A/N: Wow...Never expected to write a crossover, let alone a non sexual one(Gasp!) Yeah I was planning on writing another lemon but...The more I thought about a young man fucking a thirteen year old...The less I wanted to write this...So the for the first(and last for a long time) the first teen story I've wrote!

If you are a long time reader then you may be wondering where my other stories are, I hope to have all of my stories updated by November I hope.

Anyway! Welcome all to "I'm Just One Hell Of A Sanzenin Butler" A Black Butler/Hayate The Combat Butler crossover! It's kinda funny but I have found very few stories of this crossover, you think there would be more...Oh well I guess haha.

This story is a retelling of sorts of Hayate The Combat Butler with the minor(major) difference in that Hayate is no longer Nagi's Butler, but now the glorious Sebastian who can even turn me straight will be!

I know some people may wonder how you mix the over the top comedy of Hayate with the seriousness of Black Butler and I think I have found a middle ground. With the characters around Sebastian still acting over the top with Sebastian still his serious self, I think with careful writing we can accomplish this.

Obviously the story may be more serious than the original Hayate just because it's hard(impossible) to replicate visual jokes and a lot of the jokes revolved around Hayate who is no longer with us(RIP).

Finally this story will be a pretty big Harem, bigger than Hayate as I plan on having most of the girls falling for Sebastian and at a faster rate than some did for Hayate. I wasn't originally going to but after thinking it over, if they fell for Hayate then they will easily fall for the perfect Husbando(Sebastian). Also italics will signify thought's.

Apologies for the long Author's Note! I hope you all enjoy as I try to explore some new territory!

~Elizabeth

"Well...Looks like we have ourselves a real catch here!" A man growled while chuckling as he looked down at thirteen year old Nagi Sanzenin, heir to one of the richest families in Japan. She looked on with fright as she took a step back before slipping on the frozen concrete and landing on her bottom.

"Ow..." Nagi rubbed her behind as the man laughed as he took another step forward as his partner also laughed behind him. "I just wanted something to drink but...Not only do I not know how to work that machine but now these creeps are here!"

Nagi complained in her mind as the man reached down and grabbed her hand causing her to struggle against him "Get the car ready! This little one should be worth quite the penny!"

"Right." The other man turned and jogged back to the car and turned it on as he circled around and pulled up beside the two.

"Wh-Where are you taking me?" The man holding her laughed as he began dragging her to the car.

"No need to worry love, as long as you're family agree's to pay up, we promise to only play with your body and nothing else." Nagi shrunk back some before being forced into the car as the man got into the passenger seat and looked at his partner. "Let's go."

The driver nodded as the car began to drive through the snowy streets with Nagi in the back, she pulled her knees close and laid her head on them "Please...Somebody help."

The man up front sneered "Be quite back there! No one's going to help you and I want to listen to my Christmas songs!"

Nagi didn't respond as the song "Last Christmas" began to play on the radio...Fitting she thought "Please..."

Do you need assistance?

Nagi shot her head up as the radio continued on as the two men up front appeared to be humming to the music, she looked around the back seat and noticed she was still alone "Did...I hear someone or...?"

She lowered her head back into her knees as the car drove on, thinking that her imagination was just playing tricks on her.

It is no trick my dear, I will truly help you.

Nagi again shot her head back up as she heard the voice again, she heard it clearer and knew it was nearby? "W-Who...Are you...?"

I am nobody my dear, just a resident of Hell.

"A...Resident of Hell...?"

"Hey be quiet back there! Didn't I say I'm listening to my music!" Nagi lowered her head back down as the man shot her a glare as if to say 'don't make me say it again'.

Yes...However I noticed you seem to be in trouble...Also speak quietly my dear, I can hear you just fine.

"A-Alright..." Nagi spoke in a much quieter tone so the men up front wouldn't hear her "Y-Yes...I'm not in the best shape now..."

Would you like my assistance?

"Y-" Nagi caught herself, there had to be a catch yes? "Um...What's the catch?"

Not so much a catch my dear, but a contract. One where I will serve as your Butler to fulfil your ultimate wish.

"M-My wish?"

Yes, your wish is to acquire many friends and live as normal of a life as you can yes? I can help you fulfil this wish as your butler.

"Alright...But what's your price."

Nothing my dear...Just, your soul will belong to me.

Nagi heard the voice but didn't flinch or show any fear, either she was going to die here with no friends other than her pet Tama and her maid Maria...Or live a full life of fun as long as long as she gave her life to a demon.

"A-Alright...I-I'll accept your offer..."

Very well then, our contract will now be formed.

Nagi could feel her hand warm up before pain shot through it causing her to grip it and hold on to it forcefully, however the pain lasted for only a second before her hand felt better again. She looked down at it and noticed that a new mark was now on it "W-What is this...?"

Proof that the contract is now complete...Now my lady, what shall your servant's name be?

Nagi kept looking at her hand as she thought, she didn't know what a good name for a butler would be...She kept thinking until the name of a saint she had recently read about in a Manga came to mind..."S-Sebastian...Your name will be Sebastian."

Very well my lady, now what is your first order?

Nagi kept looking at her hand before looking back up at the two men who had kidnaped her "Sebastian...Your first order...Is to save me!

As you command, My lady!

Nagi screamed out the words causing the man in the passenger's seat to look back with a evil glint in his eye "You brat! I told you to stay qu-!"

The man's words were caught off as the car slammed into something causing it to shut off suddenly surprising the three inside.

"H-Hey! What did you hit!?"

"I-I don't know! We were fine until-" The man kept trying to turn the car back on as the cold winter breeze outside continued to gently hit the sides of the car.

"Until Wh-...What the...?" The passenger looked out the front window and noticed a black silhouette standing in front of the car with two red eyes piercing into the car. "Who...Who is that?"

The figure kept looking at them before raising it's hand and bashing open the window shocking and scaring the three inside "Huh?!"

Nagi could only muster that single word as the front window was now shattered and the figure was now a little more visible, but other than the red eyes only a butler uniform could be seen "I'm sorry to interupt your late night drive but...I'm afraid my lady isn't enjoying it all that much."

A polished voice could be heard but beneath it was one that seeped confidence and evil as the figure looked at the two men who were gripping their seats in fear "Wh...Who are you!"

"Oh no one worth remembering, I am just simply the butler of the Sanzenin family, Sebastian!" Nagi's eyes went wide as Sebastian lifted his foot and smashed it into the hood of the car as it easily went through as if the car itself was made of paper.

"You...You're a monster!" The driver screamed out as he saw his precious car easily smashed through by the butler in front of them.

"Oh no my good sir, I am just simply one hell of a butler." Those were the last words nagi heard before everything went black.

...

...

..."Huh?" Nagi opened her eye's and saw the now clear sky as the stars shone above her, she tried to move but noticed she was in someone's arms. She looked at the figure holding her and noticed a very handsome man was looking at her with his red eyes causing her to blush "W-Who are you?"

The man chuckled as he gave a smile "My Lady, I am your butler, Sebastian."

"Sebastian...Wait a minute!" Nagi looked around for the men and the car but noticed they were alone on the sidewalk. "W-What happened?"

"I just simply followed your orders My Lady, as you did tell me to rescue you."

"Yes I remember...But...I don't remember anything after that."

"Yes well...Considering your age My Lady, I knew that such a scene would not be suitable. So I simply let you fall into sleep while I took care of the men who had tried to harem you."

"I-I see...Well thank you Sebastian..."

"Think nothing of it My Lady...However you should conserve your energy, you have a busy day tomorrow as you are set to have lunch with Lady Isumi ,though knowing her she will most likely get lost and I shall have to retrieve her. Then after that you are set to play with Lady Sakura until around five o'clock, in which I will then prepare supper as you write your manga for a hour before playing your games until it's time to get ready to retire around nine."

Nagi just stared at Sebastian throughout his entire speech and kept quiet for another minute before opening her mouth "H-...How do you know all that...?"

Sebastian looked her before giving a small smile "Why because I am your butler My Lady, it's my duty to make sure you not only stay on schedule, but also make sure all your needs are met."

Nagi just kept staring at Sebastian before opening her mouth again "But-"

"We're here." Sebastian interrupted Nagi who just looked at him.

"Where?"

"Why...The Sanzenin household of course." Nagi looked at the mansion in front of them and indeed it was her home.

"How...Did you know where I live...?"

"Like I said My Lady, I am your butler. It's my job to make sure everything in your life is done to perfection." Nagi just kept staring at the house before turning back to face Sebastian who simply smiled at her.

"Sebastian...My Butler..." Nagi muttered those words before she wrapped her arms around his neck "T-Thank you...I-I thought I was done for..."

Sebastian simply chuckled as he patted Nagi's back "Think nothing of it My Lady, I am simply doing what any good butler should do in such a dire situation."

Nagi just nodded as Sebastian walked through the gate and towards the house.

Sebastian arrived at the door and lowered his hand to open it before the door suddenly flung open "Nagi is that-...W-Who are you?"

A woman in a maid outfit quickly opened the door before stepping back as she noticed Sebastian "Excuse the late arrival Maria, Milady ran into a problem which caused her delay."

Sebastian gave a smile to Maria who just kept staring in horror at the man "How...How do you know who I am...And...Why do you have Nagi!"

Maria positioned herself for an attack before Nagi lifted her head and glared at Maria "Stand down Maria! This...This is Sebastian..."

Maria lowered her guard at Nagi's words "S-Sebastian...?"

"Yes he's...He's my new butler!" Maria kept staring at Nagi before raising her eyebrow.

"Uh...New Butler...?" Nagi looked down before nodding as she pushed herself off of Sebastian who easily let her slip out of his arms as she ran over and grabbed Maria and dragged her back some.

"He...Saved me from some kidnappers, and promised to become my new butler...In exchange for..."

"Uh...Exchange for...?"

"...In exchange for my life..." Nagi blushed at the words as she stared down at the ground.

"Your...life...What does that mean?"

"Obviously..." Nagi kept looking down at the ground before looking back up with a tomato red face "...It means he wants to marry me!"

Maria just gave a deadpanned look at Nagi before answering "Uh...Marriage?"

Nagi got even redder as she furiously moved her head up and down "Of course! What else could he mean!...And...I did accept after all..."

Maria just kept staring at Nagi before sighing "Uh...Right...Well she seems to like him, and he is quite attractive, I don't think I've ever seen someone like him."

Maria looked back at Sebastian who was staring at the two with a smile, though when she looked, she looked right into his eyes causing her to blush and look back.

"W-What was that? Why...Did my heart thump when I looked in his eyes? I...Must be tired..." Maria shook her head before she looked back at Nagi "A-Anyway...You should head to bed Lady Nagi while I introduce Sebastian to Klaus..."

Nagi looked at Maria before giving a small puffy face as she looked back at Sebastian "Uh...I can accompany Sebastian to Klaus room..."

Maria was about to speak but was beaten to the punch by Sebastian "I'm sorry My Lady but like I said earlier, you have a very busy day tomorrow. It would be best to listen to Maria's advice and head to bed."

Nagi opened her mouth to speak but quickly closed it as she looked back down "...Alright...But...Can you check up on me during the night? I...I hate the dark..."

"Now now Lady Nagi, I'm sure Sebastian needs to sleep-"

"Of course My Lady." Sebastian interrupted Maria causing her to look back at him in surprise "It is a Butler's duty to make sure his mistress is always satisfied, and if all you require is to make sure you are sleeping well, then I can easily do that."

Nagi looked up at Sebastian and blushed even more as she nodded before running up to Sebastian and hugging him before turning back around "T-Thank you...Good night..."

"Good night My Lady." Sebastian gave a smile as Nagi walked up the stairs and to her room.

"W-Well...I'll walk Nagi to her room before showing you to Klaus's room." Maria turned to leave when Sebastian spoke up.

"No need Maria, I can easily find the head butler's room...You can retire for the night since I know My lady doesn't like sleeping alone." Maria just kept looking at Sebastian before opening her mouth.

"Uh...But..." Sebastian gave a look to Maria who closed her mouth "A-Alright but...Just return to the entrance here and rest until the morning if you get lost."

"Of course, good night Maria."

"Uh yes...Goodnight..." Maria left to go to Nagi's room but kept looking back to Sebastian, once she had left Sebastian began moving towards Klaus room.

"Now...The head butler should still be awake at this point...Though he does nothing anyway so I'm sure I could work here for quite a while without him knowing." Sebastian chuckled to himself as he kept walking down the hall.

"So you see , I believe it would be in your best interest to honor Lady Nagi's request and allow me to work here." Sebastian gave a small smile with his eyes closed as Klaus looked back at Sebastian with some sweat drops running down his head.

"U-Uh yes well...I suppose...We have been needing a new Butler...B-But You're still going have to pass a test." Klaus didn't sound convincing at all as he spoke the words but Sebastian paid him no mind.

"Of course, for I would not be a worthy butler if I cannot pass a simple test." Sebastian kept his smile which made Klaus even more nervous.

"W-Well...I want you to have this house spotless by tomorrow morning,all the dishes washed, all the clothes washed and dried, everything dusted, swept and mopped! All the while not waking Lady Nagi or Maria. You will also be required to make sure Lady Nagi's day tomorrow is perfect, do I make myself clear?"

Klaus tried to sound as confident as possible but shrunk back as Sebastian slammed his hand on the desk and leaned forward making Klaus burst out into sweat "...Crystal."

Sebastian gave another smile and turned to leave but stopped at the doorway and turned back around.

"I will also have breakfast ready tomorrow morning so please be in the dining hall by nine in the morning." Sebastian left after speaking leaving Klaus all by himself.

"Uh...Right..." Klaus kept staring at the door before relaxing in his chair "...What kind of man am I dealing with?"

A/N: Well that was a bit more serious than I wanted but I hoped it at least got you interested in the story! I actually had a lot of fun writing this even if it was just a setup chapter and nothing more!