─┉┈◈◉◈┈┉
Ｐａｒａｌｌｅｌ Ｂａｔｔｌｅ
ａｇａｉｎｓｔ
Ｔｈｅ Ｙｏｕｎｇ Ｄｅｍｏｎ Ｌｏｒｄ
魔王
In his consciousness, Y/n stares menacingly at the demon slayers who refused to leave his consciousness.
Giyuu, Sanemi, Obanai, Mitsuri, Tanjiro and Nezuko stood in shock.
Y/n has a bigger, taller and muscular body. He had a black horn on the right side of his forehead, along with vein-like patterns in his forehead near his horn.
But his most striking new feature is the water stream pattern that covers his skin, circling around and on his back there is a pair of skeletal wings which are black like his horn and appear as a thick zig zag.
Y/n dropped his scythe on the ground as he began to check his new form, inspecting his claw-like hand then glances behind noticing a skeletal wings.
"It can't be." Giyuu muttered. Nezuko growled when she saw the woman they tried to get rid of appeared behind Y/n.
Her claws grasp on the boy's face, and make him look at her as she leaned closer. Y/n's eyes met with hers.
"Do you like this form of yours?"
"Hey you! Stay away from my Tsuguko!" Mitsuri yelled as she whipped her nichirin blade.
"Your Tsuguko?" Y/n grabbed onto his Quirk embodiment and tries to release himself from her grasp.
The woman pierced her claws on Y/n's face causing it to bleed. "Don't resist. You belong to me, so act like it."
"Hey! Stop that!" Giyuu yelled in anger.
Y/n whip his head and glared at her. His expression shows a declaration that he's supreme one between them. She stared in fascinated horror at Y/n's dominance towards her.
"This is your chance. If those slayers wants some fight to the death then give them one."
Y/n gazed back at the Demon slayers and Nezuko, he darkly stares at them with hatred.
"Kill them. You finally have a target for your rage, Y/n-sama. There's no need to hold back anymore. Let's kill them whoever gets in our way."
With that, the devil woman steps back away from Y/n into the shadows.
"Y/n!" Glancing at his ancestor who was walking towards him, calling out his name. "Listen to me, whatever that woman told you, or showed you, aren't real. They aren't true. She's just playing with your mind."
"It... doesn't matter anymore..." Y/n narrowed his eyes at Giyuu. "I just don't care anymore... Everything aching.. and I want to relieve it by killing anyone."
Giyuu grabbed the young boy by his shoulders. "Your Quirk messed you up so bad! Pull yourself together!"
However, Y/n slapped away Giyuu's arms and pushed him.
"Giyuu-san!" Tanjiro exclaimed.
"Tomioka-san!" Mitsuri added.
"That brat!" Sanemi clenched his teeth.
"You are in my way. I had enough of everything. I just want to relieve my pain by killing everyone. " Y/n raises his hand, his death scythe came flying towards his hand.
"No! We're not giving up on you Y/n!" Tanjiro shouted.
"In that case, I erase you from my heart.."
Y/n instinctively manipulates the chains and launches towards the Hashiras and Nezuko. Before the attack could hit them, they scattered around to avoid it.
Sanemi lunged at Y/n with his blade. The chain interrupts, acting as a shield to block the attack, then grew a spike to impale the Wind Hashira.
Sanemi luckily jumps back away before it could impale him.
"Serpent Breathing, Second Form: Venom Fangs of the Narrow Head!"
(Hebi no kokyū, Ni no kata: Kyōzu no Dokuga)
Obanai dashes behind Y/n at blinding speed but his slash was blocked by the chains again, before the chains formed into sharp spike and stabbed his chest, dropping Obanai down.
"Iguro-san!" Mitsuri exclaimed. Y/n readies his scythe and leaps towards the Serpent Hashira.
Obanai groaned before he dodged the next attack, but the sheer force of Y/n's slash created a cut in the ground.
Some of the chains pursuit on Tanjiro and Mitsuri, circling them around.
"Dance of the Fire God, Waltz!"
(Hinokami Kagura, Enbu)
"Love Breathing, Second Form: Love Pangs!"
(Koi no kokyū, Ni no kata: Ōnō Meguru Koi)
Their slashes were blocked by the chains that instantly went to defensive, surrounding Y/n.
"These chains?! We can't land a hit on Y/n-kun?!" Mitsuri exclaimed.
Y/n flickered out of range and appeared behind Mitsuri and Tanjiro, striking them with his own scythe and causing a linear explosion that pushed the two backwards.
"That was close!" Tanjiro said before turning to Mitsuri. "Are you alright, Kanroji-san?"
The chains quickly changed into spear and dashes forward to impale Tanjiro and Mitsuri, but the spears were slices burned into ashes. Both Tanjiro and Mitsuri rejoiced at the person in front of them.
"Rengoku-san!"
"Hmm! So this is what happened while I was running late to enter my boy's consciousness? I can't believe it!" Kyojuro declares before he charges forward to slice another wave of chains.
"Another of one them invaded me." Y/n mumbled.
While Y/n was distracted by Kyojuro's arrival, Giyuu snucked from behind while avoiding the chains. Soon, Y/n noticed him and swung his scythe at his ancestor.
Giyuu dodges Y/n's scythe by leaping over it, they make eye contact towards each other in this moment.
Before Giyuu could unleash a technique in midair, he was unaware of the chains surrounds him and snatches him away from Y/n, trapping him by the wall.
Giyuu grunted from the impact on his back as the others shout his name in concern. Y/n made his way towards him, preparing to get rid of him while Giyuu struggle to free himself from the chains.
However, Y/n halted when someone stood between them.
"Moshi mosh, Tomioka-san." Giyuu opened his eyes and saw Shinobu in front of him.
"Kocho.."
"Having trouble, I see." Shinobu unsheathed her nichirin blade stinger, then jabs at the chains to break in half, allowing Giyuu free.
"Shinobu-chan! You're here too!" Mitsuri said.
As both Hashira turn to face Y/n, the sight startles him and took a few steps back.
"What's wrong Y/n-sama?"
'They're... Why do they look familiar..'
"Huh?"
Y/n clutches on his head. 'I can't remember them! But why do they look familiar..! Mom?! Dad-'
"They're not. You don't have parents. Don't bother remembering it. Just get rid of them or they will kill you! Y/n-sama!"
Y/n starts to seethe at the thought of them wanting to kill him. "Aaaargghhh!!" He throws a tantrum at Giyuu and Shinobu who quickly readied their blades and quickly blocked Y/n's attack with the scythe.
"Is that woman spitting lies on you again?" Shinobu questioned, as she hastily jab at Y/n who easily blocked it with his scythe. "You, of all people, shouldn't listen to someone like her, Y/n-kun."
Y/n didn't respond to her as he continue to attack them.
"Water Breathing..!"
(Mizu no kokyū)
"Insect Breathing..!!"
(Mushi no kokyū)
Through the eyes of Y/n, the devil woman observes the Hashiras attempting to talk Y/n out all the way on top of a pillar.
"No matter how much you try... It won't do anything to get him back. Silly humans."
As Tanjiro dodges another chain, he caught the scent of the woman, he looks upward at the pillar and spotted the woman watching them.
"Onii-chan!" Nezuko pushes Tanjiro away and the chains caught her.
"Nezuko!" Tanjiro gasped before he got caught as well. Sanemi, Obanai, Mitsuri and Kyojuro were also caught. They were being lifted in the air.
"Shit!" Sanemi cursed.
"I can't cut the chains!" Obanai exclaimed as he tries to slice the chains.
"Tomioka-san! They got caught!" Shinobu points out as she and Giyuu glances back.
Y/n swiftly turn his head at them, "Crush them!!" The chains begins to tighten around them, causing them to cry out in pain when they were being crushed.
"Y/n don't!" Giyuu shouted.
Before the Hashiras and the Kamado Sibling were crushed to death, the chains on Tanjiro and Nezuko were sliced in half, releasing the siblings.
"Nezuko-chaann!!!" The blonde caught Nezuko in midair and landed safely on the ground. "I was worried! I've been looking for you at heaven but you weren't there!"
"Bonjiro!" The one with a boar head ran up to Tanjiro who recovered from the fall and smiled seeing his friends.
"Inosuke! Zenitsu!"
Inosuke turn towards Y/n. "I see my underling is in trouble with his Quirk, don't worry my underling! The king of mountains is here for you!"
'They just keep coming..! They keep forcing to enter my consciousness!' Y/n thought before an explosion erupts from the top. 'Why won't they just leave me alone?!'
To the relief of everyone, Tengen emerges from the dust cloud with three more figures. Tengen rushes forward, cutting all the chains to free the Hashiras.
"It was unflamboyant of me for being late." Tengen said.
"Sorry we took so long." Gyomei appears and says that. Kanao and Genya also appeared behind them.
'They're all here.' As Y/n thought, he was being surrounded by mist.
"Mist Breathing, Seventh Form: Obscuring Clouds."
(Kasumi no kokyū, Shichi no kata: Oboro)
Y/n stepped aside when a nichirin blade attempts to slash him from behind. Y/n saw a single strand of his hair were cut by Muichiro.
"Return to yourself first before I praise you for defeating the Uppermoon one." Muichiro said before they clashed a few times, Y/n found an opening to kick Muichiro towards the others.
All of them stand together and look towards Y/n.
"Now. What do we do?" Obanai asked.
"Merely our presence here in his subconscious will keep him from instantly killing those heroes." Sanemi said.
"Disgusting... What are these humans doing here..! Get away!" Y/n launches even more chains towards the Demon slayers, sending them back.
"He's just being manipulated by his Quirk!- Where is he?" Giyuu goes to look for Y/n, who rushes behind him and does a flurry of slashes still sending Giyuu back.
Y/n gathers the chains and formed into massive spike. He launches the spike towards the Hashiras.
"I'll take care of this!" Tengen rushes forward, taking out three explosive beads, he hurl the beads towards the spike and jumped.
Sound Breathing, First Form: Roar!"
(Oto no kokyū, Ichi no kata: Todoroki)
Y/n watches as the area explodes, he deflects a piece of the spike with his scythe and narrowed his eyes. Y/n sees Muichiro emerges from the smoke in the air towards him and lift his blade again.
"Mist Breathing, Third Form: Scattering Mist Splash!"
(Kasumi no kokyū, San no kata: Kasan no Shibuki)
The nichirin blade and scythe collided, creating a shockwave thus clearing the area for an intense clash.
Both Muichiro and Y/n glare at each other before the Mist Pillar realizes the scythe impaled him on his shoulder, causing it to bleed.
Before they could make another move, Shinobu appears on their side and thrust her stinger nichirin blade at Y/n who stumble back.
"Insect Breathing, Dance of the Bee Sting: True Flutter!"
(Mushi no kokyū, Hōga no mai: Manabik)
Y/n retaliates by kicking Shinobu back and pushed Muichiro away with his scythe. Y/n leaps away when a spiked flail came towards him.
"Stone Breathing, First Form: Serpentinite Bipolar!"
(Iwa no kokyū, Ichi no kata: Jamongan - Sōkyoku)
Gyomei manipulates the chain by rotating it thus causing the axe and flail to also rotate in order to drill and grind right through Y/n. The young demon spins his scythe rapidly, deflecting Gyomei's axe and flail.
"I never knew young Y/n could be skillful with that weapon." Gyomei mumbled.
Kyojuro closes the distance between him and Y/n in order to attack with his flames. "Y/n my boy, you've grown very strong and overcome everything. However, it seems you're having trouble with your own Quirk."
"Don't worry Y/n-kun! We know that you really never wanted this to happen! We forgive you!" Mitsuri shouted as she jumps in the air.
"Flame Breathing, Fifth Form: Flame Tiger!"
(Honō no kokyū, Go no kata: Enko)
"Love Breathing, Third Form: Catlove Shower!"
(Koi no kokyū, San no kata: Koi Neko Shigure)
Kyojuro engaged with a raging flaming tiger and Mitsuri unleashes a series of ranged arced attacks in quick succession. But Y/n was able to deflect their techniques with no difficulty.
"Serpent Breathing, Second Form: Venom Fangs of the Narrow Head!"
(Hebi no kokyū, Ni no kata: Kyōzu no Dokuga)
Obanai ambushed Y/n as he dashes behind him to lop his head off. Y/n predicted this and caught Obanai's blade with his hand. He threws Obanai towards Tengen who was about to attack next.
As Y/n grabbed his scythe back and prepares for his opponents attack, he got startled when he received a deep cut on his back. Y/n turn his head at his assailant, which is Sanemi.
"Wind Breathing, Second Form: Claws - Purifying Wind!"
(Kaze no kokyū, Ni no kata: Sōsō - Shinato Kaze)
Sanemi unleashes four vertical slashes down like claws on Y/n, who evades it.
"Water Breathing, Fourth Form: Striking Tide!"
(Mizu no kokyū, Shi no kata: Uchishio)
Giyuu attempts to slice his descendant, only for the young demon to deflect each hit and kicks Giyuu away just as Muichiro and Kyojuro come forward in his stead.
"Stop holding back! Giyuu!" Sanemi yelled and swings his blade at Giyuu's, turning both of their weapons bright red.
"Now is not the time to go easy on your precious descendant!"
The young slayers watch in amazed at the battle in front of them. Barely keeping up with the Hashiras teamwork and how they are moving at blinding speed while Y/n single handedly takes them on.
"We should go and help them now-" Tanjiro was about to join the fight, but he was stopped by Kanao.
"Tanjiro. We have something else we need to take care of." Kanao said.
"Yeah! Let those guys handle Y/n, while we get rid of that bitch!" Inosuke points his nichirin blade at the top of a pillar where the devil woman is, staring down at the battle.
"Right. She is the reason why Y/n have to suffer like this." Tanjiro uttered in very dark tone and Nezuko growled, angrily.
"Maybe. If we dispatch her, do you think Y/n will finally be free?" Zenitsu questioned.
"Only way to find out." Genya said.
The embodiment of Y/n's Quirk continue to watch the fight, seeing the sparks from clashing blades and being covered by the smokes.
"Y/n couldn't unleash his full strength in the real world because of them." She muttered. Y/n emerges from the smoke, showing no difficulty of fighting the Hashiras. She grinned maliciously. "I'll leave everything to you-"
The woman hears small footsteps coming from behind, it got closer until the woman's head came off. The attacker is none other than Nezuko.
"You again?!" Nezuko tackles her and both fell from the massive pillar. They crashed to the ground, creating a crater.
The devil stands up as her head regenerates, she found herself being cornered by Tanjiro and his friends.
Y/n notices this but before he could rush over, Tengen blocked his path.
"Hold it right there, kiddo. You're not going to help that devil. We're your opponent here." Tengen smirked. Before he silently muttered 'Beat her ass our Tsugukos'.
"Still thinking you can defeat me?" The devil asked. Tanjiro's group respond by unsheathing their nichirin blades. The woman scoffed before she summoned her own weapon. "Fine then. I like your confidence. I'm going to savour everything as I terminate you."
As the words escaped the woman's lips, Tanjiro bolted forwards, thrusting his nichirin blade in the woman's direction.
Grunting, the devil leaps backwards, before swinging her massive saw blade upwards in a wide arch. The blades met causing a loud clanging sound.
'Heavy! Her weapon is heavy!' Tanjiro thought, struggling to push back.
The woman was laughing as she push down her weapon at Tanjiro, but immediately stopped when Zenitsu dashes around them, he charges towards the woman, dragging her to the ground.
"Get off!" The devil attempts to claw Zenitsu, but the latter slice it in half.
After regenerating her arm, Inosuke and Kanao ran towards her.
"I'll gnaw you to shreds, trash!"
"Beast Breathing, Fourth Fang: Slice 'n' Dice!"
(Kedamono no kokyū, Shi no kiba: Kiri Komazaki)
Inosuke delivers multiple diagonal double slashes with both swords. The woman uses her blade to parried his slashes.
As Kanao prepares to use a Breath of Flower Form to attack her from behind. The woman bats her away with her saw blade and moves away when a gunshot almost hit her.
"Damn. I missed." Genya uttered before reloading.
Nezuko readied her claws and keep up with the devil woman. Nezuko throw a swipe and kicks in blazing speed at the woman.
"You brats!"
Meanwhile, Y/n took a quick glance towards them before he dodged Gyomei's flail and Mitsuri's sword whip.
"Y/n!"
The boy stopped his movements as the Hashiras did the same. They were confused at Y/n's sudden halt before they saw the person behind Y/n.
"M/n." Shinobu muttered.
Y/n slowly turn his head around and saw his mother who quickly hugged him.
"Please, Y/n. You can't do this to them. You can still fight back. Don't let her chase out your good-side."
The devil glance at Y/n. "Reject her. Y/n-kun."
"Get off." Y/n pushed his mother away from him. M/n looked shock and disbelief at her son, rejecting her call.
The young demon swung his scythe, sending multiple slashes and chains at the Hashiras. Tengen and Gyomei stood in front and prepares their techniques.
"Sound Breathing, Fourth Form: Constant Resounding Slashes!"
(Oto no kokyū, Shi no kata: Kyōzan Muken)
"Stone Breathing, Fourth Form: Volcanic Rock, Rapid Conquest!"
(Iwa no kokyū, Shi no kata: Ryūmongan - Sokusei)
While the two Hashiras defend against Y/n's attacks, Shinobu was worried about M/n who was still close to Y/n.
"M/n-san! You have to stay away from Y/n!" Shinobu shouted. "If you die here, he'll completely lose his humanity!"
A laugh suddenly caught M/n's attention, that belongs to the woman who was still fighting Tanjiro's group.
Preparing to unleash another technique, someone grabbed his scythe and forces him to look at the person, who was his father.
"Y/n! For once, hear us out! Why in the world would you think we would hate you? That woman who has been messing with you, corrupting you-" F/n said.
"I've had enough with this! Get away from me!" F/n quickly backed away from his son when he swings his scythe.
"Even Y/n's parents can't reach him?" Tanjiro said.
"Why can't you accept that the "Y/n" you knew is long gone?" Y/n takes down Kyojuro and Obanai.
"It's already over!" Y/n slashes Mitsuri and Muichiro.
"Y/n please! Don't do this!" M/n tries to tell Y/n.
"See for yourselves!" Y/n points at the shattered pieces of his spiritual core. "With that thing destroyed, your goodie Tomioka Y/n is dead!"
He manipulated the chains to trapped the Hashiras again, leaving Giyuu and Shinobu.
"Stop! Y/n you can't do this to them!" F/n shouted.
"And none of you will ever stop me from becoming to demon lord!"
With blinding speed, Y/n went for a killing slash that will end Giyuu and Shinobu.
'Crap!' Giyuu thought.
Both stood there, not having enough time to react and waits for Y/n's attack.
However...
Two people took the slash as they stand between them and Y/n.
Giyuu and Shinobu looked in horror when Y/n's parents protected them. They caught them before they fell down.
"Keep it together F/n! If you disappear here, Y/n's Quirk will corrupt him even more!" Giyuu said.
"I'm sorry Giyuu-sama... I couldn't.. I failed to be his father.." F/n uttered.
"M/n-san. Don't give up yet. You can't disappear here!" Shinobu said.
Tears fell down on M/n's eyes as she gaze at Y/n. "Shinobu-sama... I beg of you.. Don't let my son turn into what he hate the most.."
Everyone was completely shocked as M/n and F/n fades away,
"Failed to be my father? Her son? Ridiculous." Y/n spoke out. "Are you telling me that is my mother?"
"How could that be. I have no recollection of being born from such a filthy womb."
Y/n's insult to his mother strike a nerve in Giyuu and the others, making them seethe with intense rage. The sound of intense breathing makes Y/n look at Gyomei, his eyes widened when Gyomei breaks the chains that restrain him.
"You shouldn't talk about your mother like that Y/n." Gyomei said, before swinging his axe and flail to destroy the remaining chains, setting the Hashiras free.
"I think I just did." Y/n smirked.
"Love Breathing, Sixth Form: Cat-Legged Winds of Love!"
(Koi no kokyū, Roku no kata: Neko Ashi Koi Kaze)
Mitsuri twirls upside-down and creates multiple extending slashing attacks, these were blocked by Y/n's scythe but he got hit at the side of his face.
"Now I'm mad! I'm not holding back anymore! You may be our Tsuguko, but insulting the woman who raised you is unforgivable!" Mitsuri shouted.
"Looks like we might have to discipline ya brat!" Sanemi cracked his knuckles.
The woman, who is the embodiment of Y/n's Quirk laughed as Y/n continues his battle against the Hashiras.
"Would you look at that! Everything is perfectly going in my way! I guess those years when Y/n-kun kept rejecting me is nothing. I'm going to rule this world." She turn her attention back to Tanjiro's group.
"Now, I wonder which of you will be the first to fall apart!"
Inosuke glared at the woman, "Dammit! We gotta take care of this! Or this woman will take away my underling!"
"Her neck is very sturdy! Our normal nichirin blades won't cut through!" Tanjiro said as he ran towards the woman, and his nichirin blade turn into bright red. "But..! Bright Red Nichirin Blade will!"
Tanjiro and the woman clashed their blades.
"What?!" The woman was shocked when Tanjiro's red blade begins to cut through her weapon.
"It cut through!"
Nezuko begins to run to Kanao, Genya, Zenitsu and Inosuke, using her blood demon art to turn their nichirin blades into red.
"Our blades?!" Kanao said.
"It's turning into red!" Genya added.
"Nezuko-chan! You're amazing!" Zenitsu yelled.
"All right! Now let's get into it!" Reinvigorated, Inosuke dashed forward and deflects the woman's attack.
"We'll have to slice her neck together, multiple directions! The six of us together... can beat her!" Inosuke declared.
Tanjiro and the others acknowledges the plan. "Nezuko! Try to distract her while we get close to her!"
"Hmmm!" Nezuko nodded.
"Tsk! Even if your blade is red, it's not going to be enough to kill me!" The woman denies that they red nichirin blade would mean they could beat her.
She launches even more chains towards the slayers, sending them back while deflecting the chains.
(Author: Just imagine Kanao and Genya are with them)
"Graaaaagh!!!" Nezuko growled, gaining the woman's attention.
Both ladies charge each other for brutal close combat.
The woman stabs Nezuko but this time she moves a lot faster and more resisted to pain than ever before forcing the woman to fight with bare hands.
The Fight went bloodier as the young demon slayers circled around them.
'I have to get rid of that massive weapon of hers.' Genya aimed his at the woman's arm, waiting the right time where he could rip off her arm with a single shot.
As the fight continues, the woman manages to control her fight against Nezuko, and try to take advantage of an opening.
"Got you now!" Genya fires his gun that shears off the woman's right arm,
This causes her to miss her attack and sending her skidding across the ground.
"Nice work Genya!" Tanjiro complimented. "This is our chance now!"
As the woman stands up, Nezuko grabs her and slams into the pillar for a painful beatdown. The woman her hand to consume her flesh. Nezuko kicked her with enough force to separate her hand from woman's mouth.
The result was Nezuko lost her left hand and the woman flew a small distance from her. She puke all over her blood due to the pain in her stomach. She sees the young demon girl pull her right hand.
Nezuko's hand began to glow.
"Blood Demon Art: BLOOD BURST!!!"
(Kekkijutsu: Bakketsu!)
Nezuko closes her hand and the devil woman lets out a painful scream as the fire consumes her body quick enough to burn out her skin.
"Aaaarggghhhhh!!! Y/n-sama!! Y/n-samaa!!!"
Hearing her calling his name, Y/n quickly turn his head at them. With him being distracted, the Hashiras used this opportunity to restrained him.
While the woman is roasted alive, Tanjiro and his group closes their distance and prepared their Breathing techniques.
Genya swings his red nichirin blade at the woman's neck along with Tanjiro, Kanao, Inosuke and Zenitsu.
"Beast Breathing, Third Fang: Devour!"
(Kedamono no kokyū, San no kiba: Kuizaki)
"Thunder Breathing, First Form: Thunderclap and Flash!"
(Kaminari no kokyū, Ichi no kata: Hekireki Issen)
"Flower Breathing, Fourth Form: Crimson Hanagoromo!"
(Hana no kokyū, Shi no kata: Beni Hanagoromo)
"Dance of the Fire God, Dragon Sun Halo Head Dance!!!"
(Hinokami Kagura, Nichiun no Ryū Kaburimai)
The devil woman gasped seeing them about to decapitate her.
"Y/n-sama! They're about to cut my head off! Do someth-"
A slashing sound is heard, Y/n suddenly frozed in place and stare in disbelief, the Hashiras turn towards Tanjiro's group
and the woman's head falls to the ground.
"Waahhh! They did it! They beheaded her!" Mitsuri rejoiced.
"They did it flamboyantly!" Tengen grinned.
"Oraaghh! How do you like that ugly lady!" Inosuke makes fun of the headless woman.
"Is it over?" Giyuu glances at Y/n, stop dead in place. Shinobu cupped his face with her hands.
"Y/n?"
"Y/n, speak to us? She's gone. Nothing is controlling you." Kyojuro said in a soft tone.
"Heh... HAHAHAHAHAHA!!" A menancing laugh startles everyone and they quickly look at the woman's head. "I cannot lose.. No matter what the circumstances, I will prevail!"
Her head and body floated before it twists and formed into spikes that has red veins. After that, it propels itself directly at Y/n.
"Everyone! Don't let those spikes reach Y/n!" Tanjiro yelled.
"Dammit!" Shinobu hugged tightly the younger Tomioka while Giyuu takes front.
"That bitch!" Sanemi tries to cut the spikes but it avoids it.
"Wah! It dodges us!" Mitsuri shouted when it avoided her. Gyomei took down one of it.
"She's really targetting Y/n!" Obanai shouted.
Giyuu became enraged, his veins are showing on his forehead. "LEAVE MY DESCENDANT ALONE!"
"Water Breathing, Eleventh Form: Dead Calm!!!"
(Mizu no kokyū, Jū Ichi no kata: Nagi)
Kyojuro and Muichiro joins beside Giyuu to defend as well.
"Flame Breathing, Fourth Form: Blooming Flame Undulation!!!"
(Honō no kokyū, Shi no kata: Sei En no Uneri)
"Mist Breathing, Fourth Form: Shifting Flow Slash!!!"
(Kasumi no kokyū, Shi no kata: Iryūgiri)
The spikes increases its speed, and went past the three Hashiras.
"Nooo!!"
"Y/n! You have to get away!" Shinobu pushes him and attempts to stop the incoming attack.
Y/n slowly glances back, seeing the spikes went past Shinobu as well,
Spikes penetrates him from the back and f/c) light glows from him. Crimson blood spreading across. The Demon slayers could only watch in horror at Y/n's condition.
"It.. Hurts..!" Y/n cried out.
"Y/n don't lose! Will yourself out of there!" Tanjiro shouted.
"Shut up! I'm gonna kill you!" Y/n yelled at him. He dropped all four on the ground and screamed in agony. His eyes becoming fully black with only small (e/c) pupils.
Giyuu and the others never back down, determined to get Y/n back. "Fight it back Y/n! You can't let your own Quirk corrupt you!"
"Go away..!!"
"You're an young hero! A swordsman!" Kyojuro shouted. "Who wanted to protect the people you care for!"
"..Disappear!!.."
"Tomioka Y/n!!"
"I HATE YOU!!!!"
(Omae ga kirai da)
After an explosion, the swordsmen were startled by the sudden change in the area and looks at Y/n, half transformed, to Giyuu's sheer horror and horrifying the rest of the demon slayers.
"By the looks of it, it seems that words are no longer sufficient." Sanemi said.
"I agree with you." Tengen said.
Y/n turn around and look at his enemies. Both ready their weapons and Sanemi was the first to lunge at Y/n.
"Wind Breathing, First Form: Dust Whirlwind Cutter!"
(Kaze no kokyū, Ichi no kata: Jin Senpū - Sogi)
Sanemi dashes forward and cuts Y/n's right arm. Y/n remained unfazed and looks down at Sanemi.
"Sanemi! Get back!" Gyomei warned and Sanemi retreated.
Y/n simply regenerate his injured limb, face now displaying his stern and more familiar expression, perpetual frowning.
"Blood Demon Art: Tempest of Blood Spear!"
The hardened Blood spikes appears and begins firing rapidly while in mid-air.
"He's capable of creating his own Blood demon art?!" Tengen exclaimed as he used his Breath of Sound to deflect the attack, and Gyomei did the same.
All the remaining Hashira and Tanjiro's group use their respective Breathing Techniques in order to counterattack Y/n down.
"Mist Breathing, Fourth Form.."
(Kasumi no kokyū, Shi no kata)
"Insect Breathing, Butterfly Dance.."
(Mushi no kokyū, Chō no mai)
"Serpent Breathing, First Form.."
(Hebi no kokyū, Ichi no kata)
"Love Breathing, Fifth Form.."
(Koi no kokyū, Go no kata)
"Water Breathing, Third Form.."
(Mizu no Kokyū, San no kata)
"Wind Breathing, Seventh Form.."
(Kaze no Kokyū, Shichi no kata)
"Flame Breathing, Ninth Form.."
(Hono no kokyū, Ku no kata)
"Beast Breathing, Second fang..!"
(Kedamono no kokyū, ni no kiba)
"Flower Breathing, Sixth Form.."
(Hana no kokyū, Roku no kata)
"Thunder Breathing, First Form..!"
(Kaminari no kokyū, Ichi no kata)
Dance of the Fire God, Sunflower Thrust!"
(Hinokami Kagura, Yōkatotsu)
All the Demon Slayers, inside of Y/n's consciousness, converge on the new Demon lord. But instead of being concerned, Y/n gives off a disturbing smile.
Y/n moved at such alarming speeds that they couldn't even react to him at all,
'He disappeared?!' Giyuu thought.
Once Y/n stopped moving, and positioned himself ideally, he struck Mitsuri with his scythe, this launches Mitsuri flying towards the wall.
"Kanroji!" Obanai yelled.
"Please just don't worry about me!" Mitsuri cries out. Y/n was in front of her and prepares to strike her down.
Just as Mitsuri was about to get hit, a sudden impact destroys Y/n's scythe blade, saving Mitsuri. It turns out to be Gyomei.
"Purgatory!!!"
(Rengoku)
Y/n saw Kyojuro's powerful titanic flaming dragon, Kyojuro stabbed Y/n hurtling both of them down the area, destroying everything in its way.
The scythe regenerated like how Kokushibou regenerate his blade, and brought his scythe forward onto Kyojuro.
The Flame Hashira flew far back due to the blow of the scythe, and he eventually ended up hitting the wall.
Mitsuri somersaults backwards through the air creating a long whip-like string of attacks. Y/n looks at her as they slide down the massive chains.
"Your skill is admirable..." Y/n separate his scythe into links to form a deadly chain-scythe, he uses it to catch Mitsuri by her arm and throw her into a pillar and drag her down. "But ultimately not enough."
Shinobu then prepares to strike at Y/n again, she dashes at full speed, running a zigzag pattern. She stabbed Y/n's neck and sending him flying towards the pillar.
"Your exceptional speed is indeed effective but you lack an attack that could actually stop me." Y/n said.
The Insect Hashira suddenly cough blood and glances down, she saw Y/n's claws stabbed through her chest.
"No..! Kocho!" Giyuu shouted.
"Nee-san!" Kanao rushes towards them.
Y/n throws a blood spike at Giyuu and Kanao , who simply dodges the attack. Y/n tries yet again, but the two demon slayers continues to dodge each attempt, just for them to eventually slice the spear, causing it to disintegrate.
Pulling his claw hand out of Shinobu's chest and kicks her away. Giyuu went to Shinobu while Kanao continue to charge and slices Y/n but the latter parried it.
"Kocho, don't move anymore." Giyuu said.
"I'm alright Tomioka-san." Shinobu looks at Y/n fighting Kanao and Inosuke. "I can still fight.."
Before Giyuu and Shinobu return to the battle, something caught their attention. "Wait. Is this.." Shinobu muttered. They saw a shattered pieces of Y/n's spiritual core, and one of it is glowing.
Shinobu picked the glowing one, it's showing an image of a young man with with light blue, wavy hair and Y/n's little arms was reaching for him.
"Isn't that.. a friend of Y/n's teacher?" Giyuu asked.
'You're gonna be amazing when you grow up little one!'
Y/n gets a sudden flashback of Shirakumo, when he was a baby. He snapped out of the memory before focusing on battle. Using his scythe to throw Kanao away from him and roundhouse kick Inosuke.
Giyuu saw how it affected Y/n. 'He's still there.' He turn to Shinobu and said. "Kocho, just stay here. You can't fight anymore."
"Oh come on. I was hoping for something at least a little more competitive in this fight." Y/n spoke up.
Obanai and Muichiro quickly runs behind Y/n and slices his back with red nichirin blade. Y/n quickly backs away and touches his back and looks at the blood on his back.
"I gotta admit, that red nichirin blades hurt a bit." Y/n tells them as he teleports behind them, "Break!" using his scythe to launch them a distance. Though Obanai was to parried his scythe.
Genya nevertheless raised his gun and fired at Y/n. The latter moved rapidly around the area to avoid the bullets, leaving afterimages as he did, hurling blood spears at Genya to pin his arm to the wall, then did the same to the other one.
"A human that eats demon to gain their Blood Demon Art." Y/n chuckled and leapt into the air, dodging an axe that was coming towards him.
Gyomei swings and throws his axe and flail at Y/n who continues to dodge each of the attacks, except for one in the middle which slices him on the cheek, resulting in blood.
"Wow, you actually got me, old man. I'm impressed. However, given our current situation, I think we could maybe make our game fight a little more fun." Y/n says.
"I hate your descendant's attitude Tomioka!" Sanemi says, still trying to attack Y/n.
Y/n then overwhelms Sanemi as he summons more slashes which knocks him back along with decimating the surrounding landscape.
Sanemi was heavily wounded with his torso having immense wounds.
Seeing a comrade heavily injured, Tengen leaps in between Y/n and Sanemi. Clashing weapons with each other.
Tanjiro and Zenitsu were both prepared, reeling one leg back. Tanjiro uses Waltzing Flash and Zenitsu with Godspeed.
Both quickly blast towards Tengen and Y/n in an instant, the three of them swings their blade trying to behead Y/n.
"Tch. How careless of you humans."
Y/n's Tempest of Blood Spear has impaled the demon slayers and he took this chance, twirling his scythe, slashes the demon slayers.
Tanjiro remain steadfast, rushing back which Y/n reacted and dodged. Nezuko came rushing from behind, and tries to ignite Y/n with her flames.
"It's time for your fall, humans." Y/n said unamused.
Y/n simply blasts through the demon slayers as slashes them with no hesitation.
Afterwards, he watched as they all dropped on their knees, clutching on their wounds.
"Give up. It's obvious that you had no chance against me. I hate you all." Y/n uses his Blood Spear to impale their arms on the ground, making them unable to move. "Now then, the only ones left is.."
"Y/n!" The said name turn to face his ancestor. "Do you remember the day you smiled?"
Y/n ignored him and rush his way to Giyuu who continue to speak. "The day where you and your friends had so much fun at your School Festival! Eri-chan was smiling because of your performance!"
Another piece of the spiritual core glowed and Y/n stops with his scythe right over Giyuu's head.
A reaction is triggered and suddenly Y/n is swatted away by an unseen force and pinned to a bunch of chains.
"What.. What is happening?!" Y/n asked and he sees a ripple, showing an image of him performing musical band with his friends then a little girl smiling.
'This... THIS ISN'T MINE!!!'
After the short flashback, Y/n screams in rage, smashes free from the chains and attacked Giyuu again.
"Those are your memories, Y/n!" Giyuu shouted, receiving no further reaction to the pleas of him. "Wake up!"
Y/n jettisons the blade to the side where he would have killed Giyuu. It comes to pass that the reason for this was that he was pushed aside by someone.
The assailant swings their blade that sends Y/n flying into a pillar.
The young demon quickly recovers and charges at his assailant, but the latter had already landed a slash on Y/n with solar flames and went pass him.
Y/n's eyes grew in shock, seeing his arm drop to the side, his blood splashing back across his face.
Tanjiro and the others looked in shock and joy at the person. "It's him.."
After regenerating his wounds, Y/n turn around and face his assailant who was wearing the same hanafuda earrings. "Who in the world-" Y/n looks down at his right arm having purple spots.
"Child. You knew you'd lose against your own Quirk. My brother and I will take care of this."
---
Author: The man Muzan feared has made his appearance!
Next Chapters: vs Sun/Moon!