It's been 15 days and you're excited because your sword is arriving today! After breakfast you pull Tanjito outside of the house and make him wait with you for Haganezuka to arrive.

"(Y/N) chan, we've been standing outside for twenty minutes. I think they may come at a much later time." Tanjiro spoke.

"Hush, child. We must be here for when the Sword God arrives." You said.

She's only a year older than me, Tanjiro sweat drops. A bell chimes echo in front of them, making you squeal. There stood the lord of sword making, Haganezuka wearing his fancy hat.

"Welcome to our humble home!" You greeted.

"My name is Haganezuka. I have forged Kamado Tanjiro's and (L/N) (Y/N)'s swords and I'm here to deliver it." He introduced himself.

"Well you found them! We're looking forward to seeing what you made!" You beamed.

Tanjiro is shocked at how causal you're acting towards him and bows at the sword maker. "Um. I'm Kamado Tanjiro and the (h/c) hair girl next to me is (L/N) (Y/N)." He said. "Please come on in." Tanjiro is shocked when Haganezuka ignores him and begins to unwrap the box he was carrying.

"These are the Nichirin swords and I forged them." Haganezuka continues.

Tanjiro gestures at the house. "Um, please come inside for some tea-" You cut him and shook your head.

"Let him speak." You whispered.

"The materials for a Nichirin sword can be obtained from the mountain closest to the sun. Scarlet Crimson Iron Sand and Scarlet Crimson Ore. These produce steel that can absorb sunlight. Mt. Yoko is bathed in sunlight all day long, you see."

Urokodaki finally comes outside and sees that Haganezuka has arrived. He saves Tanjiro by gesturing to come inside. You on the other hand don't mind Haganezuka's excitement, but you also went inside. "There he goes again, never listening to what others say." Urokodaki grumbles.

Haganezuka zooms up close to Tanjrio's face. "Hey, you're a Child of Brightness, aren't you? Now that's what I call lucky." He stated.

"Oh, no. I'm the son of Tanjuro and Kie." Tanjiro replied.

"That's not what I meant. See how your hair and eyes are a reddish color? When a kid like you is born to a family that works with fire, it's considered lucky and a cause for celebration." He explained, while poking Tanjrio's cheek.

"He's right, Tanji. Your presence always brightens up my day!" You agreed. Haganezuka zooms up close to your face and gently pulls your (h/c) hair.

"And you must be the Maiden of Warm Light. Your (e/c) eyes show warmness that can thaw a man's frozen heart and your (h/c) hair invites light to a dark world." Haganezuka added.

"Um...thanks? I guess." You shrugged. I have no idea what he's talking about. I'm not even a good person to begin with.

"There's a good chance both swords will turn red and amber! Right, Urokodaki?" He asked.

"Yeah." Urokodaki agrees.

You and Tanjiro got handed your swords and everyone sat down in front of them. You admire the and handle of it first. The sheath is a beautiful black color with wisteria decorated around it and the handle is wrapped around with a lavender lanyard and has gold diamonds on it. You also appreciate that Haganezuka added a hook on the bottom of the sheath for you to put the chain on.

"What are you two waiting for? Hurry up and draw it!" Hanagezuka exclaimed. "Nichirin swords are also known as 'Color Changing Swords'. They change the color depending on the bearer."

"You go first, Tanjrio." You said.

"Okay!" He nodded. He removed the sheath and watched as the blade changed color. You weren't pretending to be mesmerized when the blade turned to black. It was amazing to see it in person.

"Black!?" Haganezuka yells.

"It's black, huh?" Urokdaki mutters.

"Sugoi." You awed with heart eyes.

"Is it bad or something when it turns black?" Tanjiro panics. "Is it unlucky?"

"No, not necessarily. But you don't see this pitch black too often." Urokodaki replies.

"And I was hoping to see a bright red sword! Damn it!" Haganezuka yells. He then proceeds to attack Tanjiro.

"Ouch! Stop it! Please calm down! How old do you think you are?!" Tanjiro yells.

"I'm 37!" He answered.

Time to save him.

"My turn!" You chirped.

In a blink of an eye, Haganezuka is already sitting down in front of you. You waited for Tanjiro to calm himself down. Taking a deep, you slowly removed the sheath. You don't care what color you get, as long as it changes color you're good. But your smile slowly drops when you see the blade lose color. The others gasped as your blade became crystal clear, like it's see through. You put your sword in front of your eyes and you can see Urokodaki and Haganezuka perfectly clear through it. You begin to panic when you see the mad sword maker's body begin to tremble.

"That...that is..." Haganezuka begins to growl.

Tanjiro suddenly throws himself in front of you. "I'll save you, (Y/N) chan!" But the attack never came. Instead Haganezuka is jumping around in...joy? Or is it frustration?

"You took away the color!? How is that possible?! I've never witnessed anything like this!" He yells.

Tears begin to build up in your eyes. "I-I'm sorry." You whimpered.

"I'm so happy I witnessed something so peculiar!"

"Eh?"

Haganezuka somehow comes between you and pushes Tanjiro out of the way (poor boy went flying to the wall) to tightly embrace you. And holy shit! That guy is strong! You can feel your lungs getting crushed. "Can't...breath..." You groaned.

"A transparent sword...that's unheard of. I don't know what to make of it." Urokodaki admits.

Leave it to the outsider to have a weird ass color. No wait! My blade doesn't even have a color! What kind of mary sue bull shit is this!?

Pedro and Matsuemon suddenly flew by and landed on the window.

"Kamado Tanjiro!" Matsuemon exclaimed. "Here are your orders!"

"It talks?" Tanjiro mutters.

"Oh? You didn't know that?" You asked.

"Make your way to a town to the northwest! Young girls have been vanishing there! Night after night, young girls have been vanishing! Hunt down the demon lurking there and kill it! Kamado Tanjiro, prepare yourself for this task! This is your first assignment as a Demon Hunter!" Matsuemon orders.

Pedro turns to you. "What he said, (L/N/) (Y/N)!" He responded.

He's not much of a talker, you sweat drop.

"Our first assignment?" Tanjiro gasped.

You twirl your sword around and smirk. Time to kill some swamp demons!

You put on your demon slayer uniform on and then secured your brand new sword in your belt. You also wrapped the chain around your waist so it won't drag on the floor. You're uniform has been slightly alter to give yourself...ahem...a bit of a sex appeal. You've cut the pants into the length of booty shorts to bubble up your butt and you used the legs as thigh stockings to show some bit of skin. After putting on the uniform, you put on your red haori that is decorated with golden wisteria flowers on it. The haori is something you made yourself from the fabric of our old kimono and the wisteria flowers you sew yourself.

"Have you both gotten changed?" Urokodaki asked.

"Yes!" They both answered.

The two of you are sitting in front of Grandpa. Nezuko actually crawled under your haori and is hugging you from behind. "Now that you've started out with the Demon Slayer Corps, I'd like to explain a few things to you both." He began. "Those Demon Slayer outfits you're wearing right now are made of a special kind of fiber. The fabric is quite breathable, yet it repels moisture and won't burn easily. A low level demon's talons or fangs couldn't even manage to tear that uniform."

"Cool." You said.

"Also, those Nichirin swords of yours. The color varies from owner to owner, and each hue has unique properties. But since not many people end up with black blades or transparent blades, little is known about them. Especially in (Y/N)'s case. What I do know about black blades are said to be wielded by swordsmen who'll never go far." He reveals.

It's because I don't really belong in this world, but they'll never believe me.

"I don't know how I'll do in the Demon Slayer Corps, but I'm going to turn Nezuko back into a human no matter what." Tanjiro smiles.

"Me too! I'm gonna hunt demons down and find my-" You stopped yourself short when you realized you were about to reveal your predicament with your brother. "And find my true peace to help others." Nice save!

"Yes, you're both right. I have faith that you're both going to make that happen." Urokodaki agreed. You both nodded. He takes out a wooden box that was next to him. "One more thing, it's a box for you to carry your sister in during the day. Built out of an extremely light wood called 'Cloud Mist Pine'. I coated it with rock lacquer to reinforce its exterior and make it even more durable." Urokodaki explains.

Tanjiro picks up the box and his mouth drops. "It's so light! It's really light, Urokodaki sama!" He exclaimed. He then hands the box over to you. "Try it, (Y/N) chan."

You get up while Nezuko whines in disappointment that she's no longer hugging you. You lift the box up and to your amazement, it's light as paper. You then set the box down and open it. "Nezuko, sweetie. Can you please get inside the box so that the three of us can be together?" You sweetly asked. Nezuko dashed inside the box. "Good girl!" You beamed.

Tanjiro picked up the box and carried it on his back. The both of you stepped outside and faced Urokodaki.

"All right, we'll be going now." Tanjiro said.

"Hold on." Urokodaki replied. He walks over to Tanjiro and buttons up his collar. He then walks over to you and tries to close your haori as much as possible. Urokodaki finishes off by patting both kids' shoulders. You couldn't help but to hug him before running off.

"Goodbye, Grandpa! I'll be sure to write to you!" You waved off.

The two of you followed Pedro because you have no idea where the fuck northwest is. Meanwhile, Tanjiro is trying to talk to his sister, but Nezuko isn't responding.

"Oh, I see. You're probably sleeping to recover." Tanjiro smiled.

"Better for her to sleep for months than to eat humans." You replied.

"Right!" He nodded. He then looks at your red haori and smiles more. "By the way, I love what you did to your haori. It really shows your love of grapes."

"Huh? What grapes?" You asked. He points at the wisteria pattern. You took off your haori and examined it. Grapes. Flowers. That's when it hit you. "Oh my God! I done fucked up! They're supposed to be wisteria flowers!" You freaked out.

"Ah! (Y/N) chan!" Tanjiro shouted. He gets very worried when he sees you on your knees and literally crying out a river.

After your mental breakdown, the two of you finally made it to town. You nudge at Tanjiro's arm and gesture at a young man sporting a bruise on his face, Kazumi. People around him pitted him for losing his girlfriend last night. "I think we should check him out. He has the same eyes as us." You suggested.

"You may be right, (Y/N) chan. I can smell his sadness." Tanjiro agrees. The two of you ran after him.

"Yoo hoo! Kazumi kun!" You called out. Kazumi stops walking and slowly turns around.

"H-How do you know my name?" He softly asked.

Fuck me! Why don't I have self control?! After composing yourself, you pointed out that you overheard the villagers talking about him.

"If you don't mind, we'd like to hear your story." Tanjiro said. "If you don't mind."

Kazumi looked shocked at the fact someone is there to actually listen to his story. He led you both to the spot where his girlfriend, Satoko, vanished into thin air. But you know she actually got pulled underground. "You may not believe me." Kazumi mutters.

"We do believe you! We believe you alright!" Tanjiro exclaimed.

"But...Why?" Kazumi gasped.

You turned around and showed your sword that is in your belt. "Because we're certified demon slayers!" You answered.

"Demon...What..?" Kazumi mutters. Tanjiro got on all four and began to sniff the ground. This is gonna take a while. I know the demons come out at night. The whole day the two of you followed Tanjiro around until the night. "I want you guys to believe me." Kazumi repeated.

"And we do believe you. That's why we're here." Tanjiro said.

"Don't worry. We're professionals." You added. Oh God, why did I say that? He'll probably expect too much from us. Then you saw the familiar path where Tanjiro finds the swamp demon. "Tanjiro! I sense something evil around that area!" You pointed.

You and Tanjiro took off, leaving Kazumi behind. He was amazed to see the two of you jumping on rooftops with ease and running like the wind. Tanjiro runs over to the path and pulls out his sword to stab the exact location of the swamp. A body floats up and you immediately pull the girl up. The two of you jumped away from the swamp portal in time to see the demon's arm sticking out. Her sleeve got ripped from the demon's attempt to grab her. A gothic looking demon arrives from the portal.

"Where are the girls you kidnapped?!" Tanjiro demanded. The demon only responded by grinding his teeth together and a weird noise came out of it. "I've got two more questions for you!" He added.

The demon goes back inside the swamp and disappears. Kazumi soon joins you and is rather shocked by what he saw. "Who was that?" He gasped.

"That was a demon, good sir." You answered. You hand over the unconscious girl to him and pull out your sword. "Please look after her while we hunt this demon down." You smiled at him.

Is her blade clear? Kazuki wonders.

"Stay close to us so we can protect you." Tanjiro said.

You and Tanjiro are on guard for the demon. You especially because you know he can split himself off and you don't have a keen sense to warn you. Tanjiro found the demon and is ready to attack, but you knew this is the part where the demon shows up with two of his clones. "Tanjiro, watch out! There's three of them!" You warned him.

"Three!?" Tanjiro gasped. Luckily he trusts you and jumps up in a nick of time to see six arms trying to grab him. "Water Breathing, Eight Form: Water Basin!" Tanjiro exclaimed. He lets out a powerful swing at all three of them. Unfortunately he didn't cut their necks.

You quickly hook your chain onto your sword and throw it to impale the one on the far left. You swing the chain over to pull the demon away from the clones. The other two quickly disappeared into the swamp. The demon you had impaled used your sword to cut out his torso to free himself and quickly regenerated his body.

"Tanjiro, focus on the two missing one. I got this one." You said.

"You got it!" Tanjiro nodded. He closed his eyes to detect the missing demons. One of them prepared to ambush Kazumi and the unconscious girl, but was quickly stopped by Tanjiro.

The demon tried to claw at you, but you gracefully blocked his attacks with your blade. "Dance Breathing, Seventh Form: Zumba!" You shouted. You spin your chain around to mimic the speed of a chain saw. You attempted to cut his limbs to limit his movements, but the bastard retreated inside the swamp like a coward. "Damn it!" You muttered.

"You bastard! Back off for crying out loud!" The demon suddenly yells. "That girl's gonna go stale on me, damn it! That girl's already 16,okay? If I don't devour her soon, she's gonna lose flavor by the second!"

Hearing how this demon compares the girl, no, woman in general to a meal, pisses you off. "You piece of shit! Girls are not food you can judge off!" You screamed. Then you suddenly yelled when one of the clones managed to appear behind you and covered your mouth. You tried to swing your sword at him, but he grabbed your wrist and made you throw your sword away.

"(Y/N) chan! You get away from her right now!" Tanjiro screams.

"Calm down, my other self." Demon 2 spoke, completely ignoring Tanjiro. "I've already fed on plenty of 16 year old girls in this town." He smirked. You felt a shiver run down your spine when demon 2 starts to sniff you. "This girl is also 16 and has the smell of freshness to her. I'm sure her flesh will be nice and moist."

"Mmph! Eeemm! (You mother fucker!)" You muffled.

"You monster! Return Satoko to me. The one you abducted last night!" Kazumi begged.

"Satoko? Who are you talking about?" Demon 1 opens his vest to reveal a collection of hairpins. "If her hairpin is among these collectibles, then I devoured her."

Poor Kazumi starts to cry when he sees Satoko's ribbon among the collection. Another human lost a loved one to demons and that makes your blood boil. You lifted up your arm and elbowed demon 2 with all your might. The sound barrier must've been broken since you send the demon flying through a concrete wall. You ran to where your sword was laying and picked it up.

Demon 1 and 3 begin to attack. Tanjiro is doing a great dodging due to his nose, but you, not so much. You tried to dance your way around demon 3's attack and for a moment it was working. But he went inside the swamp and you have no idea where he'll strike first. You grip both the chain and sword tightly while you look both ways. Where is he gonna appear? You fail to see the portal appearing behind you and you feel a harsh kick in your back. You grunted as you painfully rolled on the ground. The impact made you see double.

"I got you now, girl!" Demon 3 exclaimed.

Your (e/c) eyes widen when you see his hand aiming at your face. You couldn't move. You were too afraid to block the attack. The box suddenly burst open and demon 3 got kicked far away from you. Nezuko Kamado has joined the battle.