Moon arts online.

Disclaimer :I don't own Sao, fate series nor Harry Potter.

An:this new story is a three way crossover between fate series Sao and Harry Potter.. The Harry Potter connection will occur later in the story.

Chapter 1.

It was a bright day in the middle of April , The cherry blossoms created a shade from the merciless heat of the scorch of the sun. The roads of Tokyo were clean and pristine, even more so in the Saitama prefecture. The cars were not many, as the Japan took pride in their punctual public transport.

Under the trees, a group of girls were walking, all clothed in a matching uniforms, and were chatting animatedly.

Arriving to a fork, most of the girls moved to one side while one girl went to the other side, her school bag in her hand, she bade them a good day before continuing on her way home.

The twelve years old Suguha Kirigaya walked briskly, her short black hair reflecting the light, her mind focused on the weird student who transfered to her class. The boy was european, his pale complextion and blonde hair more than a testament to his origin.

Coming close to her house the girl paused, the house was a spacious old style Japanese building which was made of two parts, one being the residential area while the other was the dojo in which she and her brother Kazuto were training under her grandfather.

The girls green eyes locked on a irregular person who was standing in front of their door and speaking with her mother. The man had a pale face, with bright brown hair and his red suit, the man was definitely not from around here.

Curious Sugu moved closer, making sure not to be seen as she moved toward the shadow not far from the entrance.

" Midori... That's not a joking matter... He has the right to know" the man spoke in Japanese with a heavy German accent.

" Gustav.. I understand your point but I will not involve him in this... He should just live his life... In any case that's not the best place to talk about it.. Come in and we can talk" she spoke sternly, and her voice was bordered with anger.

Sugu felt confusion mount inside of her.. What can they be talking about? It sounded mysterious and she felt her curiosity spike.

The man shook his head "I am sorry Midori... But I don't have the time... You can do whatever you understand but let me at least tell you the reason it's urgent" the man who answered to the name Gustav spoke in haste, his eyes darting around and Sugu could easily identify fear their.

" The reason is... The Ainsworth are planning to have it here soon... And he as well as her may be in danger... After all their parantege..." he finished briskly.

Midori - a woman with short black hair tyed back in bun - eyes grew wide " Gustav.. You can't mean that" she said quietly, fear and anger evident in her voice.

Sugu's confusion to just grow with the moment... A mysterious something that put the two adults into mild panic.. And the name they said Ainsworth... Her braw furrowed.

" I am afraid so... They are sending their son... Arthur ... He is an average one and one of the most talented in their family... I am not sure for the reason they start it now.. " the man wanted to continue, only for Suguha to come out of her hiding as she couldn't hold her excitement any longer.

" Arthur ? Ainsworth Arthur ? "she asked" He is already here... He transfered into my class today " she said casually as she came from the shadows making the two adults jump in surprise.

" Sugu! " her mother called her" You were listening to our conversation? "she asked sternly.

The girl shamefully bowed her head down.

But Gustav on the other hand suddenly paled, his brown eyes winding up and turning to the woman he spoke hurriedly" Midori.. It's your choice what to do.. I have overstayed my welcome " he said and after bowing he walked away fast.

Sugu looked at her mother with confusion, which her mother didn't satisfied instead urging her thorough the door, and no matter how she tried to prompt her she didn't give her any answer,instead the older woman walked into her room and shoot the door close.

The black haired girl was left standing in the hallway, confused and afraid, her mind couldn't give her any good explanation for what happened.. And what does the new transfer student had to do with all of this.

It took her several more minutes to finally move away toward her room, as she had much homework, but even while working on it, her mind never stooped thinking of the mystery.

Xxxxxxxxxxx

On the next morning, as the two siblings set near the table eating breakfast, the door of the master bedroom opened suddenly and to the surprise of the two, their mother came out.

It was a real shock for them, for the woman had to leave to work early, thus never being there in the mornings.

But what caught them off guard even more was Midoris state. Her hair was disheveled and her eyes were red, but on the other hand they were burning with determination.

Slowly the woman approached the two children and as she spoke her voice was curt and steely " Kazuto.. Suguha.. There is something important which I must discuss with you two" the woman spoke slowly, her eyes bore down on the two.

"Mother? Is everything alright?" Suguha asked her mother, even while her heart told her it had something to do with the man from yesterday.

" Listen closely you two... This is important information.. And nothing will leave this home... What I am going to tell you is very classified " and with this words the woman moved her hand forward her eyes narrowed in consternation as a small flame appeared and danced on her palm.

The two children looked wide eyed, their mouths hung open" W-what? How? " the two gaped.

The woman smiled as the flame disappeared" This is nothing special... For magic is real... As in the creation of miracles and mysteries "she said, looking at the baffled look of her two children.

" Which brings us to another topic which I wanted to discuss, for the meaning of magic and why I never told you I will explain later.. But what more important is the fact about your parents Kazuto".

The boy nodded, she informed him about him being her nephew after he found out most of the information by himself.

Unfortunately the younger girl didn't take it in a stride.

" What?" she asked dumbly, her eyes growing wide as she tried to wrap her head around it all.

" I am sorry Sugu... But yes the truth is that Kazuto isn't your blood brother" Midori spoke with a broken voice " His parents.. my sister Aoi and my brother in law Yukito " her eyes filled with tears " Who died in a car accident all those years ago" her voice finally broke, and she covered her eyes with her hand.

The young girl set there dumbfounded, not only did she just see something as absurd as magic! But apparently her brother wasn't her brother at all but her cousin.

The boy narrowed his eyes " Mother" he said quietly " Why are you telling us that now? What does it has to do with.. This" he asked, fear in his eyes.

The woman nodded slowly, as she took control of her voice " Yes.. Yes you are right, I am sorry I got distracted" she said " I told you already Kazuto... That your parents died in a car accident.. But it isn't the whole truth..." she saw the boy's face change with surprise " Our families.. The Kirigaya and Narusaka are old Magi families... Your parents... They were killed because of this... Murdered by those who think they are above us... " her voice was full of anger as she spoke of their death.

" M-murderd?" the black haired boy shock was visible, as he stuttered" By who? ".

" Was is by the Ainsworth? " Sugu, who finally came out of her shock asked, as she remembered the conversation from yesterday.

Midori visibly shuddered" No! "she called" Never... There are barely any Magi in the world... The Ainsworth would never just kill another Magi without a reason... No they were killed by another group... A group who hates us Magi... People who believe they are above us all... They striked when we weren't ready.. We thought we hidden ourselves well.. But we were wrong " she said quietly" I will not tell you yet who it was.. You are not ready at all to face any of them... But you should know that the Ainsworth used the grail war once before to stop the degradation. They made sure the world will survive ".

Kazuto was furious, and it was visible in every fiber of his being" Then why are you telling us this all? Why now? Not even talking about the point that I still can't wrap my mind around the idea of magic being real " his voice was dark and cold, and the girls didn't blame him... It was a heavy blow to the boy.

" I told you that.. Because soon there will be a ritual here... An ancient ritual known as the holy grail war... I will explain the details later but I was informed about it yesterday... I didn't want to involve you in this.. But I have no choice, if you will be chosen as masters you will have to participate.. And you need to be prepared " she said, waiting to see the two children reaction.

" I will learn then " Kazuto spoke" And one day you will tell me who is responsible? " he asked.

She nodded slowly.

" Then I am in... When do we start? " he asked, his eyes burning with determination.

Sugu took a deep breath" I will too.. Please mother.. Teach us about Magic " she said.

The woman nodded again slowly" Very well.. But you have to listen to my instructions... Thaumaturgy is dangerous without the right instructions.. You can easily cripple or even kill yourself... Am I clear " she asked, as her old persona resurfaced, the east magus Kirigaya Midori.

The two nodded in agreement, their minds ready for anything... They will learn the truth.

" Very well... Follow me " she said as she stood up and walked out of the room, the two hot on her hills.

Xxxxxxxxxx

Suguha looked around, her eyes big as saucers. The room they were in was large, and had the most weird tools all around it. Different symbols were written around and a huge library was standing in a huge room.

She couldn't belive it was all real... And that all of this was under their dojo. Her mind wandered to her shock as they walked into the dojo and her mother moved toward one of the walls, her hand touched it which made a pentagram to appear and for a hidden door to reveal itself.

Her brother didn't look any better, his eyes tried to see everything at once, his amazement was obvious to any onlooker though there was none here.

Her mother turned to the two of them, her eyes dark " Seat down... I will explain everything to the two of you now... About the moonlit world and about magi... Listen closely for I do not want to repeat myself." her gaze bore into the two of them.

" Thaumaturgy, or the ability to make miracles and mysteries is what the magic of us magi is called. It's power is wondrous but dangerous.. The saying goes :Being a magus means to walk in toe with death. There is a wide margin of error possible which can bring to death so you should be careful and until you will become more experienced you will not do any thaumaturgy without supervision. " the woman took a deep breath before she continued" Magic has many branches and usually people focus on one particular field as is prominent by many families. For an example our family the Kirigaya are known for our jewelry magic, as we use gems as a focus, your family Kazuto were renowned for their combat applications and mostly focused on elemenatal research and some spiritual invocation, while the Ainsworth focus on a branch of alchemy known as flash air. Now for the understanding of how thaumaturgy works.. Magic is derived from the magic circuit which although manifesting as a physical form which looks like a nerve system is anything but. The circuits are part of the soul and the energy which moves through them is what gives us life, we learnd to converse the energy to make miracles. But regular humans do not possess circuits, so only few outsiders have been born with the ability and are considered mutation.. What I am going to teach you today is how to open your circuits.. I want you to listen closely.. It's important for you to understand ".

The two nodded affirmatively and she continued.

" To activate your circuits you need to move prana through them for which you will need a mental trigger, one of the most commonly used triggers are like water running through pipes.. Imagine your circuits are pipes and your prana as water, you have to open the pipes so the water can ran through... Or you can use any other mental image which make it easier for you " she finished her explanation" Well then... You may start " she said curtly as she moved to the side, her eyes not leaving the two for a moment.

Suguha closed her eyes and drew up the image before her. Before her eyes she saw a scabbard, a beautiful scabbard of a katana, on its surface numerous lines were drawn. Near the scabbard was a beautiful blade, the katana was shining in the light and it looked as if the blade itself glowed, and with a delicate motion she moved the blade in, and as the blade entered the scabbard, the light suddenly moved to from the metal to the scabbard and the light started to fill the lines, and then she felt it. The soft movement of the energy, like a light bathing her, as if the sun was carrasing her gently.

Kazuto on the other hand, had a whole different mental image. Wiers were lying discarded and disconnected, all connected to what looked like a charger head. Kazuto furrowed his braw as he willed the charger head to connect to the plug, and as it did the electricity moved through it, sending jolts through the boy's body.

"Very well" Midori spoke to the two " You did well.. Whatever you saw were your circuits... And that's will be enough for today... You will train with me every day from now on..." she sighed deeply " Come on... We shouldn't linger here any longer".

As they walked out, the two new magi nearly jumped out of their skin as the door magically sealed itself back.

Xxxxxxxxxxx

In a spacious room, a blonde boy was seated in front of a computer, his eyes locked on the screen as he talked to the other person " If that is your wish.. I will contact them tomorrow.. But one way or another we will get what we want.. The grail is just a boon" he spoke, the man on the other side answered and the boy nodded " Of course father... It shell be done..." he said as the video call disconnected.

The boy slowly stood up " I have much work to do" he said quietly, a smile on his face.

End of chapter 1.