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 "Kamado" brothers have mixed feelings when they are called to a new and unexpected meeting in the infinite dimensional fortress by their father.
"Everyone knows why I made them come here, right?" Kibutsuji's words make most of them tremble as he manipulates some flasks as well as chemical objects while turning his subjects upside down.
"The upper moon 6 fell" Nakime responds passively.
"Not only did they fail me, but none of you have completed the goals I have set for you."
"It's our fault that they ... 2 pillars will destroy both: Being the pillar of sound and the pillar of the snake" Tanjiro says trying to be strong.
"I am not interested in the culprit, they failed to be weak" Kibutsuji continued to scold for going to know how long until they were kicked out of the place except for his children.
"This is the same for you. The fact that the two of you are infiltrated by the enemy does not imply that you are free from your duties, understood?"
"Yes Muzan-sama" The brothers respond with frustration.
For both of them, they treated the brothers Daki and Gyutaro with affection. Seeing that they could not save them hurt them enough since, if they had done that they would have compromised the mission that they both carry on their shoulders so they have to suffer in silence, longing for the moment of revenge to arrive as quickly as possible.
"I will not forgive them, I will destroy those pillars and torture their souls so that they never rest nor can they reincarnate" the older of the two whispers in anger, something that the girl listens to and nods before Nakime transports them to the Butterfly Estate at midnight.
3 months later
The moon shines in its descent in the home of the Ubuyashiki, its inhabitants are unaware of the turn that fate has prepared for them, especially for someone specific who receives an unexpected visit from someone.
"It seems that his presence is surprising, young Kamado" Says calmly a man with black hair and purple markings that expands on his face where his eyes are white and dull. In front of his person, the one named watches him without emotion.
"As you can see, I lack the sense of vision because of a curse that has been in my family for generations, which consumes the life of their descendants slowly, especially if they are men. So I'm vulnerable to any attack target from the enemy. In these moments, it is a clear example. "
"Do you know why I'm here?" Tanjiro asks in a dry tone.
"You will end my life, young slayer ... no, young demon" Hearing that last, for a second, the burgundy's red eyes sparkle as the pupil sharpens a cat-like style before he returns to his costume. human.
"Do you see the future?"
"Call it intuition" The smile Kagaya offers disgusts him for a moment.
"I see. Well, it's better to end this."
"At least give me the chance that my family will be free of his anger."
"Who knows."
"Mmmm. My only regret is that my children will suffer for my departure, but I'm sure they will become stronger to finish you off."
"I very much doubt your word.
"One last question ... why and for how long have you betrayed us?"
"Betraying? From the beginning we wanted to do this but knowing that the current pillars are a pain in the butt, we had to choose to start from scratch and win the confidence of each member. I find it funny how everyone is unaware of the secret ... well except for the pillar of flames, he knew about it at the cost of his life. "
"..."
"However, you will be the second person to take the secret to the beyond."
"I see. I feel sorry for you with what you will face from now on" That enigmatic smile that gives disgusts him completely and decides to finish off the leader of the Demons Slayers with a single blow with his claws.
Listen to the dull thump of that man's body and check his condition while he wipes the blood from his hand with the clothes of the late leader, sighing he decides to look for his sister. Upon finding, he observes the bodies of a white-haired woman and 2 girls of the woman's color: Kagaya Ubuyashiki's wife and older daughters were killed by Nezuko, who observes a field of flowers that to be specific are red spider lilies , which are located in one of the hidden gardens of that home while admiring how the sunlight begins to give its first warnings slowly.
"So you finished off the rest, huh?" She shows him her bloody hands with a sadistic smile.
"It was easy, I was able to finish them in one fell swoop before they decided to go crazy."
"Madness?"
"They planned to kill themselves by exploiting this place" Hearing that, Tanjiro widens his eyes in surprise.
"Was there a bomb?"
"Yes, I detected the smell of those things that they use to make explosions and I used my blood art to neutralize them."
"What a relief that you could stop them. If that had happened, our plan would have gone to waste and we would have to run away so that those guys wouldn't discover us" Ignoring his relative's comment, Nezuko decides to walk to where the flower field is to admire them, until one in particular catches your attention.
"Ne, brother ... look at this" The named arrives at where his relative is. In silence, he shows her a peculiar flower.
"And that flower?"
"I don't know what flowers these are but, do you realize that most are red but there are 3 that are blue? It's weird."
"Mmmm ... and what will you do?"
"I'll take them with me to give to Dad. I hope he likes it."
"You're very enthusiastic. Our father doesn't like flowers, you know?"
"Mou ... you're a party pooper" The boy laughs when he sees his sister's pout.
Infinite Dimensional Fortress
Tanjiro in his human costume and Nezuko are prostrate in front of Kibutsuji, who is reading a book.
"So you ended up with Ubuyashiki ... although not all of them", the man comments in a neutral voice.
"Father, we did not know that there would be more descendants from the leader of the Slayers. They are surely protected since he wanted to save them."
"We'll find a way to make up for our mistake, Dad."
"It is the least of it, I am proud that you achieved the essential and that was to end that man. I trust that you will end his descendants."
"We will take care of that father / dad" They shudder to feel the caresses of their heads from their adoptive father, causing effusive emotions within each one.
"Rest. From what your crow informed me, there will be an urgent meeting with the pillars."
"Tsk ... it is a nuisance to return but, for the mission we must bear it" Tanjiro sighs with annoyance and regret.
"By the way dad, I brought you something" She takes out of her haori, the 3 blue flowers that she saw in that garden of the Ubuyashiki.
"And those flowers?"
"They were in the garden of the Ubuyashiki home. Most were red but only these 3 were blue, I know you don't like flowers but ..." Muzan sighs after thinking about her daughter's intentions for a few minutes.
"Those flowers become familiar to me ... too familiar."
From there (And by a strange hunch) he chose to preserve those flowers while finding out information since, those flowers were too peculiar and at the same time curious.
Curiosity ... that word defines what has happened to him in the last 5 years being the Kamado brothers who now carry the last name Kibutsuji. Never in his many centuries as a demon did he come up with the great idea of adopting 2 children who were supposed to be his servants, and to top it off they were the possible bloodline of that scum who dared to hurt him in the past. To his surprise, they were able to walk in the sunlight that he longs to feel with just 3 years since he turned them into demons, to which he adds that they infiltrated the organization of their enemies to destroy them from within ... he witnessed the execution of a pillar and now Ubuyashiki entered the list of its victims thanks to Tanjiro and Nezuko.
Muzan sometimes wondered what would have happened if things had taken a different turn. Had the boy become a slayer and he had decided to hunt him down for revenge? What would happen to the girl? Had taken the way like her brother? For the first time the dark-haired man thanked fate that things were for his good even if it was ironic.
And the irony was even greater when he investigated the mysterious blue flower that Nezuko gave him as a gift, it was reasonable not to throw them in the trash because what he discovered would take the biggest turn of his life.
1 month of research, testing and analysis paid off. He did not want his moons or his children to bother him, he did not even flinch when the presences of the upper moons 4 and 5 perished in the hands of his enemies. He was ecstatic by what was in front of his eyes, he did well not to eat his children when the miracle of walking in the sun without being cremated happened ... he did not deny that option when learning about it at the time, but the hunch that He had to avoid eating them, it was worth it and now he was witnessing that act of paying attention to his intuitions once again.
He urgently summoned his moons and his children, the latter being late because of a mission they barely received from the new leader of that organization.
"We regret the delay, I had to fight to be given a solo mission to come to the fortress," says Tanjiro in his true form as well as her sister.
"Your crow informed me of that, so there is no problem." The rest were shocked to see the demon leader in a new style.
The demon leader has long black hair up to his back, numerous mouths with an incredibly sharp set of fangs on his arms and legs. His skin also appears to have a dark red mass that grows from the ends of his limbs and branched of his body where he can hide his private and hind parts.
"My lord ... that is ..." Akaza knew Kibutsuji's shape changes perfectly to mislead the enemy, but seeing that change completely froze him, he believes that those disgusting mouths that are on his master's body were the main reason for his repelus.
"Dad, what happened to you?" Nezuko had to suppress the urge to run to where her father figure is, the same thing happens with Tanjiro.
"It is one of the effects, I only use this mode in very extreme cases when I have to go into battle so, I must wait for it to fade and take the original form" Muzan responds as if nothing
"Effects?"
"This is Akaza, if I summon them it is for too important a reason."
"We will listen to what you want to say, my lord" Kokushibo says seriously.
"First of all ... Tanjiro, Nezuko. Before you came, what time was it?"
"Time? ... I think it's still day. But why do you ask?" His father's smile made Tanjiro a little uneasy.
"Perfect. Nakime, open a door near where my children were located" At that request, the sense of alarm of the young people lights up.
"Wait a minute, what do you plan to do?"
"A demonstration. Kokushibo, don't let anyone in the world interfere in this, and that includes you and my children."
Before they could say anything, the biwa demon opens a door from which an open field with little vegetation can be seen, the blue and clear sky demonstrated what was commented by the user of the solar breath since the sun is at its peak. Muzan takes a step and goes to that place ignoring the cries of his children and the inevitable happens: The sun's rays touch the pale skin of the demon king and hold on not to scream from the pain of burns from the sun, however, the wounds generated by the burning star it begin to fade. The others were left speechless by what they were seeing.
"Father ... perhaps you ..." His eyes did not deceive. Muzan resisting sunlight? Just like them? But how is it possible? They knew perfectly well what man suffered to find a way to overcome that adversity for centuries.
In silence and without any explanation, he pulled a tentacle out of nowhere to wrap the rainbow-eyed moon and drag it to where it was, Douma unable to say anything in his defense felt the horror of burning under the sunlight on his left arm. For Akaza who completely hated that guy, he felt sorry for the first time when seeing the suffering of that demon, Kokushibo could not help but shudder to see that scene while Tanjiro and Nezuko were speechless.
Kibutsuji "sympathized" with his subordinate's misery and returns him to where he was before martyring him. Douma witnessed the horror of being roasted by that solar star without being able to flee, he knew that by his demon blood, the sun automatically is his enemy but he never imagined the terror of being cremated and to top it off, because of his boss.
The plum-eyed man ignored what he had caused and entered his home like nothing ... it was time to answer the questions. Once inside, he sits in the same place where he once watched the execution of the Rengoku and then took a breath, since he sensed that it would be a long talk.
"Nezuko, do you know what flower you gave me a month ago?" Watch his daughter shake her head negatively.
"New question ... What is the flower I have wanted so badly to search for which NONE of you have been able to find?"
"It was something blue ... but I don't remember the name" answers Douma, already recovered from his burns.
"It's the blue spider lily" Nakime replies without emotion.
"Exactly. That flower that is key to being able to walk in the sun again and for centuries, was impossible to find."
"But what does that lily have to do with the flowers I gave you?"
"That damned Ubuyashiki ... surely he was completely unaware of what was growing in his garden. For so long, what he wanted most was obtained by that scum."
Everyone was puzzled since they couldn't understand what the man was saying.
"It happens that, the flower that you brought Nezuko, was the one that I have been looking for for a long time. The blue spider lily, a very rare one of its kind" The surprise was huge in those present.
"I ... Did I find that flower?" The named whispers in shock.
"It's great Nezuko!" Her brother's flattery thus embarrasses her.
"So, the main reason for you not perishing in the sun was ..."
"This is Kokushibo, the reason why I was disconnected from everyone for 1 month. That flower from what I could find out, it only blooms between 2 to 3 days per year and only during the day ... hence why I never could. find."
"In other words, it needs sunlight." Douma mutters.
"Exactly. The worst thing was that it only survives in that certain time because afterwards, it tends to wilt. Hence why I ordered you to freeze those flowers, Douma" The named could understand about the strange request of his boss some time ago.
"Once I found out information on that flower, I started experimenting to get immunity from the sun. 1 month of constant study, experimentation, trial and error, and in the end I was able to do it."
"Father's dream came true. Congratulations" Tanjiro and the rest congratulate the man with glee.
"It is still missing. That is why preparations to eradicate the insignificant slayers will begin shortly and for that to happen ... I must give them an incentive."
6 tentacles appear on the back of Muzan, whose protuberances are decorated in a sharp tip which are inserted into the necks of the present.
"Accept this new blood ... an invincible blood, one that will make you powerful and you will face your enemies." Man enjoys the screams that some give out due to the effects of giving his blood.
He knew that they must be patient so that they can get used to his blood, but the emotion of what was coming was so great that he could not repress a sadistic smile.
"Your days are numbered, Demon Slayers."
TO BE CONTINUE
I'M REALLY SORRY! I didn't want to publish this BUT I also didn't want to leave you with the intrigue of waiting.
It happens that ... this chapter is not completely finished because the great revelation is coming BUT I have too many problems with the development of that part, the fluctuating emotions of the slayers as well as other things. So it is best to publish the first part of the end of the story in what I solve the problem I have.
I said to myself: Why not publish what is before in what is advanced with the rest? I say, I have literal almost 7k in writing and I have to divide the part of the revelation and be able to continue not to stagnate, since currently, I'm already doing the battle or as I say better, massacre because yes, our slayers will not survive ... or if? It's betting time, who lives and who dies!
Whatever! This time I cannot say when the 2nd part would go up, since I must solve with the dilemma I said before. I don't promise anything but I hope not to take so long, I still need to write the epilogue to end the story.
See you!
P.S: it's time to ...Taisho Secrets!
- This part reveals why Muzan did not eat our brothers. Let's say that the voice of reason told him that they were very special and that he shouldn't eat them and boy, in the end he thanked that little voice in his mind.
-The event of the death of Kagaya and his family is in full training with the pillars. None of the slayers know who or who murdered the Ubuyashiki.
-Kagaya and his family were not aware that the blue spider lily blooms in his garden all this time. They don't know that one of their ancestors knew that Kibutsuji was looking for that flower and decided to plant that flower as well as those of red spider lily in the garden of his home, the ancient Oyakata took that secret with him when he died of the cursed disease. None of the descendants believed that having the red spider lily in their home garden was a symbol of the curse that none could escape and they preferred that it was better to remove them only when they defeated the demon king.
-Now that Muzan has the immunity to walk in the sun and gave his blood to all the moons, as well as his adoptive children and someone else, will they have that ability to walk in the sun? We will see very soon.