Yay first request from a guest. They asked for a Mukuro x Oc, and that's it. That's not much to work with but I'll try my best hopefully you like it.

Just a for warning this is going to be a bit of a cross over BSD.

P.S. I don't own KHR

A deep breath in, slow breath out. Deep breath in, slow out. In through the nose out through the mouth. The breathing exercise was not new to Marie, in fact it was almost a daily thing for her. At least as the year came to a close it became a daily thing in her life.

Who knew being in the mafia while a full-time student at a grad school could cause so much stress on one person. She knew of course. Marie had taken in and considered all the pros and cons of deciding on continuing her education while doing the dirty work of the underground world. And normally she could deal with the stress that came with her choice. It's just that when you have a 2,000-word essay due at the end of the month, four large drawings for art class, and two exams coming up in the next two weeks, it all can start piling up fast. With the added weight of finding information for a very important upcoming infiltration mission for famillia, didn't help Marie's stress or her sleeping schedule.

Maie would normally describe herself as a well centered and above average student for the most part. She would admit that she often pushed herself too far along with punishing herself for her shortcomings a little too harshly. But what could she say, she just wanted to be successful in life. Didn't everyone want to be successful?

Behind thin sheets of glass, pale copper colored eyes stared down at the Italian designed door handle. It's gold color obviously dulled due to age, but it kept some shine to it from the constant us. Marie swallowed the large lump in the back of her throat. What can she tell her boss, that she was swamped with school work that she hadn't been able to find much information about the building that they were looking to infiltrate? That would surely get her punished…..Okay let's face it, her boss wasn't one to punish anyone really unless the really deserved it. At most she would get a firm talking to about how her health was important and that she should take better care of herself, and then be sent off on leave for the rest of the school year with the typical 'school is more important' jazz that everyone spouts.

Burning pain shot from were Marie's nails dug deep into her palm. Of course, school was important but so was other people's lives. If they had no insight and information on the building and the other Family that ran it, it could mean death to many people. It wasn't like she was the only one that could gather information, it's just she always gathers the best and the most information. How many times her eye for small details had saved the inside people. Normally she caught small things that normally someone would not think off, an old vent shaft that was no longer in operation, were the hollow walls were located, old storages that were most likely no longer used, weight bearing walls and pillars, etc. She couldn't just leave the task to just anyone, not even the most well-known mist users, who were renowned for their eye for detail and cleverness could do better than her. Or so has she been told by her boss before, but Marie honestly thought he was just saying that to be nice, there was not a mean bone in that man's body.

Taking one more deep breath Marie lifts her shaking hand to grasp the gold door handle. "Oya Oya," At the sudden rumble of a voice from the spot next to her, Marie jolted in shock. Teeth clicking together as they narrowly missed clamping down onto the tip of her tongue, "she finally decided to go in." Pale copper met miss matched blue and red eyes of a tall man with a very unusual hairstyle.

"C-Can I help you?" Marie's mouth opened and closed for a moment before she could stutter out her question. Small dark green locks of hair that had been jostled from either of the two buns she had on either side of her head, tickled her as she tilted her head in question at the odd man. She had never seen this man before, in all her years (a whole 3 years) that she worked for the Vongola she had never run into this particular man before. Standing at a whole 6 feet tall he was an odd looking man, to say the least. Don't get her wrong, he was definitely handsome. But with a hairstyle that resembled a blue pineapple with a ponytail, heterochromatic eyes, one of which having the symbol for one, and a military-like outfit made this man scream odd. Not to mention that the creepy 'I will eat your soul' vibe she got from his closed lip and eye smile did not help any with her first impression with the oddly handsome pineapple.

"Kufufufu..," neither did his odd laugh get him brownie points with her 'this guy's fucked up' meter, "I was going to ask you that. You were standing there staring at the door knob for almost a half an hour now." And you were just standing there watching? Creeeeepyy….

Marie flinched at the amount of time she had wasted standing here looking at the weirdly designed door knob. She was supposed to meet with her boss almost an hour ago if she had spent can half an hour just standing in the middle of the hall.

"Now Miss Bad hair-do," Marie twitched at the insult, doesn't this man own a mirror, his hairstyle was almost as bad as hers. Sure her's was a bit childish for someone her age but it was all she wanted to do, plus she couldn't have left it down with it miss behaving the way it was this morning. "What could you possibly want standing in front of the Vongola bosses door? If it was a meeting you will have to actually go into the room for that. But first you will have to wait your turn, I had a meeting with the Tsunayoshi an hour ago, which thanks to you standing here blocking the way I'm even more late to it."

"Wait an hour ago?" Marie blinked and opened the planner she had in her other hand. Looking at the day's date and for the time that her meeting she was supposed to find. "I was supposed to meet with Boss an hour ago too." Glancing up at the tall man's face she could tell that he was not happy if the slight twitch of his eyebrows was anything to go by.

The man's lips parted in an attempt to say something, most likely rude, but he was interrupted by the sounds of the door they stood in front of clicking open. Pale copper eyes met the orange eyes of the 10th Vongola boss. A small smile spread across Tsunayoshi's lips.

"There you two are, I was beginning to worry." At his statement, Marie visibly paled and stood as straight as she could.

"Please forgive my indiscretion, Sir," Marie begged as she bowed as deep as she could. Not only is she late, but she also has little to no information that was asked of her. How could she not be punished for her poor performance, she was definitely going to get punished for this, or worst fired, aka, killed. "I'll take whatever punishment you see fit." Better to get it done and over with then let it sit and simmer.

"Please, Marie, there's no need for that, raise please." Gloved hands, gently gripped the young woman's shoulders, gently coaxing her out of the deep bow. Shifting his eyes over to the man that stood next to the short women. "Mukuro, I'm surprised to even see you here." At the younger man's statement, Mukuro put on a deadly smile.

"I have to check up on my future body from time to time, you know." The blue haired man then gave his signature laugh. At his Mist guardians answer the young boss nodded his head, taking the now empty threat with stride.

"Of course, why don't you two please join me in my office so we can discuss the infiltration planes." With a warm smile that no one would normally picture on the boss of the strongest mafia family, he leads the now confused Marie into his large office by her shoulders.

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"I can't believe he's making me do this," Marie whined as she slipped her black stilettos over onto her feet.

"Kufufu, I thought you've gone on missions before." Marie glanced over at the man on the opposite side of the spacious seat of the limo they had rented for the party. For being such a weirdo she must say he did clean up nicely. He looked nice in an English cut suit, the red tie and black vest and jacket went well with his color scheme. He still had his hair in the normal style, but his eyes both matching thanks to his illusions.

"Well I have, it just it's more of I'm sent before the main mission to make a map of the inside of the buildings and to memorize the patrols stuff like that." Marie frowned as she adjusted the collar of her dress once again. She had to give credit where credit was due, the Vongola had good tastes in clothing. The dress they had dressed her in was a sleeveless long dress, with an elegant high cut swan styled collar that accented and defined Marie's long neck. The colors of the dress were one of the few things that didn't clash with the color of her hair. Near the top of the dress, it started out as black and gradually as you go down the black faded way to white and a blue-green. The skirt was loose and flowy, making it easy to move around. But as much as she loved the dress, she did not feel comfortable with it. The slit in the collar had gone down way past her collarbone and down to almost her belly button. The back of the dress was cut out showing from her shoulder blades to the bottom of her lower back. It was safe to say that Marie felt a little more than overexposed in such a dress. Despite the few strings of hair that hung at the sides of her face the Vongola women had even managed a miracle, in taming the disaster that was her hair in an elegant bun that sat neatly on the top of her head. Decorating the bun with a few white flowers and pearls that matched her other jewelry, topped her outfit for the night.

"So this is the first time you will be entering a situation that could possibly lead to combat." A blue eyebrow raised at the women that sat next to him. He had to admit that had he not known better he would say women that sat next to him could have been completely different women than that of the one he had met in the halls of the Vongola mansion. Gone was the messy hair, baggy clothes, and large thick glasses, and hello to a woman who looked like she could rule a court with looks alone.

"I can fight if that's what you're asking. Just because I don't look like it doesn't mean I can kick ass." But no matter how much paint you put on her that rude mouth and attitude stayed Mukuro's lips twitched in a grimace. "I'm just normally not dressed like this, least of all working on the main mission." Marie huffed and reached over to adjust his tie. The man lets her, obviously fidgeting and tweaking things was her way of dealing with stress.

"Well, you wouldn't be doing this if you had done your part in the mission in the first place." The blue haired man pointed out. A satisfied smirk made it's way to his lips as he watches the women in front of him twitch at the jab.

"Hey, you try going to full time grad school and then do full time work for the maffia and then tell me that you alian." Marie snapped and 'accidently' tightened his tie to tight. The sweet feeling of satisfaction filled her as she watched his sickly sweet smirk turned into a grimace as the pseudo gentleman pulled away, and loosened his tie from it's tight grip on his neck.

"And here I thought you were supposed to be some sort of genius, but it looks like that fool of a boss was wrong about you, Miss Badhair-do." with that last jab at her appearance when they first met a handful of months ago, the pineapple haired man turned to look out the window. Marie bit the inside of her cheek to and balled her fist in a poor attempt to keep herself from childishly pulling his stupid ponytail. There was no doubt about tonight being a long and excruciating night.

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The light golden liquid swirled in the thin glass she held as she absent mindedly listen to the men chatter around her. How people could stand going to these types of parties were beyond her. There was no good dancing, no good music, and a overpowering stench of too many people who didn't know how to properly put on deodorant gathered in one place. Though that might just be the smell of the kaviar, that sat on the table that was filled with different types of expensive foods.

Marie brought the thin flute up to her lips and took a small sip of the champain. From under her eyelashes she watched Mukuro dance with a older redheaded women dressed in traditional japanese kimono. Allowing the chamain she took into her mouth slide back into the glass as she brought the rim away from her mouth, and placing her glass onto the table next to her. There was some weird people at this party, Marie mused to herself as she glanced over to the man dressed in a tattered clothing. Watching him stick his hands into his white lab coat that was fraying at the ends. Who makes lemon shaped bombs anyways? Brows crinkled she glanced over to the large stairway were a man dressed in all black stood his hand casually resting in his pockets. On his head, covering his long orange hair, was a black fedora with a red strip around it. Next to him was a brown haired man in a plain brown suit. They were whispering to each other about something. On the other side of the room across from her was another man dressed in all black, but the ascot around his neck. Next to him a blonde lady stood a little bit away from him, also dressed in a black suit. Whats with these people in black?

A sigh slipped pass her lips, this was soo boring. When Tsunayoshi had said infiltration mission, she thought it was going to be your typical sneak in grab what ever you needed/kill whoever you needed and sneak out without being noticed. But no apparently the Vongola had been invited to this little shindig, and what Tsuna wanted them to do is see if they could get a meeting with the leader of this whole Mafia family.

There wasn't much they the Vongola new about them, weirdly enough seeing as the had been around for quit awhile. But it was kinda hard to get incontact with a family who was stationed on a island that was often left to it's own devices. Due to this isolation that was set up Tsuna jumped at a opportunity to interact with a mostly unknown mafia family. Though it seems that the Boss wasn't going to be making his appearance anytime soon. That means they will have to do it the old fashion way.

Straightening out her back and steadying her gaze straight ahead of her, Marie glided over to her partner in crime for the night. Lightly tapping the older lady on the shoulder.

"Pardon me do you mind if I cut in?" Marie allowed a soft smile slide onto her painted lips, gaze flickering over to look at Mukuro.

"Of course my dear. Thank you for allowing me to spend moments with this gentleman." The red headed lady gave a slight dip of the head as she pulled out a hand fan, using it to cover the bottom half of her face as she glided away. Marie watched as the women in red made her way through the crowed of black clad figures, sticking out like a beacon in the dark. Watching as the women disappeared up the grand stairway in the middle of the room before turning back to the man in front of her.

"So care to dance?" Marie asked bluntly with a tilt of her head.

"My how flattering of you to ask." Mukuro lifted his hand in invitation to her. Marie frowned at his attitude before placing her smaller hand into his much larger one. Allowing him to whisk her away onto the dance floor in a waltz. The pair silently danced for a few moments, observing their surroundings the best they could while keeping up the facade of looking into eachothers eyes. "I'm surprised you can even dance Miss Badhair-do." Mukuro jested while he led her into a spin.

"Of course I can, when I was younger my parents signed me up for ballroom dance. I participated in competitions and taught some lessons to younger children through the park and reck during the summer." Marie explained glancing to the left as they passed the redheaded man that guarded the stairs.

"Your skills show your years of practice." Mukuro complemented, for once meaning what he says.

"Thank you, but now's not the time to discuss such things." Marie the complement in strides. "It's way past the time were the host would normally show their face to their guest." Marie pointed out.

"I am well aware of that." Mukuro pointed out.

"It looks like we will have to discreetly make our way up stairs if we want to meet our lovely host." Marie continued on as if he hadn't said anything. "There's a second set of stairs that lead up to a floor between this one and the one the one that the big set of stairs leads. They are over in the left part of the building. The only issue is if we want get up to the very top of this tall ass building, were I'm guessing our lovely host is located, there's a issue. There's only two ways to get to the very top, either by those stairs that mister fedora and plain suit are garding or a elevator located on the third floor, but you need a passcode to access the buttons that are for the upper floors. Now I could hack the controls for the elevator but that would ta-" Maries rambling was cut off when Mukuro suddenly pulled her flush against his body drawing them into a dip.

"Kufufufu..who says we will need to go through such a long process." Marie shivered as his lips brushed against the shell of her ear. "There's no need for all that nonsense, when we simply can walk right up those stairs in front of us." Biting her lip at the sensation of his cool breath against her heated skin.

"Mukuro don't be stupid we can't possibly just wa-," Marie was once again cut of when Mukuro lead her into a fast spin, letting her go in the middle of it. The heterochromatic man watched as his partner spun passed the two men that acted as guard dogs. With long strides Mukuro caught up with the spinning women with ease. Wrapping his arms around her thin waist and dropping her down into a deep dip right before she could trip and potentially hurt herself on the stairs.

"Oya oya, it sounds like you have no idea who you're with right now. Are you sure you're a genius?" Mukuro taunted watching as her pale copper eyes blinked up at him in confusion. Looking over his shoulder Marie couldn't believe what she was seeing, there in the middle of the dance floor was herself and Mukuro dancing away like all the rest. She knew that mist flames could create illusions, but she had never seen mist flames at work up close befor.

"I was going to suggest doing this." Marie lied. She huffed as she pulled out from his arms. Turning away from the alien, she made her way up the long stair way without further adu. She was really grateful for the high swan collar on her dress now, it did a wonderful job at covering most of the blush that colored her pale skin. "We still need to have a code for the elevator in order to get up to the top floor." Marie stated out loud.

"Just leave everything to me...Miss Badhair-do." Mukuro said as he easily passed her with his long strides. His lips lifting in a smirk at the sound of her teeth grinding together in frustration.

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The silence that filled the elevator was suffocating. Marie made sure to stand on the opposite side of the small box with her back facing the pineapple alien. Out of the corner of her eye she watched as the floor numbers gradually rise. Who thought putting mirrored walls on the inside of elevators was a good idea? Because who ever did is just plain wrong. All Marie wanted was to get her jerk of a partner out of her line of sight for a few moments. That's all she really needed, just a few moments of not having his stupid handsome face out of sight and out of mind, that way she can get her thoughts back in order and finish this mission. The faster it's done the faster the pineapple can get out of her life.

"Oya, someone's pouting Kufu.." At the sound of his voice right by her ear Marie did her best not to react. "Oh, am I being ignored?" Mukuro questioned the unresponsive girl.

Of course you're being ignored you asshole. What person wouldn't ignore a annoying guy like him. If he keeps this up working with Lambo will be better then him. Too caught up in her thoughts, Marie failed to notice the mischievous look on the man's face.

A sharp cry of surprise slipped passed Marie's lips as she was pushed up against the cold surface of the elevators walls, her arms trapped between her body and the wall when her body automatically tried to catch itself. The high collar of her dress was pulled down, exposing the back of her neck to the puffs of breaths that escaped the older mans mouth. "W-w-what do you think you're doing?" Marie's voice went up can octave as she felt the dull ache of teeth scraping against the back of her neck. Instantly she could feel blood heat her pale cheeks down to coloring her neck and the tips of her ears red. Breath hitching as she felt him make his way to the side of her neck right above where her pulse sat.

"What does it look like I'm doing? Playing with my new toy." Mukuro rumbled into her ear pinching her earlobe between his teeth. Marie bit her lip in attempt to muffle a squeak.

"I-I-I'm not a toy to play around with, now release me." Maire demand in a shaky voice.

"Kufufufu..You have no idea how good you look in this dress do you. Like a queen sitting above her subjects demanding them to look at her without even having to command them to do so." Mukuro paused to roughly suck at the pulse that sat were her shoulder and neck met, sliding his calloused hand up her exposed part of her back.

"Yeah, well, if I'm a Queen, I demand to be released you alien." Maire demanded once again in a stronger voice. At her demand Mukuro released another one of his chuckles.

"You can't control me my dear queen." Mukuro whispered as he ran his thumb of his other hand back and forth against the exposed skin of her stomach. "But luckily for you, we have reached our destination." With that it was as if he was never there, his warm body completely gone from pushing her into the wall.

Quickly not to let him get away with his dastardly deeds Marie swiveled around to chew him a new one. But the loud ding of the elevator stopped her rant before it could even start. She watched in a dumbfounded manner as the so called gentlemen stride out of the elevator and down the dark hall that lead to a set of large oak doors. Gritting her teeth she followed his tall frame down the hall, being sure to keep a wide amount of distance between them.

With silenced steps the duo stepped up to the large set of doors. Glancing at the tall man beside her, she reached for the black handles with a shaking hand. The cool metal of the handle felt good against her heated skin as she grasped the long handle and pushed down, opening the door with a click.

What greeted them on the other side of the door was not what Marie had thought would. The room was large and spacious. Floor to roof windows covered the whole left and right wall. The opposite wall from the door their was dark desk on a raised platform. Black marble floors shined in the setting sun's light. In the middle of the room was a sitting area made up of two arm with a side table in between them, a couch and a coffee table in the middle of it all. It was a plain but oddly elegant room.

It wasn't the style of the room that Marie found weird but the occupants of the room. On the marble floor sat a blond young girl scattered around her were crayons and paper. Obviously for drawing but instead of drawing on the paper given to her the little girl was drawing on the marble floor itself. Behind her in one of the arm chairs sat a older man dressed dressed in black (Seriously what's with these people and black?) with a deep red scarf draped across his shoulders. Aways away from the odd duo stood a man in a black coat, covered in bandages, with long brown hair. The reddish brown eye that was not covered in bandages stared at them in confusion.

"My it seems like we have a few lost lambs." The older gentleman sitting in the arm chair stated, sounding more entertained than angry at their intrusion. "What can we do for two this lovely evening?" He questioned lounging back without a care in the world.

"Kufufufu." Marie glanced over at her partner as he released his signature laugh. She watched as he pulled out an envelope from the inner pockets of his suit jacket. Stepping up to his side she took the envelope from his outstretched hand. Steadily making her way over to the man sitting down with even confident strides, the points of her heels making light clicking noise that filled the tense air of the room.

"We come on the behalf of the Vongola family." Marie started as she reached the middle of room. Placing the thick envelope onto the table. "Please excuse our intrusion, but this was the only way we were able to talk face to face otherwise." Remembering to give a small bow in apologies, Marie straightened out only to find a knife pointed directly at her face. Not flinching at the sudden threat Marie locked eyes with the small blond child that held the weapon to her face.

"Do tell what the world's strongest Mafia family wants with little old me." The man hummed as he picked up the thick envelope. "Dazai, come here and open this would you." The Boss of Port Mafia called out to the other man. Out of the corner of her eye she watched at the bandage man glide over with silent strides. With the way he walked he must be someone of importance to Port Mafia.

"In that envelope are negotiations." Mukuro picked up where she had left off. "The boss of Vongola is a odd man. In general the negotiations state that you can continue to do your doing, as long as innocent and bystanders are not harmed. If these conditions are meet and held to, Vongola will happily extend and make an alliance with the Port Mafia." Silence filled the room as Dazais one eye darted across the pages of the negotiation paper.

"It is as they say, it's negotiation paper extending can alliance with the Vongola family." the bandage man confirmed the mist guardians statements. The sitting man took the sheets of paper to confirm it for himself.

A moment of tense silence was shattered when the sitting man released a snort before breaking out in full belly laughter. His whole body shook as tears streamed down his eyes. "You were not lying when you said the Vongola boss was a odd one." He said between his spurts of laughter. The two Vongola members watched as the Port Mafia boss reached into his coat and pulled out a lighter. "Does he not realise what the mafia is?" He asked as he flipped open the lighter and ran it under the papers setting them aflame. "As much as I would like to have can alliance with the strongest Mafia family, I can not accept your invitation." He stated as he held the papers as they burned. "So, this is where we say goodbye. Kill them." His cheerful nature was gone with a blink of an eye, replacing it was a ruthless man as he gave the orders to the two intruders execution.

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A women with long teal hair that was pulled to the side in a long thick braid sat outside of a peace full cafe. She was dressed in a gold sundress, on her feet were white roman style sandals. A small black book sat forgotten beside her along with her white purse. She was gave off can air of graceful women, and if it wasn't for the long scar that ran from the corner of her left eye down passed the color of her dress, she could have easily been mistaken for a model. Many of the men who passed by, let their gaze linger longer than they should have. Some would have even approached her if it wasn't for the longing gaze she held in her pale copper eyes as she gazed down at the ring on her ring finger.

Marie never thought she would find herself on this isolated island ever again. It had been years since the first time she had came here with Mukuro under Vongola orders to negotiate an alliance with the Port Mafia. She honestly never thought she would ever set foot in this city either, but here she is waiting for her pineapple alien to show his annoying face at the meet point. But surprise surprise he's late, like always when it comes to orders from Tsunayoshi. Anything to make is seem like he's still against being with the Vongola, she supposes.

Looking up from the newly placed ring on her finger she gazes out into the street. Not only is her partner late but so is their contact. She guesses this is a good thing, seeing as if her contact is late they will never know that half of the family members sent out was late. But still, this was ridiculous, 15 minutes late she understands but a hours is just beyond pushing it. She now knows how Tsuna felt when all this started.

"Oya, who's this pretty lady sitting all by her lonesome." A familiar voice broke through her daze. Glancing over to the seat to her right, there sat one of the people she was waiting for. Mukuro for the most part had not changed throughout the years, though she swears his hair has gotten more pineapple-y somehow, how it happened she doesn't know.

"You're late." She stated ignoring the complement. Out of the corner of her eye she caught the shine of the sun reflecting off of a reflective surface. There standing out from all his other rings that covered his hands on his ring finger sat a plain gold band. At the sight of the band her cheeks heated and she quickly looked away. It was going to take her some time to get used to the thought of the man sitting in front of her as her husband.

The blue haired man chuckled catching on to her sudden head jerk to the left. His queen sure was stubborn at times. He stopped chuckling when he saw her head perk up in recognition. Following her pale gaze Mukuro caught sight of what she spoted.

Standing there on the other side of the rood stood the man that they had met years ago. No longer was half his face covered with bandages, and his black attire was replaced by lighter brown scheme. His once reddish brown eyes were now just a plain brown that was filled with a much different light than the one they held before. Behind him stood a man dressed in traditional green yukata was a gray haired man that had frown lines around his eyes. The duo glanced at each other before standing up. Their contacts have arrived, time to get to work.

A/N: I'm going to end it here, it's a lot more than I thought I was going to do honestly. I know there wasn't a lot of direct Mukuro/oc scenes but hey Mukuro and romance just don't mix well together.

I'm sorry if Mukuro seems a little out of character, but he is one difficult character to write. I used to be able to write him pretty well, but I guess I'm pretty rusty. Oh well….

I did my best to read over it and check for errors, but I'm not the best at it so pardon me for any mistakes.

Thank you for reading, and please don't be afraid to leave a request in the comments or in my PM. Have a good night. :)