Summary: A series of tales from before Sebastian made the contract with Ciel. When he was still living in hell with Catherine, protecting and teaching her while she loved him… in her own demonic way. Includes dark lullabies, kicking demon ass and spurning the advances of The Great Lord.

'Why don't you try this?' Sebastian asked, looking no older than twelve years old. Before him was a half dead young man. Catherine sniffed at him and frowned.

'Because his soul is pathetic.' She said with a grimace, no pity for the human in front of her. No trace of sympathy. Sebastian cracked a smile.

'I know. That's not what I meant. I only meant for you to eat him.' Sebastian corrected his younger sister. She looked at him with trust in her adorable large eyes. The black flashed away, red taking its place. And her smile had a hint of fangs.

'Alright, brother.' She answered, consuming the man. Once she took a bite, she didn't stop till it was all gone. She kicked up the skull and made faces as it, grinning as she ran outside their home and reformed the skeleton by her magic. The skeleton wrapped its arm around her small waist and took her hand, picking her up off the ground and swinging her around.

Sebastian watched with an amused expression as his sister danced morbidly with the skeleton of the man she had just devoured. Then he frowned. Three demons approached, eyeing the little girl with hungry, curious eyes. 'Do you smell that? It's half a soul… of a witch.'

'Delicious.' Another purred. The skeleton set the little girl down and she looked at them warily. One of the demons lunged at her but she skipped back quickly, hissing her displeasure. Her eyes were a sinister red.

'A demon? Her soul must certainly be most unique. And we'd be rid of an abomination too.' The third agreed, leading as they stalked forward.

'Sister, come to me.' Sebastian beckoned. She ran into his arms but turned around, baring her fangs at the intruders.

'Oh… it's the brother… such a young demon.' The first murmured, his smile widening till Catherine thought his face might split.

The battle ensued. Sebastian switched to his true form immediately and the amount of power he carried intimidated the three full-fledged demons. But they fought. But one did manage to get a hold of Catherine. He held the claw to her neck and she screamed shrilly, her face showing pure anger. Her body distorted, her eyes glowed bright and she ripped through the demon's body with claws of her own. Black tentacles burst from the ground as she instinctively cast a spell. It was over quickly with Sebastian beheading two.

'Sister, you're getting greedy.' Sebastian said without reservation, a smirk on his face. His sister was growling at the final demon, sniffing his, taking in the delicious demon sense. Her teeth were bared. To think his sister would even devour her own kind… technically her own kind, one half of anyway. It made him rather proud. However… demons were made of different stuff. 'I would advise you against cannibalism.'

'I see the higher ups have screwed up with this pair.' The beheaded demon commented wryly. The second sighed.

'I wish I'd known before this happened.'

Catherine glared at them hatefully. They attacked her because they thought she was a monster. Monster. Her parents had called her that. She hated it. 'If I eat them, will they die?' she asked her brother mock sweetly but Sebastian knew she wasn't joking.

'Not sure.' Sebastian answered simply, uncaringly. The three demons blinked. Should they feel fear? She bit savagely into the shoulder of the only not beheaded demon. He jerked forward with pain. The demons had their answer. They should definitely feel fear.

Sebastian sighed. Of course. She was not one to follow advice and obey orders. She spat out the chunk of meat. The red blood had turned black and the meat began to rot. She coughed up the blood and wiped her mouth frantically. 'You are disgusting!' She exclaimed, shoving him away like one would with a plate of some horrible vegetable. The demon didn't seem to care about the insult. He stared at her with shock. She really did try to eat him.

Sebastian began to laugh. He offered a hand to his sister. 'Come, we'll wash that out of your mouth.' She took his hand and nodded, not even giving the demons a second glance.

'Yes, brother.' She said readily, eager to be rid of the foul taste.

PART TWO

'I wish I could sleep.' Sebastian said suddenly one day. Catherine looked at him.

'It's really boring. I wish I didn't have to.' Catherine complained in return but when he said nothing, she frowned. Demons couldn't sleep. She herself only slept two hours. 'Why do you want to sleep?'

'Staying awake. Being alert all the time. It's tiresome. Dull.' He explained simply without even looking at her. He startled when he felt familiar arms wrapped around him and pull him away to the bed she slept on. She sat down, leaning her back against the headboard and forced her brother to lay his head in her lap.

He said nothing even though the act felt like vulnerability and he despised weak, pathetic things. She stroked through his silky black hair and he looked at her curiously. Then she opened her mouth and a lullaby spilled forth from her lips. It was by no means pure and sweet. An unholy song. Sebastian almost smiled at the pleasant melody.

'Lay your head in my lap,
While I drown you in dark waters,
Swim through the empty space,
Get no closer to heaven,
This is where you'll stay,
Drown in the sorrows of others,
Float in the blood of angels,
Aren't you glad for me?
Who sunk you into this hell?' she sang softly, their black eyes deep abysses. Sebastian closed his eyes in content.

'I am glad for you, who sunk me into this hell.' He responded quietly.

Pleased by his words, she sang and sang until Sebastian could almost believe he was asleep. When her voice drooped and she relaxed completely and her voice no longer gave to the song, he stood quietly, set her to bed and waited for his sister to wake. The song repeated in his head for two whole hours.

PART THREE

'No, thanks.' Catherine refused easily, now looking just sixteen. Her black dress was short and seductive with all kinds of metal adorning and chains. She looked like a true demon. The Great Lord of hell held back his snarl. How impertinent!

'And why is that?' He questioned calmly. Catherine turned to look at him with a smile on her attractive face. The metal jingling eerily.

'You're common. Boring. Dull. I want someone unique, adventurous. And preferably with a sense of humor.' She insulted honestly, her upturned lips provocative. The Great Lord grimaced at her.

'You'd do well to show some respect to your Lord.' He warned her menacingly.

She laughed. 'Respect an idiot? I don't think so. Besides, I have no Lord. I have no King, no Emperor, no Ruler! I am one of a kind!' She said, enjoying the fury on the Great Lord's features.

'One of a kind creatures often go extinct.' He intoned with all the malice his malevolent voice could hold. She grinned at him, the corner of her lips forming a smirk.

'What are you going to do? Attack me? I have spells you can only dream of.' She bragged bravely. 'Or perhaps you don't fear my brother so much.' She dared.

The Great Lord went silent. Of course, he feared Sebastian. He was the strongest demon around. More demon than any other, even the Great Lord. Had Catherine asked him to battle the Lord, he would've won and gained hell. That was half the reason why the Great Lord chose to court Catherine. It was no secret Sebastian was fond of his sister. He would not touch her mate should she choose one, for her sake. The other half of the reason was Catherine herself, in addition to being inhumanly beautiful, she was powerful. Extremely so. A Great Lord's strength comes from the mate he selects. Lords with strong mates hold their authority for longer.

'I will do nothing.' The Great Lord admitted through clenched teeth.

'Wise of you.' Catherine said condescendingly, smirking before she exploded into black rose petal, floating on the unholy winds. The Great Lord fisted his hand in absolute fury.