The Good Demon [KNY]

By Carmelizedunipn

501K 14.1K 5.8K

Akai Suisei was one of the first people Muzan changed. The young boy wanted to grow strong and proud like his... More

Part 1: The Night Everything Changed
Part 2: The Start of a Thousand Year Journey
Part 3: Cut short
Part 4: F@ck, This is Boring
Part 5: Freedom
Part 6: The Demon Slayers
Part 7: Friends or Enemies?
Part 8: Another Life
Part 9: Training
Part 10: The First Hunt (1/2)
Part 11: The First Hunt (2/2)
Part 12: We Aren't
Part 13: Advice from the Flame Pillar
The Red Comet's Bio
Part 14: Mount Natagumo
Part 15: Spider Fight
Part 16: The Boar and Sun
Part 17: Bad Memories
Valentines Day
Part 18: Mental and Physical Pain
Part 19: The Sun Breather
Part 20: Target Practice
Part 21: The Infinity Train
Part 22: What Do I Have to do Again?
Part 23: Strike Back
Part 24: How Do You Fight a Train?
Part 25: Fight Fire With Fire
Part 26: It's Cold
Part 27: Morning Training With an Unlikely Opponent
Part 27.5:
Part 28: Lions and Toys
Part 28.5: Misfortune
Part 29: The Flambouyant Jackass
Part 30: Rest and Preparation
Part 31: Improv and Infiltration
Art: Akai Drinking Angrily
Part 32: Search and Sanitation
Part 33: Attraction and Deception
Bonus Part: Apologies
Part 34: Tied Up
Part 35: Not all There
Update:
Part 36: The Rage of The Sun
Part 37: Rage of The Red Comet
Bonus Part: Roommates
Imma Be Real With You...
Update/new OC?
Part 38: The Siblings (1/3)
Part 39: The Siblings (2/3)
Part 40: The Siblings (3/3)
Part 41: Breakdown
Part 41.5: Good Morning
Part 42: Self Harm
Part 43: Self Improvement
Bonus Part: Life After Dark
Pat 44: End of Training
Part 45: A New Makeover
Imma Just Ask it Now:
Bio of The Twin Comets
Part 46: An Invitation
Part 47: Hanging Out
Part 48: Tokito Muichiro Doesn't Give a Shit
Part 49: Tokito Muichiro Still Doesn't Give a Shit
Part 50: Fighting the Mist Pillar
Part 50.5: The Girl in The Hot spring (14+?)
Part 51: A Revelation
Part 52: A Letter From Your Father
Part 53: Battle With The Multiplying Demon
Part 54: Burning Resolve (1/4)
CLOSED! Halloween Event Voting
Halloween Vote Results: Pretty Dissapointed TBH
Special Part: Halloween Night (Modern AU)
Part 55: Burning Resolve (2/4)
Part 56: Burning Reasolve (3/4)
Part 57: Burning Resolve (4/4)
Part 58: The Coward's Bitter End
Part 59: Everything is Okay
Part 60: One More Mission
Part 61: Clashing Demons
Part 62: The Battle on The Mountain Continues
Voting: Vote For a Lemon
Shinobu X Giyu Lemon
Teaser:
Part 63: Raging Soul
TEASER:
Part 64: Burning Body
TEASER:
I Am Still Alive.
Part 65: The Demonized Slayer
The Art
Part 66: His Return...
Part 67: The Truth
Part 68: Regrouping
Part 69: Warm-Up
Part 70: Tenacity
Part 71: The Festival
Part 72: You Promised, Uncle...
Part 73: Change of Plans
Part 74: Come on, then.
Part 75: Surprises
Part 76: Power
Part 77: Hunger
Part 78: A Promise
Part 79: The Origin (1/2)
Part 80: The Origin (2/2)
Part 80.5: You Never Asked
Akai Suisei: Full Bio
Alternate History: Fear The Red Comet
Part 81: Hamon
Part 81.5: Medicine
Part 82: Poison
Part 83: Whooping
84: Tension
Survey:
Part 85: Heat
Part 87: Steam
Part 88: All I Want
Part 87.5: Squeaky Clean
Part 89: Regrets
Part 90: Warmth
Part 91: Embrace

Part 86: Tantrum

476 10 23
By Carmelizedunipn

Ume sat alone on her bed, reading a book that the kitty cat had supplied her with. It had been ten minutes since the sun went down. She was never one to read, but any alternative was preferable to this boredom. Ume groaned and set the book aside.

"Lefty..." Ume said to the empty room. She flinched when she heard an object collide with the ground outside of her room, which may as well have been a prison cell. Lefty came in, wiping a drop of sweat off of his brow.  "What've you been doing this whole time?" Ume asked him. 

"Training." Lefty wiped some blood off of his knuckles. Ume chose not to dig deeper into that.

"So, what the hell is this place?"

"That's sensitive information." Lefty gave her a brisk answer. 

"Why can't you tell me!" Ume barked.

"I told you I'd answer any questions I could, I can't answer your current questions because I can't." 

"Well, if you're not gonna answer any of my questions, then could you at least make this living situation any better?" 

"How would I do that?" Lefty cocked an eyebrow.

"You could start by getting me better blankets, better sheets, better pillows, a decent book, some tempura, a makeup kit, and a glass of sake!" She listed all of her demands with her fingers. 

"Sake? Aren't you, like, twelve?" Lefty smirked as her face lit up with rage.

"I'm sixteen-and a half you asshole!!! And you said you'd fulfill any and all of my demands!!!" She yelled in her shrill voice. 

Lefty paused, before groaning and leaving the room. Ume waited not 10 seconds before he returned, carrying everything she had demanded.

"Blankets, sheets, pillows, books, tempura, a makeup kit, and I got you some milk tea." Lefty named each item demanded as he laid the items out on a table.

"I asked for sake." She said bitterly.

"That's a shame, you're too small to drink alcohol." Lefty smirked as he heard her infuriated grumbles. 

"You are such a piece of-" 

"So, now that I got every thing you needed, I have work to do." Lefty turned to leave.

"Wait!" She barked at him.

Creaaaak...

Lefty turned his head nearly 180 degrees. 

"You didn't make my bed." She said with her arms crossed.

Creaaaak...

Lefty leaned his forward impossibly far with a look of confusion.

"You don't know how to make a bed?" Lefty's face was a dramatic mix of confusion and disappointment.

"Wha- I- of course, I-" Ume stuttered as an embarrassed blush crept across her face.

"Oh my god, you don't know how to make your own bed!" Lefty broke into a fit of laughter as Ume's entire face turned red.

"OF COURSE I KNOW HOW TO MAKE A BED, YOU ASSHOLE!!!" She cried with tears dotting the corners of her eyes. 

"You don't know how to make your own bed!!!" Lefty laughed teasingly as the waterworks began.

"Shut up, you meanie!!!" Ume cried as tears flowed from her eyes. "I can! I can I can I can!!!" She flailed her arms as she threw a tantrum. "I just wanted you to do it!!! Waaaaah!!!" She closed her tear-filled eyes and wailed to the ceiling, nearly deafening Lefty as he moved to cover his ear.

"Argh! Alright! I'm sorry, I was teasing!" Lefty groaned as the sound rended his eardrums. 

"You're so mean! So mean! You stupid meanie!!!" Ume ran forward and planted ineffective hits into his chest.

"Alright, I'll make your bed, stop cry-"

CRACK!!!

Ume's hand slammed into his jaw, shattering it instantaneously and sending his head crashing into a wall. He healed his jaw and turned to her in shock. She hadn't noticed, eyes still filled with tears and scrunched closed in a grimace of embarrassed fury and childish rage. Her cries grew louder as black veins began to sprout along her arms and neck, and her cries grew even louder. She was turning back into a demon!!!

Lefty wiped the blood off of his chin and went to action. 

"I'msorryI'msorryI'msorry!" Lefty immediately apologized and tried to calm her down. 

"Stupid idiot! Stupid idioooot!!!" Lefty dodged the deceptively powerful slaps, terrified in a way he never had been before. He danced out of her range as she flailed, trying to steer her away from any furniture or walls. After a particularly hard swing, Ume lost her balance.

She fell forward.

Lefty's body moved of its own accord.

He caught her, supporting her with his arms. She responded by coming forward and crying into his chest.

"OH SHIT-"  Was all Lefty's mind could utter as Ume's arms wrapped around him.

"You're such a meanie!!!" Ume wailed in his chest, her grip tightening and unknowingly crushing Lefty's ribs and spine with demonic strength. Lefty let out muffled chokes as blood dripped down his chin. 

After about two minutes of torture, Ume finally calmed down. She pulled away as Lefty healed his wounds without her noticing.

"I'm uh... Sorry. I was just teasing," Lefty feigned a nervous chuckle, in truth absolutely terrified. 

"You better be sorry, you... idiot!" She had simmered down, still visibly angry, but no longer throwing a tantrum. 

"My mistake, Ume." Lefty called her by her name, which seemed to placate her. "I'll make your bed for you." Lefty said. Behind Ume, he could see a terrified Yushiro in cat form slipping more of the antidote into Ume's milk tea. "How about you enjoy some of your food while I do so?"

Ume didn't respond, but sat at the table, sipping her milk tea and eating the tempura as Lefty went to work on her bed. Lefty was relieved to see the black veins shrink away as Ume's glass emptied over the time of her little meal. In about two minutes, he had pristinely refitted Ume's bed, and the signs of her demonic reemergence were gone. Lefty stepped away from the bed and bowed to her.

"Your bed has been fixed, Ume." Lefty said. He noted that she visibly brightened when he said her name. Ume yawned and rubbed her eye. It seemed the tantrum coupled with the antidote taking its effect was making her sleepy.

"I see you're fit to rest. I'll be on my way." Lefty bowed and turned to leave.

"Why do I sound like such a jackass?" Lefty questioned why he was sucking up to this brat.

"Wait..." 

"Uh, yea-" Lefty froze as a gentle pair of arms wrapped around him.

Ume wrapped her arms tightly around him.

"Stay with me..." She whispered.

"OhgodohgodohgodOHGODOHGOD-" Lefty panicked as she guided him to the bed.

"I-I-uh- got stuff to do, so-uh-lemme-j-just, uh, tuck you in..." Lefty broke off from her and lifted the blanket, and Ume complied, slipping into the covers. He handed Ume a fluffy pillow and she took it, hugging it to her chest and closing her eyes. With that, he turned to leave.

"I love you..."

...

...

...

"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!!!"

"Gyutaro..."

...

...

...

"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!!!!!!!!!"

---------

Lefty walked out of room, shivering and clutching his belly.

"What happened?" Giyu asked.

"Shut up." Lefty choked as he speed-walked past the pillars.

"Aw..." Giyu lowered his head, sad.

Once the pillars were out of hearing range, Yushiro in cat form came beside him.

"You okay?" Yushiro asked.

"I'm gonna throw up..." Lefty gagged.

"Ew, then get the hell away from me!" Yushiro increased the space between them.

"Earlier, her veins, her power, what the hell was that?" Lefty hissed.

"The antidote seems to not work completely."

"Oh wow, who told you that? Shit Sherlock, first name No?" Lefty growled.

"Lady Tamayo herself stated that the medicine would be perfected right before Muzan's arrival. It's a miracle we had gotten it to this stage now. As things are going, a steady ingested dosage will keep her human until the true antidote can be synthesized." Yushiro explained.

"Alright. Good." Lefty crossed his arms and Catshiro walked into the shadows, disappearing.

Alone, Lefty let out a shuddering sigh.

"I need a shower..."

---------


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