*CLANG-CLA-CLASHING!*

In the darkness of odd Shifting and Changing Mansion, sparks of light where seen flashing through the air, as 4 different katanas, both misshapen and broken in their own odd ways were seen clashing and clanging together with extreme speed and power. The Four Blades were seen locked for a moment, before the two Wielders of said blades jumped back away from eachother, tightly gripping their blades at their sides as they skid across the ground a bit. The Boar Headed Inosuke, and Drum Oni Y/n stood against eachother. A murderous yet excited look on Y/n's face, while the Inosuke, who Y/n suspected to be some sort of Yokai, was seen trembling in excitment at this battle. 

Inosuke: "Hehehehe! HaHaHAHAHAAAAAA!!! So you use swords too, huh? But they look like crap!"

Inosuke insulted as he pointed one of his blades at Y/n, making the boy laugh as he did a very similar point with one of his own blades.

Y/n: "Hmph! This coming from a Kid who's blades have no handles! Hell, those things look like they're would snap at any moment!"

Inosuke: "Ha! So what? These swords do a lot of damage! The way they shred through flesh is what I pride myself on the most."

Hearing this oddly sent a shiver down Y/n's spine as his grin grew.

Y/n: "... Heh... and here I thought you actually were a Human for a second. But... I guess you're just another Yokai."

Y/n said with a dark aura surrounding himself before he took a deep breath, causing a mass of purple flames to surround his blade, this shocked Inosuke for a moment... but it didn't last as Y/n quickly came charging at him with his blades Raised.

Y/n:
"Hibiki Kibōjutsu!
One Bachi Sword Style!
Two Times!
First Verse:"

Y/n roared as he charged forwards, gripping his names tightly as he raised one above his head, while the other was at his side, both ready to strike.

Y/n:
"HARUKA MIRAI!"

*FWOO-GLA-GLA-SHING!*

Y/n then slashed as both of his blades in a single motion, moving the upper blade down and slashing the downward blade up, causing a single Diagonal Slash of Purple Flame to appear infront of him. Inosuke, knowing he couldn't block, quickly jumped back to dodge, crashing through a doorway as he landed inside of a different room. Y/n ready to keep fighting charged right after the Boy jumping into the room with him with his swords raised.

Y/n:
"TWO BACHI SWORD STYLE!
KIBŌJUTSU!
SECOND VERSE:
DOUBLE SHARP!"

*CLANG!*

As Y/n jumped at Inosuke, he swung and slammed down one of his swords at the Boar Headed Boy, forcing him to block with both of his chipped blades, locking Y/n's old and cracked sword inbetween one of Inosuke's blades chips. The Demon Slayer got ready to counter attack, when he suddenly noticed that Y/n was raising his second sword above his head.

*CLAN-FWOOOSH!*

As Y/n slammed his sword sword onto the back of his first, crossing the blades, a mass of flame exploded from the two, quickly sending Inosuke flying back once again. The Boar Headed boy quickly flipped around, stabbing his swords into the floor to stop himself as he faced where Y/n was, only to see that the Oni was cloaked in the smoke from his attack. Y/n was seen slashing the smoke out of his way, as he got ready to attack Inosuke once again, but-

"Beast Breathing!
Fourth Fang:
SLICE N' DICE!"

*CLANG-CLANG-CLANG-CLANG-
CLASHING!*

Suddenly, Inosuke dashed at Y/n, slashing at him like crazy with his blades over and over again, suprising the Oni with his Unpredictable Nature of his attacks, when suddenly the Boar Boy caught Y/n's swords in his own, before slashing upwards, suprising Y/n even more as he was suddenly disarmed, his two blades being stuck inside of the ceiling. Inosuke chuckled as Y/n's eyes went wide.

Inosuke: "HAHA! GOTCHA! NOW DIE!"

Y/n: "Hibiki Kibōjutsu,
No Bachi Style!"

Inosuke slashed both of his sword down at Y/n, nearly killing him, but Y/n easily pivoted on his foot, spinning so that his left side was facing the boy while his right hand was reeled back a small flame appearing in the palm of his hand. Then-

*BLAM!*

Suddenly Y/n sprung forwards, pivoting his entire body around as he right side was facing the boy, as he slammed his palm directly into Inosuke's chest, causing the boy to be sent back into the air a tiny bit as he was quickly winded by the attack... but then

Y/n:
"First Verse,
PALM STRIKE!"

*BOOOM!*

Inosuke: "GAHHAAAAHHHHHhhhhh-"

The small purple flame in Y/n's palm then exploded into a giant Purple Blaze as the power from the attack quickly sent the boy flying. Y/n chuckled as he grabbed his sword and began walking after where Inosuke was sent flying. Y/n then let out a heavy sigh as he lowered his guard a bit.

Y/n thoughts: "Yokai or not, that kid is one hell of a fighter, hell, he fights like an animal. But even then, that last hit should have taken him out for now. I should be able to find and take down that Aobozu and take it down no-"

"AAAAAAAHHHHHHH-"

*BLAM!*

Y/n: "GAH!"

S

uddenly, Y/n was cut off as the Boar Headed Boy he sent flying was seen spinning through the air as he flew right back into Y/n's body, knocking the two of them down. Inosuke was heard groaning while Y/n just growled as he pushed the boy off of himself and onto the ground as he got back onto his feet.

Y/n: "Geez! Are you that itching to keep on fighting ya dumb kid?"

Y/n insulted, causing the Boar Headed boy to quickly jump up, pointing his sword at the Oni.

Inosuke: "Ha! I won't stop fighting until I beat you and become the strongest! I had an attack planned that was totally gonna kick your butt! But that thing threw me!"

Y/n: "Thing?"

Y/n asked as a familiar orchestra of menacing thuds was heard approach the two, quickly making Y/n eyes widen as he saw the figure slowly marching towards them. It was large and monstrous, semi cloaked in the shadows of the Mansions halls.

*Don!*

*Don!*

*Don!*

As the beat approached the two, the hallways changed around Inosuke and Y/n, but instead of the beast being teleported into a different room, it continued it's approach, unaffected by the mansions odd power, revealing it's form.

"dOn'T tRaMpLe ThE rOcKs, DoN't SnAp ThE pInE tReE..."

Inosuke: "Wait... WHAT THE HECK EVEN IS THAT THING!? IT DOESN'T LOOK LIKE A DEMON AT ALL!"

Inosuke yelled, creeped out as the odd skin of the beast shifted and changed to resemble old monk like versions of the people they knew.

Y/n: "That's because it isn't a Demon... that's a Yokai, an Aobozu, The thing that I was trying to Hunt before you got in my Way!"

Aobozu:
"HOW ABOUT HANGING YOUR NECK!?"

The beast roared which shook the mansion a bit as both Y/n and Inosuke got ready to fight the Yokai, both of them with similar auras of murderous excitement.

*Don!*

Slowly walking down a hallway, taking deep and scared breathes with each breath, a certain Demons Slayer was seen with a small boy, walking through the maze of a house and trying to find and exit... until...

Boy: "Excuse me, can we stop Zenitsu-"

Zenitsu: "GYYYAAAAHHHHH! W-WHAAAAA!"

Zenitsu yelled a mass of fearful sounds, before he jumped at the boy, hugging him with a mass of tears streaming from his eyes.

Zenitsu: "Y-You gotta warn me first... before you speak up... y-you can't go suprising me like that... my heart almost jumped out of my mouth just now...."

Boy: "... Sorry about that..."

Zenitsu: "If I had a heart attack you would have been directly responsible! You'd be a Murderer, DO YOU UNDERSTAND!?"

Boy: "Well, it's just that... you've been sweating gasping and shivering really badly..."

Zenitsu: "WHAT ABOUT IT!? I'm doing the best I can here, alright!?"

Boy: "Um, forgive me for saying so... but you're making me really nervous too..."

Zenitsu: "Oh no, I'm sorry! It's just that... if we make to much noise here, the Demon you saw, it might find us right? I just think it would be best to be as quiet as possible! DON'T YOU THINK!?"

Zenitsu asked progressively getting louder... only to stop when an odd fleshy slithering sound was heard... the two then turned... only to come face to face with a four eyed crawling demon with a long tongue.

Tongue Demon: "Hehehehe! A couple of kids! I bet you taste delicious!"

Zenitsu: "WHAT DID I TELL YOU!? IT'S JUST MY LUCK WE'D RUN INTO A DEMON! WWWHHHHAAAAA! STAY AWAY! STAY AWAY FROM US! I'M WARNING YOU!"

Zenitsu and the boy were seen running away from the Demon as it chased after the two, all while Zenitsu screamed in a mass of panic.

Zenitsu: "WE DON'T TASTE GOOD! I'M SURE I TASTE HORRIBLE! THIS KID'S ALL SKIN AND BONES, SO IN SURE HE'D TASTE TERRIBLE!"

Tongue Demon: "How will I know for sure, unless I have a lick?"

*FWOO-CRASHING!*

Sudeenly the Tongue Demon's Tongue shot out of it's mouth and slashed, but Zenitsu was faster, quickly grabbing the boy's and jumping out of the way as the Demon's tongue easily destroyed a pot of water.

Zenitsu: "ARE YOU KIDDING ME!? HIS TONGUE, IT'S LIKE A BOLT OF LIGHTINING!"

The slayer screamed as he continued to run away, jumping and diving as he dodged another attack.

Zenitsu: "THIS HAS TO BE A NIGHTMARE!"

The slayer yelled as he flew through a door with the boy in his arms, crashing into a room.

Boy: "Ah! Zenitsu! You've gotta get up!"

Zenitsu: "Wha! My knees! My fear is in my knees!"

Boy: "This is no time to complain about that stuff!"

Zenitsu: "Just leave me behind ok! Make a run for it!"

Boy: "I can't do something like that!"

The two of them said in panic, with the last words of the boy making Zenitsu jump in shock as he thought to himself quickly in a mass of panic, the Tongue Demon slowly approaching and ready to kill. Zenitsu refused to get onto his feet as his knees shook like crazy in a mass of fear, even with the boy shaking him and pleading for the Demon Slayer's help... but not it was too late.

Tongue Demon: "HeheheHahaaa! I'm going to enjoy using my tongue to scoop your brains out through your ears!"

Zenitsu: "KUAGHH!"

*Thud!*

Boy: "Zenitsu!? Are you?"

Suddenly Zenitsu fell onto the ground going limp shocking the boy for a moment... bbbuuuttt...

Zenitsu: "... ZZZZZzzzzz..."

Boy: "... He's asleep..."

Tongue Demon: "Hehehehahaha! What's up with him?"

The Demon asked as he continued his approach, forcing the boy to grab Zenitsu by his arms and slowly crawl back away from the beast as it quickly approached, a mass of fear on the boy's face as his end was in sight. The Demon then launched it's whip like tongue forwards with a mass of speed ready to ki-

*-SHINK-*

The boy cried as he was about to die, the tongue flying at him... only for the tip of the tongue to suddenly be slashed off. The muscle fell to the ground as the Demon's Tongue released a mass of blood. In suprise, the Demon Slayer rose to his feet, holding his hand infront of the boy as he had an oddly imposing aura around him, the demon was confused by this sudden change in attitude along with the boy behind the slayer. Zenitsu then got into a battle ready post, gripping his sword while his body was ready to dash forwards. Exhaling, a mass of crackling electricity and a thunderous thoom was heard as Zenitsu kept his eyes closed.

Tongue Demon thoughts: "W-What is this sound? This boy, he isn't the same as before!"

Boy: "Zenitsu?..."

*CLINK!*

Zenitsu pushed his blade forwards by the Hilt, as he gripped the handle with his other hand, ready to strike.

Zenitsu:
"Thunder Breathing
First Form:
Thunder-Clap-And-Flash!"

*THO-CHIZZZZ-*

*GLASHING!*

*TTTHHHOOOOOOMMM!*

*Thud!*

*POP!*

Zenitsu: "NAH!"

Suddenly, Zenitsu was on the other side of the room in a massive blast of speed and power, in the same sudden burst, the Demon's Head was cut clean off, landing on the ground and rolling across the floor, all while the Boy watched in awe. Zenitsu then suddenly perked up as his eyes shot open, causing his intimidating aura to quickly be replaced by his original scared one. As the head rolled, Zenitsu turned around, only to see the Demon's head at his feet.

Zenitsu: "... YAAAHHHH!!!! IT'S DEAD!? When did that happen? What the hell!? This is weird! What is this yuck!"

The Demons body then turned to odd ash as Zenitsu came to a stupid realization.

Zenitsu: "Shoichi... di-did... did you just?"

Zenitsu then flew across the room, hugging the young boy with tears in his eyes.

Zenitsu: "YOU SAVED ME! THANK YOY SO MUCH! I'LL NEVER FORGET THAT YOU DID THIS! WHY DIDN'T YOU JUST TELL ME FROM THE START THAT YOU WERE THIS POWERFUL!"

Shoichi was in a mass of confusion as the Demon Slayer continued to praise him.

《Meanwhile》

*FWOOO-BLAM!*

Inosuke: "GAHA!"

Y/n: "DAMMIT!"

*CRASH!*

With Y/n and Inosuke, the two were seen fighting against the Aobozu Yokai, only to be sent flying through a door as they ended up in a large open room. The Demon Slayer and Oni quickly got back onto their feet with their swords in hand as the Blue Monk Yokai quickly approached the two of them.

Inosuke: "GGRRAAHH! WHAT THE HELL IS WITH THIS THING!? Why can't my Blades cut through it's Flesh!?"

Y/n: "No idea... usually there are legends about how to deal with Yokai... but people barely know anything about Aobozus... Looks like we've just gotta-"

Inosuke: "PIG ASSAULT!!!"

Inosuke yelled before he charged at the Yokai ready to kill the beast, quickly causing Y/n to sigh.

Y/n: "Figure out it's Weakness... WHY THE HELL AM I BABYSITTING AGAIN! UGH!"

Y/n yelled to himself before he dashed at the Aobozu with Inosuke. The Boar headed boy jumped up and tried to slam his swords down onto the Yokai, but it didn't even need to block as his blades easily bounced off of the Beast's Skin.

Inosuke: "DAMMIT! WHY CAN'T I CUT YOU!"

Inosuke roared as he tried to slash the Yokai over and over again, getting absolutely nowhere, but as he attacked, the Azobozu raised both of it's arms, ready to slam them down on the boy.

Y/n: "DUMBASS!"

*Fwoosh!*

*KLANK!*

Suddenly, Inosuke was grabbed the thrown out of the way as Y/n took his blade, quickly blocking the smashing attack with his swords.

Y/n: "If Piercing and Slashing attacks won't work!"

*CLANG!*

Y/n sent the Yokai's hands back into the air as he reeled back his right fist, Purple Flames surrounding it.

Y/n:
"THEN USE BLUNT ATTACKS!"

*BOOOM!*

Y/n slammed his fist against the Yokai... but as the Purple Flames from his fist exploded... it was quickly revealed that the Aobozu was undamaged, quickly shocking the Oni that had attacked it. The Yokai then quickly threw it's fist down, ready to smash Y/n, but the Oni quickly dodged out of the way as he slashed his blade at the arm, only for it to bounce off once again. The man then jumped back as the Yokai tried to swipe him away.

Y/n thoughts: "Dammit! I can't get a clean hit on this thing! My blades keep bouncing off! And even then it's beyond strong. Not even Inosuke's blades can cut this thing's flesh..."

Y/n thought in annoyance as he gripped his swords tightly, Inosuke standing by his side, an odd look on his face, seemingly still shocked that Y/n had saved him before and his power.

Y/n thoughts: "I was hoping that Blunt attacks could work... that way I could switch to my Bachi, but since my Punches aren't doing anything, then my Bachi won't do a thing either, I know that much... I need a plan..."

*Don!*

Suddenly, the room around the two and the Yokai changed again, but this room was unlike any other the Demon Slayer and Oni had been in yet. It was looked like a giant Mansion's Courtyard, except there was a large ceiling over said yard blocking out the sun.

Inosuke: "AGH! The rooms changed again! I'm tried of this happening! I'VE BEEN STUCK IN THESE STUPID CORRIDORS AND NOW I'M SENT AN OPEN PLACE LIKE THIS AFTER 3 DAYS!?"

Y/n: "Fight Now! Complain later!"

*THOOOM!*

Suddenly the Aobozu extended it's arm trying to grab Inosuke, but the Boar Headed boy quickly jumped away from the attack. But the Yokai wasn't done yet as it slipped it's arm across the ground trying to slam itself into Y/n, but the Oni quickly jumped up, landing onto the arm before launching himself at the Yokai. He reeled his swords back and got ready to attack with one of his Hibiki Kibōjutsus, only to be stopped when the Aobozu's chest exploded open, revealing a mass of Blue Humanoid Hands with monstrous nail like talons. The hands then quickly extended towards Y/n, forcing the Oni to spin himself around as he slashed the incoming hands into Pieces. Slamming his feet onto the Yokai's chest, he quickly kicked off the Blue Monk launching himself through the air away from the Handsie Monster.

*Don!*

Y/n: "WHAT THE HELL!?"

Suddenly the entire room spun around, changing the Gravity aswell, now Y/n, who was flying away before, began falling towards the Yokai. An odd chuckle was heard from it, before it's chest busted open, revealing a gigantic and monstrous mouth.

Aobozu:
"DON'T TRAMPLE THE ROCKS!
DON'T SNAP THE PINE TREES!"

Y/n thoughts: "N-No! I can't die like this! NOT NO-"

*BLAM!*

Inosuke: "OUT OF THE WAY!"

Suddenly, Inosuke flew onto the scene and kicked Y/n, quickly moving him out of the way of the Aobozu's attack.

*Don!*

Suddenly the room shifted around again, causing Inosuke and Y/n to land on the ceiling of the enclosed Couryard. Meanwhile, the Aobozu wasn't affected by this at all as it still stood on the floor looking up at the two Swordsmen in confusion and annoyance.

Y/n: "What the hell? The entire room spun around? This can't be the Yokai's power..."

Inosuke: "WHAHAHAA! THIS IS SO COOL! IM STARTING TO GET EVEN MORE EXCITED! HEY! HITOSHI DEMON HIDAKA!"

Y/n: "*Sigh* What?"

Inosuke: "The Only Reason I saved you is because I wanna be the one to kill you! Not this weird Blue Thing! So! Why don't you show me what you can do! LET'S KILL THIS THING ONCE AND FOR ALL! IT'S BEEN ANNOYING ME FOR DAYS NOW!"

Y/n: "Tch, fine. Let's take this thing out!"

*Don-Don-Don-Don!*

Suddenly the room began to shift several times, Forwards, Left, Back and then Right. The two swordsmen quickly fell and began quickly dodging the Yokai's barrage of attacks at it began jumping at them swinging it's club like hands and summoning a barrage of hands to slash the two. Knowing their attacks would do anything, Y/n and Inosuke both began dodging and deflecting the attacks the best they could, all while the Room began to randomly shift and change around them.

Y/n thoughts: "Slashing attacks and Blunt attacks won't damage that thing... but When it summons those hands, I can cut those all I want... so what's this things secret."

Y/n thought as the Yokai jumped at him, trying to crush him with it's giant claw. The room then spun again, going back to normal before stopping for a bit. Y/n and Inosuke stood on opposite sides of the beast as it looked inbetween the two of them over and over. It's odd body shifting and changing endless showing different Monk Faces on it... when suddenly Y/n realized something.

Y/n: "Aobozu have always been described as Looking Humanoid... Big Head, Blue Skin and One Eye... but this thing it had a Small Head, Mostly Black Skin hard skin, and no eyes... then... INOSUKE!"

Inosuke: "EH?"

Y/n smiled as he realized just exactly what he was fighting against.

Y/n: "This thing, it isn't the Aobozu's real Body! ALL WE'VE BEEN HITTING IS IT'S ARMOR! MADE OUT OF HARDENED DEMON SKIN AND BONES! That's why we haven't been able to hurt it at all!"

Apon hearing this, the Yokai quickly spun around and Jumped at Y/n, but the Oni quickly rolled out of the way, before jumping away from the beast towards Inosuke's side.

Inosuke: "Wait! All of that's just some stupid Armor!?"

Y/n: "Yup! Get past that and your swords will Rip up that Yokai's body like it's nothing."

Inosuke: "HAHAHAAHA! ALRIGHT! But how do we do that?"

Y/n was silent for a moment as he took a deep breath and closed his eyes for a moment, listening to the Symphony of Life around him.

Y/n thoughts: "... There's gotta be some sort of weakness... some sort of gap in this thing's armor... some way to peel it away... some way to... Shatter It!"

Y/n suddenly thought in realization as he listened closely to the world around him.

Y/n thoughts: "I can hear it... the Endless Flowing River... Tanjiro's Water Breathing Style... and then there's Inosuke's Constant Roar that is Beast Breathing... Inosuke's is too complicated though... I need to dumb it down..."

Y/n: "Boar Boy, think you can distract the Yokai for a bit?"

Inosuke: "HA! Distract? Now that I know it's secret I can kill that thing!"

Y/n: "Go for it! I believe in you!"

Y/n said causing Inosuke to be shocked for a moment as Y/n had a giant smile on his face. The Boar boy then laughed as he dashed at the Yokai... but then...

*DO-DO-DO-DO-DO-DO-DO-DO-DO-*

Rapidly the room began to spin around them forcing the two of them to adapt. Inosuke began quickly bouncing off anything he landed on attacking the Yokai and keeping it away from Y/n. But Y/n in the meantime was concentrating as he rolled and jumped around the constantly moving room.

Y/n thoughts: "The Constant Roar of Beast Breathing... Dumb it down... deconstruct it... THERE! The constant blowing and destructive Whipping Winds of a Hurricane! I don't know this Breathing Style, I've seen it used before... but I've seen enough of Beast and Water Breathing to Fuse the Two Styles Together, INTO THE PERFECT ONE FOR THIS YOKAI!"

Y/n thought to himself as he took a deep breath, quickly controlling his breathing... the sounds of a Hurricane and a River in his mind... slowly coming together into a single melody. A endless, calm yet harsh crackling song...

Y/n: "The Flowing Melody, that Suddenly Turns into a Striking Song!"

Suddenly, mist began to appear all around the giant room as it spun more and more, Inosuke was shocked as he could see his breath, he then turned towards Y/n only to see the terrifyingly menacing yet murderous look on his face as his eyes shined a fierce blazing purple. Inosuke then quickly jumped away as the Aobozu turned towards Y/n aswell... he stood in a brand new stance, ready to attack. Then, he began to dash towards the Aobozu, unaffected by the Rooms spinning as the two stood on the same plane. Y/n held his swords by his sides, the rips of them going right over the ground, leaving a shinning trail of an odd crystal like substance behind them. The Aobozu tried to launch an attack at Y/n, but the man easily and fluently dodged out of the way like a river, before he jumped up into the air high above the Yokai with his swords raised above his hard, a harsh chill flooding the room as it continued to spin around them.

Y/n: "TAKE THIS!
HIBIKI KIBŌJUTSU!
TWO BACHI SWORD STYLE!
ICE BREATHING!
FIRST FORM:"

An mass of Water Erupted from Y/n's right blade, while a mass of Wind swirled around his left, the two came together as sudden mass of frozen crystals, and then with all his might, Y/n's Fluent Movements became Harsh and Stright Forward as he Striked.

*SHI-SHI-SHI-SHI-SHI-
CCCCRRRRAAAA-
GLASHING!!!!*

Y/n:
"Flash Freeze Frenzy!"

Y/n landed right behind the large Yokai his swords at his sides... but as he did, it was quickly revealed that behind him, was a Aobozu frozen in a giant block of Ice. Y/n then quickly spun around and kicked the Ice, causing it to crack like crazy before shattering into pieces... along with the Armor surrounding the Yokai. The room continued to spun, but now that he was out of his armor, the Yokai was affected by the constantly changing gravity, revealing his true form.

Aobozu: "DON'T TRAMPLE THE ROCK! DON'T SNAP THE PINE TREES! WHY DON'T YOU HANG!?"

The Aobozu roared before it's mouth suddenly shot open, revealing it's terrifying teeth, but as he did this, a mass of Hands shot out of said mouth, way more than before as he floated in the middle of the spinning room. The hands all quickly extended and shot forwards towards Y/n and Inosuke, but the hands going after Y/n suddenly Froze into Ice as Y/n slashed them away.

Y/n: "GO FOR IT BOAR BOY! FINISH THIS BASTARD OFF!"

Inosuke: "ALRIGHT!"

Inosuke quickly landed before jumping up once again, landing on one of the incoming arms as he charged at the Yokai.

Inosuke:
"Beast Breathing!
Eighth Fang:"

*GLA-SLA-SCA-SLASHING!*

Inosuke:
"EXPLOSIVE RUSH!"

Inosuke charged at the Yokai with extreme speed, but as he did he quickly and easily slashed away any of the arms that got near him, as he got closer and closer towards the Yokai's head, the Aobozu then quickly retraced the hands into it's mouth, trying to protect itself, but Inosuke just jumped off at the last second, raising his blade.

Aobozu: "DON'T TRAMPLE THE ROCKS! DON'T SNAP THE PINE TREE!"

Inosuke: "Y'know! When you tell me not to do stuff like that! IT MAKES ME WANNA DO IT EVEN MORE!"

Aobozu: "WHY DON'T YOU HANG!?"

Inosuke: "WHY DON'T YOU YA UGLY BASTARD!
BEAST BREATHING!
THIRD FANG:
DEVOUR!"

*GLA-SHING!*

Aobozu: "GAHAHAAAAA!!!"

Inosuke quickly slashed with his two blades, quickly and easily decapitating the Yokai with a Duo of Horizontal Slashes. The Yokai was dead and as it's body began to fall and it's reign of terror was stopped... something else didn't stop...

Inosuke: "HAHAHAAAAA! I GOT HIM! I FINISHED HIM OFF! THAT'S MY KILL HITOSHI DEMON HIDA-"

*DON!*

Inosuke: "WH-WHAAAA!!!"

Suddenly the Room around then turned once again, as Inosuke quickly began falling towards a door, easily flying through the paper.

Y/n quickly fell before rolling onto his feet stopping any damages he would have gotten. He then quickly turned towards where Inosuke fell and...

Y/n: "... I would feel bad... but he kept calling me a Demon, so I don't care."

Y/n said when suddenly the room slowly swirled around, going back to normal. Y/n soflty landed on the ground, while the corpse of the Yokai landed next to him with a meaty thud. It's Cobalt Blue Blood spilling from it's neck, the clean appearance of the cut actually amazed Y/n a bit, seeing all of the skill Inosuke had in a single attack. Y/n let out a heavy sigh as he sheathed his twin blades. The Oni then closed his eyes, hearing the Demonic Song of Drums slowly fading away from the mansion.

Y/n: "Sounds like Tundra took down the Demon that was making this place spin and teleport me around. And he didn't even need my help... I should thank him though... if it wasn't for his Water Breathing... I wouldn't have been able to develop Ice Breathing... I wouldn't have been able to beat that Yokai..."

After that, Y/n looked down at the Yokai's Corpse, glaring at it's form.

Y/n thoughts: "Aobozu... a Yokai that inhabits abandoned houses... it Hangs Woman and Eats their Children... and that phrase it kept yelling... the song of a children's game..."

The Image of Children jumping around with Pine Tree Sticks and Rocks on the ground around them, the one to snap the Sticks or Trample over the Rocks would lose and have to catch the others...

Y/n thoughts: "This bastard was definitely using that to lure kids in... and then using it hands to devour them... TCH!"

*CRASHING!*

Wind and Water surrounded one of Y/n's swords before fusing into Ice, he then slashed at the Yokai's corpse, freezing it into a mass of Ice before it shattered into nothingness, leaving only the Cobalt Blood left.

Y/n: "To Kill Mothers, Trick and Consume Children Of Your Own Free Will... You're No Better Than A Demon, You Should Have Died Sooner."

*Ting!*

Y/n glared when suddenly an familair bell ringing was heard. Y/n looked around in confusion until.

"Meow."

*Fwoosh!*

Suddenly, a Calico cat appeared out of thin wearing a small box on it's back along with one of Yushiro's Papers on it's collar... but that wasn't all as it had a Termari Ball trapped onto the Box that sat on it's back, along with a note tagged to it.

Y/n: "Oh, you must be that Cat, Tamayo sent to take the blood Tundrado and I collected. Sorry, but I didn't kill any Demon, just a Bastard Aobozu."

The Cat then turned around and sat infront of Y/n, revealing the Temari and Note. Y/n took the two off and began petting the cat as he read the note, which read!

"Dear A̶n̶n̶o̶y̶i̶n̶g̶ ̶D̶e̶m̶o̶n̶ ̶S̶l̶a̶y̶e̶r̶ ̶a̶n̶d̶ ̶B̶a̶s̶t̶a̶r̶d̶ ̶O̶n̶i̶  Tanjiro and Hibiki.

I am writing this note to inform you to send any Yokai blood that you happen to find via Chachamaru, the cat.
- Yushiro

HIBIKI-SAMA! Please take this Temari! Lady Tamayo said that it might help you in a fight!
- Susamaru

Please stay safe you two. I believe in the two of you. Good luck.
- Tamayo."

Y/n: "Heh... that's kinda nice... wish I could write them back, but It's not like I have anything to... Anyway, if they want Yokai Blood, then they've got it."

Y/n then took a small syringe like device out of his clothes and stabbed it into the puddle of Cobalt blood, collecting it. He then placed said syringe into the Cat or Chachamaru's bag before giving it a small pat on the head. The Cat then let out a meow as it dissapeared leaving Y/n alone with his Termari ball.

《Short Timeskip》

*Ting! Ting! Ting! Ting!*

Y/n:
"🎵With Ev-ery Meet-ing-a...🎵"

*Ting! Ting!*

Y/n:
"🎵The-ere comes-a Far-well-a...🎵"

*Ting! Ting!*

Y/n:
"🎵Sa. Sa. Sa. Sa.
Sa-Sa, Sa-Sa,
Sayonar-"

Tanjiro: "Hibiki-san?"

Y/n: "KAH!"

Y/n was seen peacefully singing to himself quietly while bouncing his new Temari as he walked down the halls of the maze that was this mansion... when suddenly he stopped when Tanjiro appeared from around a corner. The Demon Slayer looked around a bit before smiling when he saw the Oni standing there.

Tanjiro: "Hibiki-san! Was that you singing just now?"

Y/n: "What? Me? Sing? No! Must have been some weird Demon or something."

As Y/n said this, the young girl from before, along with a new boy wearing an Orange Kimono appeared Tanjiro, with the girl walking and the boy on Tanjiro's back.

Tanjiro: "But, I heard that ball bouncing in tim-"

Y/n: "You wanna keep making assumptions or you wanna get punched in the head?"

Y/n threatened causing Tanjiro to chuckle nervously.

Boy: "Who's this?"

Tanjiro: "Oh! This is my Friend, Hibiki-san! He was in the mansion searching for you too."

Y/n: "Yo. So you were the kid who got himself Kidnapped by a Demon, right?"

Boy: "Y-Yes, my name Kiyoshi, thank you for helping resc-"

*BLAM!*

Kiyoshi: "GAHA!"

Teruko: "BIG BROTHER!"

Tanjiro: "HIBIKI-SAN! WHAT ARE YOU DOING!?"

The two suddenly said in shock as Y/n had punched Kiyoshi in the head. Y/n then glared as he spoke up.

Y/n: "YOU DUMBASS KID! YOU NOT ONLY ENDANGERED YOURSELF BUT YOUR YOUNGER SIBLINGS ASWELL! YOU'RE THE ELDER BROTHER! MEANING YOU SHOULD BE PROTECTING YOUR SIBLINGS NOT THE OTHER WAY AROUND! MEANING WHEN IT GETS DARK OUT YOU FIND A PLACE TO STAY AND GET HOME WHEN IT'S SAFE IN THE MORNING! YOU GOT THAT!? Geez! You're lucky you know that? Not only was there a Demon here, but a Aobozu aswell. Meaning even if you somehow survived the Demon then that Yokai would have still eaten both you and your younger siblings! Take this experience and learn to be a better brother and more responsible, alright?"

Kiyoshi: "Y-Yes Sir! I understand! I'll be more responsible from now on!"

This quickly suprised Tanjiro as Y/n let out a heavy sigh.

Y/n: "Alright then. Now that that's out of my system, we can get the hell outta here."

Tanjiro: "Let me lead the way Hibiki-san! I've already got Zenitsu's scent!"

Y/n: "K."

Y/n then began following Tanjiro as he lead the way out of the Mazelike mansion... when suddenly the boy perked up, freezing in place.

Y/n: "Oi, what's up?"

Tanjiro: "N-Nothing, but we should hurry up."

Tanjiro said giving Y/n a serious look, causing the Oni to sigh as he quickly got the Silent message.

Y/n: "Right. Follow me."

Y/n then rushed forwards, quickly and easily leading the way towards the exit with the other following just as fast... until...

*BLAM! BLAM! BLAM!*

Inosuke: "TAKE THIS! COME ON! MOVE IT! NOW YOU SPINELESS COWARD! DRAW YOUR SWORD AND FACE ME!"

Inosuke was seen kicking Zenitsu while the Yellow boy himself was hugging Tanjiro's box close to his chest, quickly making both Tanjiro and Y/n's eyes widen at the scene. The Injured Zenitsu the faced the trio as they stood there in awe.

Zenitsu: "Tanjiro... I protected it... you told me... this was more important to you... than your own life... that's why... I did it..."

《Onisekai Secret!》
[Thanks to Medella_Clockworks for the Idea]

Y/n: "HAHAHA! WELCOME HIBIKI THE AMAZING MASTER OF ICE BREATHING!"

Tanjiro: "Woah! Ice Breathing! Who did you learn that from?"

Nezuko: "Hmm!"

Y/n: "Hehe! That's the thing, I created it!"

Tanjiro: "Woah! Seriously! How did you manage that?"

Y/n: "By combining your Water Breathing and the root of Inosuke's Beast Breathing! I CREATED AN ENTIRE NEW STYLE!... Now that I think about it, what other styles could I combine and create? Maybe Thunder and Water? What would that even make?"

Nezuko: "Hmhmhmm!"

Y/n: "Storm Breathing! Perfect! I'M SO GONNA KILL THE HELL OUT OF DAISHINJI WITH IT!"

Zenitsu: "HEY! YOU HAVEN'T EVEN SEEN MY THUNDER BREATHING YET! SO STOP ACTING LIKE YOU ALREADY KNOW IT!"

Y/n: "Buzz kill..."

[END]

I might add these to previous chapters... Maybe...

ANYWAYS!