-Y/N POV-

Once I opened my eyes the first thing I saw was Fatalis's sleeping face. Then I realized that I was laying on her lap. I got up and saw that it was middle of the night. I looked next to me and noticed the girl from before sleeping with Chongyun in her hands.

Why does she remind me of Keqing? Anyway I put then all next to each other and cowered them with a blanket. I went to the chest and took the equipment and put it in my inventory. If I remember the DNA should be done by now. I looked into the DNA Stand and saw that all of the blood bottles were made into DNA bottles. If I remember I should be able to understand any Mizutsune and Zinogre after drinking this DNA. Well here goes nothing. Firstly I took the Mizutsune DNA and drank it. Upon finishing the bottle I felt a slight Sting in my head and tongue. Next up, Zinogre blood. The book said that with 3 doses I get a permanent feature of a monster and with 5 one of their abilities. Bottoms up!

Y/N: 'Oh God it tastes horrible. At least Mizutsune had a little fruit flavor'

Again after the first bottle I felt a slight Sting in my head and tongue. After the 3rd bottle nothing happened, but after I drank the fourth one I felt slight pain all over my body. When the pain ended I felt something soft on the back of my hands, legs and my back. When I looked down I saw that I had silver fur on my back that went onto the back of my arms and a bit was at the end of my legs. Then I drank the 5th bottle and I felt very and very energized. I looked at my hands and saw that the fur had little lightning bouncing on it until it dissappeared. I quickly opened the Mod Book and found the page about Zinogres. After a bit of reading I found what I was looking for.

[Zinogre fur said to be able to store electricity in it and channel it through their body. They are also able to enter the "charged" state when they have enough electricity stored. In this state their speed will increase and they will gain high resistance against electric type attacks. It's also very fluffy and it attracts electrobugs who help charge the fur]

Y/N: 'Okay if the 5th bottle gave me the ability to control lightning I'll need to train with that and find some of these electrobugs'

I went outside and sat on the stairs while looking at the nightsky. I then started to flip through the Mod Book to see if I can find anything about that little girl. And would you look at that, so that girl IS Keqing. But how is she human? Then I found my answer.

[Companions can "grow" every time they level up when given specific items]

Y/N: Ok, then I'm guessing the "special item" for Keqing must be books. *flips page*

[To level up Keqing you need to give her a special type of books to read as any books won't work. The special type of books can be obtained by either trading with a librarian or by breaking a bookshelf. When breaking bookshelf with Keqing near it it will 100% drop 1-2 special books]

Y/N: So that's why when I broke those I only got those individual books. Well it says that she's level 5 now. And her ability now stuns the enemy for 3 seconds, nice. *puts the book away*

I continued to look at the stars but I noticed a slight blue glow coming from the birch forest so I decided to investigate what it was. I equipped the shurikens and held Ivory ready to shoot anyone dangerous. It's interesting that when my right arm turned metal the fur dissappeared. I made my way into the birch forest and upon reaching a little opening I found a lot of bugs who were glowing light blue and emitting electricity? So these are electrobugs. I put Ivory away and stretched out my non metal arm. Some of the bugs landed on my palm and some went into my fur. I saw it emit electricity.

Y/N: Are you charging me up little guys?

For a second I felt a little zap.

Y/N: I take that as a yes. Well, thank you.

After a few more minutes they stopped and left the fur. And I felt a lot lighter. I unequipped the shurikens and my arm turned back to normal. I sat down in a meditating position and started to concentrate and try to channel the electricity through my body.

-3D POV-

While Y/N was trying to control the electricity a lot of bug started to fly around him. While he was at it 2 creatures were seen watching him from the shadows. Those being a demon and a crow. The demon rushed at Y/N and tried to slash him but Y/N blocked it with his mechanical arm and the demon jumped back. The bugs flew into the trees and hid.

Y/N: You are a bold one. Come on! Show me what you got.

The demon rushed at him but Y/N easily dodged and kicked him into the air. While the demon was in the air Y/N threw some explosive shurikens at it, which he got access to when Genji explained how his metal arm works, and the shurikens exploded when Y/N did:

As now limbless body of a demon was falling to the ground, Y/N took out the Mizutsune Longsword and tried to channel lightning through it and it worked. When the demon was close he sliced its head off and it disintegrated into nothing. He then saw a message in the corner of his eye.

[Congratulations! You have joined Demon Slayer Corps. Would you like to infuse your current sword with ability to use breathing technique or get a new one?]

Y/N: Infuse current.

He then saw the sword glow slightly and then it's stats appeared.

===============================

Mizutsune Longsword

Reinforce Level: 3

Deals water element DPS: 25

DPS: 35

Can be used in performing "Serpent Breathing"

===============================

Y/N: So serpent breathing huh.

Y/N then opened the Mod Book and after reading the recently added mod Demon Slayer he understood and learned the forms of serpent breathing.

Y/N: *puts the book away* Okay, now to practice this breathing.

Before he could he felt something on his left arm and when he looked at it he saw a cool looking white snake around it looking at him.

Y/N: Well hello little guy. But I don't think that you're that little. I'll call you...... Basilisk. Or Basil for short.

The snake hissed and then coiled itself gently around his neck.

Y/N: I guess you're the part of what I got after getting serpent breathing. Now, training.

While Y/N started to training in using his breathing the crow that was watching him flew off the tree and into the east. After a few minutes it reached a big Japanese looking Estate and flew down and sat next to a man, who was sitting and looking at the stars, and two young girls. (Imagine it's night)

Crow: A new slayer located. In the birch forest opening near the estate.

Kagaya: Thank you. Tomorrow a meeting will be held. I ask you girls to inform the slayers.

Both: Yes father.

~timeskip till next day morning~

-3D POV-

Kagaya: I have called you today to inform a happy news.

Sanemi: And what that be master?

Kagaya: Yesterday night, my crow have found a new slayer training in the birch forest near the estate.

The hashira and their apprentices were shocked. Another slayer?

Shinobu: May i ask. What breathing does he use?

Kagaya: My crow said that he had a white snake around his neck so it is possible that he uses serpent breathing.

Iguro: 'snake buddies'

Before anyone could reply something, or rather someone, crashed near them creating a huge dust cloud. And then something big jumped into the cloud but it seemingly got flung back over the wall with its right horn missing and when they looked to see what it was they were shocked to see a Zinogre.

Sanemi: That creature again!

Shinobu: I thought you said that you got rid of it!

Sanemi: I said that it retreated!

They then heard a cough and looked toward the source and saw Y/N who coughed up a little bit of blood but wiped it away.

~flashback~

As Y/N was training in the forest he got jumped by another Zinogre.

Y/N: Another one? What the hell?

Zinogre: Get out of this territory. It's mine!

Y/N: Hell no, my house is near here and I don't need you attacking me. Now come at me you overgrown dog.

Zinogre: You'll pay for calling me that.

And with that the fight started.

~flashback end~

-Y/N POV-

God, who knew that fighting this thing would be that hard. But at least I tested out the breathing technique. Now time to get serious. I put away the Mizutsune sword and equipped Genji's full equipment.

Y/N: Basil you ready? *no reply* Basil?

I looked at him and noticed that he was looking at a snake who was around the neck of a woman with heterochromia eyes. And I'm not gonna lie, she looks fine. (Yes my dear readers. It's genderbend Iguro Obanai. I need a fem version of his name for her cos I can't think of anything. Please help. If no one can think of anything her name will stay the same)

I then equipped my mask and as soon as I did that Zinogre jumped inform of me a few meters away. And it's right horn was missing.

Zinogre: You'll pay for my horn.

Y/N: Then come at me!

-3D POV for the fight-

Both of them rushed at each other and it tried to slash at Y/N but he jumped up and took out Ebony and Ivory and shot it in the back and tail. While the fight was going the hashira got Kagaya to safety while the rest stayed ready to protect him and help Y/N if needed. While in the air Y/N threw a few shurikens at its tail and exploded them damaging its tail. When Y/N started to fall down Zinogre tried to bite him but Y/N was fast enough and performed a Swift Strike while successfully cutting off his second horn as it roared in pain. But Y/N didn't get time to react as he got smacked by the tail and flew towards the hashiras with Gyomei catching him. Y/N looked at him and got an idea.

Y/N: You look strong. Can you throw above that little bitch please.

Gyomei: Are you sure? We can help.

Y/N: Nah. I got this. Now throw me.

Gyomei didn't complain and threw Y/N above the Zinogre as the others looked at him with "WTF?" face. When Y/N was right above him he took out the Longsword.

Y/N: Serpent Breathing: Fifth form: Slithering Serpent.

He dashed forward and a giant snake head appeared, it bit Zinogre's tail while Y/N, with a powerful singular slash, decapitated it. Zinogre roared in pain. Meanwhile Y/N used Swift Strike and dashed in front of it and gripped the handle of the dragonblade while putting away the longsword.

Zinogre: Y-you bastard. You'll pay for this!

It rushed at him and tried to bite him but Y/N had other plans.

Y/N: Oni no ken o kurae!

As Y/N took out the dragonblade blade and twirled it a red mechanical dragon appeared. (basically robot genji in chapter seven but he's red and like the dragon from Genji's ultimate) Y/N did an upward slash, when Zinogre was close, and cut his mouth in two while the dragon bit it's neck and ripped its head off as the blood sprayed on Y/N while Zinogre's now dead body fell to the ground. With that Y/N sheathed dragonblade and unequipped the mask.

-Y/N POV-

Well that was something. A screen then appeared in front of me.

[The player can gather 20 Zinogre blood and carve the resources from it. Do you wish to do it?]

====PAUSE====

A/N: Yes you are seeing this right folks. The Mighty Roulette has decided that you get enough blood to TRANSFORM INTO A ZINOGRE! In all honesty it is not rigged. I have proof.

Like God damn. The roulette is feeling generous. And I didn't plan on giving you the ability to transform so soon. Well shit. Anyway back to the story we go. Oh and before anyone asks. NO THAT'S NOT RUSSIAN!!!! It's Ukrainian! Know the difference. And yes, I'm from Ukraine 🇺🇦.  Anyway back to the book.

====CONTINUE====

I pressed yes. Thank God I went back to the house at night and took an iron axe with me and 32 empty bottles, never know when you'll need them these days. The courpse, tail and head dissapeared in blue particles and 20 Zinogre blood appeared in my inventory as well as a lot of resources. As well as the message in chat.

{Y/N has carved and obtained the loot from the dead Zinogre}

Y/N: Nice.

???: Ummm, excuse me. Are you okay?

I turned around and saw a boy and a girl approach me, the boy also had a wooden box on his back.

(Imagine with the box)

Y/N: Yup I'm good. Tho tired a bit. The fight took a lot out of me. The name's Y/N Ironhide by the way.

Tanjiro: My name is Tanjiro Kamado. And this is my girlfriend Kanao Tsuyuri.

Kanao: Nice to meet you.

Y/N: Awww. You look so cute together.

They blushed and looked away. I then noticed more people approach us. And I could see Basil trying to look like a gentleman for the female snake. But he looked more badass with the blood from Zinogre on him. Ah, young love. (But with some genderbends, you'll see)

???: Well that was quite the display of power.

(Yes I'm making the poor man see. He still has the curse but I ain't letting him die. We'll heal him)

Kagaya: I'm Kagaya Ubuyashiki and welcome to my estate. Behind me are hashiras, a top rank demon slayers.

Y/N: Nice to meet you everyone.

Kagaya: At the moment these are not all the slayers we have. But I want to ask you where did you learn to use Serpent Breathing?

Y/N: 'Aight, time to activate two of my secret techniques. Bullshitery 100 and speech 100' Well that's a funny thing. While traveling home from an expedition I stumbled upon an abandoned house which had a scroll with details to how to learn Serpent Breathing. So I decided to take it with me and learn it.

Iguro: And for how long did you know it? The name's Iguro Obanai, Serpent Hashira.

Y/N: Again. The name's Y/N Ironhide. And I knew this breathing for like. 10 hours?

Everyone: WHAT?!

Iguro: But you performed it like you knew it for a few years!

Y/N: What can I say. Being an ex-soldier has its perks. Anyway do you have a place I can take a bath and cleen clothes. Cos I reek of blood.

Gyomei: My name's Himejima Gyomei. I will show you to our bath house while we give your clothes to the kakushi so they can clean it.

Y/N: Lead the way then big guy. (Forgot to mention. Same will all of my Y/Ns you are 6'2 but you'll get taller. And Uzui's build. But with a 10 pack of course)

~a small timeskip~

-in the bathhouse--3D POV-

Y/N: Oh God this is relaxing. Oh how I missed this. I'm so jealous of you guys. Thanks for letting me in.

Gyomei: It's nothing. But may I ask. Why is your arm made out of metal?

Y/N: Oh fuck. Uhh, how do I explain this? Ok so basically it's the perk of my clothes. I have an ability to store different things in a "space pocket" and that clothes has an ability that when I store and equip it on me my arm turns metal. But when I take it off normally the arm stays.

Rengoku: That's really impressive. (Author in the background: UNCLE RENGOKU!!!)

Y/N: Thank you.

Sanemi: Now answer my question. What were those little things that you threw at that thing?!

Y/N: Oh these? *one shuriken pops out* These are called shuriken. They can do many things like explode, electrocute or stun the enemy. Useful things honestly.

Tanjiro: And how many of these do you have?

Y/N: Infinite.

Boys(-Y/N): Infinite?!

Y/N: Yup, I don't know how but my arm just seems to have infinite amount of them. But I'm not complaining. Also when are you going to drop the facade of strong and mighty Sanemi? Just stop. Everyone in here are your people. You can trust us.

Sanemi: *sigh* So you saw through it huh.

Y/N: Yes. Now let's share something personal.

Gyomei: And that is?

Y/N: Our backstories!

-meanwhile on the girls side-(God I hope some pics won't get flagged. Wattpad please don't)

-3D POV-

Mitsuri: Hey Iguro where's your snake?

Iguro: Over there. *points to the corner of the room* She's talking to Y/N's snake.

Uzui: His snake looks so flamboyant!

Kanae: Indeed.

Muichiro: I want to see clouds.

Uzui: Anyway. Have you seen his sword that he used to kill that thing? The one with the dragon. I want him to teach me how to do it.

Shinobu: I'm interested as well. It may be a new technique even.

Giyuu: Girls, there's a weird crow at the window.

They looked up to the small window and saw a really interesting crow sitting there. It then flew down to Kanae and everyone took a good look at it. And when they saw its details they were shocked. (2 times bigger then a normal crow)

Girls: 4 wings!?

Crow: CAW!

It looked at one of the butterfly ribbons Kanae had near her and it then snatched one and flew out through the same window it came in through.

Kanae: There goes one of my favorite ribbons. Let's finish and get out the bath girls.

------------------------------------------------

A/N: And that's all people. Hope you enjoyed this extra long chapter. 3173 words. Jesus chris. It took me so long to write and fix the mistakes. So I hope that it was worth it. And again. You can thank the almighty roulette for making Y/N OP. Have a good day/night.