*BLAM!*

"... Hmph? Is that it? THAT'S ALL THE MIGHT YOU CAN MUSTER!?"

*BBLLAAMM!*

*THUD!*

"T-Tc-chhh…”

An old Japanese style Garden Courtyard... a place where you'd see samurai train or have duels in movies... the flowers around the yard were never all that spectacular... but that's mostly because the owner of this place never really cared to plant anything pretty... this place... the Torakami mansion... it's the place I and some others came to train... training... oh yeah... that's what I'm doing now... training...

Opening my eyes once again, the sun's rays beamed down into my face, my breath hitched... it was very shaky... I could feel my heart beating in my head, as my vision blurred out the clouds above, the heat of pain burned, adding to the already searing heat from the Summer Sun. Rolling over, I placed my hands on the ground to try and get back onto my feet, but as I tried to push my lead heavy body off the ground, I could see and feel my arms shaking like crazy... threatening to give out and make me fall if I kept on pushing... slamming my forehead into the ground, I used it to keep me steady as I slowly and shakingly got back onto my feet. Panting from the simple action of standing, I turned around and quickly faced my mentor, as he glared down at me. I could feel blood dripping from my forehead, but I ignored it as I got into a battle ready stance, struggling just to stand as I struggled just to look at the man infront of me as my vision blurred and swirled, I could feel myself wobbling from side to side... At this point, a simple breeze would knock me onto my ass. My mentor's glare turned into a smile as he laughed a bit.

"Ha! 65 Seconds, even in such a broken state you still get right but up onto your feet! That's what I like about you Y/n, you're just like me..."

*STOMP*

*FWOO-*

"WE JUST DON'T KNOW WHEN TO QUIT!"

*BBBLLLAAAMMM!!!*

*Thud*

My mentor then rushed over and slammed me in the jaw once again, quickly sending me to the ground, in too much pain to let out a sound of pain as I hit the floor. Before I could struggle to get back onto my feet, my mentor grabbed me by the collar and moved me over towards the wall surrounding the yard we were in, sitting me down against it haphazardly. I then looked up at the man, seeing the face of the man who had taken me in and trained me to be the killer that I am...

His name... Kenka Sengoku... a man who's mastered every single martial art and fighting style in the world... he's battle against every single one of the world's greatest fighters, all in their prime, knocking them out before he even got serious... he's kept his combative prowess a secret all these years... because he's the same as me... a monster that kills other monsters... we're both Demons...

"Alright Y/n, time for the news I was talking about earlier."

"N-Ne-News?"

"Yup, the council decided to give me another student. So for a bit I'm gonna be focused on training him. But that's not all, once you recover from today's training, it looks like the two of you will be working together on some missions."

"W-Working to-together?"

"Well, more like you'll be showing him the ropes. The kid's strong enough for the council to pass him from another teacher to me, but he's still not as good as you are."

《Flash》

"M-My name is Hakaru Kumari! It's very nice to meet you K-Kohiro-Senpai!"

It had been a few days since my training with Mentor... after I had recovered I came face to face with Mentor's new student… my junior. The man bowed to me as he introduced himself, before he stood up straight, revealing his form.

"You don't need to bow... I don't really deserve that much respect..."

Hearing this confused Hakaru, as his face easily showed said confusion.

"What? But you're my senior..."

"... That doesn't matter... in the end the two of us are monsters… we're both Demons... we're going to be working together for a bit... I'll be showing you the ropes, but even during that, remember that we are equals in status..."

Hakaru had a stunned look on his face as I began walking off, leaving the man to his thoughts...

《Flash》

Several bodies laid dead on the ground, blood seeping and staining the walls and floors. Break into a large Yakuza's hideout, gather some documents and kill everyone listed... It was the first mission Hakaru and I were given... he used a Chinese sword... and seemed to hold a face of sorrow as he killed people. After all the monsters on the list had been found, identified, and killed, and the documents we had been sent to collect had been found, I found Hakaru in a room with the most Monster Corpses, on his knees with his eyes closed, head bowed and hands clasped, quietly muttering something in Chinese.

"... What are you doing?..."

"Praying... so that the lives we took... their souls may find peace after facing the gods..."

"... That will never happen..."

Hakaru gained a look of surprise at this as I hung my katana at my side.

"... We are monsters just as they are... the only reason we live this life of endless damnation and death... is because the Gods have condemned us... under their guidance our souls will never find any semblance of peace... I won't stop you, nor will I call your prayers worthless... Infact... when I die, I ask that you pray for my soul as well, as I will yours, so that we may have a single bit of hope in our hopeless afterlife..."

Hakaru was, once again, surprised by my words, before he continued his prayers.

Hakaru Kumari… a hypocrite who's sense of justice is stronger than his wit… it would be his downfall…

.
..
…
….
…..
……
…….
……..
………
……….
………
……..
…….
……
…..
….
…
..
.

"A Calm Song… 
Flutes Play all at different times and tones… yet in harmony with eachother… 
Every now and then, a skittering song of an animal breaks the momentary silence… 
The subtle song of Yokai is barely heard but obviously there to those who can hear it… 
A sun's song plays, as the world listens to that song and responds with its own joy…"

*YYYAAAWWWNNN!!!*

On the side of the road, an umbrella holding the Kabuki Symbol rested on his shoulder and hiding the brightness of the sun from his eyes, a familiar man yawned as he slowly rose to his feet and looked around, stretching his limbs as he groaned. The man then moved the umbrella a bit as he looked down the long road infront of him, and then at the sun once again.

Y/n: "Man. I haven't slept that well in a while… feels like I slept for a whole year!"

Y/n said happily with a small smile appearing on his face.

Y/n: "Dream was super weird though… something about a Festival…"

The Oni Of Dumbs said as he finished stretching before patting the dirt off his clothes and turning towards the open road once again.

Y/n: "Welp. Better get back to it… My Wish Won't Make Itself."

The Oni said before he began walking down the road happily, his umbrella resting on his shoulder as he walked happily.

Y/n: 
"🎵Every Sunrising Is So Good~🎶

🎶There Where We Get Good Morning~🎵

🎵Oh.🎶
🎶Oh.🎵
🎵Oh.🎶
🎶Oh.🎵

🎵Oh-Oh.🎶
🎶Oh-Oh~🎵

🎵Ohayo Gozaimasu~🎶"

《[蝶の死橇犬目]》
《[義務的研修了一夕]》
《[Dead Eyes Of The Butterfly]》
《[Obligatory Training Arc]》

"NOOOO!"

Still Tiny Zenitsu: 
"I CAN'T POSSIBLY TAKE ANYMORE OF THIS!!!"

Back at the butterfly manor's infirmary, Zenitsu was seen doing what he does best… screaming in a mass of fear as the Manor's attendants tried to care for him.

Aoi: "We go through this every day. Saying you're in bad shape is an understatement. Take your medicine this second!"

Aoi yelled, causing Zenitsu to cry even more as he stared at the medicine in his tea cup, all the while, Aoi went over to Tanjiro as he was handed his own medicine.

Aoi: "Good Grief. Tanjiro, this medicine is for you."

Kiyo: "Here you go!"

Tanjiro: "Thank you very much."

Tanjiro said before he quickly drank his medicine, like a good boy.

Tiny Zenitsu: "HEY!"

Zenitsu suddenly yelled across the room grabbing everyone's attention.

Tiny Zenitsu: "I SAW THAT MEDICINE GO DOWN MUCH EASIER! SO THEN, IT'S DIFFERENT FROM MINE!? FAVORITISM! I CALL FAVORITISM HERE!!!"

Tanjiro: "Zenitsu quiet down! This is a hospital ward!"

The tiny boy yelled, his voice resembling that of a baby's for a moment, as Inosuke simply laid between the two, but then!

"You all seem lively."

A familiar voice said, as a forgettable face appeared.

Tanjiro: "Murada!"

Tanjiro said in excitement as the slayer appeared.

Tanjiro: "How have you been doing?"

Murada: "I came this close to being melted down, but I survived somehow. I hear you guys got banged up pretty good though. Oh, what about that older guy that helped us? He isn't here is he?"

Murada asked, causing Tanjiro to shake his head.

Tanjiro: "No, Hibiki-san wasn't as injured so he stayed behind. He's probably making his way here as we speak though."

Murada: "I expected that. He did seem on another level compared to us…"

Murada said before turning towards Inosuke, who still just layed there.

Murada: "What was it that happened to you, Boar Kid?... Hm? Is he sleeping or something?"

The forgettable slayer asked in confusion as Inosuke wasn't moving at all.

Tanjiro: "He went through alot. You should just let him be."

Murada: "But for him of all people to be quiet-"

"Tanjiro."

The voice of a baby spoke out, revealing the still tiny Zenitsu.

Tiny Zenitsu: "Who… is this?"

Tanjiro: "He fought with us on Mount Natagumo. He's a friend."

Murada: "I'm Murada! Nice to meet ya! What happened to your arms?"

Tiny Zenitsu: "My limbs were shrunken down, because I was almost turned into a spider…"

Aoi: "And that's why you need to take this medicine!"

Tiny Zenitsu: "AWHAHAHAA! BUT IT TASTES SO GROSS! THERE'S ONLY SO MUCH GROSS A PERSON CAN TAKE!"

Aoi: "Don't come crying to me if your arms don't grow back to normal!"

Tiny Zenitsu: "SO CRUEL! THAT'S SUCH A CRUEL THING TO SAY!"

Aoi: "You don't know how good you have it! You realize that if you take this medicine and get lots of sunlight there'll be no lasting effects, don't you!?"

Tiny Zenitsu: "I! CAN'T! DO! IT!"

Zenitsu yelled jumping out of his bed, jumping on and off Inosuke's before landing on Tanjiro's hiding behind the Hard Headed boy.

Tiny Zenitsu: "NONE OF THAT CHANGES THE FACT THAT THAT STUFF TASTES AWFUL!"

Zenitsu complained loudly, causing Aoi to groan just as loudly, Murada then went to say something, but-

*Fwoo-Clack!*

"Oh, of course it was the last one I tried."

Suddenly, the door to the room was flung open, causing everyone to turn only to reveal a familiar blank face standing in the doorway.

Tanjiro & Zenitsu: "Hibiki-San!"

Y/n: "Yo."

The man said without a care as he walked onto the scene.

Y/n: "So, how broken are you idiots this time?"

Tanjiro: "... V-Very…"

Tanjiro said, causing Y/n to give him an annoyed look. Y/n then looked around the room a bit only to notice Murada sitting there. The Oni was confused for a moment before he smiled.

Y/n: "Oh hey, it's you."

Y/n said, causing Murada to smile aswell.

Murada: "Ah, you remember me?"

Y/n: "Yeah, you're that guy who pissed himself."

Murada: "THAT DIDN'T HAPPEN!"

Y/n: "I'm surprised you made it off the mountain. Nice Goin Piss boy!"

Y/n said happily slapping Murada on the back, much to his confusion.

Murada: "I-I… I don't know how to take that…"

Murada said growing a somewhat depressed aura around himself before Y/n turned towards Zenitsu.

Y/n: "Why are you tiny?"

Tiny Zenitsu: "This Oni guy named Zanki tried to turn me into a spider… But I beat him and got this!"

Zenitsu said proudly as he pulled out Zanki's Ongekishingen Restuzan, causing Y/n's eyes to widen.

Y/n: "Woah, seriously? I knew you had potential, but that's insane."

Y/n said, causing Zenitsu to smile proudly.

Y/n: "But why are you still so small? Don't they have a way to fix that or something?"

Aoi: "We do."

Aoi said, grabbing Y/n's attention, as she showed off the Medicine in the Teacup.

Aoi: "It's this Medicine, but he refuses to drink it."

Tiny Zenitsu: "THERE'S NO WAY I'M PUTTING THAT DISGUSTING STUFF IN MY BODY!"

Y/n: "The worse a medicine tastes the better it works."

Tiny Zenitsu: "THERE'S STILL NO WAY I'M DRINKING THAT!"

Y/n: "......."

Y/n stared at Zenitsu for a second before he walked over, grabbed the medicine out of Aoi's hand and walked over to Zenitsu, a menacing aura surrounding him.

Tiny Zenitsu: "W-Wait! H-Ho-Hold on! H-Hibiki-san DON'T-"

*Command Grab!*

Tiny Zenitsu: "GAGAHAHAGAGAHGAHAH-"

Y/n wasted no time, quickly grabbing Zenitsu by the collar of his hospital gown and forcing him to drink the medicine, much to Murada and Aoi's terror as they watched the scene. Once he was done, he threw the coughing Zenitsu back onto his bed.

Tiny Dying Zenitsu: "*Cough Cough* I Almost Drowned…"

Y/n: "That means the medicine's working."

Aoi: "N-No it doesn-"

Y/n: "It does now."

Y/n said with a small smile on his face while Tanjiro chuckled a bit, much to everyone's confusion. After that, Y/n then turned towards Murada.

Y/n: "So, what's up with you Piss Boy."

Murada: "Please don't call me that."

Y/n: "Piss Baby?"

Murada grew a depressed aura at this, only for it to get worse when he was reminded of what he had gone through earlier.

Depressed Murada: "I was summoned to the Hashira meeting to give my report on everything that related to the Mount Natagumo Incident… It felt like hell… those Hashira are absolutely terrifying! They were all really furious about how the quality of the new demon slayers had gone downhill, because there were a number of us who neglected to follow orders up there… they were asking me things like, "Who Trained Them Anyway?" What good was it asking a No Rank like me into a meeting like that… The Hashira really terrify me…"

Y/n: "... PFFF- You're scared of those Good Breathing Losers? HA!"

Y/n suddenly began, surprising everyone in the room, while Tanjiro suddenly drew a worried expression.

Tanjiro: "U-Uh, Hibiki-san?"

Y/n: "All they know how to do is Talk Big and slay weakling Demons. One on one I bet I could take each and everyone of those blowhards down a peg without even using my Bachi, easy!"

Y/n said with a smile, flexing his right arm and patting his muscle… bbbuuuttt…

"Is that so? And which do you think would be the easiest to beat?"

A very familiar female voice suddenly said, causing Murada to freeze in place as he turned towards the figure standing directly behind the Oni of Drums, who was seen placing a hand on his chin and thinking deeply about the question.

Y/n: "Hmm… that's a tough one. I already beat Kumari face in… but he refused to really try so… Guess the easiest to beat would be the Weirdo with the Dead Eyes and freaky smile. I mean, she can't even wield a proper sword! I could beat her with my arms tied behind my back if I wanted!"

Y/n said happily, much to the extreme shock of Tanjiro and Murada, as an oddly sinister aura began to appear behind the Oni.

"Is that so? I have to say, I'm quite offended Mr. Oni."

Y/n then finally turned around, coming face to face with the Dead Eyed, Creepy Smiling Weirdo he had just insulted. 

Y/n: "Oh hey! I don't care enough to remember your name."

Shinobu: "It's-"

Y/n: "Imma just call ya Dead Eyes."

Shinobu: "Hmm… would you like to take back anything you just said about me? In my own home noless."

Y/n: "Nope. I'll only apologize because I didn't say it directly to your face."

Shinobu: "Is that so?"

Y/n grew a murderous smile while Shinobu closed her eyes and smiled back at the oni, a Bolt of Lightning sparkling between their eyes as the two glared through their smiles. Until suddenly, Shinobu turned towards Murada.

Shinobu: "Hello again."

Murada: "HMM!"

Murada let out in shock and fear as he quickly jumped to his feet.

Murada: "La-Lady Kocho!"

Shinobu: "Good day to you."

Murada: "You Aswell! GOODBYE!!!"

The slayer said with a bow before quickly running out of the room in a mass of fear and panic.

Shinobu: "Oh My, Leaving so soon?"

Y/n: "PISS BABY!"

The two said after the running slayer, before Shinobu turned towards Tanjiro and a Still Tiny Zenitsu.

Shinobu: "The two of you. How are you feeling?"

Tanjiro: "I think we're alot better now."

Shinobu: "Well, If that's the case then let's have you start your rehabilitation training."

Tanjiro: "Our Rehabilitation Training?"

Shinobu: "Yes. It's a training regime I designed to help you all regain your strength after all the injuries you maintained."

Tiny Zenitsu: "T-Training!?"

Zenitsu suddenly spoke up, jumping up with wide eyes as he had finally recovered from Y/n pouring Medicine Down his throat.

Tiny Zenitsu: "D-Don't tell me! IT'S SOME HELLISH TRAINING ISN'T IT!? SOMETHING SADISTIC! SOMETHING THAT'LL PUT US IN EVEN WORSE SITUATION THEN WE'RE ALREADY IN! RIGHT?!?!?!?"

Shinobu: "..... No, not anything like that."

Tiny Zenitsu: "WHY DID YOU HESITATE SO LONG BEFORE ANSWERING!!?!?"

Shinobu: "I have no idea what you're talking about."

The Hashira said with a smile, causing Zenitsu to panic even more. While Tanjiro tried to calm his small friend down, Y/n was seen staring off into space, a blank expression on his face… all the while, the man was deep in thought.

Y/n thoughts: "Training…."

《Flash》

"During that fight….."

*CCCCHHHHHZZZZ-*

*CLANG!!!*

Hibiki, and Todoroki were seen clashing their Bachi and Guitar together, causing a shockwave.

"I was…"

Todoroki: 
"Oni Secret Art: 
One Man Band!"

Todoroki: 
"Ongekigen Retsurai! 
LIGHTNING STRIKE ORCHESTRA!"

*CCRRAASSHH!!!*

Big Bro Todoroki: 
"ONGEKIGEN RETSURAI: 
RAIDEN GEKISHIN!"

*CCCRRRAAASSSHHH!!!!*

Big Bro Todoroki: 
"YA COUDA HAVE BEEN MY RIGHT HAND BROTHER! BUT YA HAD TO FUCK EVERYTHING UP! Now um gonna kill ya, kill da others! Get ma wish and do things MA way! WITHOUT YA GETTING IN DE DAMN WAY!"

*CCCCCRRRRRAAAAASSSSSHHHHH!!!*

《Flash》

Y/n was seen clenching his fists as the memory of being struck by Yashirama's lightning replayed in his mind. 

Y/n thoughts: "Completely Outclassed… I was only able to beat him because of that odd new power… Kurenai… but… I lost my Bachi using it…"

The man thought to himself, the broken handles of his Bachi still on his person.

Y/n thoughts: "If Todoroki was strong enough to nearly kill me… then there's no telling how powerful the other Oni are…"

Y/n said, an image of Daishinji appearing before his image transformed into Ibuki, causing Y/n to grit his teeth.

Y/n thoughts: "I've made up my mind…"

The oni of drums thought to himself, as he turned and began walking towards the room's exit, catching everyone's attention.

Tanjiro: "Hibiki-San?"

Tanjiro suddenly called, causing the man to stop and turn towards the Water Breather.

Y/n: "Hm?"

Tanjiro: "Where are you going?"

Y/n: "Ain't it obvious?"

Y/n began before he turned towards Tanjiro, revealing his murderous excited expression.

Y/n: "I'm Starting My Rehabilitation Training."

Y/n suddenly said, shocking everyone a bit.

Shinobu: "Is that so? Well you seem quite well and able bodied to be in need of my Rehabilitation Training at all."

Y/n: "Pah! Like I need your weak human training at all. That would just be a waste of time… but… I am in serious need of that kind of training, So I'm making my own."

Tanjiro: "Hibiki-San, you really need Rehabilitation Training? You look fine to me."

Tanjiro said, causing Y/n to sigh as he reached into his clothes.

Y/n: "These beg to differ."

The oni announced as he revealed the broken handles of his Bachi to the group, causing Tanjiro and Zenitsu's eyes to widen, while Shinobu simply tilted her head a bit.

Shinobu: "What are those-"

Tanjiro: "Your Bachi!?"

Tiny Zenitsu: "Those Can Break!?"

Y/n: "... At the Peak of Mount Natagumo, where I fought Todoroki… I was completely outmatched. I nearly died. I beat him in the end… but I couldn't control the strength of that new power… I lost control and broke my Bachi…"

Y/n explained before he placed his broken Bachi back into his clothes with a serious look on his face, only to quickly regrow his Excited expression once again.

Y/n: "So! I need to get to training! I've been slacking, and I refuse to let those 5 be better than me!"

Y/n before gripping the handle of one of his Chokuto, his Murderous expression refusing to fade as he walked towards and swung the door out of the room open.

Y/n: "You kids better get better while I'm gone!"

Tiny Zenitsu: "While you're gone?"

Y/n: "Yup! For the next few weeks, I'm going Yokai hunting. And when I get back, you better be strong enough to fight!"

Y/n began before turning towards the boys once again with a menacing aura around him.

Y/n: "Cause when I do, I'll be putting you idiots though my special Oni Training. I call it Hibiki's Hell!"

Tanjiro: "Hibiki's-"

Tiny Zenitsu: "H-Hell!?"

Y/n: "Yup! Think of it as a way to get stronger!"

Y/n said with a kind smile… before a demonic one replaced it.

Y/n: "And A Way For Me To Punish You Idiots For Getting Hurt So Bad On That Damn Spider Mountain!"

The man said, before his kind smile quickly returned.

Y/n: "So Get Well Soon!"

*SLAM!*

Y/n then slammed the sliding door behind himself, leaving the Insect Hashira alone with the 3 injured boys.

Shinobu: "Oh my. That was quite the interesting conversation, was it not?"

The Hashira said before turning towards the 3 boys, only for her eyes to widen at what she saw.

Excited Tanjiro: "Wow! To think, when Hibiki-San gets back, he's gonna train us himself! I can't wait! Alright guys, we all need to get better as fast as possible, you with me?"

Tanjiro said, literally sparkling with excitement as he turned towards his friends…

Depressed Tiny Zenitsu: "We Are So…"

Ultra Depressed Inosuke: "Gonna Die…"

Only to see a deep dark aura surrounding the Narcoleptic and the Boar as they expected the worst, all the while Tanjiro was still excited despite this. All the while, Shinobu was seen looking at the door Y/n had just exited from, an unreadable expression on her face, only to smile.

Y/n was seen walking through the Butterfly Mansion with a smile on his face.

Y/n thoughts: 
"Ibuki, Oni Of Trumpet & Wind. 
Real Name: Yayori Daishinji.
Status: Collecting "Darlings" AKA Oni Proxys.

Todoroki, Oni Of Guitar & Lightning. 
Real Name: Yashirama Gushiken. 
Status: Deceased.

Kabuki, Oni Of Dance & Blossom.
Real Name: Hakaru Kumari. 
Status: Working As A Hashira.

Touki, Habataki and Nishiki are all Unknowns…"

Y/n listed to himself.

Y/n thoughts: "During my year of training, I focused entirely on the Human Side of my Abilities and completely neglected to explore my Oni powers other than using the Absolute Basics of my Ongeki… that stupid… I might be Physically stronger than them… but I've seen first hand, Techniques don't mean shit against Oni… especially not with the Power of Ongeki… I need to Focus on Maximizing My Oni Arts, along with Learning to control the new powers I've gained from Yashirama."

The man planned as he placed his hand on his chin and walked with closed eyes, Only to smile as he opened his eyes with a quiet chuckle.

Y/n thoughts: "... Then it's Decided! You've been giving my Kappa and Hayasube trouble but I didn't have the time to take you out… until now that is. You'll be the perfect Yokai to practice my new abilities on! For my training, I'll hunt you down!"

The man thought, as the image of a massive pool of water. The water was deep, evident by the pitch blackness that was the middle of said pond… only for two golden eyes to appear in the center of that water, the sound of a crying baby heard radiating from it.

Y/n thoughts: 
"I'll Send A Message To The Gods By Slaying A Soon To Be One Just To Test My Ability!"

The massive pool of water then erupted as a gigantic Monstrous Silhouette was seen rising into the air with bright shining golden eyes.

"Hanzaki Daimyōjin!"

《Oniseikai Secret!》

Y/n: "Song Of Gods Is Back Baby! And Next Episode's All Original! ALL HIBIKI!"

Shinobu: "It appears I'll have a major part to play in the next episode aswell."

Y/n: "WHAT!? How do you even know that!?"

Shinobu: "I actually read our scripts."

Y/n: "HA! Scripts are for losers! Improv's where it's at!"

Shinobu: "It appears I've uncovered why we shoot all your scenes twice."

Y/n: "SHUT THE HELL UP YOU DEAD EYE'D BI-"

Shinobu: 
"Next Time On 
Demon Slayer: Song For Gods 
Episode 18: 
Insects, Oni, and The Immortal God Hanzaki!"

Y/n: "And Now For A Fun Fact!"

Shinobu: "Y/n's Swears Are a part of his Improv, That's why they always get cut short."

Y/n: "ANYWAYS!"