style of a cat, black / red gradient marks in the shape of flames that run from his forehead on the right side of his face to his chest, fangs peeking out of the masculine mouth and a pair of hanafuda earrings. His long burgundy hair is tied with white bows, he wears a red kimono on top of 3/4 sleeves with some white details as well as a black hakama, as well as a sword sheathed on the right side of her waist and lacks footwear.

That boy seemed beautiful, straight out of a history of samurái bishounen or crown prince of a kingdom. For some rare reason, both mind and soul were in sync for one thing: Obedience to him. Why?

"You feel lost don't you Tomioka?" Was that his name? ... that name ...

Fleetingly, the crimson-eyed boy takes his hands ... or were blue claws? and he uses it to pierce his temple. A whimper comes out of his mouth while images rush in like a whirlwind causing annoyance in his head. Giyu falls to the floor as a result of the shock and his companion helps him to sit up.

"Did you remember everything already?" More than a question, Tomioka felt that phrase was a confirmation.

"I ... my name ..." he mutters confusedly.

"You are Giyu Tomioka, user of the breath of water and pillar of the Demon Slayer Corp" Ahh ... it's true. He is a slayer who serves an organization to destroy demons. However ... Why does he no longer feel that affection to serve them? Or rather, why does his name no longer appeal to him?

"Can I ... see myself?" Silently, his partner helps him get up to carry it. At first it was difficult for Giyu to stand up due to the weakness that surrounds his body due to the rare emptiness he has in his chest? A full-length mirror appears out of nowhere and Giyu can see his physique for the first time since he woke up.

His black hair with dark blue streaks at the ends is gathered in a low ponytail, dark blue eyes with vertical pupils, on his pale skin he has black marks whose pattern is of a wave and runs from his eyelids to under his eyes, It also has two small gray horns with lines of the same tone only darker, the claws are blue that degrades from dark to pastel and it has fangs.

"That's me?"

"That's right, you were reborn into someone new. You are a demon, Giyu" A rare palpitation made him shudder at the last thing, and he smiled slightly. It is something that the burgundy notices.

"Mmm from that smile, you seem to like your new life."

"Yes ... um ..."

"I'm sorry not to introduce myself. I'm Tanjiro Kibutsuji, son of our king and the most powerful in this land: Muzan Kibutsuji" Upon hearing that, Giyu automatically prostrates himself in a mode of respect and submission.

"My lord ... I don't ..."

"Don't worry you're not the first to get like this. You barely woke up from your demonization so it's normal. The best thing is to get some rest, are you hungry?"

"Hungry?"

"Heh, I'll be right back" Tanjiro leaves for a moment, which Tomioka takes advantage of to continue admiring his new physical form in the mirror.

"This is the new me ... I like him" The goofy smile on his face was proof that the brothers' plan was a success.

Tanjiro and Nezuko's blood was too special, which Muzan realized after analyzing it some time before the destruction of the Demon Slayer Corp. Kibutsuji chose to test some slayers that his children captured to experience the demonization process with using their blood. and that of his children ... in the end he was amazed at the results. Apparently the blood of his children have a rare component that allows slayers recently turned into demons not only to have their memories intact (Only if he inserts his claws in the temples, as he did with his own) but also corrupts the human will, accepting that new life and putting aside his loyalty to the organization.

Knowing that, Tanjiro and Nezuko devised a plan where they would not only fulfill their ambition to destroy their father's enemy once and for all but also turn some into demons with their blood. With the information that their father provided from those experiments, the possibility of corrupting some pillars completely excited them but ... Who would they demonize? Both had to choose those who, throughout the time of the infiltration, were good to them, kind and who were not an obstacle when the conversion is complete and the demonic blood bends both the human will and the fidelity towards the Ubuyashiki. Once knowing who would be the privileged ones, they spoke with their father and uppers moons about the plan, something that was accepted and the operation began: Destruction of the Demon Slayer Corp and capture of the new recruits.

With the enemy out of the way, the humans who received the blood of the Kibutsuji brothers took half a year to awaken one by one, which was not expected was the strange assimilation behavior of their new life, even Muzan remembered that time when his children they woke up confused and lost in themselves and he chose to give his blood so that the assimilation was complete. It was the first to wake Genya, which Muzan was present at that moment and remember perfectly the words, gestures and actions the new demon did something that Tanjiro remembers and takes in mocking towards the deceased Sanemi.

"If you hadn't behaved like an idiot, I would have allowed you to become a demon and live happily with your brother Genya and serving us. Now Genya doesn't even want to know anything about you and longs in body and soul to serve both me and my sister and my father " Tanjiro returns with a silver tray covered with a red cloth to where his latest creation is when he is surprised to see how Giyu admires his new form with a silly smile.

"It's incredible, the bitter suicide smiles like an idiot just seeing his new appearance. Ahem ... Tomioka, I think it's time to eat" The named shudders when he hears Tanjiro's voice and bows in reverence.

"I'm sorry my lord ... I ..."

"Don't worry and come closer. We must satisfy your hunger" When removing the red cloth, a fresh human arm is discovered. Before his blue eyes, that piece was a delicacy for his mouth that he could not help drooling and intensifying his hunger. His lord puts the tray on the ground and takes a few steps away while looking at him with a mischievous smile.

"What are you waiting for? That arm is all yours, eat it and leave no piece" Tomioka could not stop his wild instincts and with one bite the feast begins. When he nibbled on the first piece of meat, it was impossible to describe the flavor that his taste buds immediately detected ... what he can tell is that with just that arm, it was enough to fill his stomach and vanish that emptiness that was until recently. .

The eldest son of Kibutsuji enjoys how his new creations delight in human delights, only a few ended up with the likes of eating demons, Genya being the clear example. Neither Tomioka nor the rest of the newly converted slayers are unaware that they have been eating all the members who perished on that memorable day for his father and the rest of his family, something that the burgundy and his sister enjoy.

"From those gestures, it seems like you liked your dinner, Ne?" Giyu nods as he licks the fresh blood from his food off his hands.

"The best thing is that I take you, we must get you ready to introduce you to my father and the rest. They're aware of your awakening and want to meet you."

"Know me?"

"That's right, so let's hurry" The former water pillar demon follows the boy to a room where there are fabrics everywhere, a large mirror and things related to sewing. A young man comes out to meet them to greet them: long golden hair up to his shoulders with red reflections as well as long ears of golden tones coming out of his hair, golden eyes with the pupil vertically, red lines adorning both cheeks and chin and forehead, a gold colored kitsune tail with red lines while wearing a simple white kimono and red hakama.

"Wow, but if it's Master Tanjiro and he brings a guest ... Is he the last of the others, my master?" The boy's soft, jovial voice resounds as he bows.

"Hello Sen, and if ... he was the last to wake up. You already know why we were there, right?"

"Yes, I'll see to it that you look presentable to Your Highness and the rest. If you wish, you can wait while I do my work."

"He trusted you will do well, you have never disappointed me. Especially since we turned you into a demon with Nezuko's blood, your conversion was useful."

The blue-eyed raven watches as Sen measures his body. The presence of a stranger bothers him, although if it is someone his master knows and trusts, he has no other choice than to be obedient to his master's designs.

"I have the measurements. I think I can make him something that feels comfortable ... something that reflects his identity and his power ... Do you associate with water?"

"Eh?" Giyu blinks five times in order to decipher what that demon said.

"Follow your hunch, when Tomioka sees the result, he will tell whether he likes it or not."

"I understand, sit down and wait" The golden-eyed demon retreats to do his things, Tomioka wants to ask what was all he just witnessed. Tanjiro laughs at the gestures of his companion and decides that it was time to answer those doubts.

"He's Senjuro Rengoku, younger brother of the pillar of flames Kojuro Rengoku, you remember them right?"

"Something ... I think ..."

"I found him hiding in his house, his father was a pain in the butt and I killed him, something Senjuro saw secretly. My sister took him out and well ... I asked him to turn him into a demon ... he was the second in wake up, and since I valued it a lot in the time when I was infiltrated in the organization, I asked my father to be our tailor. I remember once he told me that he learned to sew to help with clothes for his father and brother so that it's what he's been doing since his conversion and he's happy to make clothes for us. "

"I see..."

"Senjuro and the rest of those we convert with our blood, put their loyalty towards us. And that fascinates my father, since the trace of humanity and slayers has disappeared in each one, right, Tomioka?"

"Since I woke up and you helped me regain my memories, a strange sensation floods my being ... I think now I know what it is."

"And that is?" Tanjiro watches as Tomioka rises to his knees and gently takes his right hand, admiring those reddish claws with devotion.

"My soul, my heart and this body belong to them. Serving them is my motivation and meaning of life, the reign of Muzan-sama, Tanjiro-sama and Nezuko-sama will never end. I will give my life to protect them and I will help their motivations. and my lords' wishes be fulfilled, one way or another. I swear, I will be eternally faithful to the only ones I obey ... The demon king and the demon princes. "

The burgundy-haired man could not suppress a deranged smile, his father and sister did the same when each hunter offered loyalty to the three of them, increasing more pride as a demon, ecstatic him with pleasure and rubbing more and more the memories of those pillars that they killed. long time.

"Do you see, Ubuyashiki, filthy hunters? Another one swears loyalty to me, another one of yours swears us obedience and eternal servitude. Keep twisting and never rest because one of yours now belongs to the right side, fighting and destroying in the name of my father."

"It's beautiful to see someone offering fidelity to my masters" Says Sen who goes out to show some clothes that he has in his hands.

"I see you finished on time, Ne?" Senjuro or rather Sen nods as he asks Tomioka to change to try on the new outfit. It took the black haired man some time to get out and get a glimpse of his new outfit.

"Jo ... not bad. Sen, you excelled with the job, it fits him perfectly" Tanjiro's words were not a lie, Tomioka looks in the mirror and is hypnotized by his new self.

The blue-eyed demon wears a black hakama while the top is a yukata in navy blue, wears a degrading haori of blue with black sea wave prints, and a pair of zōri with blue straps. He had a hard time recognizing each other, how did that boy with the golden eyes get it right quickly when they met until a few hours ago?

"I suspect that his blood art is related to water. And the personality that he has is cold, serious but warm and simple ... as changeable as the states of water. It is a pride to know that I hit him so quickly the style of the young Tomioka. "

"That's why I always trust your abilities, Sen. What do you say, Tomioka? Do you like it?" The silence from the black-haired man causes curiosity in both.

"Is something wrong? Didn't you like my work?" Sen is concerned as generally, members of the Kibutsuji court were fascinated by his work, including some like Akaza or Kokushibo.

"I like this style, I like it but ... my name ... that human name disgusts me" With a grimace of annoyance, Giyu's monologue caused strangeness in both demons.

"Do you hate your name? I mean you want to change it ..."

"Yes, my lord. The point is, I can't think of one."

"Mmmm, I see ... He also wants to forget his humanity, just like the rest ... perfect."

"Well ... I hardly know you but ... like I said before, your personality can be cold, serious but warm and simple just like water is. Why don't you use a name related to water?"

"Related to water?"

"I can understand ... Sen, can you give our partner a name?"

"EH? Are you sure, my master?" The kitsune-tailed demon watches his master nod with a confident smile.

"Please, young Sen ... my new name is in your hands" Giyu bows slightly in supplication, making the blonde shiver more.

"I can't think of something ... Why did the master choose me to give a name when the masters have given the names of the rest?" Sen sighs as he thinks about the name of that black-haired man as he scans Giyu seriously.

"His eyes ... those marks ... even the clothes fit him perfectly, I'm completely unaware of that guy and his blood art but, I bet it's related to water ... unless ... Could it be? "

"From those gestures, it seems like you came up with one."

"That's right, my master." The dark-haired demon flinches at the look of Sen's golden eyes.

"Tsunami, being a phenomenon where calm waters rages with fury to destroy everything in its path. That name is perfect for someone like you, demon of raging waters."

"Ts ... Tsunami?" Tomioka whispers surprised to hear his new name.

"That name suits him well. I knew you would achieve with my request, Sen" The named shudders when he feels his master caress that golden hair, while looking at the former pillar of the water.

"So, what do you think? Tsunami" Those present observe the black-haired man trembling with a warm smile as he prostrates himself in reverence and faithfully pronounces ...

"I gladly accept my new identity. Tsunami will fervently serve his majesty, the Demon King as well as his sons."

"Perfect, get up and follow me, it's time for you to present yourself to my father, my sister and the rest of your new family."

"Yes my lord."

"Are you coming, Sen?" With a silent nod, Sen and Tsunami follow Tanjiro.


In a spacious old-style hall with modern touches inside the Dimensional Infinity Castle, a grand 5-level staircase can be seen, with a throne worthy of royalty being occupied by Muzan Kibutsuji himself at the top. Below him for the 4th staircase there are 2 thrones on each side with a considerable distance where his beloved children occupy, Nezuko being the one who occupies the left throne. Below them for the 3rd staircase, 4 pearly brown cushions are occupied by the 3 upper moons: Kokushibo, Douma and Akaza while Nakime also occupies that place. The following stairs are occupied by 3 cream-colored cushions in each one of which are empty but, very soon, their occupants in the new meeting that would begin would occupy it.

A large gate opens from which Tsunami, Sen and Tanjiro enter. Upon reaching the center of the place, the 3 prostrate in reverence before those present.

"Father, the last one has awakened and is here to present himself and honor you and those present" Tanjiro says respectfully.

"I understand ... Tanjiro, go up and sit next to your sister. Nakime calls the rest to meet the new member" The demon of Biwa agrees to the request of its leader, manipulates the strings of the instrument and in less than a minute , six figures appear. They ignore the reason for the call as they prefer to greet and pay their respects to their king. The burgundy with hanafuda earrings watches the situation from his seat.

"Why did that take time to wake up?" Nezuko asked in a whisper.

"Who knows, the important thing is that the new guard is complete. Father will have the moons and we will have the seven as new guards" Her brother replied with a confident smile.

"Does Dad agree with that?"

"That's right, we are considered as the princes who will inherit the will of our father. Japan is already our domain and only the rest of this world is missing to be able to rule it under the will of the father. Just imagine it, the three imposing authority over the rest of humans, our rampant species dominating the whole world, chaos and despair in the population ... Just imagining it is so exciting. "

"I know, just to think that I can have slaves under my control would be too perfect" Muzan smiles with pride when listening to the conversation of his children, his teachings that he and the rest of his senior subjects have given to the brothers, finally bear fruit

"They're stupid and naive. Conquer the world? Very soon that will come true. It would not be a bad idea for them to be named after the new kings in the future ... meanwhile ..." His gaze focuses on Tsunami, he doesn't know him but for the progenitor and king, he hopes that this type will be useful to him.

"Tsunami, I will leave you alone since it is your duty to present yourself before his majesty. But from afar you will have my support" Sen walks away from the black-haired man, the latter being who watches his confectioner pay his respects to those present and stand on the left side of the step initial.

Tsunami watches the six newcomers settle into the corresponding seats while enduring twelve looks of curiosity, annoyance and Happiness? In itself he was already uncomfortable by the scrutiny of those guys who arrived, the looks of the rest including the king himself caused a feeling of suffocation in his soul. He focuses his gaze on the burgundy with red eyes, who gives him a silent message of calm and confidence.

"Don't worry, I shouldn't embarrass Tanjiro-sama who has been good to me since my awakening ... You can do it Giyu ... no ... Tsunami" He opens his eyes showing that insecurity was no longer present in his mind and heart. With a solemn reverence he presents himself to what, from now on, would belong for eternity and I will serve faithfully.

"Tsunami, I will leave you alone since it is your duty to present yourself before his majesty. But from afar you will have my support" Sen walks away from the black-haired man, the latter being who watches his confectioner pay his respects to those present and stand on the left side of the step initial.

Tsunami watches the six newcomers settle into the corresponding seats while enduring twelve looks of curiosity, annoyance and Happiness? In itself he was already uncomfortable by the scrutiny of those guys who arrived, the looks of the rest including the king himself caused a feeling of suffocation in his soul. He focuses his gaze on the burgundy with red eyes, who gives him a silent message of calm and confidence.

"Don't worry, I shouldn't embarrass Tanjiro-sama who has been good to me since my awakening ... You can do it Giyu ... no ... Tsunami" He opens his eyes showing that insecurity was no longer present in his mind and heart. With a solemn reverence he presents himself to what, from now on, would belong for eternity and I will serve faithfully.

"Mighty Demon King, Honorable Demon Princes and the rest of those present ... My name is Tsunami and I have come here to pay my respects to you and swear absolute fidelity to their Majesties" He breathes deeply, praying that his words will take effect on the everyone's minds as he continues his speech. That memory where he made that oath to burgundy in that clothing workshop comes to his mind and he does not hesitate to repeat it this time for sure.

"My soul, my heart and this body belong to them. Serving them is my motivation and meaning of life, the reign of Muzan-sama, Tanjiro-sama and Nezuko-sama will never end. I will give my life to protect them and I will help their motivations. and wishes of my lords be fulfilled, one way or another. I swear, I will be eternally faithful to the only ones I obey ... The demon king and the demon princes. "

The silence adorns the place, Tsunami wants to believe that it is because they are analyzing what they just heard and it was only 10 minutes of agonizing for an applause to break that mudismo.

"Wow ... that is such a profound speech for someone who was the last to wake up from that process" Tsunami shudders upon hearing Muzan's words full of cynicism.

"However, I cannot deny that your words are striking ... not bad. Welcome to your new family."

"I appreciate your acceptance, my king."

"Surely you already know some like my Upper Moons, so to the rest of the guard, introduce yourself to who will be your new partner."

Tsunami watches as the six presences rise one by one, starting with a boy with black hair with long yellow highlights tied to a low ponytail with orange bows, two small cream-colored horns and bright yellow eyes, both cheeks adorning the lightning symbol on a gradient between yellow, orange and black. The dressing is a yellow haori with white details, black and yellow kimono with white details, from his calves to the beginning of his ankles they are covered with bandages while his claws are yellow.

"My name is Kaminari, the destructive thunder demon ... nice to meet you" Kaminari greets him with a neutral voice and he could swear as small flashes of lightning come out of his horns.

"My name Inoshi, powerful wild demon and I can feel that you are strong, Fight with me!" Euphorically screaming boy with long hair to his shoulders black with dark blue locks, has perforations adorned with two tusks in his ears, blue eyes teal and black colored curved thin marks on his cheeks. His torso has marks of a boar tattoo, he is bare only the upper part as he wears black pants and a boar skin belt as well as lacking footwear. Its claws are teal blue.

"Nice to meet you, I am Dokuhana and I am the demon you should be careful of as I can annihilate you with my poisons" A soft and scathing voice resonates from the black haired girl with purple / pink streaks tied up in a low ponytail and adorned with a black and white butterfly, light purple eyes. She wears a short white cape, fastened to one side by a triple dark purple knot, a lilac yukata with a black and white flower pattern, and white lace-up knee-high boots. On her face, there is a pattern on her cheeks of soft curved lines in the direction of her eyes, the funny thing is that the right eye is covered by a lock of his hair as well as the claws are lilac that at the same time are too long .

"Hanta ... you better not get in my way" Although it was a murmur, Tsunami can hear the voice of annoyance from the guy with black hair with gray streaks, dark purple eyes and black sclera, he has a mark black color with strong curved line patterns running across the nose area as well as under the eyes. He wears a purple haori, the top of a black yukata and a hakama of the same color as the top as well as a pair of zōri with gray straps and his claws are purple.

"My name is Kirai, it may be a treat for you ... or it may not, heh ..." The laughing voice of a girl with dark pink hair with green tips and is tied in a braid and adorned with brooches in her hair, she wears a provocative short kimono up to the calf height degraded from black to purple, geta and long zari almost reaching the limit of the kimono. On her face she has three vertical lines graduated from green to pink under her bicolor eyes, being pink on the right and green on the left, and her claws are greenish-pink.

"Kasumi ... is all" It was the dry introduction of the last member, a boy with long, straight hair of pale turquoise color that fades to a black when he approaches his waist, mint eyes and under his eyes are adorned 3 black dots, as well as 2 triangles on each side of his forehead pretending to be horns. He wears a black kimono with mint green details with long sleeves, his claws are turquoise and he does not wear shoes.

"They're all done. Tsunami, rest for now and tomorrow you start your training to wake up and master your blood art. You must strengthen yourself for the plans we have for you, understood?"

"Yes, my prince."


Tsunami's new life since his awakening has been somewhat calm, the months that he has been living in the infinite castle was one of learning and forging ties despite the fact that his kind are not lovers of that. His relationship with the higher moons is one of respect, especially for Akaza and Kokushibo with whom they train both in physical attacks and the use of the sword; With Sen, he was the only one with whom he got along compared to the rest of the new generation of demons without being ignored or wanting to finish him off for fun. As for the royal family, Tanjiro has been too kind to his person causing his devotion to burgundy to increase every day while with Nezuko, he has only had one or another contact but the deal is mere formality.

Related to his training, he has managed to control his blood art techniques and as Sen predicted, his blood art is related to water. He could also remember that his old life as a human, he managed the breath of water, which allowed him to mix those techniques with his new demonic power.

Tsunami was also able to bring his old life to a close by killing his former master with a tengun mask. He did not feel remorse when he pierced with his claws in the torso of that old man, the latter being who blamed himself for not having avoided that tragedy and being an involuntary participant by having allowed Tanjiro to be instructed ignoring that human facade and his many lies. The blue-eyed demon took pleasure in feeding on his former master to the last bit and satiating his hunger.

It has been 6 months since he joined the ranks of the Kibutsuji family; And right now, there's a meeting in which a subject makes a report of a mission in which she has been participating and who, for Tsunami, would be the first time he sees her. A girl with teal blue eyes, long hair tied in 2 low black ponytails with degraded blue tips, gray windlike markings on her cheeks, sky blue claws. She wears a short v-neck sleeveless pastel blue dress, black obi with gray accents, and knee-length socks printed with swirling lines exposing the soles of her feet.

"My lords, Tsuyoi introducing himself to inform you about the mission under cover" The teal-blue-eyed demon girl says neutrally.

"Mission?" Tsunami mutters confused since he was unaware of the existence of that demon.

"It's true! I forgot that when you woke up, she was far away" says Sen whispering to her.

"Do you know her, Sen?"

"This is Tsuyoi, she woke up after me. Master Tanjiro asked her to go on an infiltration mission in the time that you still weren't awake."

"Infiltration mission?"

"You'll know soon enough, listen to her."

"It is fortunate that you returned safely Tsuyoi, tell us the results obtained in your mission" Tanjiro comments with his typical smile.

"He is just like you my prince, suspected. There are foreigners who took the lands that previously belonged to the Ubuyashiki" After that statement, everyone is surprised including Kibutsuji himself.

"Foreign?" Nezuko's question is the same as the rest of the staff

"That's right, princess. Specifically, they are Demon Slayers from the United States, who have been operating for 10 months what was the former headquarters of the Japanese organization."

"Brother, did you know about this?"

"I'm sorry, Nezuko. I was suspicious since father told me about an increase in North Americans prowling around areas where slayers in our country operated. I went to find out but just barely and they caught me so, I asked Tsuyoi to infiltrate and look for information about it, obviously with the permission of our father. "

"Tsk, we thought we would get rid of those slags" Akaza mutters annoyed.

"What are the differences between foreign slayers and those we eliminated long ago?" Kokushibo asks, intrigued since he has never faced someone of another nationality.

"From what I have come to see, they're superior. They have breaths that surpass the pillars that Ubuyashiki led while alive."

"How interesting" The gaze of the six eyes hardened after hearing Tsuyoi's statement.

"Don't tell me you plan to pick a fight with those, will you?"

"Applies to you Douma, luckily you didn't ask the existence of foreign women among their ranks" Akaza replies sarcastically.

"Enough" Muzan's voice resounds leaving everyone present speechless. Tsunami can't help but shudder in fear due to the immense power that his majesty radiates, and he can't help but compare himself as an insignificant insect in front of the demon king.

"We have some annoyances invading the territory and it has been exactly two years since our victory over that organization, unaware that in reality, we destroyed THOSE OF THIS COUNTRY and not the rest. I'm not interested in which nations send, in the end, the result will be the same."

"Dad, will we declare war on those humans?"

"Something better ... But I will need to separate you two for a while" The reddish and pinkish eyes of his children widen in surprise, something that he ignores since in his mind, he wants to return to delight in the misery of the hindrances without care if they are from another nation.

"Those humans, will not know their own end and will learn that we demons are superior beings."


Months later, weeks before the end of the year.

Demon Slayer Corp Headquarters (Former Japan Headquarters-Current Headquarters occupied by the United States)

In a garden from which nothing remains of the old essence characteristic of the Ubuyashiki home, 3 men and a woman attend an extraordinary meeting, all of them wear the uniform of the slayers only, in a more military way (The female wears trousers instead of a skirt) and they carry a black cap / beret with gold lines while, all speak Japanese fluently.

"Are you sure you accept this?" Question a 25-year-old woman, blonde and short hair, grayish eyes. The guard of her sword is in the shape of a white diamond in the center with purple edges and a gray hilt.

"From the records we have found, we cannot doubt its authenticity" Says a 30-year-old man, short light brown hair and eyes of the same color, a mole under her left eye. The guard of his sword has a black circular shape in the center with white edges and a black hilt with white details.

"In addition, Miss Kanzaki has been very helpful in guiding us as a survivor of that massacre. As a former medical assistant to the former pillar of the insect, it was to be expected that her skills would be helpful in saving survivors" Mentions a 28-year-old man Short, black hair with blue highlights, grayish eyes, and a unique cut scar on his right cheek. The guard of her sword is shaped like a blue oval in the center with green edges and a black hilt with blue details.

"Three pillars, one tsuguko and four low-ranking, according to the records found less on the dates that the terrible events that killed the hunters of this country occurred. You nine along with Miss Kanzaki, are the only survivors of that horrible event. ... it is a relief that they present themselves to us, but are they all in tip-top condition? " One of the survivors stands up to answer the blond with long hair tied in a low ponytail to the height of his shoulders, freckled and with olive eyes. That 20-year-old young man has a weapon whose guard is shaped like a gray curved triangle in the center with black edges and a black grip with gray details.

"Yes, foreign slayers gentlemen. It took us enough time to recover, but in order to defeat the Demon King, we will agree to join forces with you "Responds a boy with reddish brown eyes, burgundy hair and wears the slayers' uniform from which he decorates it with a green checkered haori .

"It will be a pleasure to join forces to finish off the enemy. That creature will regret for being existing ... I will introduce myself since we will be seeing each other too many times, my name is Gray Foster and I am a user of the breath of the earth "The freckled man named Gray encourages the rest of his companions to introduce themselves.

"My name is Will Grandbell, user of the breath of the forest" The man with brown hair introduces himself.

"I'm Luke Garden, user of the breath of ice" says with a soft smile the black man with the scar on his face.

"Tsk ... Merry Steiner, breath of light" The female comments with annoyance as she looks with disdain at the survivors.

"It's an honor to meet you. From now on, we will trust you because as you said, we will see each other often in the missions to defeat the demons "The foreigners don't notice the look of malice that the burgundy has seconds ago.

"This is young Kamado. The best thing is that you eight rest and tomorrow we will meet to begin to propose strategies and also to know you a little more. And Miss Kanzaki, you can also rest. We'll see you all tomorrow at noon. "

"Understood, Mr. Garden" The group of survivors follow young Aoi to the outskirts to rest and regain energy.

"There's something about those guys that I don't like ..."

"You always distrust people, Merry. You have to stop with that mania. "

"Will is right."

"Don't take his side Luke!" The woman yelled angrily as she got up quickly.

"Is there a reason for you to be wary of those guys, Merry?" Upon Gray's question, the slayer named Steiner tensed as she couldn't speculate out of nowhere without any proof.

"When I have the proof, you will agree with me" By saying that, she leaves leaving the men sighing exhausted.

"What shall we do now? I doubt Merry will help us with this."

"We'll see later, for now let's focus on collaborating with those Japanese guys and let them feel the support from us. That demon king will pay to destroy the slayers of this country and now he plans to do the same with its inhabitants but we will prevent him from getting away with it "Both Luke and Will nod and are motivated after those words of Gray.

What the Americans ignore, is that they allowed the pass for their own destruction.

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"It's a beautiful landscape, Ne, dad? ... appreciate what this world offers us."

"True, one unique and that soon will be ours."

On a boat whose destination is known only to four people, who silently admire the sunset that nature offers.

"My lord, are you sure that Douma is not with us?" Asks a man with black hair tied in a high ponytail and with strange marks on his face.

"Better for me, I don't want that scum bothering us on our trip" A black-haired man with pink streaks, blue eyes comments without question and tries to get rid of the tie she wears in her formal suit.

"Deep down you appreciate it, Ne, Akaza?" A girl with long black hair with vermilion tips, pink eyes and demure dress scoffs. Akaza blushes as she turns on her back, trying to ignore the female's laugh and one of disapproval from the brand man.

"Behave Akaza, we're on an infiltration mission. And the same goes for you, Nezuko-sama. "

"Don't be so serious, Uncle Kokushibo" Nezuko pouted due to Kokushibo's attitude.

"I see... from now on, we will inform ourselves this way. Have your raven keep an eye on them in the meantime. "

"What's up dad?"

"Your brother has accomplished his part. When we are on dry land, ours will begin "Muzan smiles arrogantly at his daughter.

"Tanjiro was ahead of me? Eh ... Good! I will not lag behind either and will try my best to surpass him."

"That's right, you two show your skills to me ... Soon this world will be mine and you will reign by my side, the age of demons will be imminent and no human will be saved" Kibutsuji's plum red eyes shine with pure malice at the imagine a victory for your plans.

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"Understood ... have a safe journey and be alive" In the middle of a new moon night, a soft but dangerous whisper is heard.

"Is he already informed?"

"That's right, and all of this is possible thanks to your work, Aoi."

"It is my duty, my prince ... Although I wish more than anything that you call me by my real name."

"Heh, that would be being away from the miserable hunters so let's move fast."

Two shadows move quickly, taking less time to reach a town adorned with carmine red and the stench of destruction.

"Wow, you guys were hungry" Tanjiro jokingly remarks upon seeing his fellow demons stop the feast.

"You were delayed, although we saved a little for Tsuyoi. It's too bad Hanta and Tanjiro-sama don't eat humans" Kasumi comments emotionlessly.

"Don't worry, I turned some guys into demons and I think Hanta went hunting them for you, prince" Kirai says with a smug smile as he bites off a piece of the human arm.

"My lord, is your majesty already aware of our movements?" Tsunami asks.

"Yes, she is expectant. I think Nezuko must be jealous because I beat her, though ... Are you sure you're not with her, Kaminari? "

"As your slave I should have been by your side. But she asked me to be with the prince to fulfill the mission "Was the cold response of the named man with blond hair.

"Leaving aside, did you feel those guys? I can feel that they are strong ... and I want to destroy their bodies and eat them. "

"Calm down Inoshi. We still can't do that, it's enough to have gained their trust so don't you dare destroy what it cost me to do just because of your stupidity, idiot" Aoi pulls the ear of the black-haired man with blue highlights, the latter being complaining about that act.

"Although I can tell that this woman is not completely confident. Prince, in the event that that blonde discovers us, can I poison her? "

"Let's wait for time, DokuHana. If that happens, I will take drastic measures" The purple-eyed appointee nods after that statement. Soon, a demon wearing purple haori arrives dragging two bodies with demonic characteristics.

"We have three humans eating from our palm, for something Tsuyoi did his thing so we have to do our part. Your Majesty, I brought some food here ... Kirai, thank you for transforming humans into demons in order to feed us" Kirai smiles in gratitude for Hanta's compliment.

"My precious demons. Phase 1 is ready ... soon, those invaders will learn not to meddle in the affairs of others ... again, this country will lose its slayers, and it will lose all hope that was gained by those outsiders. "

Seven lights surround the group, showing the costumes or rather, the ancient ways they had as humans. All smirking in mischief as they kneel in respect including Kanzaki, Tanjiro can notice how the eyes of his group still have the slit pupil of a beast eager to hunt, and he cannot suppress a deranged smile showing his sharp fangs.

"All by the will of my father, Muzan-sama ... let's destroy those hunters and make this world ours ... the demons will reign for eternity" The son of Kibutsuji exclaims with ecstasy.

"So be it" respond with fervor his subjects. Tanjiro looks at the moon blackened by its new moon phase and whispers with dark malice.

"Let's start phase 2 ..."

THE END


GOD! FINALLY FINISH THIS !

My fault for the delay, I had difficulties calling:

-Lack of inspiration.

-Be writing or rather, finishing some that I had pending unfinished. (The latter since I did not want to stagnate to finish the epilogue of this fic)

But now with the earrings off the list, I really wanted to finish this and everything! Officially this fanfic is finished.

If you notice, the boys that the Kamado say, the children of Kibutsuji that they demonized made their appearance BUT I made the description of each one in an extra chapter. The same with US slayers who are OC of mine (Out of nowhere, nothing planned). By the way, this fanfic WILL NOT HAVE A CONTINUATION, because I'm busy with other projects and I have 2 Kimetsu oneshots to be published very soon (One I need to complete it, and the other, I already have the plot ready, I just need to write it)

It's time for the last Taisho Secrets!

-Douma stayed in Japan because Muzan ordered him to create demons to keep the US slayers busy.

-The mission that Muzan, Nezuko, Akaza and Kokushibo go to is to destroy the Demon Slayer Corp of the USA as well as the rest of the world. Something that Tanjiro and the rest will join him for when he's done with his mission.

-The order of how the boys woke up was: Genya - Senjuro - Aoi - Tokito - Kanroji - Zenits - Kanao - Inosuke - Tomioka.

-Akaza along with Kokushibo and Douma, trained the newly converted demons.

-Tsunami (Tomioka's demon form) wanted to untie his past as a human and that's why he decided to kill Urokodaki. The latter suffered its very bitter end since it allowed to train the cause of the destruction of the organization (AKA Tanjiro) And because another disciple became a demon and ate humans.

-Aoi along with the butterfly trio were fleeing since the massacre began, but they ran into the protas brothers. Nezuko thought to finish with the four but Tanjiro stopped and thought to save only one being Kanzaki the eligible one.

-For some rare reason, Inoshi (Inosuke's demon form) and Dokuhana (Kanao's demon form) get along with Douma to such an extent that she appreciates and enjoys her for their time in the latter's cult.

-Muzan decided to keep his three upper moons and Nakime, while Tanjiro and Nezuko stayed with the rest since in the end, they are subjects that they created with the blood of their children.

-The slayers from the USA arrived 10 months ago, at the time Kanroji woke up as Kirai.

That would be all. Thanks for reading this story, for your votes, added to your reading lists, for enjoying my follies. And see you at the One-shot I'll be uploading soon.