The Demon (KNY/Demon Slayer)

27

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Yuki blankly stare at the demon in front of her. Not common demon though. It's Muzan himself, that dude just showed up before her after gained courage or just a pure coincidence that he bumped into her?

"You finally have courage or just accidentally bumped into me?" She ask without showing any expression

Muzan widened his eyes and secretly trying to find a way to escape from Yuki. She reminds him a lot of Yoriichi but demon version. If he compared the Chimei-teki with Yoriichi, maybe Chimei-teki would win because she's a demon and a lot stronger than him.

Yuki mentally sigh and summoned her katana out of nowhere. She just want to finish it quickly without talking much. She despise the man in front of her.

She immediately disappear from Muzan's sights, making herself invisible to the man when she just stand right in front of him now.

"Say goodbye." She whispers as she throw two of her black needles into Muzan's neck

She then unsheathed her katana from its scabbard, she swing the katana in speed, cutting through the king of the demon's hard neck. She knows it would be hard to cut his neck, that's why she use her needles.

The needles will stop his regenerate process and soften the veins in the neck. Just like that she kill Muzan, she tricked Muzan's demon eyes for being invisible.

"Now you know why they said I'm stronger than you?" She ask, finally show herself in front of the king of man eating demons

"Y..you!" Muzan hiss

"Sorry not sorry that you can't regenerate, my poisonous needles prevents demon to completely regenerate. So now all you need to do is just sleep, sleep forever because you've been alive for too long now." She said as she burnt down Muzan's body and then the head with blue flame

She casually left the place, without looking back. She knows it's impossible for Muzan to escape for his own death.

"Why do I feel I go too easy on him? I should have make him suffer more before killing him." Yuki said, mumbling to herself

"Don't you think you just killed my shadow?" Muzan ask, chuckling as he appear in front of her again in piece

Yuki widening her eyes and look at Muzan. Did she killed Muzan's shadow? She mentally sigh and smile softly at the demon in front of her. She's so done with everything

"You got me buddy." She whispers as she bring her hands close to the male's face

She then smile at the male, nodding her head.

"Then.." she mumble as she summons her sun flames

She make sure it's the real Muzan now, not the shadow version of him. She smirk and cast a black circle around him, within seconds the sun flame pouring on Muzan making him groaning and wincing at the pain. She then on full speed cut the man eating demon's neck once again with ease.

"Poisonous sun flame but I think it will kill you even if it's not poisonous, your weakness still the sun after all." She said shrugging

"What a beautiful sight~" Sukuna said, appearing right beside Yuki

Beautiful? Maybe, because both of them just watch Muzan burn to death without breaking any sweats or got any injuries.

"Does that mean all other upper rank would die too later?" Sukuna ask

"Yes, Muzan's curses still in them so they will just die sooner or later." Yuki said, nodding her head

"How about upper rank 1?"

"If he still alive, I have no choice but to fight him on my own."

Sukuna sigh and nods his head. He knows Yuki too well. The girl still feel burden, unless all other man eating demons die, she will feel at ease. At least that's what he hope for.

Killing Muzan is not hard as they all know what is his weakness but he does have shadow, like before. Muzan couldn't even transform into his full demon form because Yuki is too fast for her own good.

Fast like a lighting bolt. Or just become invisible in their eyes. That's her special power. She could kill demon when she's invisible, that usually happens when she doesn't want to waste much time on killing or she just too lazy to fight.

"What happened here?" Giyu ask, startling the two demons

Since when the water hashira is there? They can't even sense his scent or footsteps.

"Muzan, down." Yuki response without bother to look at the water hashira

Giyu widening his eyes and look at the sight in front of him. There's ashes and small amount of flame around. Is that Muzan's ashes? Giyu ask himself in his mind.

"Muzan is dead?" He ask again, only to make sure he heard and sees it right

"Yes." Yuki and Sukuna response in unison

Just how strong Yuki is? To think of it, she's really powerful to the point that make him scare to anger her. Who knows what will happen if Yuki is mad? But it's rarely happen judging on her kind and patient natures.

Giyu blink his eyes for few times and look at Yuki. He feels joy and happiness. At least their biggest enemy already dead. They don't have to think about it anymore. But somehow he could feel Yuki is not really happy. Her eyes still showing emptiness and sadness.

"Nee-chan.." he whispers and step closer to the girl

Yuki look at Giyu and tilt her head, waiting for the younger to speak again.

"You look sad." Giyu comment

Yuki smile softly and shake her head as a no. She don't really feel sad but she only feels tired. Tired of everything but she do this only for Tanjiro and Nezuko.

She would do anything for them both.

"There there, let's go back to Butterfly Mansion. Giyu, are you coming with us?" Sukuna ask

Giyu shake his head and reject the offer. He want Yuki to rest. He doesn't want to bother his 'sister' for now.

"Oh right, should I tell the other hashira and Oyakata-sama?" Giyu ask

"Sure, tell them. They don't have to fight him anymore. I already killed him." Yuki said with a smile and nods her head

Giyu nods his head in response and bid goodbye at them both, leaving Yuki and Sukuna alone there.

"So.. the flame circle..?" Sukuna ask

"I think I should try my new ability?" Yuki ask as she looks at her hands without any expression on her face

"What is it?" Sukuna ask with furrowed eyebrow

"Ice and water." Yuki answer as she melt down the flame circle with only one hand motion

Sukuna become speechless and look at Yuki for explaination. How does she do that? Since when she have ice and water abilities? Usually it's only poison and flame!

"Don't forget that I could steal or borrow others ability too. It's not only you." Yuki said as she shrugs her shoulder

"How?!"

"Giyu. I borrowed his water breathing techniques and combined it with my ice ability. I borrowed it to only melt down the flame circle though because I don't confident about my new ice ability." Yuki said explaining to the older male

Sukuna nods his head at the explaination. Finally understand the situation.

After that, both of them heads back to Butterfly Mansion to rest. Yuki still need to meet all other hashira and Kagaya tomorrow morning.

She may or may have not worrying Tanjiro and Nezuko for her disappearance from Butterfly Mansion. She was just strolling around but accidentally bumped into Muzan Kitbusuji on her way. Nice opportunity to kill the enemy. But a bad luck for Muzan. He die tonight.

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