I DO NOT OWN ANY DEMON SLAYER, OR SWORD ART ONLINE CHARACTERS, ALL RIGHTS GO TO THEIR COPYRIGHT OWNERS,THIS IS PURELY FOR FAN SERVICE AND I ONLY OWN THE OC'S I CREATE AND THERE IS NO PROFIT INVOLVED WHATSOEVER THIS IS A HOBBY AND THE ONLY THING I GAIN IS A BAD SLEEP SCHEDULE FOR FREE, THANK YOU FOR UNDERSTANDING!

Bold = Important Text/Breathing Styles and Techniques
Italic Thoughts
Underline Whisper

Quick Author's Note: I plan on doing Tanjiro X Kanao as the pairing for Tanjiro as I think it's a beautiful pairing and I've always liked it and I love fleshing in more Demon Slayer characters as I go, I have no plans to change Kirisuna, I'm sure I just upset someone, but hey the events I want to do for this story doesn't allow me to split up Kirisuna and now that I think about it, Neither do I want to, because I see nth wrong with that cannon ship.

Chapter 3: History.

We see Tanjiro lying unconscious on the ground of a garden until opening his eyes with confusion as he sits up and sees a gigantic building in front of him with one thought on his mind. "Woah….this building is huge! Where am I!?" Tanjiro thought as he gains a surprised face until turning hearing voices behind him.

"I heard he was the player who took on the boss all by himself, so I was expecting someone with more flair, but it's just some ordinary looking kid, too bad." A man with white hair says with a little disappointment in his voice.

"We must see that this boy is respected and rewarded for his noble actions, so it shall be!" A man with blonde hair and red flame-like highlights says.

"To think that he protected everyone in the raid party without seeking any reward or fame, what a brave and beautiful display of chivalry!" A young woman with pink hair tied into ponytail braids with green highlights says.

"Who are all these people? Are these people..…the Hashira?" Tanjiro thought before spotting Shinobu among them, causing him to smile with her giving one back.

"This is the Demon Slayers Headquarters, you're here because you, Tanjiro Kamado, have been personally invited by the master to join the Demon Slayer Core. Before the master arrives, we should first decide which Hashira you would like to train under-" Shinobu says before being interrupted by the blonde man.

"There's no need for that! This boy has shown excellent potential, I will train this boy myself!" Says the man, this man is the Flame Hashira, Kyojuro Rengoku, he has long shoulder length blonde hair with bangs at the side of his face as well as a small ponytail in the back, at the ends of his hair are red flame like tips that presents his hair as a fiery inferno, Rengoku also has black eyebrows and red eyes with an orange outline as well as white pupils. The Flame Hashira wears a white cape-like Haori around his shoulders that fades into an orangish yellow color with red flames on it and making the end look like a fire, he wears this cape-like haori overtop a Dark Brown demon slayer uniform with golden buttons showing proof that he is a Hashira, Rengoku also wears red Kyahan over his calves that share the same flame like pattern as his Haori but with a golden yellow flame instead, like Tanjiro he also wears Tabi socks with a pair of zori sandals that have a red strap, on his left waist side is a white Katana with a orange fire hilt with a red interior, the blade also has a white grip with an orange end piece, the blades Saya is white with gray lined arrows going down it with the end of the Saya having a gold end piece.

"In that case I'll style him perfectly after we see his blades color, I'll show you the most dramatic catwalk ever." Said the man with white hair, this man is the Sound Hashira Tengen Uzui, he has short white hair tied back into a ponytail, over his forehead he wears a headband with six light pink gemstones with three large of them being large, these gemstones are arranged in a line with the three small arranged in a triangle in the fair left with the big ones going to the right, on the left and right of the headband is a chain of smaller pale blue gemstones that hang from each side of his headband, framing his face in the process. Uzui has inward slanted maroon eyes with the left eye having a large and small alternating dot pattern that runs inwards toward his left eye, shaping it to look like a dotted star. Uzui wears a sleeveless dark turquoise Demon Slayer uniform along with a burgundy cloth wrap around his calves and over his Tabi socks and White strapped Zori sandals, around his upper arms he wears two thick golden rings with fingerless blue gloves around his hands with the middle finger securing them with a white band his wrists hold another set of thinner golden rings with two on each side, on his back are two largely wrapped katanas linked by a chain around their golden end pieces, they both share the same red grip with green diamonds as well as the same green guard, like Rengoku his uniform has golden buttons showing that he is a Hashira.

"No way! I wanted to be the one to train him! He's such an adorable child it's not fair!" Thought the Love Hashira Mitsuri Kanroji, a curvaceous young woman with average height a fairly muscular build for a lady, she has a slightly pale complexion and round, pale green eyes with long eyelashes, a small beauty mark beneath each of them, she has long light pink hair that fades into a lime green color half way, she wears her hair in three thick braids, two in the font and one in the back, she also has five short choppy clumps hanging over her face as voluminous bangs, the tips also being lime green. Mitsuri wears a pink tinted version of the Demon Slayer uniform with gold buttons to show her status as a Hashira, the chest area of her uniform is left unbutton because of it's "Tight" fit , overtop her uniform she wears a plain white haori and a skirt in place of the usual hakama pants, she also wears a pair of navy blue thigh high Tabi socks layered with vertically striped lime green socks and a pair of white zori sandals with pink straps.

"A last, to see such honorable and selfless acts from a young child as this, I shall fight by his side with respect, may you train him to be the best swordsmen of us all." Said the Stone Hashira Gyomei Himejima, a very hulking man among the Demon Slayers, easily towering over his fellow Hashira with a powerful and extremely muscular build. He has spiky black hair that sticks up showing a prominent scar running horizontally across his forehead. His eyes are pure white with no visible irises or pupils from his blindness, his eyes are also leaking tears seeing Tanjiro perform such noble acts because of how emotional Gyomei can get. Gyomei wears a black and white Demon Slayer uniform with bandages over his shins resembling Kyahan as well as white zori sandals with an olive green Haori-like cape draped over his shoulders. The collar frame of the Haori-like cape contains the kanji for Buddha from top to bottom on it, along with the separate kanji all over at the back. He also sports a large beaded necklaces around his neck and carries Ojuzu when he is not in battle.

"Um, what was the shape of that cloud again? What was it called?" Thought the Mist Hashira Muichiro Tokito while looking up at the sky in his own little world. Tokito is a young boy around the same age as Tanjrio, he's around the same height as tanjiro with the same lean muscular build but with long straight hair of a black color that fades to pale turquoise as it approaches his waist. He wears his hair loose with two clumps protruding slightly from each side of his head, a set of marginally shorter hair left down to frame his face with unruly bangs covering his forehead. Tokito also possesses large empty-looking pale turquoise eyes. He wears a dark, slightly turquoise tinted Demon Slayer uniform with golden buttons, his uniform has longer and loser sleeves that are more reminiscent of those of a kimono than the standard cuffed unformed, he also lacks any kind of Kayahan or wrapping around his calves, giving his uniform an overall loose and sizable appearance, however like the others he has Tab socks but of a dark blue color and a pair of white zori sandals with dark blue straps.

Hearing this Tanjiro looks at the Flame Hashira Rengoku with a look of curiosity as the man smiles at him. "You should become my Tsuguko! I'll look after you!" Rengoku yells, making Tanjiro sweat drop a bit.

"B-but I don't even know your name Mr.?" Tanjiro askes before being given a fast answer.

"Kyojuro, Kyojuro Rengoku! I am the Flame Hashira!" Rengoku yells with passion and excitement causing Tanjiro to smile.

"I'm Tanjiro Kamado! It's nice to meet you Mr. Rengoku, but I don't think I don't know about this, I mean I don't think I should be wasting your time, heh." Tanjrio says with a smiled sweat drop while looking at Rengoku before replacing it with a warm one on his face "He's odd, but he's got a good heart, and I can smell he's got a strong sense of justice. Maybe life in here isn't so bad after all when people like him exist." Tanjiro thought with a warm smile on his face.

"Don't waste your time Rengoku let Tomioka train him instead." Said the Serpent Hashira Iguro Obanai, causing Tanjiro to look up at a tree and see him in a tree laying down on its branch. Iguro Obanai is a man of similar height to that of Muichiro and Tanjiro as well as a similar muscular build as the two, He has straight-edged black hair of varying lengths the longest reaching down to his shoulders and the shortest stopping at his cheekbones, which he wears down with two short strands hanging between his eyes. His eyes are almond-shaped and tilt upwards on the far sides and are unusual due to Obanai possessing heterochromia with his right eye being a yellow color with a black pupil and his left eye being a turquoise one with no pupil showing. Obanai also wears bandages over his face just under his nose along with a white snake around his neck. Obanai wears a navy blue Demon Slayer uniform with golden buttons signifying he's a Hashira under a black and white pinstriped Haori with the hem and cuffs which are striped lengthways rather than vertically which covers his hands. Obanai also sports bandages in place of the leg-wraps around his calves giving them resemblance to Kyahan as well as white zori sandals with blue straps.

"This boy is Tomioka's problem and letting it bother others is making me feel ill, based on what Kocho told us he knows this boy in the real world too. Since we know that he should be the one who has to take care of and train this boy, but then again what kind of lesson could he possibly teach him, fire and water don't mix very well. What do you think about all this Tomioka?" Iguro says while pointing at Giyu Tomioka, causing Tanjiro to look over and widen his eyes seeing Giyu.

"No way….so it is true…..you really are stuck in here with me…" Tanjiro thought while frowning.

Giyu Tomioka, former Cop now Water Hashira now wears a dark cyan tinted Demon Slayer uniform with Golden buttons signifying he's a Hashira as well as buttoned white leg wrapped Kyahan and Tabi socks with a pair of white zori with dark blue straps, Giyu wears a Haori that's split down the middle into two different patterns with the right one a solid dark red and the left one being a geometrically patterned with rhombi of green, orange, and yellow.

"Iguro you're as sharp tongued as ever I see, I love that side of you!" Mitsuri thought with a smile and a small blush on her face before turning to look at Giyu. "Tomioka's all by himself all stoic like! What a cutie!" Mitsuri thought with excitement

"That is a possibility, he did come here without a second thought, but we shouldn't be too hasty on this decision." Shinobu says with a smile. "Tanjiro, from both what I have heard from you and have seen from you have caught not only the Hashira's eye but the eye of the master, you have immense potential, you are aware of that aren't you?" Shinobu asks questionably while kneeling to look Tanjiro eye to eye with a smile.

"Well well, what kind of fun do we have brewing here? Is that the kid you all are so interested in? He doesn't look so impressive to me, why should we bother wasting our time?" Said a man with white spiky hair walking around the corner of the building, this man is known as the Wind Hashira Sanemi Shinazugawa a tall man with a lean muscular build with long white spiky hair and large pale purple eyes. His face and body are covered with scars that have appeared from his rigorous training with a blade in the real world. Like the other Hashira Sanemi has golden buttons on his green tinted Demon slayer uniform to show he is a Hashira but he has the chest unbuttoned to expose his muscle and abs with a white long sleeved shirt over it with the kanji for kill etched on the back. Sanemi wears tabi socks with a pair of white zori sandals with green straps as well as white buckles around his shins, on his left side is a Katana with a white wrapped grip with a green end piece as well as the middle of the grip having a green wrap with dark green diamonds, the katana's guard is a shuriken flower-like shape with it being green on the inside with golden studs while having a silver steel outline, the blades Saya however is a light black with white camo like marks over it as well as deep black end piece.

"Shinazugawa is so handsome, and his scars make him look even more handsome!" Mitsuri thought with a small blush and a smile on her face.

Shinobu's smile disappears as she stands up and turns to look at Shinazugawa. "Wow, even when she's angry, Shinobu still looks as cool as ever!" Thought Mitsuri.

"Shinazugawa, please don't say things like that out of line" Shinobu says with a cold tone with anger building up in her at Shinazugawa's words.

"Run that by me again kid, your name is Tanjiro Kamado was that it? You supposedly mastered total concentration breathing in only a month, and total concentration constant in a mere day? You know what we call that? Completely impossible, you idiot!" Shinazugawa yells with a man grin on his face as he grips his sword's hilt and unsheathes it, showing its green colored blade before spinning it and catching it in a swing as Shinazugawa giggles and dashes at Tanjiro, causing the other Hashira to gasp out in surprise at Shinazugawa's outburst of violence.

"Cease this! The master will be arriving shortly!" Giyu yells with an infuriated face, distracting Shinazugawa, causing him to miss his strike at Tanjiro who leans back dodging the strike narrowly before leaping in the air, causing everyone to look up at him in surprise before watching Tanjiro headbutt Shinazugawa, stunning the man for a second and allowing Tanjiro to catch his fall with his hands and spin kick the Wind Hashira away and onto the ground. Seeing this display of speed of combat skill makes Giyu relax a bit and get a brief flashback of the old Tanjiro back in the hospital room.

"You really have grown up haven't you, you have gotten stronger…..Tanjiro" Giyu thought with pride brewing up inside at seeing Tanjiro's newfound strength.

Shinazugawa tenses up from the blow to the head, feeling the same pain Kibaou did back at the meeting for the boss raid when Tanjiro headbutted him, seeing this causes Mitsuri to let out a small but shortly lived laugh that makes her blush in embarrassment from the other Hashira giving her a glance. "Pardon me…." Mitsuri says in embarrassment as Tanjiro quickly grabs Shinazugawa's blade and jumps back a bit and gets in a defensive fighting stance.

"Damn you…!" Shinazugawa says while in pain as Iguro looks down upon the scene with an observative gaze.

"Tomioka's outburst must have been a distraction, but that boy still managed to get a blow in, either Shinazugawa has gone soft or that boy really does have hidden potential." Iguro thought as Tanjiro clenches his teeth in anger at the white haired man.

"Even if I have no potential like you said, you shouldn't attack people out of anger! If you can't control yourself when needed or respect the wishes of others, then you'd be no different from the Demons that you kill, if you haven't realized that, then you shouldn't be a Hashira!" Tanjiro yells with anger in his voice, causing Shinazugawa to look up at him pissed off.

"You no good little..!" Shinazugawa says before standing up. "I'll destroy you!" Shinazugawa says with a crazed look on his face, ready to attack Tanjiro at any moment before two short white haired girls speak, having seemingly appeared out of nowhere because of all the attention focused toward the small feud.

"The master of the mansion, has returned." Both girls say simultaneously, causing all the Hashira and Tanjiro to turn their attention toward the building where a black haired man walks forward.

This man is the Master and Leader of the Demon Slayer Core, Kagaya Ubuyashiki, a man with light skin and black shoulder length hair parted at the middle of his forehead, the man has odd purple skin and veins popping out of his forehead that threaten to stretch across his face, causing his eyes that were once Lavender purple are now lavender white with no pupils to be seen, the man wears a plain black kimono secured with a tan colored braided obi over a white juban, he also wears white calf length Haori with a unique design of gradient flames of the colors purple and salmon pink rising from the hem up to the half of the sleeves. "My beloved children, I thank you for coming here this day." Kagaya says as he walks forward with the two girls closing the door behind him before guiding him to the entrance with the sunlight.

"Good morning to you all, the weather is strikingly nice today, perhaps with a blue sky. Finding ourselves here at the semi-annual gathering with all the same faces, it brings me joy." Kagaya says, causing Tanjiro to relax and look at the man with empathy seeing his condition.

"So this is the master? He's sick, I can see it in his bloodstream….he can barely move as is and it looks to be getting worse…." Tanjiro says as reality shifts for him, allowing him to see the bloodstream, muscles, nerves, and even the brain of Kagaya, seeing the disease within him that continues to weaken the man before reality shifts back to normal with Tanjiro finding himself unconsciously bowing to the man in a kneel alongside Shinazugawa and the other Hashira, dropping the green katana he had in his hands a mere second ago.

"I am pleased to see you in good health as well master, I fervently pray for your continued good fortune." Shinazugawa says with nothing but respect in his voice as Kagaya smiles softly.

"I thank you, Sanemi." Kagaya says, causing Mitsuri to gain a jealous look on her face.

"Aww, I wanted to be the one to welcome the master…" Mitsuri thought with jealousy.

"If I may master, before we start this meeting would you kindly enlighten us about this young swordsman right here, who it would appear has been able to not only fight the floor 1 boss one on one with an unknown breathing technique as well as claiming to have mastered Total Concentration Breathing in one month." Said Shinazugawa with a formal tone filled with nothing but respect.

"He didn't seem to have any social graces before, but now he's speaking so formally….this man must truly be special to have earned this much respect to have earned respect like that…." Tanjiro thought with interest

"But of course, I apologize for any confusion. Tanjiro is truly a special child that comes from a bloodline of many Total Concentration Breathing users, it is no surprise that he is a natural just like his kin, I would appreciate it if you would help nurture his talent to its fullest potential." Kagaya says softly, widening Tanjiro's eyes in confusion.

"This man knows my family history…but how can that be? I haven't seen him a day in my lifeuntil now." Tanjiro thought with great confusion as Gyomei puts his hands together and leaks tears from his blind eyes.

"Master…I will carry this order out with great honor as I help this boy grow." Gyomei says emotionally as Tengen points at himself with comedic sparkles flying around him.

"I am also all for this, I will make this boy the flashiest man alive!" Tengen says with a smile on his face.

"As for myself I shall do whatever it is you wish master!" Mitsuri says happily.

"I'll forget anyway, so I'm fine with it either way." Muichiro says with a bored tone as Giyu and Shinobu stay silent.

"I won't bother with him absolutely not, it'd be a waste of a Hashira's precious time." Iguro says with disinterest in his voice.

"Even if you didn't ask this of us master I already had an interest in taking this young lad on as my Tsuguko, I promise to train and look after him with my all!" Rengoku declares passionately, causing Kagaya to smile warmly before turning to Shinazugawa for his answer.

"This boy isn't the Hashira's problem, I ask that you let Tomioka be the one to train him, he's the one who knows Kamado." Shinazugawa says with annoyance.

Kagaya keeps his smile as he looks to the girl on his right. "The letter." Kagaya asks.

"Yes sir." The girl replies as she pulls out a letter and opens it. "A friend of the master, who is also the master of Taniro Kamado and Giyu Tomioka, Mr. Urokodaki, gave his last words for Giyu Tomioka to write down when he entered SAO. I shall read to you an abridged version, I ask you to allow Tanjiro and Giyu to join you in your quest through the game-" The girl says as her voice fades in Tanjiro's head and becomes that of the voice of Sakonji Urokodaki as he gets an image of the man in his head.

"Because of his hard work and natural talent, Tanjiro has been able to master Total Concentration Breathing in an astoundingly short time, even when his sister was put in a comatose like state from a tragedy, he worked nonstop to learn Total Concentration Breathing, and has shown to have a natural talent for it in the dance known as the Hinokami Kagura, I've have only seen it once yet I have seen the potential in this dance, although the situation sounds outlandish, it is in fact reality." Urokodaki's voice says as it fades back into the voice of the girl.

"Even though Tanjiro is skilled, I have sent in Giyu Tomioka who has willingly chose to not only protect Tanjiro, but to help him clear the game and return home to his sister in the real world." The girl says, causing Tanjiro to look over at Giyu with tears leaking from his eyes.

"Y-you're risking your life…..all so that I could see Nezuko again….thank you Mr. Tomioka…." Tanjiro thought with sadness as he wipes the tears from his face.

"Who cares why Tomioka chose to enter this game, it's all the more reason for him to take responsibility for Kamado!" Shinazugawa says with venom in his tone.

"Shinazugawa, even though you are right, that this isn't our problem, I still wish to train this boy, as the flame Hashira, I feel that it is my duty to guide him!" Rengoku proclaims.

"You do have a point, Sanemi." Kagaya says as he looks at Shinazugawa with a smile.

"So then?" Shinazugawa says

"What do you wish, master?" Rengoku asks questioningly.

"It may be that Giyu came in here only for Tanjiro, If he wants to train him that is fine with me, but if he allows it, you may take him on as your Tsuguko Kyojuro." Kagaya says, causing everyone to shift their attention toward Tomioka.

"If It requires me to then I will train him, but I feel that this Hinokami Kagura is more akin to flame breathing then that of water breathing, so it would be best if he trains under Rengoku." Giyu says, causing Rengoku to smile brightly at the man as Kagaya does the same with Sanemi just scowling at Giyu.

"Also there is one more thing that I'd like to relay to you my children that not even Tanjiro himself is aware of." Kagaya says catching the attention of everyone, but most of all Tanjiro himself.

"Wha-what do you mean? And that reminds me how do you even know my family history, I mean no disrespect but I haven't met you a day in my life until today…" Tanjiro asks curiously.

"You see Tanjiro, we actually have met, but you were just too young to remember, the Kagaya and Kamado families have been friends to centuries and their history together has and always will be recorded, not only that, but I was there the day you were born, it was a monumental moment that I got to meet the true heir of the Tsugikuni." Kagaya says with a smile, confusing Tanjiro.

"They were friends? What's a Tsugikuni and what's this about an heir? All this thinking is making my head spin…." Tanjiro says while trying to piece it together, causing Kagaya's smile to deepen to the rest of the Hashira's confusion.

"Long ago all the way back in the Sengoku period, there two twin brother's of a noble clan called named the Tsugikuni the elder brother was praised for being gifted and was trained to become a swordsmen while the younger brother was neglected and was going to be sent off to become a monk because of a "hideous" birth mark on the left side of his forehead." Kagaya says as he gestures to his own forehead, causing Tanjiro to look at the ground and touch his own birthmark.

"Turns out that birthmark was a gift after all because it granted the younger brother incredible physical prowess and the ability to see the bodies of living things in transparency or so it says, it's called the See Through World." Kagaya says, causing Tanjiro's eyes to widen as the other Hashira look at Tanjiro in surprise.

"Th-that's impossible right!?" Mitsuri asks curiously while in disbelief as Tanjiro looks down.

"It's true…for some reason, I've always been able to use this 6th sense that allows me to see the human body…..now I know why, I used it on the master and I could see that his body was being eroded by a deadly disease…" Tanjiro says, causing a smile to appear on Kagaya's face with the other Hashira looking at Tanjiro in surprise.

"Woah, that's incredible, now I want to be able to see it, it's gotta be flashy, show me!" Tengen says excitedly.

"That ability could be useful for both non combat and combat situations, you are lucky to have it, use it wisely." Shinobu says as Tanjiro nods with a smile.

Kagaya puts a finger on his lips causing everyone to calm down, letting him get back to the story.

"The Younger twin grew up very differently from the Elder twin, he was given a much poorer education as well as poorer food to survive on, the younger twin never spoke and was thought to be deaf, his mother in tow made him Hanafuda earrings in hopes that the gods would bless him with the ability to speak, he was also frequently seen clutching his mothers side, the poor boy was found pitiful by others, even by his own elder twin brother, the elder brother often snuck behind their fathers back to see the younger twin, one day when they were only 7, the younger twin smiled and spoke for the first time in his life, declaring that he would become a samurai like his elder twin brother, however the elder brother was dismissive of the beautiful moment because it was well known that the younger brother was going to be sent off, even so one of the elder brothers teachers decided to humor the younger brother by showing him a simple stance, unexpectedly the younger brother defeated the swordsman with only four blows, shocking the elder brother who couldn't even land one, despite all of his training, but the younger brother was ashamed of his actions, he couldn't stand the feeling of hitting someone and renounced his attempt to become a samurai, the elder brother often asked the younger brother about his brothers newfound strength, what the younger described what was likely an early form of a breathing technique, but rather than talking about the training, he talked about wanting to fly kytes with his older twin brother instead. When their mother passed away from her illness, the younger brother went to the elder one's room to tell him about the news and bid him farewell, planning to leave for the temple he was being sent off to that night, it was later revealed to the elder brother through their mothers diary that the younger knew about everything there mothers illness, how it weakened there left side, and how the younger brother frequently trying to help her move around the younger brother left the temple before his father could find out about his newfound sword skills and make him his heir because it would mean the elder brother would be sent off to the temple to become a monk instead. Though despite his kind act the elder brother developed an intense hatred toward the younger brother for continuing to surpass him in every little thing and for showing gratitude to gain seemingly nothing. After one day and one night of running without any sign of exhaustion the younger brother met a girl around the same age whose entire family had died, after ten years they married and the wife became pregnant with the younger brothers child, just before the expected arrival, the younger brother left home to summon a midwife, promising his wife to be back before the sunset, on his way there however he met an old man and lost too much time helping him that he ran home and decided to summon one the next day, but to his horror when he arrived home his wife had murdered." Kagaya says getting a gasp of horror out of Mitsuri and saddened looks out of the other Hashira.

"This tragedy hit the younger brother hard, but there was still one thing left for him, a child in the arms of his wife, it was his child, whoever had murdered his wife couldn't bring themselves to kill a child, so the younger brother took the child and started to travel around Japan, picking up the sword once again and creating the first ever breathing style in his training, others tried learning it alongside his travels, but they could never fully learn it and move the way the younger brother could, so he modified it and made the breathing fundamentals now known as Water, Flame, Wind, Stone, and Thunder. Eventually the younger brother remembered his old friends he made way back, he met back with his old friend, and told him his entire story from beginning to end. Reminded by his wife's death hurt the younger brother and he grew despondent, but then his friend's daughter came up to him, asking for a hug, causing the younger brother to break down in tears and embrace her. The younger brother was asked to perform his breathing style's forms and he kindly did so, passing both his breathing style down and his Hanafuda earrings that he wore, but most of all he left his child in there care, those friends the younger brother had were known as the Kamado family and that child he left eventually married into the Kamado family. You, Tanjiro Kamado, are the descendants of the first breathing style user, this Hinokami Kagura dance is the first ever breathing style, you are the Tsugikuni's true heir." Kagaya says, causing Tanjiro to widen his eyes, taking all of this in before smiling and leaking a few tears before looking up at Kagaya with a smile.

"Thank you for telling me all of this…..hearing that just gives me all the reason to work harder, I promise I won't let you down, I will clear SAO!" Tanjiro yells with a teary smile, causing Kagaya to smile at him along with most of the Hashira.

"Then it's official you will become the Tsuguko of Kyojuro Rengoku, both of you will leave tomorrow at daybreak to the second floor. I wish you good luck, for now you must forgo your wares for our uniform." Kagaya says causing Tanjiro to look at him confused

Timeskip - 20 minutes later

We see Tanjiro now standing inside the build with a new Demon Slayer Uniform on under his green checkered haori with it being Dark Brown like his master Rengoku's with his tabi socks matching the same color as the uniform, he now wears bands of white cloth that wrap around his calves into a button clip like Giyu has, resembling Kyahan but with a pair of white zori sandals with the same red strap color as Rengoku's zori sandal straps.

"Now that you are properly fitted with our uniform there is something you must know about it, it is made from a special material that will grant the uniform better stats each time you level up so that the uniform will protect you on all floors no matter where you are, it depends on you, next thing is that it protects you from low leveled weapons like small daggers and of the such so you won't have to worry about someone like a orange player with a cheap weapon that may attack you, lastly with that uniform we use a special kind of sword that I'm sure you have seen many times before." Kagaya says, causing Tanjiro to get flashbacks of Shinobu, Kanao, and Shinazugawa's swords and how they were colored.

"Yeah It's the colored katana's Mrs. Shinobu and Mr. Shinazugawa have right?" Tanjiro asks with a smile, causing Kagaya to nod as he gestures for the girls to bring out the swords box container in which they do as they unwrap its cloth and present it to Tanjiro who looks at it curiously.

The sword is a katana with a silver top piece and a black grip with red diamonds on it, the blade also has a black circular rim like guard with a black Saya with the same silver like end piece as the top. "Go on Young Kamado, draw your blade, no matter what color it is you will be a fine swordsman." Rengoku says with a bright smile filling Tanjiro with relief.

"Nichirin swords are known as color changing Katana's, because depending on who wields the sword they change color." Shinobu says with a smile on her face as Tanjiro looks the blade he holds and unsheathes it and gives it a quick look before holding it up in his hands for everyone in the room to see, shocking Tanjiro as it begins to change color, but shocking everyone else at it changing to the color black.

"Oh my." Shinobu says teasingly.

"Black that's not very flashy" Tengen says disappointed.

"A black blade, how unfortunate!" Rengoku says before chuckling to himself.

"It's like a black hole, empty." Muichiro comments hazily.

"By the gods, I pray for this child's safety…." Gyomei says while praying with tears leaking from his eyes

"Tch, no matter what color it turned it's all the same." Shinazugawa says.

"That's an interesting color that your blade has taken." Kagaya says, causing Tanjiro to worry about all the comments.

"Why! Does turning black mean something bad!? Is it unlucky…!?" Tanjiro asks worriedly, causing Shinobu to smile.

"No no, it's nothing bad, it's just not a very common color among Demon Slayers." Shinobu says, causing Rengoku to pitch in.

"I have yet to meet someone with a black blade, but I hear they have no idea what style to master." Rengoku says, causing Tanjiro to look down with a frown deep in thought. "There is no need for you to worry, I will train you!" Rengoku yells with passion causing Kagaya, Shinobu, Mitsuri, Gyomei, and Tengen to smile at his enthusiastic behavior.

"I can't wait, Mr. Rengoku!" Tanjiro says with a smile.

Timeskip - 1 day later.

We see Tanjiro getting ready to leave the butterfly mansion as he sees Kanao sitting down while looking at the ground, smiling as he runs up to her.

"There you are! Hey Kanao! Me and Mr. Rengoku are heading out now, thanks for everything, you were a big help in both my training to master Total Concentration Constant and in the boss raid." Tanjiro says with a smile only to get a silent one from Kanao, making him nervous for a second until watching Kanao pull out a coin. "What's that?" Tanjiro asks as Kanao flips the coin before catching it and revealing it as tails, causing her to look at Tanjiro.

"All I did was follow the teachers orders, and so there's no need for you to thank me, farewell." Kanao says with a smile, causing Tanjiro to smile brightly.

"She actually talked to me!" Tanjiro thought excitedly. "What was that you just flipped?" Tanjiro asks.

"Bye for now." Kanao says with a smile, brushing off his question.

"Money? It says Heads and Tails huh, why did you flip it?" Tanjiro asks.

"Goodbye" Kanao says with a smile, trying to brush Tanjiro off again.

"You sure made that thing spin." Tanjiro replies with Kanao responding by showing him the coin.

"I flip this to help me decide things that weren't ordered, just now I decided to speak to you or not. Don't speak was heads, and do speak was tails, and tails is what it landed on, farewell." Kanao says before smiling at Tanjiro, finally answering his question.

"Why don't you choose for yourself? Which do you want to do?" Tanjiro asks with a smile.

"It doesn't matter, nothing matters to me so I can't decide for myself." Kanao says with a smile.

"I don't think there's anything in this world that doesn't matter, I guess….the voice in your heart is just really tiny. Hm…following orders is important to an extent but…" Tanjiro says before getting an idea. "Hey can I borrow that?" Tanjiro asks.

"Uh…S-sure" Kanao agrees hesitantly before passing Tanjiro the coin.

"Thank you." Tanjiro says before running forward in front of her. " Ok we're gonna use this to decide!" Taniro says excitedly.

"Decide?" Kanao says questioningly.

"Whether you'll listen…to your own heart….from this point on!" Tanjiro says as he flips the coin, accidentally flipping it way in the air.

"Woah! I flipped it way too high!" Taniro says worriedly. "Heads! Let's make it heads, if it comes up as heads you're going to follow your heart!" Tanjiro says as a breeze suddenly kicks up, causing Tanjiro to sweat a bit nervously. "Huh!? Hey, where did it go!? Uh uh uh!" Tanjiro says while frantically trying to find the coin in the air. "Oh, is that it!?" Tanjiro says as he backs up and catches the coin on his hand. "You see that Kanao! I got it!" Tanjiro says happily as he runs up to her. "Are you ready?" Tanjiro asks.

"Which will it be…his black was blocking it so I couldn't see which way it fell." Kanao thought nervously as Tanjiro reveals the coin as heads, causing him to jump cheeringly.

"It came up as heads!" Tanjiro says as he holds his arm out. "Here you go!" Tanjiro says as Kanao holds her hand out with Tanjiro grasping it while looking at her, surprising Kanao.

"Remember, it's the heart that drives people! So it can grow as strong as you need it to! Alright, cya later!" Tanjiro says before running off, causing Kanao to fall out of her stupor and stand up to ask him

"How? How did it come up heads!? Kanao asks, frantically searching for an answer causing Tanjiro to look at her questioningly. "I saw his hand when he flipped it, I'm sure he didn't cheat but still….." Kanao thought as Tanjiro smiles at her.

"Just by chance, although, if it were tails, I was gonna keep tossing it till it finally came up as heads." Tanjiro says before smiling bright with a chuckle, causing a new fire to light up within Kanao as the wind kicks up around her a bit. "Take care of yourself!" Tanjiro says before running off as Kanao looks at the coin and holds it close.

Tanjiro continues on his path in his new uniform with his new Nichirin sword on his left waist side before noticing Rengoku waiting for him before the man notices Tanjiro approaching.

"Ah Young Kamado, are you ready to head out?" Rengoku asks while crossing his arms with a smile on his face.

"Yes sir, I'm all set!" Tanjiro says before looking to his left noticing Giyu standing there causing him to smile as he looks back at Rengoku. "Actually, just give me one second." Tanjiro says as Rengoku watches the boy run over to Giyu with a smile.

"Tomioka!" Tanjiro yells as the Water Hashira looks at him with the same stoic expression.

"It's been a long time, heading into battle now?" Giyu asks with the same stoic tone as usual.

"Yes sir!" Tanjiro says with a bright smile.

"I heard from Kocho that you've mastered Total Concentration Constant." Giyu replies.

"I have!" Tanjiro says excitedly.

"You should keep at it, with your potential and heritage, you could surpass all the Hashira combined." Giyu says with a hint of pride at seeing Tanjiro's growth, causing Tanjiro's smile to grow brighter.

"Yes sir, Tomioka….about you entering this game, thank you very much, the fact that you willingly put your life on the line for me, just so I could see Nezuko again, I had no idea, I don't know how to ever repay you…" Tanjiro says gratefully as Giyu turns to his left.

"You can thank me, by doing your best work, our mission is to protect everyone in SAO, even if it means killing others to do so, that is all, got it?" Giyu says before vanishing in a flash step, causing Tanjiro to smile seeing the man disappear.

"Got it!" Tanjiro yells before turning back to look at Rengoku who nods with a fiery smile and signals Tanjiro to run over to him, causing the boy to run back over and do so.

"Come now young Kamado, the second floor awaits!" Rengoku says as the two pull out teleport crystals and teleport to the second floor, leaving nothing but the air behind.

To be continued…..
YES I'M FINALLY GETTING TO THE GOOD STUFF IN THIS STORY, OH I LOVE WRITING WITH RENGOKU'S CHARACTER, So let me rephrase the ship of this story first in case you haven't figured it out, it's going to be Kanao/Sinon so Tanjiro is going to have two mates but for now it'll just be Kanao since Sinon didn't enter SAO but I have already set that romance up in the first chapter so please stay tuned, sorry this chapter isn't as long as the last one but it came out waayyy earlier than the last one cause the last one took me a bit, surprisingly this one should have taken me longer since there's only the Hashira meeting arc to use as basis but I managed to rewrite the Hashira meeting Arc and hopefully it is to your liking I know I certainly like the way I did it yes I know making Tanjiro the descendant of Yoriichi makes him related to Muichiro BUT THAT IS FOR A LATER CHAPTER otherwise I'd have no story to play with when writing this What if, by the way for anyone making a Youtube video on this what if IF YOU EVER DECIDE TO THAT IS just make the title What If Tanjiro Was Born Into The World Of Sword Art Online, there's your title so please use it wisely anyway next chapter will be amazing even though it'll be a timeskip, oh and another thing before I end this note, I WILL NOT BE DOING ALO I'm going to be skipping that arc and will try to replace it, it will still exist but I plan on making Tanjiro one of the kidnapped victims of Sugo, which means FLASHBACKSS OF AN INHERITED MEMORY so please bare with it but with enough spoilers, hope you enjoyed this chapter PLEASE LEAVE A REVIEW ON WHAT YOU THOUGHT IT HELPS SIGNIFICANTLY WITH WRITING THIS IM BEGGING YOU oh and yeah Kirito exists SO THINGS LIKE QUETSIONS LIKE THAT AND WHAT YOU THOUGHT ABOUT IT HELPS A LOT so this is Gold signing off so for now stay tuned and leave a review!