A/N: Written very quickly on a bad day so…no promises. And slightly higher rating this time.

Go to my deviantART page for the music selections for each theme.

Theme 4: Dark

The fight had only lasted a few minutes. Without realising it, the two had moved closer and closer with each insult they gave. Suddenly, Sebastian grabbed William by the tie, shoving him back against the cold brick wall of the neighbouring building. The sudden warmth of the demon's tongue playing in his mouth stole the fight from the Reaper's body and he twisted his right hand into the fabric of Sebastian's jacket. The butler responded with a playful bite, barely breaking the skin. William twisted away in pain, feeling warm blood running from the corner of his mouth and clawing his fingers against the brick, fighting the urge to lash out. Every instinct, every logical part of his mind told him to fight, to run but standing there, shaking and panting with that creature...that devil pressed against him... Logic didn't exist anymore.

But logic did exist in the bright light of day.

"Pathetic," William snarled through gritted teeth. "Honestly."

The low, flickering light in the washroom stung his eyes and he momentarily wished for a place to lie down. He eventually settled for perching on the edge of the cracked tub and fixing his gaze on the floor. His body still ached and as much as he hated to admit it, he was slightly dizzy. It had been quite a while since he'd done anything like that. Well, to be perfectly honest, he'd never done anything quite like that.

And here, of all places. A falling-down hovel on cheapside where he was a bit skittish to even walk across the floor for fear it would simply collapse. But at least there was no conceivable way he'd be found out. In a neighbourhood like this, the sight of blood was commonplace.

Pulling his suit collar away from his throat revealed dark bruises wrapping almost delicately around his neck. Barely healed scratches and bite marks covered his collarbone and the gash in the back of his hand was only now starting to close.

Another wave of revulsion hit him at the memory of the previous night. Just what the hell had he been thinking?

William had never been given to his emotions. In fact, he made it a point to ignore them whenever possible. But something about Sebastian seemed to drag them out of him – all of the pain and anger he'd spent years bottling up being slowly bled from his body.

The tension between them had been stronger that night, nearly suffocating. Every instinct told William to shrug him off, get away from him before he did something he'd regret. But standing against him, both wrapped in the comforting darkness of the night-shrouded city had made him forget the reason he was outside in the first place. He fought against the wracking shudder brought on by the memory. He could still feel the warmth of the demon's hands against his chilled skin.

That cold personality had always been something he relied on. To have a creature like that touch him was revolting. The very thought that a demon could make him forget himself so easily, call such long-hidden emotion to the surface – melt the ice, so to speak – was simply…sickening.

William shivered at the memory, shrugging out of his jacket and rolling up his sleeves. The cuts were still there, angry red lines criss-crossing pale skin, marking him as nothing but a toy. He almost thought there would be burn marks as well. Sebastian was far and away the only person who could make him feel like that. The all-too-real sensation of the ice melting, every mental hold easily broken, and the demon's touch searing the flesh underneath was enough to bring another wave of nausea.

"But let's face facts, William. You're the only one who poses a threat to me."

It was said so casually. But he remembered the feeling of pain…of fear that hit him then. It was unlike anything he'd felt before.

"Maybe…" he whispered, carefully avoiding looking in the mirror as he adjusted his glasses. It had become more of a nervous habit in the past few days. "I'm the only one who's a threat to you…so you take it upon yourself to break me." Keeping his voice soft, a barely audible whisper, kept him from noticing how it shook.

Being controlled by anyone was never a fun experience for him but being submissive to a creature like that turned his stomach. Being forced…being pressed against the cold brick and held there by someone he truly despised…was a rush. And he hated himself for that.

It really was disgusting. A Reaper like him reduced to…this. Hopelessly addicted to something he knew had the power to kill him. And Sebastian really was like a drug. Something strong enough to make him forget everything he thought he was, pull him down into the darkness…and make him enjoy it.

But he'd go out there. He'd go back to work and be his usual cold self, barking orders to the slackers and always looking just a little bit stressed. And no one would ever suspect it.

It was all a game between them, after all. A very tiring game.

But just because he was tired of the game didn't mean he could stop playing.

A/N: They'd be a horrible couple. Really.