A/N: Oh my word, I can't believe I left you all waiting so long. Since last writing this, I have once again been both flattered and terrified by the response and was then eaten by exams and results, after which I started University...so life has been rather hectic! But finally, here is the last part .I hope this makes up for the wait.

Thank you to everyone who reviewed thus far and to the 45 people who favourited, and the 51 that put this on alert. Cookies for you all.

While writing this, I had three songs on repeat that you might like to give a listen. One was 'The Dark Crow Smiles' from the Kuroshitsuji OST, one was' Red or Black', the Grell and Sebastian song from the Kuroshitsuji musical and the last one was *deep breath* 'Anata no Koe ga Iroaseyou tomo, Meiyaku no Uta ga sono Mune ni Todokimasu you ni', which is Sebastian's character song.

-x-

Despite his own rules about being silent, Sebastian couldn't stop himself from laughing as he watched the reaper struggle. His voice was deep and echoed in the silence of the room.

It had been sickeningly easy to put Grell in this position. All it had taken was a quick pull backwards and roll so that he was sitting astride the redhead and before Grell had had a chance of working out what Sebastian was intending his cheerful red and white striped ribbon had been untied. Pale hands had gripped the surprisingly small wrists and tugged them upwards and just as he opened his mouth to complain, Grell had found his wrists were now bound to the simple headboard.

"Sebastian," he started, voice barely above a whisper, "what are-"

"Quiet," Sebastian hissed, leaning forwards as though he was going to kiss the reaper. Grell shut his eyes and turned his face to the side, once more pulling at his restraints as though wishing to use his hands to push Sebastian away. Clicking his tongue in irritation, Sebastian curled long fingers around Grell's chin and forced the reaper to look forwards. His eyes remained closed.

"Look at me," Sebastian commanded and was surprised when Grell shook his head.

He didn't want to look, didn't want to see Sebastian without the suit and the mask of pleasant servitude. He had wanted to see it before, on the rooftop, when the anger and passion blazing in the demon's eyes had been exciting. Now, he was afraid of what he would see. There was no 'young master' here now. Sebastian had no reason to wear a mask.

Red eyes narrowing, Sebastian lowered his hands and began unbuttoning Grell's shirt with deft fingers. As he brushed against the warm skin of Grell's chest, the redhead squirmed slightly and bit his lip, apparently not wanting to show any sign that he was enjoying the touches. Sebastian smirked and finished with the buttons, pulling the shirt open and dragging one dark fingernail down Grell's skin from his collarbone to his stomach. Despite himself, Grell whimpered. Ducking his head with a smile, Sebastian retraced this line upwards with his tongue, holding on to the redheads hipbones to keep him from squirming. When he reached Grell's neck he nipped the skin.

"Look at me," he repeated, lips hovering over Grell's ear.

"I don't want to," Grell murmured, pulling at his bonds uselessly.

"Of course," Sebastian replied. "Just like you aren't enjoying this. You're pathetic, Grell, stop lying to yourself and look at me."

With the final words, Sebastian's voice changed and cut through Grell's defiance. It sounded as though not one but many voices were speaking in unison, ancient voices spitting blood and smiling all the while. Grell's eyes slammed open in fear and he turned them towards the demon with instinctual obedience. They burned in the darkness, a bright mix of yellow and green. He caught and held Sebastian's gaze, seeing the demon's eyes burned too in the darkness, a dark fiery red. The thin lips below the eyes were smiling.

"Why do you look so surprised?" he asked.

Grell's eyes scanned the body straddling his own, seeing only a vast expanse of pale skin and defined yet slender limbs that belied the strength they possessed. Beneath the uniform, Sebastian seemed like a normal human, other than the contract marked into one hand. Grell wondered why but didn't dare voice the question. Dragging his gaze back to Sebastian's face with difficulty, Grell remained silent.

"What did you expect?" Sebastian asked, having noticed the look. "Something fiendish? Did you expect me to show you that side of me?"

Sebastian reached up and lifted Grell's glasses from his face before tossing them away. They landed on the floorboards with a sharp crack but the demon didn't turn to look. Leaning forward and crushing his lips against Grell's, Sebastian dragged a hand through the long red hair.

"Do you have such a high opinion of yourself?" he murmured against Grell's lips.

Anger blazed suddenly in the reaper's wide eyes and he jerked his head away from Sebastian's. It was too much. Why hadn't he left when he had the chance? How could he have let himself be put in this position? It was humiliating, an emotion far outweighing the excitement he was trying desperately to deny. Forgetting the fear for a moment, Grell leant forward and sank sharp teeth into Sebastian's collarbone. Sebastian's eyes widened and a noise slipped from his lips that was a strange mix of disbelief and approval, far from the anger and pain Grell had wanted to inflict. The reaper waited until he tasted blood and then fell back against the bed, breaths coming in short gasps.

Sebastian's eyes had closed and he touched the wound gently with his fingertips. A few trickles of blood slid down his pale skin. Even as Grell watched, the holes ripped by his teeth began to heal. Slowly, Sebastian opened his eyes. He smiled.

"In that case," he murmured, "Shall we begin?"

As Grell's eyes widened in surprise, Sebastian moved down his body, tracing lines with nails, teeth and tongue. It was all Grell could do to keep quiet, forgetting that he wasn't meant to be enjoying this. As the demon ran the palm of one hand down the material covering the arousal Grell was trying to ignore, the reaper gasped audibly, earning a light chuckle from the demon. He made swift work of the belt and button before pulling Grell's trousers swiftly down his legs and dropping them unceremoniously on the floor. To his amusement, it became evident that the reaper did not go in for undergarments and as he chuckled again, Grell averted his eyes in shame.

Sebastian sat back for a moment and let his eyes roam over the creature before him. It was more than he could have wished for. Grell's cheeks were coloured with a deep blush, his head turned to one side and bloodstained lips slightly parted. Without the glasses, he seemed more vulnerable than before with dark lashes resting against his cheeks. Gaze straying away from his face, Sebastian followed the slender arms that were stretched upward towards the headboard and the fingers that were flexing subconsciously. Eyes now sweeping downwards, Sebastian smiled. Wearing only a shirt that was pushed apart on both sides, Grell looked deliciously sinful, red lines seeming to glow against his pallor where Sebastian had scratched.

He leant forwards once more, lying flush against Grell and echoing the reapers sharp intake of breath as they brushed against one another. He pressed his lips against Grell's instantly, pleased to find that the other man parted his eagerly, no longer playing at resisting. A warm tongue brushed against his own and Sebastian chuckled, the noise being smothered by Grell's mouth. While Grell was distracted, he ran one of his hands back down the length of the reaper's body. Grell didn't register what was happening until one warm finger was pressed against his entrance. His eyes snapped open to see Sebastian smiling like a predator.

A whimper escaped from Grell's lips and his eyes took on an edge of hardness, as though he was about to reclaim his abandoned defiance. Sebastian's eyes narrowed and he began to speak, slowly pushing his finger inwards as he did so.

"You're a disgrace, Grell Sutcliffe," he said as Grell whimpered and squirmed beneath him, breaths coming in short pants. "A disgrace to the creatures that you represent. "

Grell opened his mouth to retort but a gasp swallowed his words as Sebastian pushed another finger into him unceremoniously.

"A disgrace to that superior you seemed to like so much," Sebastian continued.

Grell closed his eyes, William's face flashing before him for an instant. The mere idea of William knowing about this was horrifying; he talked so often of the 'vermin' race of demons. Grell was now inclined to believe him.

Sebastian used his free hand to cup Grell's chin, forcing the reaper to look at him once again and retain eye contact as a third finger was used.

"And you're a disgrace to yourself," he finished, as Grell bit his lip to keep from crying out. "Putting yourself in someone else's power like this."

Sebastian lapsed into silence, the words having rolled off his tongue easily. It seemed that after so long biting back his comments, he could still speak with the voice of a serpent. He wasn't sure whether this was a good or bad thing but at that moment it felt good at least. Yet, he still didn't feel satisfied. Not yet. He positioned himself carefully before smirking at Grell and raising a hand to the wound in his shoulder.

"Both of us can play at the healing game," he said softly before pushing himself inwards.

Grell was unable to hold back a moan of mingled pain and shameful pleasure and was surprised to hear Sebastian's voice along with his own. Grell opened his eyes to see Sebastian motionless, eyes shut. The smugness had dissipated from his features and through the haze obscuring his mind, Grell wondered why. Sebastian himself was trembling. He had forgotten how this felt, forgotten the intense heat that obscured his other senses and sent thrills racing through his every nerve. The heat seemed to spread through his whole body, burning away the dissatisfaction and irritation. It was exactly what he been looking for, one reason why he found being in this form so enjoyable. The pleasure was not necessarily greater than that felt when claiming a soul but was incomparable, a raw feeling that stripped him of all his natural pretences.

Below him, oblivious of the extent to which Sebastian was being affected, Grell became impatient and hooked his feet around the back of Sebastian's legs before pulling him inwards. The demon cried out before he could help himself and his eyes snapped open to meet the green orbs watching him. The fear had gone but had been replaced by the unmistakable darkness of desire. Without smiling or saying a word, Sebastian crashed his lips into Grell's roughly and began to move.

The actions from then on became a tangled blur. Dark nails were raked along pale skin until Grell cried out in pain, hair was pulled and skin was tasted as Sebastian felt himself biting at any area he could reach. His own voice sounded alien to his ears as he echoed the very same noises he had called disgraceful when coming from Grell. The heat blossomed, burning now, and Sebastian cracked his eyes open to see Grell straining against his bonds, mouth hanging slack and neck and shoulders covered in cuts and bite marks. With one hand, Sebastian reached up and tore the striped ribbon, freeing the reaper's hands. Instantly, the hands were running aimlessly through his hair and scratching down his back, at first hesitantly but then with more desperation. Sebastian's skin seemed to burn wherever the fingers touched, unused to such attention, and he found himself increasing the pace of his movements, pressing deeper into Grell with each thrust. He felt himself brush against something and Grell cried out loud enough that Sebastian held a hand over the kiss swollen lips. Biting his own lip so as not to make the same mistake, he redoubled his efforts, causing the reaper to tremble beneath him.

The empty, dark room was full of heat and barely smothered noises as they moved together and little by little, Sebastian could think of and feel nothing but the body below his own and the thrills racing through his nerves. The darkness of his closed eyes became coloured by bursts of white and grey, sometimes red when his eyelids cracked open and he was faced with a cascade of crimson strands. With a cry that was audible even through Sebastian's hand, Grell shuddered violently and the heat increased tenfold as he reached his release. Nails raking down Sebastian's back combined with the intensified sensation caused the trembling in his arms to intensify and after a few almost desperate thrusts, he too found release while murmuring incoherently against his own arm.

Grell opened his eyes and made sure to watch Sebastian in this moment. The difference in appearance from before was startling. The composure which the demon usually wielded like a sword had vanished entirely. His skin was flushed pink, lips a darker colour and his eyes were closed, the lashes resting against cheeks that wore a slight sheen. Usually, Sebastian would seem beautiful but untouchable. Now, Grell saw a creature that was almost unbearably human and yet breathtaking all the same.

The moment seemed to stretch, both slowly becoming aware once again of their breathing and the comparative silence of the mansion. Grell was the first to move, lowering his arms with a small whimper and running a tongue over his painful lips. He knew he was bleeding from several places but was less worried about his own health than he was about staining Sebastian's sheets. He had no idea how the demon was going to act now. Feeling Grell move, Sebastian shook himself and opened his eyes almost wearily, feeling heaviness in every limb. His eyes widened and he drew himself out of Grell, eliciting another whimper from the redhead, before standing at the foot of the bed on shaking legs.

He ran his eyes over Grell's body appraisingly, slightly surprised at the amount of damage he had caused. The reaper was bleeding from a particularly deep bite mark on one shoulder and several scratches along his chest. There were many other marks that were already healing. Grell watched him with bright yet weary eyes. The warmth of the encounter already fading, Sebastian felt an alien sense of shame creeping up on him. Had this really achieved anything after all? He had forgotten his worries and irritations for a while but even now could feel the persistent sense of dissatisfaction returning. Without saying a word, Sebastian turned and walked slowly to his clothes. He tried to dress hurriedly, feeling the strength in his limbs returning as he did so, albeit slowly. After a minute or two, he finished adjusting his tie and turned back to face the bed. Grell had not moved an inch although he now looked nervous.

"I will return in five minutes," he said, voice carefully controlled and void of emotion. "When I return you will have left the mansion and this room will be as though you had never been here. Understood?"

Grell seemed relieved, as though he had been expecting violence rather than cold dismissal. He nodded but still made no attempt to move. Sebastian turned swiftly and headed for the door. One hand on the doorknob, he half turned and spoke in a quiet voice.

"You will tell no one of this," he said. "Once you leave this room, this night will have never happened."

Grell lowered his eyes and sighed.

"Yes, Sebastian."

"Good."

The door was opened and closed quickly, the noise ringing in the silence. For a moment, Sebastian rested against the door, eyes closed. Then, as though dragged forward by some inexorable force, he pushed away from the door and walked through the darkened corridors with confident strides. As he walked, he pulled his gloves out from a pocket and slipped them on.

A few minutes later, he pushed the door to the master bedroom open noiselessly and slipped inside before shutting it behind him. . Light was creeping into the sky and the room was cast in shades of blue and grey. He approached the bed, not smiling as before but with a small frown and tired eyes. Ciel was now lying curled on one side, hands tucked up by his head and hair falling in soft strands across a face that was almost cherubic when not pulled into the mask of indifference it wore during the day. He reached out tentatively, hand hovering just above the boy's hair, wondering why he felt guilty for what he had just done. Surely it was a demon's nature to deceive and act selfishly? Had he been caged so long as to forget that?

One small hand twitched and Ciel's eyes opened slowly, too slowly to see Sebastian pulling his hand away quickly. He stood still and waited.

"Sebastian," Ciel said quietly, his voice heavy with sleep. "What time is it?"

"Near to six in the morning," he guessed, smiling confidently.

"Then why are you here?" Ciel asked, sitting up with ruffled hair. "Has something happened?"

Sebastian shook his head. "No, young master. You can go back to sleep." He saw the window from the corner of his eye and realised he had left it open when pursuing Grell. "I left a window open before," he added. "I apologise for such an oversight."

He crossed the room quickly and reached out for the window but paused as Ciel spoke.

"Why is there blood on your glove?"

He smiled sadly.

"It is nothing for you to worry about," he said in a quiet voice, staring out over the grounds. As he watched, Grell came into view rounding the corner of the house. He was limping slightly and his hair and clothes were ruffled and dishevelled. Sebastian was pleased to see that the reaper did not look back.

"But is it something for you to worry about?" Ciel persisted, his usual demanding tones emerging through the sleepiness.

"Perhaps," Sebastian murmured and turned away from the window. He turned a warm gaze upon the boy in the bed far too large for him and bowed. "Go back to sleep, young master."

As he slipped out of the room and headed back to his own room, Sebastian felt the shame that had been tormenting him fade. Watching Ciel had made him realise something; no matter what irritations were caused by this servitude, nothing pleased him more than serving and protecting this boy, his boy, his soul. Ciel would surely disprove of what his butler had just done but by doing so, Sebastian had been protecting the boy from his own frustrations. He did feel calmer than before.

Grell...did it matter if Grell forgave him?

Sebastian shook his head and set his mind to planning his duties for that day. In the end, Ciel would always come first and foremost. As a man, he forgave himself for giving in to physical temptation. As a demon, he forgave himself for manipulating the reaper. And as a butler, he pushed it all to the back of his mind and set to work.

-x-

A/N Please tell me what you think of this ending! I will be so grateful. If you like this darker Sebastian than you find in usual fanfics, please let me know as I may write some more fics. Also, if you just want me to write more Kuroshitsuji fics,there is a poll on my profile for you to vote in.

Love to you all! Thanks for reading.

Sorryll x