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Kuroshitsuji: Book of One Shots

Summary:

A collection of short stories involving you and all your favourite Black butler characters.

I sincerely hope you enjoy~

Chapter 1: To Summon a Demon (Ciel x Demon¡Reader)

Chapter Text

Someone. Anyone. Help me!

 

The empty scream was all that was required to wake you from a decade long slumber; it was a common occurrence to slumber on for years after a feeding as you chose to dine only on souls of a superlative quality – and they were quite a rarity.

 

Darkness – your darkness – emerges from the ground like a living, breathing creature, prepared to devour all who are idiotic enough to interfere with the finalization of your summoning. Inky shadows writhe across the blood stained floor and walls, reaching out with grasping fingers and silencing those who cower underneath masks and velvet robes. 

 

Tortured eyes watch from beneath overgrown bangs as blood dances mid-air, porcelain masks shatter, and lives become non-existent. 

 

And then, the creature – you

 

A demon. 

 

His demon.

 

It was a female, from what he could derive in his current state; she was little more than a wisp of a creature with diminutive limbs, though it was terrifyingly clear that bulk was unnecessary, as she seemed many times stronger than her human prey. Bipedal with an elongated muzzle which consisted of inch long teeth, each one serrated like a carving knife. Truly this was a creature conjured from the deepest pits of the Underworld. 

 

Stooped and drenched in blood, you incline your head towards the incarcerated child in a graceful, near elegant manner. There resides a trauma deep within those azure eyes which sends a delightful thrill coursing through your bloodstream – forming a contract isn’t any fun if the signatory shows no fear. 

 

With a predatory grin, you stalk towards the cage. “You have summoned me here.”

 

The child shifts further away to a safer distance.

 

That’s right. Cower you pathetic little brat.

 

“That can never be changed,” you continue, every step, every word, slow and deliberate, “and nothing sacrificed can ever be regained.”

 

You squeeze yourself through the metal bars keeping him contained and claw your away across the ground, eyes dilated and dancing with a maddening hunger. It was an over exaggeration but you were the epitome of fear – it would be an embarrassment to your very reputation were you to suddenly begin playing nice.

 

“Now...choose.”

 

The scent of desperation was absolutely mouth-watering. Surely no one would begrudge you a taste? Just a lick? 

 

Yanking the child forward by the wrist, you relish the sight of fear contorting his features before you drag your tongue up his cheek at an agonisingly slow pace. Oh, yes. Purely delicious. 

 

The child recoils and aggressively wipes the saliva from his skin using his sleeve. “Stop playing games.”  

 

You fight the desire to laugh in his face.  “Oh, feisty, aren’t we?” 

 

It was adorable when these humans attempted to intimidate a demon with false bravado. They seemed convinced that their pathetic excuse for lives were somehow untouchable...but you were more than happy to rectify such arrogant optimism if given the opportunity. 

 

“Demon,” the child begins, expression growing harder, “I want to form a contract with you!”

 

You lick the blood from your claws and smirk. “So you have chosen to stray from the light and traverse the path towards Hell. Very well. I will happily oblige.” Your claws take possession of his face, piercing the flesh enough to draw blood. “Let us engrave the contract on each of our bodies. The more conspicuous the location, the more power you will control. Now where-”

 

“I don’t care where!” He interjects and slaps your hand away. “I just want power strong enough to never lose anyone again!”

 

“Such greed for one of such a small stature.”

 

Perhaps this kid wasn’t as bad as you thought. 

 

“Alright then, we shall use the part in which reflects this entirely hopeless world: that freakishly large eye of yours."

 

A scream is wrenched from the back of his throat as your hand shoots out and collides with his right eye. High-pitched and raw. The type of scream only a young child could conceive. You observe him with great intensity, deriving pleasure from the little boys agony; the eyes wide with horror, mouth rigid and open, chalky face gaunt and immobile, and fists clenched with blanched knuckles and nails biting into the dirtied skin of his palms. 

 

Blood cascades from the freshly branded eye and stains the ground, letting you know the contract had been completed. You relinquish your hold on him and cup his chin. 

 

“Now you have obtained the power of a demon. You shall never have to bow down to anyone ever again.” You rise to your full, intimidating height. “You may be as proud as a King. And as loud as a beast. Release your inner desires and fulfil your wildest dreams.”

 

With a flick of the wrist, the cage imprisoning him collapses, granting him a freedom you doubt he’s had in a very long time. You offer a hand. “Come now, young Master. What is your name?”

 

The trepidation is erased from his features as he accepts your proffered hand and lifts himself to his feet. You tighten your grip on him as he stumbles.

 

“My name...,” he begins slowly, almost hesitant, “is Ciel. Ciel Phantomhive. Next in line for Head of the House of Phantomhive.”

 

“Oh, is that right?” 

 

You couldn’t help but laugh at that. Humans were such an awful bunch of liars – and everyone called you a monster. But his name mattered little anyway. As long as the brat honoured the contract and you were rewarded with his soul, then he could call himself anything he liked.

 

“In that case,” your lips twitch in amusement as a swirl of shadows envelops you, “I must also take a more appropriate form as a servant in one of that position.”

 

The shadows dissipate and a soft sigh falls from the lips of your new human form. You roll your shoulders and neck, loosening the muscles. These human bodies were always such a pain to break in, but with every new contract comes unpleasant requirements.

 

Feeling a tad more relaxed, you place a hand over your heart and bow. “I am at your service, my tiny Lord.”

 

The young child’s reaction....was not what you were expecting. Was your new appearance really so baffling to comprehend? Oh dear, you didn’t accidentally give yourself an additional limb that had no place on a human body, did you? A quick glance reveals the perfect amount of appendages. So what was the problem? 

 

You had to ask, “Is this form not to your liking?”

 

When he hesitates your eyes narrow. 

 

“Does this lack of response stem from the fact that I am a female?”

 

“What? No, I—” 

 

“Because I have heard such bias is considered sexist and quite common amongst humans.”

 

“No!” He shouted, appearing rather flustered by your accusation. “That form is fine.”

 

You eye him suspiciously for a few seconds more before smiling. “Wonderful. Then let us get down to business.” A table and two chairs materialise from a mist of darkness. “We must now discuss the details of the contract.”

 

An undignified ‘huh?’ was the response given.

 

Children. How annoying. 

 

You take him by the shoulders and force him into one of the chairs. “You wished for power strong enough so that you would never lose anyone ever again, and that is fine. However, we must go into more detail with that request.”

 

“More detail?”

 

“No being will ever enter a contract of eternal work with no concrete goal. Trades and deals only work because both sides have something to gain; no one willingly enters a contract from which they only stand to lose from.”

 

Ciel stiffens upon feeling nails dig into his shoulders. You smile at him in a way which could be friendly or threatening. “You understand, yes?”

 

The fear is once again wiped from his face and replaced by indignation. “Don’t touch me."

 

Normally you would have been highly offended by such rudeness – especially from a child of all things – but this time you simply couldn’t be upset no matter how hard you tried. Why? Simply put, it was because he was absolutely adorable. That jutted lower lip mixed with such raw hatred...lovely.

 

This child was every demons dream. 

 

Cupping his cheeks – and ignoring his protests in the process – you lean in close, fighting the urge to take another lick of his porcelain skin. You grin.

 

“We are going to have a lot of fun together, my young lord.”