WARNING: This crossover fanfiction really will contain LEMON scenes, I promise. D: It's just going to take a while. There will also be LULz to come, like, a lot of them. And I will bring in more of the characters, in due time.

Disclaimer: I don't own VK or BB/Kuroshitsuji, and the full respect and worship-ness goes to their respective mangaka. Go read the manga and watch the anime for both. They're really good. I only have the claim to the storyline, and the right to make the characters OOC sometimes.

Several days had passed since Ciel had let Zero stay at his home, the silver haired man seeming to get the swing of daily routines quite easily. The more times he played with Zero, the more the young Earl became intrigued by the Hunter. The day he got the invitation from Her Majesty was the only day that week that he couldn't relax.

Ciel currently sat at his desk in the study, re-reading the letter from the Queen a third time. She wanted him to go, in disguise, to a party at Viscount Druitt's home because there were rumors of him having continuing in the black market sales of human beings. Remembering the case of Jack the Ripper, the boy shuddered in horror. He didn't want to go back to that man's home. And if he did, he'd have to wear another dress, which he most certainly didn't want to do. Damn.

"Ciel?" The voice startled the Earl and caused him to jump, blinking rapidly as he glanced up at Zero - who stood in front of the desk with a questioning look. He gazed off, embarrassment causing his cheeks to flush a light shade of pink. He cleared his throat and waved a hand, setting the letter off to one side.

"Ah, I apologize. Seems as though our plans have changed tonight." he spoke quickly, running a hand back through his hair. Sebastian appeared in the room, and Ciel was only half surprised to see Zero flinch. That was obviously one thing the man hadn't gotten used to.

"Sebastian, you already know of our schedule, so help me get ready. Zero, you should-"

"Wait. I want to come as well." Zero spoke out of nowhere, and Ciel raised a brow at him.

"You do realize that this is my work and not yours?" Ciel said as he stood away from the desk. Zero gave him a hard look, and Ciel had to fight not to look away.

"If you're dealing with the Underworld, Ciel Phantomhive, then there are bound to be those of whom I hunt." he said simply, which caused Ciel to finally turn his head away. He made a 'tch' noise in his throat and headed off for the door with Sebastian.

"Very well. We'll see how you handle this affair then." he replied before disappearing down the hall. Great. One thing he didn't want was for Zero, of all people, to see him in a dress. He wondered, briefly, if the Queen liked these games...

Zero finished dressing quickly, running a hand along the thin fabric of the suit he was given. He didn't like dressing like this, it was too formal and quite uncomfortable, but he had to be like this if he wanted to accompany the boy to this 'Druitt' man's home. He couldn't help but have a bad feeling in the pit of his stomach, though, as he descended the stairs into the foyer and headed out the doors. Ciel was already in the carriage, then, and Sebastian waited for him.

"Bocchan has requested that you ride in the coach's seat with me, Mr. Kiryuu. He wishes not to be seen until absolutely needed." the butler spoke with a smirk and a look in his eyes that seemed amused. Zero narrowed his eyes and shrugged, leaping up onto the seat with ease.

"Let's go then." he muttered. Sebastian bowed lightly and got up beside him, pulling a pair of glasses from his dress coat and slipping them on. Zero scoffed, arms crossed lightly as he gazed off. He heard the butler's chuckle as the reins cracked and they started off. Man, the guy really got on his nerves.

/ Later /

When they arrived at the mansion, Zero wasn't really impressed. He dropped from the seat and slicked down his suit, moving to stand beside the carriage door. It was fairly dark around this time of the evening, and his attention was drawn to the other nobles going up the stairs to the double doors that stood wide open. He heard the click of the carriage door, and the sound of.. heels on the pavement? He blinked, glancing back. His eyes widened, a look of complete shock on his face.

Ciel stood clad in a long sea-blue dress, white lace adorning a few spots along with lighter blue bows. His hair was done up in twin buns, a halo of flowers covering his right eye from view. Zero blinked several times again, cheeks burning as he forced himself to look away. The style of dress showed Ciel's neck and shoulders, and it was very tempting...

"This.. is so the Viscount won't recognize me as Ciel." the boy spoke, glaring off a bit with his own cheeks reddened. Zero raised a hand and pushed it into his face lightly to will the blush away before dropping it again with a sigh. He glanced at Ciel again and forced a smile, holding up his arm in a gentleman's gesture. He received a glare, but the boy twined their arms together and they headed up the steps with Sebastian close behind.

"You look too much like a girl, honestly. You definitely pull it off." Zero whispered, smirking slightly when he felt a pressure on one foot. He glanced at Ciel from the corner of his eye, easily noticing the plastered smile and the glare he was receiving.

"Don't push your luck, Zero." Ciel muttered back at him, which in turn made Zero smirk a bit more and turn his attention back to the mansion before them. He had a feeling that tonight was going to be kind of fun.

They had finally gotten through the doors, and Ciel had allowed Zero to lead him off to one of the walls close to the balcony. There, he detached himself from the man and placed his hands together in front of him, gazing around slowly for a sight of the Viscount.

"I've seen.. some of these people.. before." he heard Zero mutter under a breath. He glanced up at him, blinking once, before gazing more closely at the people around them. True, he saw some of the nobles of London here, but that was normal. A large number of these people, though, he didn't recognize. He noted, though, that the ones he didn't know all had some shade of reddish-brown eyes.

"If they're here, then..." he heard Zero mutter again, and thought he heard the faintest hint of dread in his voice. He gazed up at him, though his attention was shifted quickly to a man walking toward them with a certain grace and agility that reminded him of Sebastian. He paused before the three, his crimson-like eyes held on Zero's face.

"I didn't expect you to be here, in this kind of place.. Zero." the man spoke, and Ciel couldn't help but shiver at the voice. So this man knew Zero, and it seemed that Zero didn't feel very comfortable around him. The more Ciel looked at him, the more of his features he could tell were completely refined, even the messy style of his mahogany hair had it's own appeal.

"I didn't know you'd be in London at this time, Kuran. If I had known, I wouldn't have come here." Ciel looked back at Zero, raising a brow lightly. Kuran? Why did that seem familiar? Where had he heard it before..?

"That doesn't seem fair, Zero. After I took all the trouble of specifically coming to find you, you don't even call me by my name - or introduce me to your companions." the man said softly, his gaze slowly trailing to Ciel. Ciel stiffened drastically, his gaze captivated by that of the man.

"This is..." he heard Zero say, but trail off. Ciel snapped out of his trance and spoke quickly.

"Ciel Phantomhive. Though I'd appreciate that fact to remain unknown to the others around us." he said. Something told him that he shouldn't, and probably couldn't, lie to this man. He still couldn't pull his eyes away from that gaze, though, and he stretched a hand out towards him.

"Ah. The famous Phantomhive. It's a pleasure to meet you, though I suppose it would have been better if the conditions were not as such." the man said, taking Ciel's hand and bowing slightly to push warm lips against the satin of the glove. Ciel shivered, biting his lip softly.

"This is Kaname Kuran, his family is quite.. well-known.. where I come from." Zero spoke, but Ciel only caught the name.

"Kaname.. Kuran... Ah, I see. You're making a name here for yourself as well, aren't you?" Ciel muttered, finally having his hand released. Kaname smiled warmly at him and nodded. As if only remembering where he was, Ciel blinked and gazed off a bit.

"Ah, this is my butler Sebastian. Don't mind him, though." he said, gesturing loosely to where the demon stood. Kaname seemed to glance that way and nod, which Sebastian mimicked the gesture, and then turn his attention back to Ciel.

Zero didn't like this at all. He had caught the scent of nobles from the moment they stepped into the mansion, but hadn't noticed until he glanced at the people. And once he figured out that there were so many, he had finally caught scent of someone he really didn't want to meet that night. But he hadn't been so lucky. He had watched the Pureblood approach them, their gazes locked before Zero had looked away, and they had exchanged few words. It was when he had introduced Ciel, that he had started feeling a bit angry.

"Bocchan. Have you forgotten why we are here?" he heard Sebastian say. He couldn't help but glance at the boy and hide a satisfied smirk when he had glared at the butler.

"Of course not. Go locate him." Ciel responded, waving a hand at him. Zero kept his eyes locked on Ciel, though his attention wasn't on his face - it was held firmly at the exposed neck. He could feel it now, once he had stopped to look, and the vampire in him pulsed with excitement at the thought of tasting the young Earl's blood. Zero grit his teeth and quickly looked away, his bangs straying to hide his crimson gaze.

"Zero... How long has it been since.. that?" he heard Kaname ask. Zero snapped at him harshly, glaring heavily at the taller Pureblood.

"None of your business, Kuran!" He could feel Ciel's gaze on him, and glanced down at him slowly. He watched the boy's face come alive in surprise and maybe a slight hint of fear, and it only succeeded in further exciting the monstrous side of him. He turned away quickly and moved towards the balcony doors, holding back the primitive need to have blood to survive.

"Zero, wait!" he could hear Ciel's pursuit, and hastily grabbed onto the wooden railing on the balcony's edge. He readied himself to jump, but stopped cold when the silken gloved hand caught his arm in a death grip. He dipped his head forward a bit, not wanting to look at the human - no, not human.. he didn't think this way!

"What are you, exactly, Zero?" Ciel's voice reached him, though again he fought the urge to look at him. He swallowed heavily, willing his voice not to betray the blood-lust that had taken over.

"A.. monster." he managed to say. He felt like Hell had split open in front of him and the heavy chains of damnation were slowly dragging him towards the never-ending flames...

"Kyuketsuki... A vampire. Am I wrong?" He blinked in surprise, glancing back at him finally. Ciel stood, still holding his arm tightly, with a smirk and a dark look in his exposed eye. He turned to face him slowly as Ciel shifted closer, lifting up on the toes of his heels.

"Bite me, then. I want to know.. what it's like. Ever since I found out from Sebastian what you are, I can't stop thinking about it. And you know how greedy I am, Zero." Ciel spoke lowly, his neck agonizingly close to Zero's mouth. The vampire blood in him pulsated once more, and he could smell the blood beneath the thin layer of skin. He tried desperately to push the boy away, or to drive himself to jump from the balcony like he had planned - but he couldn't fight it anymore.

"You're a real pain in the ass, Ciel... You know that?" he growled, wrapping his arms around the boy and sinking his fangs into the unprotected neck. It tasted like none of the blood he had before, he hadn't bitten a human yet. He moaned a bit lowly as he sucked at the wound, and he could hear Ciel's small gasping moans so clearly. After a moment, his mind was returned to him and he drew away slowly, running his tongue almost possessively over the mark.

"It seems I've overestimated your willpower, Mr. Kiryuu. I realize I should have acted sooner." Zero's head snapped up, a low growl forming in the back of his throat as he watched Sebastian approaching them with slow steps. Ciel had gone limp in his arms, but he could still hear a heartbeat, so he shifted to where he held him in a bridal-like manner.

"I'm not going to let you harm him, demon." Zero snarled before turning and leaping off the balcony with Ciel held tightly in his arms.

Sebastian watched Zero run off with his master, raising a hand to take the glasses off his nose and run the hand back through his hair. He smirked a bit, eyes glimmering a deadly crimson.

"Overestimated your willpower, and underestimated your cockiness it seems." he muttered aloud to himself, vanishing with a step.

'We'll see who gets Bocchan in the end.. kyuketsuki.'

A/N: Ahh, sorry for the delay! I haven't had much muse until a couple days ago, and I hope you liked this chapter! A few things to warn you of.

* Kaname will be paying a visit to the mansion at some point, and that will be the start of the Lemon scenes.

* Ciel will remember being bitten, but it will be fuzzy and he may start acting a little dazed around Zero.

* Sebastian did actually take care of the mission they were supposed to be on, so that he wouldn't be chastised if Ciel found out that he hadn't.

* Zero regrets biting Ciel. He did take him back to the mansion, however, and is going to be acting a little emo in the next chapter.

SO YEAH! Hope you had fun reading this chapter, and I'll try to have the next up within a timely fashion! Please review and, if possible, put an Alert on the story so you can immediately read the next chapters. :D