A/N: FINALLY I WILL BE FREE FROM ALL THE QUESTION "Demon slayer book when" UWOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOH!

Anyway, story between funny and serious, and NO Y/N WILL NOT BE WITH THE TANJIRO GROUP HAHAHAHA!

Have something good for Y/N

LET'S GOOOOOOOOOOOOO!

Narrator POV

In the Taisho Era, was happening a great war, between humans and Demons. The demons were immune to most common pain, hunger, and could only be killed by either the sun, or getting their head cut. Meanwhile the Humans had the Slayers with them

The slayers were people trained to fight demon, using a sword skill, called breathing

It will be explained later on, do not worry

Right now, during the night, in a small villa-

???: CAN YOU STOP TRYING TO CUT ME YOU BITCH?!

Someone was about to get killed?

???2: It would happen faster if you stop moving!

???: LIKE HELL THE GREAT Y/N L/N WILL BE KILLED BY A SLUT LIKE YOU!

Well, it seems like we're already in the action

Y/N L/N, was currently in the middle of a dodging session, as a woman with red eyes, and a pupils that says '10th' was trying to kill him

I do not need to say that she failed miserably as Y/N didn't get hit once

???: HOW CAN A NORMAL HUMAN CAN MOVE LIKE THAT?! YOU'RE NOT A SLAYER!

Y/N: GOT YOU!

He was in front of her, as he had the bright idea to bitch slap her, and run away instantly after doing that

???: YOU BASTARD!  I AM MUKAGO, THE 4TH LOWER MOON! I WILL KILL YOU!

Y/N: More like Mukahoe!

She screamed, before rushing after Y/N, who keep running

He had to deal with demon before in his life, but they never managed to kill him

Either they got too furious at his antics that they just kill themselves, either they give up

Yes, he can make demon kill themselves, that's how he works

Mukago: STOP RUNNING ALREADY!

Y/N: ALRIGHT I GIVE UP!

Mukago: H-Huh? That was easier than I thought. Good!

She walked to him, smirking, before he smirked back, and took something off his pocket

Y/N: POCKET SAND!

He blinded her for a few second, as when she got her vision back, he was gone

Mukago: That brat.......... I'm going to kill him the worst horrible way possible........

He was just standing on a tree, before he realized she was gone for good, and jumped off the tree

Y/N: That's a good thing. I don't know how to kill those things, seriously they're such a pain..........

He started to walk away, before he did........ THE thing

https://youtu.be/cTiC_ZFVxGU

He looked up, and see she was back, more anrgy than ever

Y/N: Can you please stop insisting on me? It's like you're my ex........ What is an ex anyway?

Mukago: I'm going to make you suffer, and will make sure you die slowly, and painfully!

Y/N: You made a mistake

Mukago: Oh yeah?

Y/N: Yeah, it's 'I will try to make you suffer'

Mukago: YOU SMUG BASTARD! I will kill you, like every humans in my way!

He stopped moving, before she got in front of him, and went to stab him in the throat with her hand

Suddendly, her vision changed, as she saw behind her

Mukago: Eh?

Y/N had punched her in the chin, sending her head backward

She regained her spirit, as she looked at him, but see he was slightly different

A sort of small mark was on his right arm, before he visions went dark

He just destroyed the upper half of her head, with a punch

He took some step back, before doing small jump, and looked at her

Y/N: Before I go again, I'm going to kick your ass as a goodbye gift

Mukago: Like a brat like you can kill a demon like me!

Her head healed, as Y/N kicked a tree, grabbing a branch, and popped his neck

Mukago: A branch? Seriously?

Y/N: Void breathing, first form...........

Mukago: A breathing te-

Y/N was already behind her, his eyes closed

Y/N: Space

He opened his eyes, before Mukago's body falled to it's knee, and started to disappear

Mukago: In a........... instant?

Y/N: Heh, easy

He tossed the branch, as the body of Mukago started disappeard entirely

Y/N: Dick move talking badly about dead people

??: You, what was that just now?

Y/N: Whomst in the fuck talked to me?

???: I asked you a question

Y/N: I created that. I use it only when really needed. And most importantly, I can use it with whatever I want! HEHE!

???: How many have you killed with it?

Y/N: I would say....... 10? or more, I don't really count

???: Do you know that you just killed a really strong demon, meaning that you will never be at peace again

Y/N: ..........Fuck

???: We currently miss some people to fight against the demon. That's why..........

The person landed in front of Y/N, and pointed at him

???: You're going to become a Slayer

Y/N blinked a few times, before looking down, and realize

The person was....... small

Y/N: .......... Can you reach a chair?

???: ............

Y/N: My bad. Is that a real snake?

???: I already regret recruiting you

Y/N: Oh my god, are we best buddies now?!

The person disappeard, and started to go back to his destination

Before a voice asked him something

Y/N: You didn't answered my question. Are we best buddies?

???: He can follow me at this speed? I need his name

Y/N: Since we're buddies, I'm going to tell you my name! Y/N L/N! Nice to meet you!

???: Follow me

He sped up, as Y/N followed after him, managing to keep up with him

Timeskip

Y/N was in small garden, waiting on a bench, in the middle of the day

Y/N: The flower sure look like........ flowey, here........ I'm bored

???: Oyakata-sama arrived

He heard 2 voices saying this at the same time, before he looked their way, and see a man, with 2 girls, walking toward him

Oyakata: I am sorry for making you wait, Y/N

Y/N: Uhhh..... No problem, I wasn't bored at all

Oyakata: This isn't what you said earlier

Y/N: Oh no, you saw through my acting!

Oyakata: Well, you are like Obanai described you, lively

Y/N: I am, indeed. So, who are you? Didn't catched your name or identity

Oyakata: I am the head of the Demon Slayer corps, Kagaya Ubuyashiki

Y/N: Nice to meet ya. You already know me, Y/N L/N, the best of the best, and the most handsome man in the world

Oyakata: Obanai told me you mastered a breathing technique, but it was made by you only, isn't it?

Y/N: Uh, yes. It's the Breathing of the Void. It's like wind, but more powerful and focused on one part only? I don't know how to describe it

Oyakata: Oh? How many forms does it have?

Y/N: Hehe! It currently have 13th safe form, and the last one is only for emergency. The last one can kill anybody, no matter who they are after all, but counter part is, I die

Oyakata: It is one dangerous form you have here

Y/N: Meh, if it can make other people live another day, and see the future, I will use it without hesitation

Oyakata: You really have a great heart, Y/N. It makes me happy to know that there are people like you among us

Y/N: Sus

Oyakata: That's why I wanted to give you an offer

Y/N: Go ahead

Oyakata: Will you join the rank of the Slayers, but as the 10th

Y/N: 10th what?

Oyakata: The 10th Pillar. The pillar of the void

Y/N: FUCK YEAH THAT'S COOL! I'M IN!

Y/N extended his hand, as Oyakata only smiled

Oyakata: If you are extending your hand to me, I should warn you that I'm partially blind, and I cannot see it

Y/N: Then it's not partially it's fully you dummy

Oyakata: Well, even the head of the Slayer corps can make some mistake, isn't it?

Y/N: Yup, no problem here

He grabbed his hand, and shook it, as Y/N smiled

Y/N: You can count on me, Kagaya!

Oyakata: I will let the other pillars explain to you about everything. Sanemi will take care of it

Y/N: I'm sure we will be great friends!

Timeskip

Y/N: I DON'T WANT TO BE YOUR FRIEND!

Sanemi: LIKE HELL I'LL TEACH YOU ANYTHING!

Y/N was once again using the ancient art of dodging against Sanemi, and it was a little more difficult, mostly because he wasn't ready

Sanemi: Why should I teach a newbie everything I know, huh?!

Y/N: I DON'T WANT YOU TO TEACH ME EVERYTHING BUT THE BASIS YOU HOE!

Sanemi: WHAT DID YOU JUST SAID TO ME?!

Y/N: YAAAAAAAAAAAAAAAAAAH! HE'S GOING TO KILL ME!

Sanemi: You're just at the rank Mizunoto, why should a pillar teach you a basis?!

Y/N: That's not what Oyakata-sama said! He said I'm a pillar, HMPH!

He puffed his cheeks, crossing his arms, as Sanemi stopped in his way

Sanemi: You? A pillar? When did you joined?

Y/N: Today, why?

Sanemi: And you said Oyakata-sama already gived you the rank of Pillar?

Y/N: Yup!

Sanemi: What is this RIDICULOUS JOKE?!

Y/N: Eh?

Sanemi: If you're really a pillar, prove it to me!

He tossed a wooden sword at Y/N, who catched it

Sanemi: You need to hit your oppenent 3 times. If you manage to beat me, I will accept you

Y/N: U-Uh....... Can we do a Uno instead?

Sanemi: Get ready to fight!

Y/N: Y-YES!

They got in position, before Y/N eyes sharpened, and he took his stance

Y/N: We use out breathing techniques, or we go only with skill?

Sanemi: You need to prove your strengh, so you need to use your breathing techniques

Y/N: Alright then....... Ready or not, here I come!

They charged at each other, clashing, as both of them were smiling

Sanemi: Second Form: Claws, Purifying Wind!

He lift his sword upwards toward the right, and unleashed four vertical slashes at once

Y/N: Fourth form: Reflection!

He reflected Sanemi's own attack against him, and hit him one time in the shoulder, as Sanemi did the same

They jumped back, before Y/N put some strengh in his legs, and took another stance

His sword was at his side, standing vertically, as both of his hands grabbed the handle

Y/N: Eleventh Form: Aurora Borealis

He disappeard from Sanemi's sight, before trying to slash at him from behind, but Sanemi dodged, before hitting Y/N's head

But it was an after image, as the real Y/N was behind, and thrust with his sword, making Sanemi slide back

Sanemi: Hoho! You got some guts, I see!

Y/N: Yup, and you know what? 

He dropped the sword, and wiped his hand

Y/N: I give up. I already proved myself enough

Sanemi didn't said anything, before he dropped the sword, and walked past Y/N

Y/N: So......... Can you explain to me?

Sanemi: LIKE HELL I DO IT!

He walked away, as Y/N blinked a few times, and decided to not care about it

Well, Y/N is going to be one weird Slayer, right?

End(Demon Slayer X Male Reader)

Chapter 1: Finished

A/N: IT'S HERE FINALLY! Please stop asking me when it will be released now please ;-;

Oh, and by the way, it's the first time I do that, but NO LOVE INTEREST >:D

Yes, cry harder

In the next chapter, Y/N is accepted as a pillar, and he have a mission! What? A demon with a sword?

'Chapter 2: Proof of strengh'