Hello viewers, epic gamer 484 here and welcome to the first chapter of my new fanfic Circuit network which was inspired by this brilliant fic that is unfortunately on Hiatus called Nerve damage by CrossyCross, in which an AU Shirou Emiya manages to make the nerve circuits he creates every time he needs to perform magic permanent, giving him a almost broken level of prana output beaten only by Illyasviel von Einsbern, and Heavens feel Sakura.

Now the reason I am doing this instead of Fate/keyblade of wind is that I unfortunately lost interest for a while and decided to try something different in order get my creative juices going again, so for now consider that Fic on Haitus until I decide to go at it again.

Disclaimer: I do not own the characters associated with fate/stay night, they are property of Type-moon, besides if I did own them I would make Shirou less whiny and more badass.

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Circuit Network chapter 1

Shirou Emiya, son of Kiritsugu Emiya, a 12-year-old middle school student, and the unofficial 6th head of the Emiya household, as well as a magus-in-training was at a loss.

Which was understandable as he just lost his adoptive father to an unexplained illness a few months ago before promising him under the full moon that he would become a hero of justice that could save everyone, like those featured in American comic books and Henshin TV shows, but the biggest problem he currently faced was that he currently didn't have the skills or the physical abilities to accomplish such a feat, which was why he was currently sitting in the tool shed on the compound that served as his workshop, for which he could practice his half baked mage-craft that his father taught him and maybe brainstorm a way to acquire the skills necessary to become a superhero.

The story of how Shirou was sitting in his shed sprouting out nonsense about wanting to become a hero of justice could be traced back 5 years ago during the Fuyuki city fire that burned away not only Shirou's home and parents, but also any memories from before that fateful day and would had perished in the fire as well had Kiritsugu not saved him from death and rushed him to hospital to get treated, the next thing Shirou remembered was Shirou waking up in a hospital bed covered in bandages, he then saw a black haired man with lifeless eyes walk into the room and greeted him "hello there, how are you feeling?"

At this question the miraculously healed boy weakly replied, "I'm fine thank you…but where am I old man I?" to which the older gentleman chuckled back "old man? Yes I guess I do seem to have aged a bit, and to answer your question you are in the hospital"

This had surprised the young boy as he asked the black haired man why he was here in the first place.

At his question the older gentleman's turned sour as he said in sadness " there was a big fire where you lived that took the lives of over 500 people, only a few dozen survivors were spared, including yourself."

This had saddened the injured boy as he thought about the countless innocents that were lost in that single night, at which point the mysterious man continued "since you were the only one to make it out of your home alive I'm afraid you only have two options available to you."

He the walked closer to Shirou's bed and held up two fingers to empathise his point "you will either be sent to the local orphanage and wait to get adopted" he then put on a weak smile and continued "or you can go with this mysterious stranger whom you've just met and live with me"

After hearing what he had to say the red head contemplated his options, just like what the man said his home and family was destroyed in the fire, and he had no idea if he had any relatives or not, which means that he would become a ward of the state and get sent to an orphanage until he's lucky enough to get adopted, on the other hand he could go with this complete stranger who he never met before in his life.

Actually that wasn't completely true as he remembered a scene during the fire that was imprinted into his memory, this was when his legs finally gave way after waking through the wasteland and had resigned to his fate as he began to lose consciousness, however during the decent into darkness a voice called out to him to live and not die, as he opened his eyes he was greeted with the sight of the black haired man looking down on him with tears in his eyes, however they weren't ordinary tears as they were ones of joy at the fact that boy was still alive, it was at that moment that Shirou had only one thing on his mind.

"I wish I could be that happy"

With the newly acquired knowledge that the person in front of him was the one who saved him from the fire, the young redhead's mind was set "okay I'll go with you Old man"

"Call me Kiritsugu, Emiya Kiritsugu" the identified man said as he smiled and was about to walk away before saying "oh by the way,I have something to tell you….I'm a Magi"

From then on the boy named Shirou became an Emiya and after he was well enough to be discharged from the hospital he went with his new father to an old rundown compound in the residential area of Fuyuki.

Of course for them to even begin to live in the house they needed to renovate it in order to make it habitable again, so Kiritsugu hired a construction crew to fix the place up while Shirou did what he could to help out by carrying boxes around. Once that was done they began living together as a family that also came with a few oddities along the way.

First was that Kiritsugu would leave for months on end without telling Shirou where he goes, leaving the 7-8 year old to watch the house while Taiga Fujimura, the granddaughter of one of their neighbours visits from time to time. The second oddity was that Kiritsugu Emiya was a terrible cook as in the catch water on fire and use coffee to make burgers kind of terrible, so Shirou was to learn how to cook lest they rely on takeout every-time and he was pretty damn good at it too.

The third and final oddity was that the previously mentioned Taiga would come round every night unannounced and stay for dinner, this had suspiciously started around the same time Shirou learned how to cook, of course the kid didn't mind as he considered the brown haired teen family.

Despite this Shirou could honestly say that those were the happiest days of his life, however he also felt that something was missing and so after a few months he came to a decision.

"Can you please teach me mage-craft?" Shirou asked his father every now and again to agree to teach him the magical arts of Thaumaturgy however every time he asked his answer was always the same.

"No" said the eldest Emiya.

This routine had continued for two years because of the stubbornness of both father and son until Kiritsugu Emiya decided to cave in and finally agree to teach Shirou Mage-craft.

The first thing he taught him was the step's on how to 'open' a person's circuits in order to gather the prana needed to perform Thaumaturgy, however because Kiritsugu was such a bad teacher the young magus-in-training misinterpreted what his father was trying to say and thought that mages needed to create new circuits every time they needed to perform mage-craft, he then decided to try out his horribly wrong way of opening ones circuits and proceeded to convert a part of his nerves into a make-shift magic circuit, which is akin to shoving a hot metal rod through your spine, and his father was non the wiser.

The second bit of magic his father taught him was Structural Analysis, an ability shared by magi that lets them scan an object for information about the components that make up its construction, this was an ability that Shirou had skill in as he was able to correctly guess the components of a specific object he could get his hands on, from bits of junk in the shed, to appliances in the kitchen, and even junk that Fujimura Taiga brings round every once in a while, however to most standard magi this ability was considered useless but Kiritsugu told him that most mages overlook certain useful abilities due to their arrogance and told his son not to get disheartened by the stereotype that mages seem to employ and continue to practice Structural Analysis.

The third thaumaturgy technique Kiritsugu taught him was Projection magic, which involved shaping a person's prana into a specific shape or form, however projection was an incomplete art and was considered useless to modern magi as the projected object only lasted a few minutes and had the durability of toffee, the reason magi even have this technique is because beginners of the craft use this art in order to practice shaping their prana in preparation for more complex arts, plus the fact that projection is mostly used to create disposable ritual items.

What Kiritsugu failed to notice at the time was that Shirou didn't have a full understanding on how projection worked, and so the young boy thought that you needed to know what the object you were trying to make was composed off, and so he devised step-by-step instructions on the construction of a projected object based on information he was able to gleam from the original using Structual analysis.

These steps included:

Judging the concept of creation

Hypothesizing the basic structure

Duplicating the composition material

Imitating the skill of its making

Sympathizing with the experience of its growth

Reproducing the accumulated years

Excelling every manufacturing process

With these extra steps it was possible to create stable replicas that could exist from hours, to days, and even months based on the 'weight' of its existence, of course Shirou being the clueless idiot that he was didn't realise this fact, and it would be years before he fully understood what he had accidentally achieved.

The final bit of Thaumaturgy that Kiritsugu taught Shirou was the art of Reinforcement, which involved filling the holes in an object's structure or 'existence' in order to both strengthen it, this requires a keen insight about the targets structure as the object would be considered 'complete' and so any mistakes would instead result in the object treating the foreign prana as poison resulting in the object or person receiving damage, it is a difficult field of Thurmaturgy and is therefore overlooked by magi who pursue easier forms of mage-craft that deliver the same effects at a lower risk. However if a mage were to succeed in reinforcing an object or oneself then they could gain a number of benefits, for example strengthening an objects 'existence' can result in a knife becoming sharper, food and drink becoming tastier, or the speakers of a stereo able to play louder music, on the other hand improving the targets structure grants increased strength and durability, for example if a mage were to reinforce their own body they would be able to run faster, become stronger, and have increased durability.

Of course being the difficult art that it was Shirou had some difficulty with reinforcement due to the frailness of his fake circuits, and had a 50% success rate, which was considered an improvement when he first started.

Thus the adopted son of Kiritsugu continued with his pathetic thaumaturgy skills until that fateful day under the night sky where Shirou had one last talk with his father before he passed away, leaving his son with an impossible dream and half-baked teachings in the mystic arts. This of course bring us up to speed as to why the two-time orphan was sitting in his tool shed going through the steps to create his make-shift circuit, which was so painful it was guaranteed to make a grown man scream in pain, as he felt the feeling of a hot metal rod roasting the inside of his spine he had a sudden idea in his pain-induced mind.

"What if there was a way to keep my circuit sustained without having to create it everything single time?" Shirou thought out loud as he succeeded in forming his newly created magic circuit from his nerves, the boy of course knew it was a crazy idea as his circuit degrades over time as he uses it meaning that he had to create it again every time he wanted to perform mage-craft, which was annoying as nobody wanted to feel a hot metal rod shoved down your spine every time you wanted to perform thaumaturgy and wondered if their was a way to keep his created circuit, which of course led to this crazy idea in the first place.

As he thought of a way to make his insane idea happen he remembered something from his late fathers old lessons about Reinforcement and at the skill could allow him to strengthen not only the structure of an object, but its existence as well.

Normally magic circuits are located in a persons soul, and the thing found in a magus body are the physical manifestations of these mystical converters, however the young Emiya's nerve circuit is made from cannibalising a part of Shirou's nervous system, meaning that that it is a physical presence in his body, and just like any other physical object in the world it can be reinforced.

Normally converting your nerves into circuits was considered crazy and suicidal by magi as it was considered a last resort if their normal circuits were burnt out, or they didn't have enough prana for a particular spell, so by that logic no one would dare try what Shirou was about to do as their basic survival instincts would kick in and prevent them from doing.

However Shirou Emiya was not a normal magus, as he didn't have a sense of self-presentation to begin with, besides there was one key thing he learnt from his Father about Magi in general.

"A magus is one who walks with Death" Kiritsugu's voice echoed in his sons head as he remembered this vital lesson "your enemy's may kill you, your experiments may kill you, even your own power could lead to your death, one mistake- one mishap and your Dead" he had empathisedthat last part to prove his point that Thaumaturgy was not something to play around with and was to be treated with the respect it deserved.

So by that logic, if a normal magus walks with death, then what Shirou was about to do would be akin to grabbing Death by the waist and dancing with her before sharing a passionate kiss under the moon-light.

Completely ridiculous and incredibly dangerous if you're not careful, but then again the young Emiya wasn't the smartest kid on the block.

"Well here goes nothing…wish me luck Dad" Shirou prayed as he concentrated on his created circuit by channelling od through the circuit on one end, and coming out the other end as prana, only to direct the converted energy back towards the circuit in order to reinforce its existence.

A Magic circuit is akin to a power plant that converts fossil fuels like oil and coal into electricity which is then sent along the power cables underground to power the various electrical appliances in the city, the circuit works the same way as it converts the outer source 'Mana' (the energy of the planet) or the inner source 'od' (the energy of the human body) into prana buy passing it through a magus magic circuits, and is then used by a mage as fuel to power their mysteries.

What shirou is doing his channelling the od in his body through is make-shift nerve circuit, and then redirecting that converted energy back through the circuit in order to reinforce its existence from the inside-out.

What happened next was unexpected as Shirou was welcomed to a world of Pain.

"AAAAAAAAARRRRRRRRGGGGGH" the young Emiya screamed as his entire body was assaulted with a feeling that could only be described as someone poured hot molten lava into his nerves as they felt like they were on fire.

"MUST…..KEEP…..GOING" the tortured red-head mentally shouted as he concentrated all his willpower to finish the job before he blacks out from the pain that would break a lesser man that wasn't named Emiya Shirou, as the prana inside Shirou forced one of his nerves to do something it was never designed to do the agonising pain strangely forced the Emiya's mind to become crystal clear as it devoted all of its processing power to finish what Shirou started.

This had carried on for 30 minutes, which seemed like an eternity to the Emiya who was in pain before he felt something click in his body before stopping the conversion process and collapsing on the hard stone floor of the tool shed with his clothes covered from head to toe in sweat.

As he lay there for what seemed like an eternity as his body celebrated the blissful release of its torture, the young Emiya finally got up some time later to view the results of his work, "Trace on" he whispered as he recited his personal Aria to trigger a spell of self hypnosis to prepare his mind for handling mysteries.

He then used Structural Analysis to examine his body and determine any changes that resulted from his work, what he found was the nerve-circuit he created less then an hour ago from one of his cannibalised nerves except there was something different about it.

When he first created the circuit, it was not as strong as it could have been as it could only generate 10 units of prana at a time and was very fragile like it was made of glass that could crack and shatter as more prana was forced through it, all-in-all it wouldn't have lasted long if it would erode and vanish over-time. Now though after going through that agonising process things were different, it still only produced 10 units at a time but it was more 'solid' then it once was, like the fragile glass was reinforced with liquid metal that hardened around it, holding it in place.

Basically it was like the previous circuit was an old bridge that could collapse at any moment, and the reinforcement procedure was akin to metal supports being added to it to keep it from collapsing.

After checking that everything was in order the young Emiya decided to test out his newly solidified circuit by seeing if it would last by waiting an hour as his normal nerve-circuits usually last about that long so he decided to go into the house to grab a midnight snack, as he was both thirsty and starving.

(One hour later)

After coming back from the kitchen munching on some leftover rice-cakes, the heir of Kiritsugu confirmed one of his suspicions, it had already been over an hour and his newly created nerve-circuit was still there in his body, Shirou would have celebrated then and there but their was something he needed to try first and proceeded to grab something to reinforce, which he found lying around was a glass cup from the kitchen, he then picked up the fragile object and proceeded to activate his aria.

"Trace on" he concentrated as he identified the gaps in the glass structure so that he could fill them with prana in order to strengthen the object as a whole, as he channelled the od in his body through his new circuit and converted it into prana he then inserted that new energy into the gaps of the glass as carefully as possible.

He then stopped when he was sure that he done enough and preceded to experiment with his new reinforced glass by throwing it against the nearest wall he could find.

As the glass cup impacted the solid concrete wall he was greeted with the sight of the glass not breaking into dozens of sharp pieces all over the floor, but instead saw it remain intact as it fell to the floor and roll towards him until it stopped at his feet.

Time seemed to stop as he processed what he just witnessed before lowering his head to the glass cup by his feet and slowly picked it up in order to get a closer look, there were a few cracks here and there but all in all it proved one simple fact.

Shirou Emiya, son of magus Kiritsugu Emiya, had just succeeded in reinforcement and was ecstatic, not wanting his first success at mage-craft go to his head, the magus-in-training decided to try other bits and pieces around the tool shed, from a old plank of wood and metal bar, to a few light bulbs and cooking appliances that were scattered around the floor.

The undeniable proof of successfully reinforced objects in front of him, the heir of Kiritsugu decided to let it all out and shouted "YEEESSSS" at the top of his lungs and pumped his fist into the air.

"I did it Dad I finally did it, with this I am well on my way to becoming a hero of justice just like you wanted to be" of course as he thought this their was one undeniable thing he had to find out first.

He needed to find out if he could do it again.

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(2 ½ years later)

It had been more than 2 years ago since that fateful day in his tool shed and Shirou Emiya had to admit that he made a fair bit of progress over these 2 years, he still was considered a third rate magus by standards alone, but he was exceptionally good at what he was good at.

For example after he successfully perfected structural reinforcement from practicing for a few months he decided to practice on reinforcing concepts next like improving the sharpness of a knife, the nourishment of food ingredients in order to make them tastier and last longer before going off. However as he continued with his mage-craft training he noticed that he eventually hit a wall in his learning due to the fact that Kiritsugu only taught the boy Structural analysis, Reinforcement, and projection, so he was forced to practice with what little he had.

At first he didn't mind as he was sure that he could be a hero with the skills he already had but there was still the longing to learn more, to ascend towards new heights and it was this frustration that lead towards his fourth skill that he discovered by accident due to his high amount of nerve circuits he created the past 2 years.

Ever since he created his first nerve circuit, he had proceeded to create a new one every night for 2 years and 6 months, meaning that the 365 circuits he made for one year was added to the 365 he created the next, add in the 182 circuits from the previous 6 months gave him a total of 912 nerve circuits, giving him OVER 9000 units of prana to use.

It was this large amount of prana that lead him to develop the skill he accidently discovered one Sunday night.

He had just come back from his part time job at Copenhagen, when he came back he immediately proceeded to the Dojo after having dinner with Fuji-nee, he decided to practice self-Reinforcement on a couple of mannequins he made for training purposes, he then proceeded to reinforce his body and rushed towards the targets wielding a shinai in hand hitting the left target 5 times on the right side, left side, left shoulder, right shoulder, followed with an overhead strike on the straw filled targets head.

This had lasted a total of 5 seconds, 3 to get to the mannequin and 2 to strike it 5 times.

This had frustrated the Emiya as it was the same time for the previous 10 training bouts with only a few milliseconds taken off or added to his previous times, this meant that he had reached the limit of his reinforcement skill due to his mage-craft training being incomplete.

His skill with the reinforcing arts was excellent but that was it, the skill required filling the gaps in a target that is already considered 'complete', pushing it any further without proper guidance would prove disastrous to the young teen if he did it wrong so he didn't advance any further then what he was capable off.

He needed something else, something that would allow him to break the metaphysical wall that surrounded his current abilities and grow stronger as a result, it was then that he remembered something that was written in his fathers old notes when he was searching through Kiritsugus old stuff one day, it was located on a small hand written journal that was a little burnt but was still readable and contained various bits and pieces of information such as knowledge on various mystic codes, Jewelcraft, magic circuits and their affects on the human body.

However it was something on page 35 that caught his attention

It was a personal note from his father about a certain swordswoman that he met a few years before his death but didn't write into detail about who she was or what she looked like, what he did write down was what she could do and how she responded to various situations, one of these skills of hers was a variant of Reinforcement called Prana Burst.

This incredibly dangerous yet effective skill required packing a part of the practitioner's body with prana like the arm or the forearm, and then instantly expelling the energy like a jetburst, based on this it is possible to launch the user with the thrust of a rocket, or deliver blows with the potency of a shotgun, Kiritsugu wrote in his notes that the original practitioner mainly used that this skill for defence and high speed movement.

He also wrote that she was one of only a handful of people who could use this skill safely due to the inhuman levels of Prana expelled in its use, however despite the heavy energy cost, it allowed the user to fight on even grounds with inhuman opponents due to possessing a physically weak body since birth.

It was at this flashback that Shirou realised something, the Prana Burst skill featured in Kiritsugu's journal required inhuman levels of prana, and Shirou could use a total of 9120 units of prana due to his circuits, he put the two facts together and decided he might as well try it out. With that he walked to the other side of the dojo opposite the mannequin on the right, he then proceeded to try out the skill by bending his knees with his right foot in front of his left and his shinai to his side.

"Trace on" he said as a golden web of interconnecting threads appeared in his minds eye and activated a fourth of the threads, converting the mana in the air into prana to be used by the red-headed magus, the reason he did this was because despite his impressive physique for someone his age, the fact remained was that he didn't have enough Od necessary to produce the amount of prana that he needed so instead he fell back to what his dad told him about the conversion process of od and mana to prana and drew in the mana around him in order to convert the ethereal substance into a form of energy that he could use.

He then concentrated the prana into his arms and legs, before reinforcing his limbs to contain the energy, before instantly expelling the energy as he proceeded to run, cracking the floorboards under his feet and sending him flying towards the target before releasing the energy from his arms as his shinai impacted the target and sending it flying towards the other side of the dojo, leaving a crack in the wall where the mannequin impacted.

Time seemed to stand still as the young Emiya waited for his brain to catch up so it could process what just happened, before when he was using normal reinforcement it had taken him a total of 5 seconds to reach the target and pummel it into submission. Now though, it had only taken him an instant to reach the target and only one strike from his weapon to completely destroy the mannequin if the mangled remains of the straw filled target was anything to go by.

And he had done it all in the span of 1.20 seconds, a new record.

Normally Shirou would be jumping for joy at his accomplishment but there were a few things about his experiment that he needed to take note off first, these included the fact that he was feeling extreme pain in his arms and legs but he had an immensely high pain tolerance so he could still move around, there was also the fact that the shinai he was using couldn't survive the recoil of his strike and split in half when he hit the target, this meant that if he was going to use Prana burst effectively then he needed to use stronger weapons overwise they would collapse from the recoil.

With that in mind he made a mental note to get weapons made of stronger materials like steel, but first he needed to clean up before fuji-nee came round.

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It had been a month since Shirou had successfully pulled off Prana burst and the son of Kiritsugu could honestly admit that the results from his training regimen paid off, before he could only keep the skill going for 5 minutes because his body wasn't used to handling that much Prana at once, but now after a month of physical conditioning he could now keep it up for between 20-30 minutes before he ran out of Mana to convert.

He also discovered that any swords or metal bars he got his hands on could endure the strain of his Prana burst skill as long as he reinforced it before hand, of course Shirou made sure not to use it during his spars with Fujimura Taiga as that would be cheating, of course he was tempted to use it once or twice just so that Taiga would stop rubbing her victory in his face every time he lost but a hero is above that right?

That's not to say he didn't use the skill for 'other' uses as he often traversed Fuyuki City at night in order to test just how fast he could go and how far he could jump from building to building, he may be a distorted goody two shoes who isn't the type to go out with friends but that doesn't mean he doesn't know how to have fun.

But that wasn't important right now as the morning rays shined through the tool shed that he slept in again after staying up late to work on his mage-craft, the red-head then decided to go back into the house in order to change out of his work clothes and into his middle school uniform before Fuji-nee came round for Breakfast.

With him washed and showered, he then changed into his uniform that was cleaned and left out to dry last night before heading to the kitchen in order to cook breakfast he decided to do something a little special since it was near the end of his semester and decided to cook some Japanese hamburgers for breakfast, he then wondered how Fujimura Taiga liked hers.

"Shirooou, I'm hungry" ah speak of the devil as the familiar voice of his sister figure and guardian came from the front entrance, deciding to ask her how she liked her breakfast Shirou asked "Fuji-nee I'm making Japanese ham-burgers for breakfast today, do you like yours medium or well done?" with that he continued to cook the meat patties in the frying pan before hearing Taiga shout back "well-done please Shirou" and proceeded to leave Fuji-nees portion on the pan to cook more before getting his pattie off the pan and proceeded to do the side dishes.

With that breakfast was served as the Emiya hair laid out the food on the table before sitting down and saying his graces before digging in, he then reminded Taiga to say her graces first before she started eating "Mmmm this is good, you know you could start your own restaurant with these dishes Shirou, Its defiantly something to look into as a carrier choice"

"You know I don't have time with that Fuji-nee, what with my part-time job and my entrance exams for High School that's two weeks from now" Shirou replied back as he chomped on a piece of his hamburger before Taiga remembered something "speaking of high school Shirou have you decided where you want to go?" his guardian asked before getting her answer from her charge "I've already decided to go to Homurahara Academy in April, its closest to my house and it even has an archery dojo for club activities"

"Homurahara huh? I think that's where I was conducting my teacher-training, it has a very good educational programme and is co-ed, plus its where I used to go back during my high school days" his Guardian said before continuing "actually Shirou have you thought about any club activities you want to try out? Perhaps kendo maybe?" Fuji-nee said thinking that Shirou would be good In the club due to his excellent skills with the blade, of course Taiga wasn't a slouch either as she was both feared and respected as the 'Tiger of Fuyuki' back during her teen years, in fact she could have won the nationals making her the strongest kendo expert in the country if she wasn't disqualified for leaving a Tiger strap on her Shinai.

"Thanks Fuji-nee but I've already decided to try out Archery, besides I don't think they'll let me in the club in the first place, especially after that 'incident'" this caused Taiga to wince as she remembered the event that happened 2 years ago when the Emiya was still a part of the kendo club in order to practice fighting against human opponents.

Due to his skill in kendo after practicing with Fujimura Taiga every-day he was at a higher skill level then most of the kids in his club including the senior members, this expectedly rubbed his sempais the wrong way at have someone younger then them beating them at practice duels, so they decided to do something in order to 'put him in his place' by getting him to agree to a practice duel against all the seniors or they would chuck him out of the club, being the oblivious idiot that he was Shirou agreed.

However when Fuji-nee heard about the duel she decided that they needed a serious beat-down in order to deflate their egos and for disgracing the art of Kendo, she decided to accomplish this by swapping Shirou's normal practice weapon with 'Tora-Shinai' a cursed weapon passed for generations in the Fujimura family that thrusts for fresh blood.

Needless to say the end result was shirou standing over a pile of the rest of the Kendo club that was rendered unconscious, his cursed shinai purring from the amount of enemies that it got to slaughter. The end result of this fiasco was the Emiya banned from the kendo club but the memory of his one-sided massacre still lingered in the minds of the kendo club as they unconsciously flinched when they passed him in the corridors.

"I said I was sorry" his guardian wined like a little child "I just wanted to make sure that those idiots were taught a lesson, how was I supposed to know my shinai had that kind of effect on people, I thought it was just a make-believe tale grandpa told me"

"Whatever, I'm just hope that the Archery club doesn't have cursed bows or arrows" Shirou said as he sighed at his guardians antics, he loved her like she was his real sister, but sometimes he wished that Fuji-nee would grow up sooner then later, her grandfather still gives her an allowance for gods sake.

It was then that Shirou noticed something after looking at the clock near the kitchen "actually Fuji-nee shouldn't you be at work, its already half past eight" he said which caused the woman-child's eyes to widen in realisation before stuffing as much food in her mouth as possible, she then grabbed the books she came in with before shouting "oh shoot, I'm going to be late, thanks for the breakfast Shirougoodluckwithyourexaaaaaaaaaaaammms" as her voice could still be heard as she rushed out the door at break neck speeds.

At his guardians quick exit Shirou noticed that there was still a little of Fuji-nees breakfast left before sighing and decided to store it later for her lunch, he then finished his meal and cleared the table before getting his stuff ready for the last day of Middle school.

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Today's lessons were alright in his opinion as the teachers went over the different subjects that would probably be covered in the high-school entrance exams, of course Shirou had already memorised the subjects that would be covered thanks to Taiga 'leaking' the info to him due to her working at the school but it never hurt to be careful, with his final lesson over the orphaned hair of Emiya decided to head straight home since he didn't have work today, he had neared the front gates when he noticed something that caught his eye.

It was a high bar that the physical education forgot to put away and was about to go back inside to inform the teacher in charge of the department when a sudden idea lit up in his head, since it was already up he might as well try it out as he wanted to test out how his training went. As he got on the elevated platform he then jumped on the plank to launch him into the air and was almost over the bar but then he lost his momentum and crashed on the air cushion below.

Deciding to try again Shirou picked the pole that fell of and placed it back on the platform before going back on the plank and launched himself in the air and almost over the elevate pole, Keyword 'almost' as he was once again sent falling onto the air cushion below.

Normally someone would give up on the 3rd failed attempt but Shirou Emiya was a very stubborn individual and continuously tried to jumped over the bar and failed every time before something happened on his 14th try.

At that point he was very frustrated with his failing streak and as he bent over on the jumping plank the Emiya had unconsciously activated his nerve circuits and flooded his legs with prana, causing him so sour into the air like a rocket as the prana in his legs were released.

As he soured in the air he mentally chastised himself for accidentally using Prana Burst when he should have been using his ordinary abilities to jump over the pole, now because of his frustration ridded mind he was now over 10 metres in the air and quickly reinforced himself as the landing was going to hurt.

Sure enough the secret magus came plummeting to the surface and landed on the air cushion with the force of a sack of bricks causing the pole to collapse on top of him in a loud collapsing noise. As he picked himself up from the wreckage he did a quick check on himself to see if anything was broken but found that he hot off with only a few bruises thanks to his quick thinking, he also discovered as he was sent plummeting to the surface that he successfully jumped over the pole after so many failed tries so that was a plus.

"Still it was pretty careless of me to use my circuits out in the open like that, I just hope that nobody…..saw…that" he said to himself slowly as he suddenly grew more pale every second as he was face to pace with a black haired girl with her hair done in pigtails staring at him In shock.

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It was the final day of the school semester as a black haired girl with aquamarine coloured eyes walked towards the front gates of a nearby school in order to deliver some documents to member of faculty which were part of her duties as a member of the student council.

A girl of exceptional grace and beauty, she had excellent grades, was kind to her piers and younger classmates, and was both the most sought after and most envied in her school, however besides all that sparkle and glitter there was a side to the lady like schoolgirl that most people didn't know about.

The black haired girl known by the name of Tohsaka Rin was in fact a Magus.

Being the daughter of a family of mages that watched over the land of Fuyuki for generations she was met with high expectations from the day that she was born, due to being the result of a selective breeding process that dates back hundreds of years since her family lived in Japan during the time of the Tokugawa shogunate.

Since she was old enough to walk she was trained in the mystic arts by her father Tokiomi Tohsaka in order to give her the necessary skills to acquire more knowledge and pass it down to the next generation, so that her family could one-day reach the unattainable dream that all magi strive for.

The route to Akasha the root of all things past, present, and future.

However when the young magus was only 7 years old, tragedy struck, her Father Tokiomi Tohsaka left the house one day in order to participate in the holy grail war, a battle royale between 7 magi using 7 summoned familiars called servants to battle each-over for the holy grail, an omnipotent wish granting device.

Before he left he gave some last parting words to her daughter before leaving her his necklace for her safekeeping, a few days later her father was discovered to have been killed during the war.

If that wasn't bad enough, something happened during the war that left her mother Aoi Tohsaka a broken wreck that slowly withered away in the hospital, leaving the young magi an orphan under the guardianship of her Fathers student and the son of the local church priest Kotomine Kirei.

The reason that a family of mages were even allied with the church in the first place was due to the fact that the Tohsakas in general were secret Christians, during a time when Christianity was shunned and any practitioners of the faith were persecuted by the Tokugawa Shogunate, because of this show of loyalty in the face of danger the Tohsaka family were from then on considered allies of the church.

Due to this alliance, the Tohsaka master were on very good terms with the mediator Risei Kotomine, the father of Kotomine Kirei, who was dispatched during the third grail war in order to reduce the number of casualties and property damage that could potentially endanger the war and risk exposing magic to the world, this relationship had carried on to the fourth heavens feel where Risei was once again chosen to act as mediator during the fight.

With the duty of raising the young magus-in-training included in his late masters will, Kirei was charged with teaching Rin mage-craft and managing her families estates until she was old enough to inherit them properly and manage them herself.

And he did a pretty good job teaching her as she mastered the spells located on her family crest, most notably the Gandr a Finnish curse that shots a black ball of cursed energy from the tip of her finger and causes physical illness to her target, she was also skilled in a more dangerous form of the curse called Fin Shot, which involves pumping the spell with more prana, resulting it in gaining physical characteristics and causing more damage to its target.

The other branch of mage-craft she is proficient in called Jewel-craft, the art of transferring prana into gemstones such as ruby, sapphires, and other jewels like topaz, emeralds, and garnets. She mainly uses this art to transfer her prana into gems on a daily basis, so that she can use them to either power her spells, or use them as magical grenades that explode up to a force comparable to an A-rank attack depending on how much magic was stored in the jewel.

Obviously such an expensive form of mage craft would put an enormous strain on an ordinary magus families finances, however the Tohsakas were wealthy landowners in the past so they had a steady supply of jewels to use for their craft.

Unfortunately with the death of the last Tohsaka head, the lands that the family owned fell into the hands of others due to the incompetence of Kotomine Kirei, leaving only the area around Rins house under her name, so she is limited in the gems she has at her disposal.

Although she suspected that he did it on purpose in order to teach her humility and not end up as a spoilt rich kid.

But that's not what's important right now as Rin Tohsaka has more important things to do at the moment as she was to visit a nearby school in order to deliver some documents, however when she got to the front gates she saw something that caught her eye.

This something was a red headed teen her age trying to jump a high bar that was set up just a bit too high to be considered jumpable by normal standards, normally this wouldn't garter any sort of interest, however the red-head wouldn't give up and tried over and over again to jump over the BAR but never succeeded once.

To the black haired magus that was watching, it was comforting to see such passion and drive coming from someone her own age, as all the others in her school were all lazy idiots who were too busy concentrating on hanging out, wearing make-up, or reading manga to really commit to something with all your heart and soul, as someone who acknowledges the importance of hard work it was refreshing to see someone else have that same drive.

As she continued watching him jump, fail, get back up again, jump again over and over for 13 times it was on his 14th try that something happened. As he was preparing to jump, she saw something build up in the base of his legs, like a balloon being filled with air, and as he lifted himself off the air, the built-up energy was released causing to shot into the sky like a rocket before plummeting towards the surface and crash landed on the air mat below, causing it to collapse from the impact.

Time seemed to stand still as both attempter and watcher tried to process what just happened before Rin got her Barings together and contemplated on what to do next. Based on what she saw, the boy that tried jumping over the BAR had done something that should have been impossible by normal circumstances, which only meant one thing.

That boy was a magus like her as she clearly sensed the sudden burst of prana from his jump, and he had done it in broad daylight no less, plus judging by is pale expression as he looked at Rin it wasn't intentional, he then opened his mouth and said "look…I know what this looks like, but I can explaaaAAAAAAAAAN" he shouted as Rin ran towards him and grabbed him by the collar and dragged him to the side of the school and slammed him against the wall while looking sideways in rapid successful before shouting in his face "Are you stupid?, what did you think you were doing using mage-craft in the open like that"

This had confused the red-head as he suddenly realised something "wait a minute, Mage-craft? You're a magus?" but before he could say thing more he was interrupted by the black haired teen "Don't you dare try to play dumb, I saw you clearly using reinforcement to enhance your jump if you thought you could get away with it with out getting caught you have another thing coming"

"But it was an accident I swear, I didn't even know I used Prana Burst until I was off the ground" Shirou said wanting to pacify the clearly pissed teen who replied back "what kind of idiot would 'accidently' use mage-craft, just what had your teacher been teaching you anyway"

"Well it's kind hard for him to teach me anything now, considering that he's dead" the Orphaned Emiya deadpanned which caused Rin to feel like had been slapped, this had caused the Tohsaka to be reminded of the fact that her own teacher/father Tokiomi Tohsaka was deceased, seeing Rins degected face Shirou took a deep breath and said "look its obvious that we got off at the wrong foot, how about we calm down and star over from the beginning"

Hearing the redhead say that, Rin also took a deep breath and said "Fine" before letting him so, giving the 15 year old to straighten himself out before saying "so what do you want to know?"

Not taking her eyes of Shirou, the hair of Tohsaka got straight to the point and said "just two questions, first who are you?" this was simple for the red head to answer as he answered the first question "Well my name is Shirou Emiya, and I'm a third year at Fuyuki Public Middle School, mind if I ask who you are?" Shirou asked which caused Rin to reply back "Its Rin Tohsaka but that's not important now, what I want to know is why you are her in the first place, Fuyuki City is one of the most spiritually rich lands in Japan, so there's no way another magus would come here without some sort of ulterior motive"

"But doesn't that apply to you as well, I mean what would the second owner think if he found another magus trespassing on his or her territory" Shirou answered back which caused Rins eyes to widen, this idiot didn't even know who she was? And he had been living here without that knowledge, just what had his parents been teaching him.

She then decided to let the cat out of the bag by saying, "I AM the second owner, and to answer your question I'm pissed that you had been living in my territory without my knowledge so answer my question already" this had surprised Shirou as to the identity of the person in front of him, he of course was aware that Fuyuki had a second owner thanks to Kiritsugu's lessons but the older man forgot to mention who that person was, it was the main reason why Shirou didn't seek the owner out in order to seek permission to set his workshop in his/her territory.

What a way to make a first impression huh?

But that wasn't important now the unregistered magus processed this info and chose his next words carefully, " I'll be glad to answer your questions miss Tohsaka but I think we should relocate to a more 'private' area as this isn't the place or time to discuss such 'sensitive' material if that is alright with you?"

This had Surprised the second owner at the formal speech that Shirou was giving before realising her mistake, it was only a few minutes since the accident with the highpole and other people would be sure to come running to find out what is wrong, deciding to take Shirou's advice she paused to consider her options before replying "alright, we'll postpone this for now until we are at a more 'private' location, do you have anywhere in mind?"

At hearing Rin accept his suggestion he continued "how about my house, its closest and my guardian is still at her job doing grades so she won't be coming round for a couple of hours, is that acceptable?"

At the unexpected invite by the red-head, Rin decided to accept "fine, lead the way Emiya-kun"

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The walk to his home was tense to say the least, Rin kept giving Shirou warry glances at him like he had some sort ulterior motive, which was standard behaviour for magi, of course the Emiya being the clueless idiot that he was never realised this for the hole trip.

As he walked up to his houses front door the hair of Tohsaka decided to evaluate the home residence of a potential ally or enemy, it was a traditional Japanese size house that was fairy large, to large in fact as it could easily fit a large size family and still have room for more.

The inside that Rin managed to observe was fairly decent as it had wooden floors that were very clean, and a hallway that lead to a medium sized lounge with a fairly stocked kitchen in the corner, as he lead Rin inside he said "do you want anything to drink? Tea or coffee?"

"No thanks" the Tohsaka quickly said "I'm in another magus territory at the moment, how do I know you won't poison them?" this had caused Shirou to frown as he shot back "I happen to take cooking very seriously Tohsaka-san, doing something like poisoning anything I make for any reason is insulting to my pride as a chef."

This had surprised the Average one as she didn't expect him to be serious about something as mundane as cooking, although she's one to talk as she is a very good cook herself, living by herself and having a mabu tofu obsessed priest for a guardian meant that you cook by yourself very often.

"I see, in that case I'll have tea if that's alright" The Tohsaka said to Shirou as he got to making some tea using the finest tea bags he could find, once that was done he set the finished drinks down near his and Rins seats and sat down opposite the black haired girl "Right how about I start from the beginning" after taking her cup and taking a sip the barer of the Tohsaka crest said "fine, go ahead" at hearing this Shirou decided to begin "well to answer your question Tohsaka-san I've been living here with my dad since he purchased the residence 8 years ago, the reason I didn't seek you out is because while my father informed me about the second owner, he didn't tell me who he, or she in your case was, so a apologise if I have offended you in some way"

"That's alright" Rin replied accepting Shirou's apology before saying "what I want to know is why your father was here in my land in the first place" at hearing this the red-head shook his head before admitting "my father wasn't the most talkative person when it came to talking about himself, heck I didn't even know where he goes when he leaves for abroad for a month or two" this didn't make Rin very happy as she said " that's pretty irresponsible of him, I mean wasn't he supposed to be teaching you mage-craft"

"Dad wasn't very enthusiastic about me learning Thaumaturgy, in fact I had to constantly ask him for two years before he agreed to teach me, plus he even said after that I could quit anytime a wanted if it became too much for me" after Shirou said that Rin was in shock about the sheer disinterest about his father teaching the Emiya the family craft, this has quickly turned to rage as she quietly said "are you sure your father was a magus Emiya?"

At this strange question Shirou could only say "huh? Sure he was a magus, he may have been a bit strange and his methods a little unorthodox but he still taught me the best he could"

"BULLSHIT" the Tohsaka shouted, causing Shirou to flinch at the black haired girls unexpected out outburst "your father is someone I would never consider a magus at all" at hearing herself make that uncharacteristic outburst Rin quickly cleared her throat and regained her composure "sorry about that Emiya-kun, but you have to understand that a magus thaumaturgy is not something they truly possess, it is the culmination of their families research that needs to be passed on to the next generation, but your father's careless dismissal for tradition is an insult to magi culture everywhere"

At hearing Rin finish Shirou had to admit that Rin had a point, magi were researchers by nature and the fact that Kiritsugu didn't even try to advance his research mean that he wasn't a traditional magus in the slightest. With that in mind Shirou could only sigh and say "now that I think about it, maybe he really didn't want me to continue his work in the first place, heck he didn't even teach me the correct way to create circuits, although he did teach me Reinforcement, Projection and structural analysis"

At first Rin was confused as to why the red heads father would not want his own son to inherit his work, but dismissed it as she realised something was odd during Shirou's speech "wait, what did you mean by Create Circuits?"

At this question the son of Kiritsugu replied "yeah magi create their own circuits right? Well at first I had to create a circuit every-time I wanted to do thaumaturgy, but it would always vanish after I used it, so I had this idea two years ago a few months after my dad died if it was possible to prevent my circuits from vanishing after use, It did hurt like hell though dying it out but I managed to do it in the end, which was pretty impressive as I did it myself without any help" he then thought about something before continuing "Now that I think about it you probably have more circuits then me since you had better training then me being the second owner and all, so how many do you have?"

Rin tried to process what she just heard as there was so many things wrong in that sentence it wasn't even funny, but could only say "I don't know, how many do you have?" and braced herself for something that she probably wouldn't like.

Shirou replied in pride by saying "912 magic circuits, but you probably have more considering you trained longer.

"What?!" she thought out loud, that was impossible the number of magi with more then a hundred circuits could be counted on one hand, and no one alive or human possessed that many circuits.

She had said as much to him.

"But, but I know I'm right, I've been creating those circuits for the past 2 and a half years, so I know that the method works" he then held out his hand to Rin and said "here, analyse my body, their all there to prove my point"

At first Rin was sceptical at Shirou's claim, after-all who heard of a magus that can create magic circuits, the idea was so ludicrous it wasn't even funny, the number of circuits a person has is set at birth and the number doesn't change, but she might as well humour him so she can prove him wrong so she then took his arm and started analysing him.

…..

…..

…

…..

Whatthehell?

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"Uh tohsaka-san are you feeling okay, your skin is getting paler by the second" indeed the clueless Emiya was right as Rin went pale after analysing his body that he was worried for her health.

Then she retracted her hand and looked at him with emotionless eyes, in fact she had even stopped moving or even blink, this had worried the red head teen even more as he said "Tohsaka what's wrong? Are you feeling all right? Do you need me to call a doctor?"

Suddenly the air turned icy cold as Rin suddenly developed an evil smile which instantly set Shirou on edge "eh Rin…maybe its just me but it looks that you have a really evil smile on your face" at hearing his nervous voice the smiling girl replied "oh its nothing to worry about Emiya-kun, right now my mind is as wicked as the devil himself" she said in a sickingly sweet voice which scared Shirou to no end.

"I must say Shirou that I was quite surprised by what those circuits you talked so highly about in your body, so much that I wanted you to hear my honest opinion" at that point Shirou could clearly see the dark evil aura that was forming around Tohsaka, which was clearly focusing on him, so much so that he wanted nothing more then to run away as fast as his legs could carry.

But he never got the chance as he blinked and Rin was suddenly next to him without him knowing about it "what's the matter Emiya-kun, there's nothing to be afraid off, I just want you to know my opinion about those Interesting circuits you possess" with his escape options sealed and he had nowhere to run Shirou gulped and said "Em Tohsaka-san are you mad at me or something?"

At this question Rin said "was it really that obvious?" causing Shirou to freeze, realising that he was doomed, "now please sit down there Japanese-style Emiya-kun, this will be over in a moment"

Feeling that he might as well go down with his head helf high the Emiya sat on the cushion while Rin sat opposite him.

She then took a very deep breath and shouted "ARE YOU BATSHIT INSANE?, WHAT WERE YOU THINKING TURNING YOUR NERVES INTO CIRCUITS YOU IDIOOOT!" at the top of her breath which was so loud that Shirou had to plug his ears to prevent himself from going death.

After making sure that he could hear again the bearer of nerve circuits replied back" I don't get why your so angry at me Tohsaka-san, I mean isn't creating circuits how normal magi do their mage-craft?" with her voice still loud the pissed magus continued "That isn't how it works you scatter brained dunce, magic circuits exist in the soul and have to be 'opened' in order to be used, what you did was turn your nerves into make-shift circuits which I might add is only used by magi as a last resort due to its high-fatality rate even with proper tools and supervision, yet somehow you managed to not only turn 912 of your nerves into circuits which I might add should have made you a cripple but somehow your not, and you had already done this many times before without any tools or supervision"

She then took a deep breath and continued "an average magus has only 20 circuits, I only have a hundred and that's with my magic crest, so why the hell aren't you DEAD" after Rin let herself stop to catch her breath while covered in sweat, the Emiya took a moment to absorb what she said.

If what she said was true, then he had been doing it wrong for years and he never even realised it, why the hell had dad never noticed? He had been risking his life for years and all because he was doing it wrong, of course there was a good side to it as he now had 912 low quality circuits made from his nerves all ready to be used at his leisure.

Noticing that Rin had calmed down somewhat he said "do you want a glass of water?, all that screaming must not have been good for your throat" at seeing her nod back shirou went to the kitchen and got her a glass of tap water "here, this should help"

"Thank you Emiya-kun" Tohsaka-san thanked before chugging the water down with viger, after she finished drinking she put the glass down and said" don't think this lets you off the hook just yet Emiya, what you did with your circuits was crazy and suicidal on so many levels that I cannot even begin to understand what was going on in your mind at the time, what in heavens name made you think it was a good idea to turn your nerves into circuits in the first place"

"Well it seemed like a good idea at the time, and after the first try my thaumaturgy started to improve after I finished as I could only reinforce stuff with a 50% success rate, so I figured I might as well continue as it was helping my mage-craft" at hearing his explanation which caused Rin to develop an eye twitch she sighed and sat back on the floor cushion "honestly, out of all the magi I met over the years you're the first one that I just don't know what to do with, and speaking of insane stunts there's something that had been bothering me for a while now" at Shirous confused face Rin continued "what was that skill you used back at the school?, it wasn't normal reinforcement as the flow of prana I could sense wasn't the same"

At this question Shirou took a moment to think about what she was saying before answering "oh! You must be talking about Prana Burst"

"Prana Burst?" Rin said with a confused look as she had never even heard of method which after looking at her confused face Shirou continued, "yeah it was a skill that was detailed in my Dad's old journal, you basically concentrate prana into the area that you want to enhance my reinforcement, release it all at once like a jetburst, and reinforce it again giving the user inhuman strength and speed, I mainly used for highs-speed movement and improving the power of my strikes, plus it requires lots of prana in order to use and even I cant use it for more then 15 minutes before I run out, so did you get all that?"

If Rin didn't think Emiya Shirou could surprise her after hearing about those atrocities he calls circuits she had another thing coming, the skill he had described to her was clearly Not the Reinforcement skill she was familiar with, in fact she doubted she had even heard of Prana Burst to begin with. Based on what she heard it was doubtful that she would ever use it herself as she would be bleed dry of prana in no time, that and she was more of a ranged fighter to begin with.

"I…see, well Emiya-kun I'm sure that is a very interesting skill you have and I would love to see it in action sometime but I think that its already getting late, after all your guardian would probably be coming round soon and it would be problematic if I was seen here with you." Based on what she heard today she really needed to go home and rest as it was draining on her nerves.

It was then the Shirou realised something that he needed to get out the way before she left "oh Tohsaka before you go there's something that I need to ask you first" this had confused the black haired magus as she was curious as to what he wanted to ask "yes? What was it that you wanted to ask Emiya-kun?"

What she didn't expect was for the Red headed teen to get all serious and "Miss Tohsaka, I would like your permission as the second owner of Fuyuki to set my workshop within your territory if that is all right with you" this had caused Rin to blink once then twice before feeling the urge to whack her hand on her forehead as she completely forgot about her responsibilities as the overseer and the fact that Shirou was practicing mage-craft within her land.

Deciding that she might as well get this over with before she goes she said "well I guess its better late then never Emiya-kun, very well you have my permission to set up your workshop on my land however there are a few conditions that I would like to impose first"

This had surprised the redhead but he guess it was inevitable considering that he was operating on her land 'fine what is it that you want Tohsaka-san.

"Oh its nothing serious just more of a request then anything, you see even though my skills in mage-craft are considered first rate it was mostly though self study so I was wondering if we could train together on some days as it would be helpful to have someone else my age to exchange notes and theory's with, besides based on what you told me about your Father he never finished your mage-craft training so I think I can help you with that, that and if I left you alone you'll probably cause an accident like at the school grounds again and risk jeopardising the secrecy of magic"

After reviewing what Rin said in his head Shirou had to admit that it was a fairly decent deal, plus he could afford to exchange some of his secrets to Rin as it wasn't like he made any breakthroughs in mage-craft. Then there were the tips in thaumaturgy that she was offering that would really help with his own training, as ever since Dad died he hadn't learnt any new spells and stuck to improving the spells he already knew.

Coming to a decision the Red head said, "alright you have a deal Tohsaka-san, it's a pleasure to be working with you" as he held out his hand to seal the deal "likewise Emiya-kun". Rin said as she held out her hand to shake Shirous,