So hello guys! I'm in love with the Ao no exorcist and it's characters (almost all of them) so I decided to write a fanfiction on it. This will follow the plot line with some additional and original fillers. If you have any doubts about my oc's feel free to ask ( I won't answer everything cause there're somethings that are suppose to be a secret shhhhhh)

I don't own Ao no Exorcist, Kazue Kato does. But I am hidding Mephisto on my closet for the moment *whistle*

Prologue

On the outskirts of Kyoto there was an enormous mansion surrounded by a thick forest and a big lake to the East of the propriety. In this mansion lived a young girl of 16 alongside another girl about her age and a man in his 30's.

The girl was standing on the second floor of a massive library, hundreds if not thousands of books covered the huge shelves. The girl had her silver hair up in a ponytail with a few bangs over her deep blue eyes, she was wearing a simple red tank top and some old jeans ripped in the knees. The sound of her flip flops was the only thing that could be heard around the library.

"Zira, uncle is calling us." A girl about the same age and height entered the library, she had her golden hair lose reaching her mid back her brown eyes scanned the room until she found the characteristic silver hair up in the second floor. She crossed her arms under her chest over her sky blue shirt when Zira didn't answered soon she began tapping her foot on the Persian yellow carpet that covered the hole room after a few more minutes she completely gave up and left the room.

"Yeah yeah Claire I'll be there…" When Zira turned around all she was able to see was the point of the pale green skirt of her friend has she left the room.

"Jeez she was in a hurry…"Sighing Zira placed back the book she had been holding. She quickly went downstairs and the first thing that hit her was the godly smell of homemade biscuits, her uncle's biscuits!

Zira dashed to the kitchen, it was of course huge like the rest of the mansion there was a huge metal kitchen counter in the middle of the room, a big oven two fridge's and countless cabinets and at least two sinks. In one of the corners of the big counter was a plate with lots of biscuits with chocolate bits, upon seeing that Zira couldn't do anything but drool.

"Please my dearest niece don't get the floor dirty." Zira's uncle said while closing the fridge with a carton of milk in his hand. This man was probably in his late 20's early 30's he had dirty and spiky blond hair with amber eyes he was tall standing at 6'2 he towered highly over both girls has they stood at 5'6 each. He was thin but muscular and very handsome he was wearing a red skinny shirt without sleeves and with a long neck and some jeans and a baby blue apron.

"So let me guess he forgot to do us dinner right?" Zira got a seat on the counter next to Claire who started to giggle, Klaus, her uncle never did biscuits unless he had forgotten to do dinner.

"Well you see I was…hm…" Klaus started to rub his neck nervously to each both girls started to laugh.

"Don't worry uncle it's ok, if we get hungry I can do something." Claire looked at Klaus with a kind smile while she dipped a cookie on her milk.

"See the lass over here as everything under control." Zira was eating the cookies like there was no tomorrow, her light British accent was almost imperceptible.

"Well girl's I called you both here to talk about a little subject called school." Klaus took of the apron and placed it on the counter and grabbed a cookie.

"You've been going to a public school in Kyoto and all of that but I think it's time you girls get a new background. What I mean is that you'll be attending an academy from now on, True Cross Academy in Tokyo." Klaus waited to see their reactions, Claire was a bit surprised and Zira was looking seriously at her uncle.

"So we're finally going to start exorcism school…" Claire looked sideways at her best friend, ever since her mother had told her about her past Zira had always wanted to be like her, an exorcist and that feeling only got stronger when she lost her mother during an attack to her house back at New York. She had started to study exorcism with her mother when she was ten since that time she learn basic things about demons, some fighting tactics and how to wield a blade and how to shoot.

"Yes but True Cross Academy also as normal classes so don't get all exited you also have to attend normal school…" Before that information Zira dropped her head to the counter muttering something like 'too good to be true'.

"Anyway I suggest you pack your things today, because you'll be leaving tomorrow, the Headmaster of the Academy will come here to pick you both up and explain you how things go around there." Both girls got up from the counter and left the kitchen to get their bags ready.

"3…2…1…" Klaus grabbed the plate with the cookies and extended it towards the door form there came Zira with a sly smile on her lips.

"Just for the trip." She grabbed two cookies and quickly disappeared from the kitchen leaving her uncle alone with a smile on his lips.

Zira climbed up to the second floor of the mansion there were two big corridors each one filled with numerous doors, she took the left one and walked down the corridor to the last door, her room.

The room was big sure but it looked a bit empty the king sized bed was on the middle of the room, there was a big wardrobe tailed in a fine wood and full of elaborated wood carvings, much like the bed, there was a big window that overlooked the front garden and a desk with a few books, mangas and comics and her laptop. Zira opened her wardrobe and started to take out her clothes and stuff them inside her suitcase next was her books and her laptop and on top of everything was her pocket book one she praised much, it's was 5 inches bigger than her hand with a dark green leather. This was a very especial book for it contained important information on angels, demons and other things related but it was written so only an angel could read it, this means that it was written in enochian the angel's language.

You see Zira is a special kid she was born a Nephilim, half human half angel and during the last two years she had been living with her 'uncle' she has been learning enochian from him, because Klaus was once an angel who fell from grace by his own motives that he never mentioned to anyone.

"Might as well go to bed." Zira took of her clothes and tossed them to a corner of her room and grabbed a pair of red boxers and a black AC/DC t-shirt and went to bed.

Claire caught her hair in a side ponytail, leaving it brushing against her left shoulder, she was dressed in a plain blue shirt with darker blue flowers on the hem and pink shorts and flat red shoes. She quickly grabbed her suitcase and went downstairs to meet her uncle in the kitchen.

"Good morning Claire!" Klaus chirped happily much like a bird. Claire no longer thought those 'greetings' odd, ever since she discovered that caffeine had that effect on him.

"Morning uncle." The blond girl smiled while pouring herself some coffee, and grabbing a toast.

"Hey where's Zira?" Claire looked at Klaus with a 'Are-you-seriously-asking-that?' to which the man gave a sheepish smile.

Upstairs Zira was still in bed, grabbing a pillow like it was a stuffed animal, the covers where all over the place and so was her silver hair.

Her phone started to vibrate making quite a big noise, the girl groaned while rubbing her eyes and hesitantly reached for the damn object and flipped it open to answer the call.

"Yeah...?" Her voice sounded hoarse and sleepy. On the other end of the call she could hear small giggles and then all of the sudden...

"GET YOUR LAZY ASS OF BED!" Klaus booming voice pierced her ears. Due to the surprise of the scream Zira dropped her phone and ended up falling from the bed.

"Stupid rich prick..." She said while rubbing her head, she hated when Klaus did that, call her because he was on some other division of the mansion and was too lazy to go to her.

Both Klaus and Claire started to laugh hole heartily when they heard a loud thump coming from Zira's room. Soon after a very pissed Zira entered the kitchen, Claire and Klaus started to snicker at her morning appearance but stopped it as Zira glared at them.

"Ok so are you girls ready to leave?" Both teens nodded towards their uncle. Claire got up from the counter and placed her cup and plate in the dishwasher, while Zira poured a bit of milk on her coffee and two big cubes of sugar and nibbled on her toast.

"Well I'll miss you..." Zira scoffed at his statement which cause Klaus eye to twitch.

"As I was saying I'll miss you two, but do not worry I'll call from time to time and we can talk online!" Zira and Claire sweat dropped at his 'hero' pose.

"By the way Zira, don't forget. You mustn't use the Lights power it's dangerous and it will consume you." Zira nodded without even looking at her uncle. She knew the risks of using the Light, since she was not old enough to handle it's full power and force, and because she was half human it could be very dangerous to abuse of that power.

After breakfast Zira headed to her room to have a bath and get dressed. She putted on a grey plain t-shirt and a pair of old jeans and her red snickers. She grabbed her suitcase and took it to the living home, there standing next to her uncle was a very weird man. He had a tall white hat with pink and purple around the base, purple gloves and tie, a white suit-shirt, jester like pants and pointy shoes.

'What the Hell? Did I fell down a hole? That guy looks like the Mad-Hatter from Alice in Wonderland!' Zira reluctantly approached the group with a raised eyebrow.

"Let me introduce myself I am Mephisto Pheles, headmaster of True Cross Academy!" He happily said as he took of his hat and bowed. Zira gave a funny look at Claire who merely shrugged.

"Well guess this is it...Oh came here you two!" Before the girls could do anything Klaus hugged them while crying things like 'I'll miss you' or 'Don't leave me alone'. Claire and Zira exchanged a look and role their eyes at the man's behavior.

"Come we should move along there is a plane to catch, don't worry they will be safe at the Academy!" Mephisto assured a sniffing Klaus as he opened the door so both girls could pass.

There was a car waiting outside for them, more specifically a black limo (the pink one is in Tokyo, unfortunately) the three of them got inside, while the driver was packing the bags Mephisto took the liberty of telling them that is public name was Johann Faust V, that cram school would start in two days and that both of them would join on the second day because of the trip, and he gave them their uniforms.

"I'm not wearing that." Zira stated has soon has she saw the pink skirt and before Mephisto could say anything she threw it at his head.

"...Hm fine. But you have to wear at least one school garment." Mephisto was going to protest and say she had to wear the skirt but her death glare made him think twice.

"So...What do you say? Ready to go to True Cross?" Claire tried to change subject.

"To start on exorcism, Hell yeah...normal school not so much." Zira got comfortable in her sit. This was going to be one Hell of an adventure.

And here it is my first fanfiction on Ao no Exorcist!

Hope you like it, I'm trying hard on this one. For now I'll leave it as a friendship fic but I was thinking about paring Zira with Yukio...,What do you think?

Now review with your opinion on this story and please really do tell me if I should pair Zira with Yukio this is bugging me to no end!

If you don't review I will go to your house and exorcise the demon inside of you who is stopping you from reviewing ( not really but that would be fun eheheh)