It's a sin

[gaymuraki]

Disclaimer: I do not own Kuroshitsuji.

Warning: Mature content, violence, blood and Yaoi (males touching males)

Pairing: Claude and Sebastian

Rating: M

Notes: This would take place after ep 10 so this fic contains spoilers for those who haven't seen ep 8-10. I really tried to keep them IC and not stray too far from the actual anime. This is my first Kuroshitsuji fic and I tried my best to write something that was true to the storyline.

Summary: Claude and Sebastian battle for Ciel however, this night their own personal pride is at stake. Someone has to submit and someone has to conquer.



It's a Sin

"Your sticky web around my Bocchan must be cut away. I'll make sure of that." Sebastian had surprised the demon during the attack and caught him from behind. His arm around Claude's neck and other hand pulling his hair, almost ripping it out.

"You are his enemy now, have you forgotten? You aren't even allowed to be seen by him. Direct orders from master Ciel. Also, I would like for you not to refer to myBocchan as yours."

Sebastian's jaw clenched and his hand tightened in Claude's hair, this time pulling out some strands. If it was painful, Claude didn't show it.

They were standing in the massive garden of the Trancy estate. Just a couple of meters from them was Ciel, lying in bed asleep. Only during night time did Sebastian dare to approach Claude as not to be seen by his master. Because Claude was right, Ciel had ordered him to stay away. And a butler's gravest sin was to disobey an order.

"He is mine!" Sebastian hissed in his ear. A sinister black energy rolling off him like a current.

Claude smirked. "Bocchanmade his choice." The sickeningly sweet tone he applied to the title was of course intentional, knowing full well how it annoyed the butler currently holding his body hostage. Sebastian contemplated to simply snap his neck then and there. However, he knew that it wouldn't give him the desired death of that particular demon. Yet it promised him some release of anger and frustration. A very pleasant idea indeed.

"Not fully. Our contract is still valid. Every limb, every inch of hair, every breath of his… Belongs to me." He released his hold on Claude. Still standing behind him, he opted instead to punch the other in the spine which Claude succeeded to avoid by dodging and jumping, landing a few meters away from Sebastian.

"Not for long. I've managed to turn him against you. I'll manage to make him break your contract and sign a new one with me."

"He won't sign a contract with a second-class demon like you whom I will cripple before dawn comes." Sebastian's eyes gleamed red and his lips curved in to a smile.

"Second-class? Is that why I was able to steal your master?" The Trancy butler inquired with a raised eyebrow. Ciel had complained about him not being as graceful as Sebastian at one point and it had irritated him but it didn't matter. His goal was too close for him to be thrown off by such words.

"Second-class because you had to steal someone's master and killed your own. You're like an alley cat that steals a mouse that another cat had caught." The smile curving Sebastian's lips grew. Unlike most humans, and demons, he smiled when he was angry as well.

"The Spider outwitted the Dog. That is all." Claude replied and launched after the other butler.

They connected and broke apart. Kicked and punched. Knives shot through the air from every direction. The spring night air became hot like lava around them from their activity and demonic force. It was a wonder that no one was alarmed by this scene. No one heard them and woke up from their slumber. No other demonic entity interfered. It was just these two men. Butlers. Demons. And their pride. The battling area increased in size as they headed further from the mansion and in to the thick foliage that surrounded the Trancy estate. On the very top of the trees, balancing on thin branches, their eyes met. The battle stopped for a moment and there was a sense of charged calm between them. Their clothes wore marks from their battle and the usually pristine look of these two men was spoiled.

Claude was the one to break the silence. "I seem to still be in one piece. Didn't you say that you would cripple me?"

"Ah but the night is still young. There is still plenty of time for me to break your bones." Sebastian's trademark smile was back in its place.

"I wish that I could say the same although that would go against my master's wishes of having his revenge against you. And you know how he prefers to carry out his revenge by his own hands…"

The smile on Sebastian's lips became strained and he didn't reply. He jumped down into the tree crown, leaving a soft rustling behind, before jumping from his tree to Claude's, heading up where a quizzical Claude was still standing at the top. He burst through the leaves and aimed a stone shattering blow to the other butler's head which connected and sent Claude flying straight to the ground. He landed hard and rolled until finally stopping, spread out on the grass.

Sebastian used that moment of Claude's immobility and landed himself on top of the other butler. His fists grabbed Claude's shirt and he received an amused look in return. Claude's glasses were lying in the dirt, broken. Claude's own hands found Sebastian's ribs. His fingers dug in and his hands pressed hard, aiming to hurt. For that, Sebastian raised one of his hands and slapped the Trancy butler with the back of it, leaving a mark of his own on his cheek. The other hand tore apart his shirt before Sebastian leaned down and bit his shoulder harshly, drawing blood. Claude gasped. If it was from pain or out of sheer surprise, he couldn't tell.

A demon's blood tasted a world apart from a human's. If a human master's blood tasted sweet, addictive, beautiful and pure then a demon's blood was like fire, spices and sin. Demons weren't supposed to drink each other's blood since they preferred the opposite taste. Yet even a demon didn't shy away from licking up sin once in a while. After all, it was in the name of easing that boredom that came from living for so long.

Sebastian bit down again, this time on Claude's collarbone, leaving big red bite marks on his body. Claude responded by ripping open the other's vest and shirt, sending buttons to fly in all directions. He proceeded to grab Sebastian's hair and pulled him away then aimed for his throat with his own teeth. This time it was Sebastian that gasped. Claude bit down, the blood flowing down Sebastian's neck and chest. He lapped it up with his warm tongue. Sebastian retaliated by ripping apart the other's vest and jacket completely, leaving Claude's upper body bare save for his gloves. It was a fine build body but covered in many bruises and cuts from their battle. The sight of these wounds delighted Sebastian. He decided to add some more when Claude licked his blood by removing his gloves and rake his black nails down the butler's back. Claude let out a muffled sound, his lips pressed to Sebastian's skin.

Sebastian grabbed his hair tightly, once again this evening, and pulled him away from his chest so he could attack Claude's lips with his own. He lowered him back to the ground completely, using his weight to keep him down. The kiss was bloody from their earlier bites and brutal, both fighting to dominate. Both tongues tried to plunge in the deepest. Claude tried to get up and roll them over but Sebastian wouldn't let him. The kiss ended when they needed to catch their breath. Fighting hadn't tired them out as much as this. The eyes of the demonic butlers were bright red, the pupils contracted like that of a feline.

Claude tried to roll them over again. The effort became fruitless due to Sebastian squeezing his side and pushing down on his shoulder with the other hand. So he leaned up a bit and caught the butler's lower lip between his teeth. Sebastian, not wanting his lip reduced to a bloody mess, pushed his lips against Claude's and turned it in to a new kiss. That was what Claude had wanted and took advantage of Sebastian's tongue that pushed in to his mouth. He bit that tongue which caught Sebastian of guard and Claude utilized that momentum to successfully roll them over.

The second kiss ended. A trickle of blood adorned the corner of Sebastian's mouth. Claude licked his lips contently and looked down on Sebastian, now under him. "You are on Trancy territory so I'll be the in charge, Sebastian Michaelis."

Sebastian used his thumb to wipe away the blood from his chin. "In charge of what? I promised you I would break your bones and I was simply trying to fulfil my promise." His lips curved and his eyes shone.

"Interesting way of breaking someone's bones…" Claude's eyes revealed his doubts.

"I like to toy with my prey before ripping them apart."

"What a strange Dog you are."

"So it may be but it doesn't change the fact that the Spider will be caught and disposed off."

"Not if the Spider catches you in its web first."

Claude trapped Sebastian's left hand with his right, pinning it above the other's head, then leaned down to nuzzle on his neck while his free hand tugged open Sebastian's trousers. Surprisingly enough, Sebastian didn't try to stop him. Claude licked the other's neck clean from the remaining blood that had leaked out from the wound he had opened, his breath and tongue warm and inviting. If Sebastian had cared to acknowledge that particular feeling that is. He wasn't some human woman being seduced by that demon. Not that he was incapable of feeling pleasure in this form only, this encounter held a different meaning for the two butlers. Just another type of entertainment but also a way to claim what was theirs. Crowning the dark king and crushing the other pawns.

Claude used his teeth again to open up a new wound, his hand tearing off Sebastian's trousers and leaving him only in his white shirt with no buttons.

"So disrespectful of other's clothing…" Sebastian clicked his tongue in distaste.

Claude chuckled in Sebastian's ear. "Is that really what's bothering you the most this moment?" The demon grabbed Sebastian's hip and positioned himself between the man's legs. Sebastian was hard. So was he.

"You are being wonderfully obedient now, like a good Dog. I'll give you a reward…"

The demon stopped licking Sebastian's neck and removed his glove. Claude put two fingers in his mouth and sucked on them, ending with a long thorough lick displaying his tongue to Sebastian. The other butler eyed him calmly. Those fingers began to prod him between his legs and slid in. Sebastian suppressed a grunt from the invasion.

"Now now, I did reward you by slicking them…" Claude looked down on Sebastian and smiled. It looked twisted and his amusement was clear.

"I suppose I should thank you then." The demon replied and grabbed hold of Claude's shoulder with his free hand, the other still over his head. He pulled the Trancy butler closer and licked his jaw. His hand now found the other's chest and raked his nails down it and over a nipple that made Claude shiver. Sebastian found that nipple again and toyed with it, tugging and stroking. The fingers rubbed the inside of him, curling now and then. He would be lying if he said that he wasn't enjoying this, or rather, his human body did. Had it been a more interesting someonefingering him instead of that demon, maybe he would have enjoyed himself more... Nevertheless, the game continued.

Claude's chest and back were now decorated with angry, red scratch marks. Such a pretty contrast against his pale skin. He removed his fingers from Sebastian and used that hand to unzip his trousers, pulling out his erection.

Like so many things when it came to demonic butlers, their human forms were as close to perfection as one could come. It was all to lure in humans by tempting them with their beauty and skills. Therefore Claude's body, and Sebastian's, was just that. Tempting, desirable and beautiful. Strong masculine shoulders, long legs, a broad chest, a round and firm behind, soft hands with diligent fingers and of course… that which truly made them a man. Promising pleasure beyond life and death. Even with bruises and bloody wounds covering their bodies, these men were a sight to behold as they lay naked and entwined in the grass under the stars.

Sebastian looked down on the presented erection and knew what awaited. Again, Claude was by Sebastian's ear. His breath hot and breathing exited.

"I know that you are planning something. A demon like you to simply lay there and wait for another demon to penetrate him is unheard of. Unless you, Sebastian Michaelis, are a great pervert."

Sebastian smiled. "Go ahead and find out if you dare."

Sure enough, Claude pushed it in with a gasp. Like he was surprised that he was able to go that far without his head being separated from his body. Sebastian bit his lip to prevent any sound leaking out. Claude laughed to himself, victoriously. An absurd situation indeed yet oh how thrilling! He let go of the other butler's hand and grabbed his hips with a pressure that certainly would leave dark bruises. He started to thrust slowly, almost uncertain, until his pace picked up and Sebastian's legs were pressing against his shoulders. Sebastian let out short but quick breaths. Repulsive really, how he actually enjoyed this. His hands gripped Claude's upper arms. He could have so easily crushed the bones under his fingers if he wanted to.

"Ah… You are so tight and hot inside… You should take pride that you are probably the best f*ck I've so far experienced." Claude whispered lewdly in Sebastian's ear.

" … Who here… is the pervert? And a vulgar one at that…" Sebastian breathed out but had to compose himself and grit his teeth when the other butler changed his angle so a moan wouldn't escape his lips. He indulged himself. As simple as that. If one is capable of feeling ecstacy why would one deny himself it? Yet he refused to give Claude the satisfaction of hearing his voice of pleasure.

"Don't hold back... Let me hear how much you enjoy having me so deep inside of you…"

Sebastian responded by clawing at his back and Claude moaned.

"I prefer to hear you."

Claude laughed huskily, licking his dry lips. "Talk to me then. Do you want me to touch you? I doubt you will finish by me-oh…pounding in to you."

"You are right… I won't finish with you inside of me." Sebastian's soft lips curved once again.

The other demon licked his earlobe and nibbled it while still moving. His lips copied Sebastian's wry smile. "Why won't you be a little humble and admit defeat?... I have conquered you, just like I won over master Ciel. Once again Sebastian…aah...mm...… it looks like I'm the one on top…"

Claude suddenly found himself flipped over, his bare back on the cold grass and Sebastian with gleaming red eyes hovering over him. His arms were securely pinned to the ground, legs spread and the sense of loss hit him.

"Conquered? Such a big word for a vermin." Sebastian whispered yet there was an edge to those words despite them being said so softly. "It seems to me like you don't even fully understand the meaning of that word. Let me demonstrate and teach you what it truly signifies."

Claude didn't have the time to reply or react as his trousers were unceremoniously pulled off. His body was turned yet again and arms held behind his back in a tight grip. Bound. Somewhere Sebastian had found something to bind him with. The demon dragged him up to his knees, Claude's face pressed in to the grass. He felt Sebastian drape across his back and position himself behind him. Without a word or a warning, Sebastian entered the other harshly, going in fully at once without preparation. Claude hissed and Sebastian bit down on his neck, drawing blood and began sucking at the wound while riding Claude hard and fast.

Sebastian liked to give into pleasure now and then, however, nearly nothing satisfied him like reducing another male to a moaning, whimpering mess. True conquering meant not only forcing someone to submit but also making them give in willingly. His hands ventured to the other's inner thighs where he dug in his nails, leaving bloody crescent shaped marks. When the demon was done marking him, his hands started to fondle Claude's rock hard erection. The other demon didn't seem to mind being taken after all. Unlike Sebastian who only let out an occasional grunt or sigh of pleasure, Claude was much more vocal.

"What's this, weren't you bragging about how you conquered me?... Mm...It looks like you are rather content being taken…" Sebastian's lips were dyed red from Claude's blood, it made the smirk that appeared on them look menacing. Claude tried to form coherent words but all that came out were obscene groans and breathy moans. His muscles flexed and tensed from the rocking caused by the other man. He tried to brace himself and find some way to free his hands but failed. The air cooled his sores and made them sting.

"I…still won…. He…. Is with…me…" Claude gasped and breathed out. Sebastian didn't stop for one second to thrust violently in to the other whose body shook from the impact. His hands kept groping Claude's member feeling the pre-come drip between his fingers. When he felt that, he stopped his movements and hands, gripping the erectiont tighter to prevent Claude from climaxing.

"Hah…L-let go!..." Claude protested. He had been so close.

"Beg me to make you finish… to untie your hands. You might be surprised at how merciful I can be Claude Faustus…." Sebastian himself was nearing his limit. Claude surrounded him so tightly. Sinning with a fellow demon was truly heavenly.

The Trancy butler swallowed again and again, not sure if he should give in. Realistically, there wasn't much he could do in this position. Not with his hands tied. "Untie me…"

"That sounds like a command, not a plea… Surely you understand the difference...aah….butler?" Sebastian licked his lips again.

Claude grunted. The throbbing between his legs was becoming painful. What a disgrace to ask a demon for mercy. Yet there was still the chance of turning the tables on that despicable Sebastian. He was forced to compromise...

"U-untie me… please…" He whispered but it was still loud enough for Sebastian to hear.

Sebastian's smile became savage. At this point, he wasn't a man or a butler. Only a beast with his goal set to destroy his prey. "Good boy. Seems like Spiders can be taught to beg too." He mocked and untied him like he promised. However, Claude was turned to lie on his back before he himself could use his new-found freedom. Sebastian pulled out and intensified his grip on the other's crotch further stopping him from feeling any pleasure. Claude winced and didn't notice Sebastian stroking himself to completion and ejaculating on Claude's face.

A sigh of contentment was heard from Sebastian and a dark chuckle. His eyes were still glowing red and he looked like a man that had just won a battle in all of his naked glory with only the shirt hanging off his forearms like a dishevelled flag around him. The bites from Claude were medals of honour but the true prize lay in front of him. Claude, bloody and dirtied. Refused to reach his peak and forced to beg only to end up humiliated.

Claude laughed. Loudly, almost insanely. He sat up gingerly and wiped his face with his arm. "Sebastian Michaelis… You do not disappoint. But there is still the fact… The breathing, living fact that is currently in the Trancy manor asleep, that I am still one step ahead of you." Despite his display of amusement, the encounter had only fuelled his determination to annihilate Sebastian and consume Ciel.

Sebastian pulled up his shirt and started to button it, only to realize there were no buttons left. "I will conquer and break you as many times as it takes in order to get my Bocchan back before I finally crush you under my foot." He stood up and found his trousers that were ripped in to pieces. Sebastian frowned. How was he to return to the Phantomhive mansion in this state? How unbefitting a butler.

"Assuming he will be still yours by that time." Claude also stood up and tried to brush off the dirt and grass clinging on to him. He found his trousers and put them on. Luckily they hadn't been torn off of him. Claude faced Sebastian and gave a small polite bow filled with irony.

"It has been an interesting evening. I'm sure we will meet again since you are so fond of trespassing."

Sebastian bowed back like a good butler should. "Of course. We will meet again sooner than you think Claude Faustus."

"I'll be looking forwards to pay you back Sebastian Michaelis…"

The end

*

I'd like to just clarify how I picture Sebastian. He isn't a crow to me but a cat, personality wise. That is why you will find many references to cats in the fic like him playing with his pray before ripping it apart. At the same time he is a dog since he is the servant of Phantomhive… Just wanted to clear that up. I really tried to make it a story worth reading and hopefully you enjoyed it. And if you didn't, constructive criticism is welcome too.