You Become Priority #1

[Two days later, a couple minutes before Tanjiro arrives.]


"WHAT THE HELL IS THIS PLACE?!" You shouted in the middle of the crowd. People started to look at you funny as you started getting excited and scared at the same time. You started zipping from place to place. "The buildings are tall!!  It's night and bright out!! Everything here is so different!!!"


"Wow, alright! Focus!" You said and looked around. "There's so many people here, it's hard to tell which one is the one I'm looking for. Welp, guess I'm back to using my nose."


You smelled traces of a demon, but none that stood out to you. "Sigh... I guess I have to go on and look manually. No shortcuts this time."


You started to walk and ask around to see if anyone's heard anything suspicious in the area. Most of the people waved it off as being a nice area with little to no trouble, somehow, you just doubted that. After all, "I wouldn't be sent here if it's so squeaky clean. They gotta make it so difficult! If that stupid raven wouldn't have flown away, none of this wouldn't happened!"


In the distance, Muzan looked out from his hotel window holding a child. He saw you but then noticed your demon ears. "Hmmm...? What is the meaning of this..? I told demons not to be in my territory.."


"Daddy?" The girl said as Muzan smiled. "Can we go see Mommy?"


"You know, I was thinking the exact same thing." He said and left the hotel to catch up to you, and who knows what will happen. You were seen walking with the crowd, well, against the crowd. Until...!


"?!" You immediately started darting the other way and moving people out the way. "What the hell?! That smell! I know that smell from anywhere!! The same smell that was at Tanjiro's house!!!"


You ran forward and looked up and left. To see him, the one who started it all. "Muzan Kibutsuji!!"


Muzan looked at you in confusion as you and him came face to face. "My curse... should've killed him... not only that... wait?!"


You started to pull out the Tessaiga and you didn't even care if he had a child in his hands. Muzan gained demon like eyes. "You've... You've been in the sun...! I can smell the warmth on you! Could it be?! You could be the final piece...?!"


"So what, you pale son of a bitch?!" You shouted and started to draw your sword out. "I don't care! I don't care what happens! If I can cut off his head now, I can end this whole thing! Wait...wha-?!"


You heard it... you heard them...and you froze. You gained fear in your body, as Muzan slowly grew closer to you. When suddenly, Muzan was turned around. You and him both looked behind him to see Tanjiro. "T-Tanjiro....?"


"Y-Y/n...?" Tanjiro said but saw the look of fear in your body, he could smell it. Tanjiro then saw the kid.


"Daddy! Who are these people?" The girl asked as Tanjiro started shivering. You held kept hearing the beats and froze with your hand on the sheath.


"Is there something I can do for you two? You appear to be quite upset." Muzan acted.


"This bastard! He's pretending to be human!" You said but the sound of his hearts beating filled your ears, you felt his stare locked onto you. As if he could consume you, if looks could kill. "This bastard...he has at least seven hearts!!! No matter how hard he tries to hide them!! I hear em'!!"


"Oh dear... what's wrong?" A woman came to his side.


"Mommy!" The girl shouted as you started to put away The Tessaiga as Muzan seemed to recognize it.


"Do you know these boys?" She asked Muzan and he played along.


"No. Not at all. What a nuisance. I don't know them at all." He said and peeked behind him. "Perhaps they have.. mistaken me for someone else?"


Muzan cuts into a man's neck with his claws. "NOOOO!!!"


After you shouted, then man tried to eat his wife. He bit into her shoulder and screamed. People were freaking out and screaming. Tanjiro tackled the man down as you ran by Muzan. You glared at him with your demon ears as your sclera turns red for a brief moment. "Run, hide, and send as many as your goons to kill us. I'll make sure to be the one to kill you."


"I'm not gonna kill you, boy. You've just shown me that you're more special than that standard." Muzan said as you gritted your teeth and ran to the lady. Muzan looked at your appearance and gained demon eyes in rage. A younger Muzan(nothing more than a 30 years ago) is seen as Inuyasha is seen with the Tessaiga, holding it at his neck. "It all makes sense now, that damn mutt had children. This time... I will get his power."


Tanjiro filled his mouth with some cloth. "DEAR!!!"


"Worry more about yourself!" You ripped someone's robe and gave her some. "I don't have time to do it for you! Put this in on the WOUND NOW!!!"


She did just that as Tanjiro wrestled with the man before you helped him out. You see Muzan smirk at you as he walked away. "MUZAN KIBUTSUJI!! I PROMISE THAT I'LL TURN HER BACK!!! AND IF THAT MEANS I'LL HAVE TO GO SLICE THROUGH EVERY HEART AND EVERY EXTRA ORGAN, SO BE IT!!!!!"


"WHEREVER YOU GO... YOU WON'T GET AWAY FROM ME!!" Tanjiro shouted at Muzan. "I'LL FOLLOW YOU TO THE DEPTHS OF HELL... AND YOUR NECK WILL FEEL THE EDGE OF MY SWORD!! I WILL NEVER... FORGIVE YOU!!!!"


"You two! What are doing?!"


"Are they drunk?!"


"BREAK IT UP!!!"


The police started showing up and trying to handcuff you. "GET OFF!!"


You head butted one down as the rest tried to take you down. "GET HIM!!! KNOCK HIM DOWN!!!"


You found yourself taking batons and metal batons all around your body as Some of the cops looked at the man, you felt yourself losing your hearing ability and stopped. The last noise you heard, was the sound of blood dripping. Meanwhile, Muzan is seen snapping his fingers in an alley. Two demons appear. "We will do as you wish."


"Bring me the head of the demon Hunter with the earrings that look like Hanafuda cards. And bring me the silver haired hybrid with mutt ears, alive." He said as your eyes suddenly shot open.


"What the-? Where am i?!" You shot your head up from the soft pillow. "MUZAN! THAT BASTARD! WHERE IS HE?!"


You felt warm hand on the side of your face before they gently dragged it back down to the pillow. You finally saw what was Nezuko, with a peaceful expression, once again gliding her hands through your hair and messing with you dog ears. You figured if you took off the bamboo, she'd be smiling. "Wow... so beautiful..."


You immediately gained a big blush. "W-W-What?! W-What I meant to say was-!"


She simply hummed some more in happiness and petted your dog ears even more... "Huh...? Did...did she got question that? She didn't react to that...It's more like... she kn-"Y/n! You're up!"


Tanjiro interrupted your thinking so you waved it off as nothing. You sighed at him. "I'm pissed. I can take demon but not metal batons...? I guess it's time to up the training or retire as a demon slayer."


"Don't be so hard on yourself. To be fair, there were a lot." He said as he then looked at Nezuko. "Sorry to leave you alone, Nezuko."


She didn't move, but nodded her head at Tanjiro. He looked at you and your blush before pulling you up. Nezuko then followed. "It's like dominos..."


You smelled the air and you gained an angry look along with Nezuko. "Who the hell are you?"


"That's not important, Mutt. I'm not doing this for you, I have no need to answer you." He said as you only got more pissed.


"Were you waiting for me? I could've followed your scent, but..." Tanjiro said as the man glared at him and you.


"We're under a concealment spell, so there's no way you could trace us. Besides..." He pointed to you and Nezuko. "Isn't that mutt a demon or is he a human? Not only that, is she a demon? She more like a hag."


"WHAT DID YOU JUST SAY YOU BASTARD!?" You shouted and got in his face. "I DONT CARE WHAT THE FUCK YOU ARE!!! CALLING A TOWN BEAUTY LIKE NEZUKO A HAG IS A DEATH SENTENCE!!"


"Let's go, Mutt." He said and walked away.


"HEY! WE AREN'T DONE HERE!! GET BACK HERE, YOU LITTLE SHIT!!!" You shouted as you went through the hidden wall and went to the room. "HEY!! LOOK AT HER, YOU ROTTEN BASTARD!! WHAT, WHO DO YOU THINK LOOKS BETTER THAN HER!?!"


"Welcome back." A lady spoke as you started to laugh.


"AHHAHAHAHAHA!!! YOU THINK SHE'S MORE BEAUTIFUL THAN NEZUKO-?!" You shouted as the man hit your chest.


"SHUT IT. You worthless little-"STOP!" The lady told the boy as you had half the mind to slay this little shit right now.


"Are they alright? Sorry to just leave them to you." Tanjiro said to the woman as she touched the man's head.


"This woman will be alright. But her husband... it's unfortunate, but we must confine him to an underground cell." She said as Tanjiro looked concerned.


"Isn't it hard for you to treat people's wounds?" Tanjiro asked as you caught the elbow that the brat was gonna give to him.


"Are you suggesting the smell of flesh as we treat humans... makes us drool?" He glared at you all as he pulled his arm back. "Let me go, Mutt!!"


"Enough." The lady stood up. "Why are you being so violent? I did not tell you my name. My name is Tamayo. This boy is Yushiro. Please, try to get along."


You took one look at the Yushiro before giving up on that. "It isn't hard. I think it's considerably easier than for normal demons. I... I have altered my body and removed Kibutsuji's curse."


"What do you mean, 'altered your body'?" You asked her as Tamayo sat down.


"I no longer need to feed upon people in order to survive." She stated as you sat on the ground as well. "It is enough to drink just a little human blood."


You smelt the blood and already knew what they were going to say. "Let me guess, you buy blood to drink calling them blood transfusions, in exchange you give people money."


"Y-Yes... that is correct." Tamayo said as she was curious how you knew that. You simply laid down as Nezuko started to roll around you with a smile. You smiled and closed your eyes but still listened to them. "Of course, we never take so much that it harms them. Yushiro needs even less blood than I do. I made him a demon."


"YOU-!" You immediately drew Tessaiga as Yushiro went to get up but Tamayo put her hand out to him, and he sat back down. Tanjiro looked at you in shock.


"Y/N! Calm down!!" He shouted but you didn't budge.


"Y/n, I have no doubt you could kill me and Yushiro faster than any of us could use our blood art, so would you give me the chance to explain?" She said as you didn't move. She took that as a yes. "I did indeed so that, and they say that Kibutsuji is the only one who can increase the number of demons... and that is basically correct. In more than 200 years... Yushiro is the only one I was able to do that."


"IN OVER 200 YEARS?! HOW OLD ARE YOU, TAMAYO!?!" Tanjiro asked as Yushiro punched him in the throat, you let that one slide.


"DON'T ASK A WOMAN HER AGE, YOU LOUT!" Yushiro shouted as you smirked at him.


"So you're into the older chicks, huh, Yushiro?" You smirked and Nezuko looked at you with slight anger.


"SWT BWY!" Nezuko muffled something and your necklace suddenly glowed. Your body slammed into the ground.


"?!" You didn't move for a while, trying to figure out what happened.


"YUSHIRO! IF YOU PUNCH HIM AGAIN I WON'T FORGIVE YOU!!" Tamayo shouted as he stopped.


"NOBODY JUST SAW WHAT SHE DID?!" You shouted and sat up trying to figure out what Nezuko did to you as she looked down at you smugly. "YOU KNOW WHAT YOU DID! WHAT DID YOU DO TO ME?! YOU DIDN'T EVEN SAY ANYTHING!!"


"Y/n." Tamayo drew your attention away. "One thing I know you're worried about, I don't want you to misunderstand either. I'm not trying to increase the number of demons. I only treat people who have an incurable illness or injury... so they can live a little longer. And I always ask those patients... if they want to live longer I'd doing so means they'll become a demon."


"Just because you do it, and they agree, doesn't mean it's always gonna work. If it fails, you're just killing people faster." You said as Tamayo seemed to be upset a bit and sad. You shook your head. "I'm sorry, that was uncalled for. I have a question for you. Is there a way to turn demons back into humans...?"


"It does exist." Tamayo said as you went to her.


"PLEASE TELL US!" You saw Yushiro coming at you and picked him up by the throat.


"Yushiro..." Tamayo said as she looked at you. "I'm sorry for his behavior, Y/n. Can you please release him?"


"I don't know, he's bound to do it again. Maybe you should learn to keep your dog on a leash." You said as you used your claws to give him some fear. But then....


"SWT BWY!!!" Nezuko muffled again looking at you with anger as you were slammed into the ground again.


"WHAT THE HELL ARE YOU DOING TO ME?! YOU'RE NOT EVEN SAYING ANYTHING! IS THIS DAMN NECKLACE JUST SAYING 'CLOSE ENOUGH?!'" You shouted and tried to take off the necklace. Yushiro took his spot with anger.



"Anyway, every illness and injury has a medicine or treatment. However.. at the present, making a demon human again is impossible." Tamayo said as you looked at her again. "Nonetheless, we want to establish a treatment. To do so, we need to study lots of demon blood. I want to ask two things of you, Tanjiro, and one from you, Y/n."


She looked at you both. "One... I want to examine Nezuko's and Y/n's blood. Two... I want you to get a sample from a demon with high concentration of Kibutsuji's blood. Right now, Y/n and Nezuko are in extremely rare and special conditions. Nezuko slept for two years, so her body must have changed during that time. Usually, if a demon cannot ingest human flesh or animal meat for such along time... it will grow violent without fail. But surprisingly, Nezuko and Y/n do not have those symptoms."


"Y/n, from what I understand, didn't know he was a demon until 2 years ago. Kibutsuji put a curse that doesn't allow demons to mate with others. And even if that was the case, there's another curse that will kill... the child if born, and kill the human if mated with." Tamayo explained as you got fearful.


"D-Does that mean...?"


"No, in your case, it's something else." Tamayo reassured. "Not much known about him, but there was a dog demon standing against Muzan named Toga. Him and Muzan were the first two demons. Y/n, I believe you are from Toga's side of demons. Which means you wouldn't have any of the curses on you, and it means that your blood might be different then Muzan's demons. I think you and Nezuko are the key to figuring this all out."


You closed your eyes again and lied down to think, Nezuko rolled over to you and played with your hair again.


"The other task will be difficult. A demon with a high concentration of Kibutsuji's blood... means a demon close in strength to Kibutsuji. It won't be easy to steal blood from such a demon. But will you two still try?" Tamayo asked as you scoffed.


"You don't know me lady. I'm a sore loser, I'm not giving up until I kill Muzan and make sure Nezuko is better." You said as Nezuko cupped your face with a happy expression.


"Studying blood from many demons to make a medicine. If that's the only way, I'll do it." Tanjiro said looking at you and Nezuko.  "It will help... not just Nezuko, but lots of people, right?"


Tamayo smiled. "Yes."


You then felt your body pulse in and out. You scratched your nose in confusion. "Hmm...?"



"DAMN! GET DOWN!!" You shouted as Yushiro dived towards Tamayo as you tackled Nezuko and Tanjiro to reveal something destroying the house. After the object flew outside you got up and immediately pulled out the Tessaiga.


"HEY! MUTT!! GET OUT HERE!!" A woman shouted as you went to go outside when Nezuko grabbed your arm.


"NEZUKO, STAY HERE WITH TANJIRO!!" You shouted and ran outside. You held Tessaiga as Nezuko tried going after you only to have another Temari ball to stop her. One went after you as you gripped your sword. "I might be able to use this in a more normal way! Demon Breathing 4th form: BACKLASH WAVE!!!"


The Temari ball was engulfed in the swirling aura around you and The Tessaiga before you used your demon energy to reverse the attack onto the woman, keeping the deadliness of it while amping the power behind it. "Holy shit, that worked...? I'm gonna be honest, that one was a work in progress."


"Wow! You really are a mutt!" A woman said holding Temari next to a man with arrows and eyes on his hand. You glared and showed you fangs and gripped Tessaiga. "Now, now, little doggie! Let's see if you can play fetch!"

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