Crossover between fate stay night and infinite stratos

I do not own any of the above, they belong to their respective owners


It's strange name isn't it? Divide by zero... it fits zero no tsukaima better than IS but what can I say? I just have a gut feeling it fits. Infinite divided by zero. Kind of a philosophical science isn't it? Oh well, this is the end of my musing.

Shirou X Tabane pairing

A warning for those who are expecting other pairings.

A welcome for those who are willing to experience my biased view.

Technology or Sorcery?

Let the chaos when magic meets science ensue!

(I guess that will be enough?) To: adrian11


Edited

cmartist, I am not looking for beta readers just yet. Maybe if I can find one or someone applies but I at least perfect this chapter first. Havent made much changes except for few corrections though...

Then you made a misunderstanding... This Shirou is NOT cannon or half of it.

He is taken under Zelretch's wings after Kiritsugu died, saved when he is about to be killed by magus who bear animosity to his father just for revenge. This does not come from any Fate endings. Since this is so, your second question about how could he make any relationship is answered. He never had a relationship before or rather all the people he may had a relationship in other worlds have died.

Any more questions?

Oh right, just for your information... i have started on chapter 2 and made a tad bit of progress in the legend of gandalfr and is half done in a one-shot I have planned.


Edited again...

Right now it's a fully going story, plans and plot far below is deleted.

To new readers do not worry, those are just spoilers and so please enjoy.

Trying to fix the grammar myself through rereading numerous times, hopefully it's quality increased significantly.

Hmm... I am merely spoiling the terminology and a bit of the plot. Though it does make one feel like the story has been spoilt significantly but I assure you my friend, Zen neeon, the story will be far above your expectations after reading the bits and pieces I have spoilt. In other words, the plot itself have not been completely revealed!

Roughstar 333... In the second mondo grosso, little Ichika is but 12 or 13, 10 in the first and now 8 bordering on 9 years old. How would a teen no, young boy be able to pilot an IS before it is made to compensate him. Remember! Tabane made Byakushiki for him to pilot, it's has always been her plan to make him closer to Houki.

Travelling? Non non! Impposibru! Shinonono Tabane as you know will die at the age of 116 years old in that world. Shirou in the first chapter said that he had all the time in the world yes? At that point in time he'll leave with his master who finally found him. 100 years I tell you! but of course, they'll be a lot of skips.

'White Knight' is a code name for the Byakushiki given by the countries that saw it's might. 'White Knight' itself is not it's true name. It has always been Byakushiki and that is why Chifuyu knew that Tabane had something to do with Ichika using an IS since that core, core 001 used to be hers. The modification of Byakushiki is used to make Akatsubaki anyway so it's 'modification' not re creation.

Thanks for the info and thoughts Morli, I'm sorry if it will still be canon, in some way, it will not show much of Ichika side of the story so it's kind of quite original, in another way... I'll check up on that fic you recommended, it helps since I have not fully understood Tabane's full thoughts or i think it is impossible to understand her fully.

No, the new personality thing is not coincidental and yes, I thought of making the core with both their blood. One for intelligence (Tabane) and the other for strength (Shirou). The girls only thing is different. My theory is that the two blood, mixed, will have a conduit effect like a pipe by the shape of yin and yang, balanced on all times. Following that taoist theory, 'yin' (female) element that is more prominent in control and balance that 'yang' which is destructive will be the needed 'magic' to react to/activate it.

Most men are of 'Yang' affinity and if girlish boys have 'yin' it would mean that there are quite numerous male IS users aren't there? So I'm thinking up on alternate theories to it. Maybe limiters set up by Tabane on Shirou's request. It's true that females have more feelings than that of man so he might think it is better for women to hold the weapon.

Right the political situation. I have already seen the fear and anxiety of the countries including japan. If one have such dangerous weapon usually they would automatically go for world domination right? Well, because it is Tabane that she actually agrees to the demands of the council and the set up of the Alaskan treaty eventually.

I added the combat suit because I have no intention to undermine men. "Though only one person in history actually uses it, namely me, it made IS users understand that just because women can use the IS, they are not superior to men nor are they superior to others, It's a matter of chances. They gained the chance and others don't, the other way around is possible. Also, It helps reduce the amount of IS users becoming corrupted and joining evil organisations," Shirou stated his intentions and ended with a light joke which he chuckled to himself for.

Summary? I'll think of one that is better, it really is too much what ifs...


Edited

Lots and LOOOOOOTS of i to I correction, still looking out for grammar mistakes!

Andrew MacKenzie, your kindness is appreciated but you forgot a "Not" in your last sentence because if the "Not" I think is supposed to be in that sentence then what you are trying to do is to be mean to me but helpful at the same time, a contradictory action. Again, I am looking for all the Is and trying to fix each of them but I'm sure there is a LOOOOOT of them that aren't capitalized yet, they are too small to hunt...


Unlimited Fate Works - Divide by Zero

Chapter 1 : The 'arrival'

Lost...

Left, Right, Up and Down...

All direction is useless here in the verge of dimensions...

In this abyss there is no such thing as 'recognition'

But existence is still dominant...

Years have he been travelling with his enigmatic master

Somewhat he have been coping with the madness hoping that his serious moments increases

Hopefully, once this is all over he could return to Fuyuki with at least half of his mind

So now, where is he?

He has not long left the last world

He isn't far to the next world either

Why is he even thinking of pointless thoughts like this?

"Buckle up boy, the dimensional path in front of us will be quite a hassle. I might be used to it but you hmm... would probably survive but root knows where you have been thrown to. Oh well, you only live once (YOLO) like you youngster say." Those were the words that he remembered. He remembered sighing at his master's irresponsible claims for now he is in a problem.

What problem?

Well, being thrown about between time and space, crashing to dimensional walls occasionally and also the sharp continuum piercing a few times, hmm... His body isn't exactly in a state to be alive under human standards. Only because he is a magus that he could survive. His instincts kicking in an activating his most powerful inner realization of recovery, Avalon.

Still, the damage is quite severe and the slow recovery does not allow him to steer his course so he drifts along the now calm, but still dense, time and space to root knows where like his teacher has spoken.

Sighing with some effort he thought that this event happened far too occasionally. Him getting into some life threatening trouble, sent to another world, time, dimension, worlds, experiencing new things, meeting with new people. It's hard to determine which is his master's plan and which is merely coincidental.

Just as he is about to fall into a hibernation like state for increased recovery rate his body slipped through time, landing into a new world. Lucky since people may find him and help him if they are hospitable enough. Sadly, the unlucky part is that he is falling at high speed towards the ground from a height of approximately 80 km. Not that high but the speed is enough to kill.

'Wait... This is not the time to be calculating distance, speed and time to collision.' His eyes widened in realization of his apparent idiocy that he always failed to cure. Spreading arms wide to at least reduce acceleration he thought into his massive reserves of knowledge looking for a few that can help him get out of this current situation.

Many are found but most are incompatible. He is a sword incarnate after all, he needs one that can be fitted into swords.

Finding none he resorted to much easier actions, one that he should have thought first before the last, using one of his noble phantasms, conceptual weapons, and use their ability to either land him slowly or save him entirely.

"Arahabaki!" Calling upon a demonic sword of wind, a gale of some sort formed and slowed his speed to considerable levels. He kept descending though for he needs to land. Little could soothe him for the demonic sword he hold calls for battle and maybe a little of blood.

Beads of sweat forming on his forehead, he is exerting as much prana as he can to the sword or let himself fall the rest of the way. The cause of the lack of Mana? Simple, the dimensional transfer has been too taxing and the constant amount of od Avalon is consuming to keep him alive does not allow him to recover his magic reserves at all. It is ironic that the regeneration that tries to heal him is killing him at the same time.

So he fell, losing consciousness he fell towards the ground that is a few hundred meters away. The only soothing thing he could think of is that he is not falling head first to the ground. At least his body will receive the same amount of damage, a few broken bones, ruptured organs but yeah, those beats a broken neck and heavy concussion.

A sound like a tomato thrown to a wall with strength resounded together with a small explosion. The weight of the reinforced magus broke the earth as the force from the fall slammed his back splattering blood in all directions. In fact blood is coming up his throat but he forced it down so he will not suffocate in his own blood.

The only hope he have is that this world have a civilization advanced enough to treat him or one that is intelligent and would at least help him out of this trench.

True enough a person who are brave enough to inspect the location walked near. Wary slow footsteps resounded in the magus' ears. He tried to open his eyes but they can see nothing but the blurry skies.

"Are you okay?" A woman's voice asked poking him in the cheek.

To him it is an outrage, he is obviously not okay. He is bleeding profusely, broken bones throughout the body, a few punctured organs, his lungs is slowly filled with blood that it is so hard to breathe. The pain is tolerable, he has experienced worse pains without the same wounds. Since there is no hostility, no pressure of being crushed by space or lost in time, he fell asleep.


Waking up to the beeping noises of a medical contraption, realization that he is being treated at a hospital forced his mind to go hyper drive. Opening his eyes forcefully but to be blinded by the light above he is rather surprised by the shine of the completely metallic room.

'This is not a hospital.' is a comforting thought but another thought, 'Where am i then?' brought... panic? no... more likely mere anxiety.

Straining his severely weakened neck to move he successfully looked around to see monitors, circuit boards, metal pieces which resembles parts of more intricate machinery and the numerous tools which never have been seen in his world.

Two things are confirmed at this point

1st, he's obviously in some futuristic world.

2nd, he's possible made a guniea pig at someone's laboratory.

Even at the abundance of steel, there is little that resembles a blade in form or concept, so there is nothing he could extract memories from. Strange that there is no scalpel in a room that resembles an operating room.

Testing his fingers and toes in case that his nerves are usable, he found it rather easy so he deduced that he hasn't been asleep so long. He's not encased in ice, frozen in time nor trapped in space. The memory of the experiences alone made him to laugh, albeit weakly.

It seems that his weak laugh alerted of whomever helped or caught him to know that he is awake. A decompressing sound of an automatic door and the following light footsteps signaled that the 'scientist' is coming.

To his surprise, it is a strange woman. Yes, strange is the only word he could use looking at those bunny ears. Since they are metallic they could be nothing but accessory but thinking over that this is an inventor he is thinking about, it should have additional appliances hidden within like a communication device, maybe.

"It seems you have woken up~" Cheerful, too cheerful, so cheerful that it stunned him for a second. The female scientist not knowing the current thoughts dashing around in his head walked over to the monitors that are checking what most probably is his body condition.

"It is quite a miracle you survived the fall." She said nonchalantly and he thought it should be a feat one supposed to be amazed of. "I wonder how your wounds heal in hours..." Curious the scientist started feeling his naked torso. Of course it is really uncomfortable for the young man but he could raise the strength to speak, his throat dry.

The woman noticed that though somehow and fetched water to drink. Pouring the liquid into the open mouth, he gulped fresh water as his parched throat is moistened. "Thanks." He finally uttered as the she smiled in content in return.

"My name is Shinonono Tabane, a genius extraordinaire~" She proclaimed with glee as if she has been practicing with it well.

Finding no reason to hide his identity he answered truthfully, "I'm Shirou... Emiya Shirou."

"Hmm hmm." She nodded twice with utmost excitement. "Where do you come from?" The sparkle in her eyes is bright enough to force the young man to look away.

"The most logical question to ask now is how did I survive the fall and how did I recover... right?" Dimension phasing, time travelling, such information best kept at small. Usually he would be considered a military project to create super humans, a spy or something similar on a mission to infiltrate whatever this country he is in.

"I don't care about logic, i know you are not a spy or any guinea pig. I hacked onto secret services of the world, top secret files, secrets that people wanted but none... nothing at all about you." The woman is definitely dangerous, not in a battle sense, but tactically she is dangerous. "No blood match, no fingerprint match, cornea match nor teeth, it's as if you should not have existed."

Smart people are a hassle, geniuses are a bigger problem. He is now sighing since he found no possible options other than telling his current predicament and real identity. He is sure after all, most eccentric people are good people, himself included. "Please promise me you wouldn't laugh at what i am about to say." She of course nodded hard with utmost expectation she could have.

"I came from another world."

"Kyaaaa~" Exhilaration. She actually believed what a strange says even if it is true. Is she just gullible or has she been speculating this far? "I'm right!" It might also be a mere lucky guess.

"Shinonono-san.." It is really a long family name isn't it? He almost stuttered.

"Tabane is fine." She replied.

"Then please call me Shirou too Tabane-san." Keeping the honorifics since they are newly acquainted as he raised his body to a sitting posture. Grasping his hand to check his current strength he pulled out the IV drip from his right arm causing the puncture wound from the needle to close immediately.

"Ne ne.. What happened that you become so battered like yesterday night?" She immediately asked with curiosity.

"An accident." What else could he say? "I traversed over unstable timeline. I was lucky not to be crushed by the imbalanced continuum." he explained according to what his teacher had taught him in hopes that as intelligent as the scientist in front of her is, she will not understand.

"Shouldn't fitting the contraption you are using with a time stabilizer be a solution?"

She understood, that surprised him. "umm..." he tried to speak. tried since he was ignored.

"Counting the law of time and space and multitude of dimensions into consideration, it will be hard but not impossible feat." The inventor mused, "Are you heading somewhere in particular?" She asked continuing where she had left off not allowing the young man's to question his own.

"Ah... I don't actually." He answered acting somewhat more docile that normal. Typically by now, he would be long gone from the facility, smoke pluming far behind him and the continuous sound of destruction that came with it. "I don't choose where I go, I just i sort of 'arrive' at the destination."

"Without determining the world where you are going shouldn't there be chances where things are worse than this particular incident?" That he could not deny as he frowned in agreement. "I suppose 'direction' do not work nor does logic... could it be instinctual? subconscious? something like 'Where fate guide's me?' This isn't scientific isn't it?" Her mind works faster than the young man's own. Leading speculation after speculation, answering her own question with affirmed assumption and sometimes lucky guesses. Her last question is more of a joke but the young man stiffened, a reaction the young inventor found amusing.

"Ho ho~ not science is it?" She eyed the young man who is half panicking with utmost amusement that belies her curiosity. The young man do not know if this world has one, the magic association nor of this alternate universe' rules and regulations. In his worlds, leaking information such as magic to regular people no matter how high up the chain he is in society, it is a breach in conduct and will be dealt with lethally but cleanly.

The logical course of action for him?

"Hey! Wha- mmph!" Taking Tabane by surprise Shirou sprang fast for a person that is dying half a day back as he closed her mouth to avoid screams of help. A big facility like these laboratory would regularly be funded if not the government, by a hidden organisation. What he had learnt about secret organisations? There is an endless amount of henchmen that they can and will use.

Rather than fighting hundreds of trained agents hard, the troublesome thing is to actually knock them out without any lasting damage. After all, his weapons are made to kill, lethal in every sense of the word. Tabane flailed in the Shirou's arm but his iron hold kept the woman strapped to his side.

The mechanical doors luckily opened without needing authorization nor there are alarms blaring. Outside of the laboratory and a short bunker corridor he exited what supposed to be a regular storage shed with a regular Japanese house, like one he had lived with Kiritsugu in fuyuki.

There are people however in the balcony and they are as surprised as Shirou himself. Well, as if they will not be surprised seeing a half naked man holding hostage their friend or family. Now in full panic at the apparent misunderstanding Shirou did the only thing he could, run!

One of the onlooker, a woman, swordswoman from the wooden training sword she held chased as the other much younger two went to alert the authorities, police or maybe the men training in the dojo.

"Stop!" Well, the commotion is enough to know that he is chased and so he ran harder instinctively reinforcing his legs to do so. He should be running at about 60 km per hour right now so... how the hell is that swords woman still hot on his heels!?

"Stop I said!" The roaring of this swordswoman whose speed is at superhuman speed without activation of magic is scary. Did you know? Mutants are people who activated their magic circuits by mere chance and their powers manifested are their forte, their singular power with the exception more omnipotent people who are sought out by magicians, well that is the fact in his home world.

The still struggling scientist in his arm is weak actually so he affirmed that not all and maybe only this single swordswoman bear that superhuman strength and will for it has been three minutes of running and she did not falter but rather sped up with her ever increasing fury.

For now he just need to lose his chaser so first, he dropped the 'load'. "Catch!" He's not an evil person so he gave the chaser a sign that he is going to throw his hostage. Surprised by the sudden action the swordswoman's body tensed and skidded upon the road with the left over inertia. Calculating trajectory and power Shirou threw Tabane with ease as she screamed a "Gyaaaa" before caught.

No longer being chased he just ran forward to wherever his feet could carry him, safe from danger's embrace.


Watching the afternoon sun set over the horizon Shirou is now standing on top of a skyscraper. Wearing clothes magically stolen he watched the land's leylines for any magical signatures of any kind, oscillations, usage over the world. Results? None... this technologically advanced civilization does not have even a speck of magic within their blood or they never have realized it's existence in the first place.

Magic in this world is merely a party trick, an intelligent deception through misdirection. These entertainers train an equal amount of time and effort in developing their tricks with a regular magus who seeked a path to the root, the results however differ greatly.

Since he have no business and have intruded enough upon the world he focused the dimensional transference magic he got used to. The sigils drawing itself upon the ground in front of him, unlike his master he could not instantly use the magic and must consciously cast it and so he waited for an 'auspicious moment' for the gate to open.

When the sun is halfway set and the moon visible, this short time where the sun and moon meet is one of the many auspicious moments and so the gate opened. With a blue glow the out-of-the-world radiance filled the now darker roof that has not opened their lights.

Clack!

The sound of the roof door being opened is a surprise thought for he saw the same inventor, Shinonono Tabane and her acquaintance, the swordswoman, watching at him intently and at the blue glowing portal in front of him.

"Sorry for the intrusion and thanks~!" Shirou spoke his thanks for at least giving him a bed if not an operation table before running into the portal even if it is only a meter in front of him however... he os thrown back with ten times the amount of force he exerted to pierce the dimensional wall. So powerful was the force that his body was thrown towards the two women and slammed onto the wall embedding himself a few centimeters deep into the concrete wall.

"That... wasn't supposed to happen." He commented numbly as he forced his body out of the wall. Leg's fully reinforced he moved at a godlike speed as he arrived to the side of the portal almost instantly. Even the swordswoman with the superhuman abilities she held could not see more than the first step and hear the final step.

"Guh.." He pushed into the thin membrane that separated the world he is in and the void unable to break through because of the bone crushing pressure from the void itself. The 'time storm' billowing, he does not have the skills nor technique to perform the intricate magic yet. It is a hopeless cause so he fell to his knees as the portal closed once the sun completely set.

"Hey, are you all right?" The monstrous swordswoman surprisingly is the first that asked since she seemed to be really furious when chasing him.

Shirou looked back with a questioning look as Tabane fearlessly hopped to his side, inspecting him further. "During the hours I was asleep. Could you possibly say that you did nothing?" He asked about the peculiar look in the inventor's eyes.

"Nope nothing." She said with a bright smile, one that doesn't fit this gloomy night. "nu uh~!" She waved her head left and right once to affirm her previous words. Since Shirou is trutsful, he could only sigh at the swordswoman's amazement.

"Shou-" "Chi-chan~ This is Shirou~ Emiya Shirou" Before Shirou ask about the need of a second introduction, Tabane introduced for him to this... 'Chi.. chan?' that must be a nickname...

"Orimura Chifuyu." She corrected looking irritated at the nickname she is always called by but she is more confused at anothing thing to bother with her irritation. The question in her mind? Why does Shinonono Tabane that ignores other 'humans' except for those she found interesting remembers the name of a person she just met and spoke with but for a few minutes?

"Orimura-san." Shirou curtly greeted before looking back towards Tabane who is for some reason is silent and is watching him intently. "Does Tabane-san always act like this?" He asked trying to look away, avoiding eye contact.

"Well, to the few that she acknowledges... yes, maybe." Chifuyu replied unsure, one that implies that even the swordswoman, who is a friend of Tabane, does not know fully how her mind works. "Regularly she wouldn't remember people's names much less take their existence into consideration."

"I'm basically seen as a potential test subject isn't it?" The affirmative nod that came after is not assuring in any way.

Right now he had naught the ability to leave the dimension, he need to wait for his master to find him which is unlikely but for a few decades or find an alternative way to traverse the 'time storm'. Other than that he needs lodgings, clothes, food and all of that needs money well unless someone have an empty space to allow him to live for the moment then he'll make do with finding a job and the rest will follow.

He have all the time in the world after all.

"Heeeey~!" Unknown to Shirou who is thinking deeply Tabane is waving her hands in front of him trying to get his attention but was ignored. A minute has passed actually, though short for most, this span of time is enough to make the inventor pout in discontent. The scene is found to be hilarious by the third party, Chifuyu.

"Ah.. I'm sorry, did you say something?" He finally opened his eyes noticing some background noise in his ears, Tabane uttering another 'hey' directly to his ear. Surprised from the sudden change from inactivity caused Tabane to jump back, falling onto the concrete roof."Umm yes?" Shirou asked curious at what she is doing right now, oblivious to what had happened while he is thinking.

Tabane rose from her fall and dusted what few dirt can be dusted off from her frilly clothes before beaming again. "You don't have a place to stay right? Why don't you stay at my place? I can make a random reason that have a hundred percent probability to allowing you to live temporarily in the house. I can fic the misunderstanding that occurred a few hours ago too~" The words came out faster than bullets in a machine gun.

Right now his words are not a part of the equation, neither is his will. The inventor spoke of her 'plans' so enthusiastically that even Shirou himself is unable to really reject nor turn down politely. Still, he is trying to find a way out. If he live together with the well, half mad scientist, it will be only in mere time that he is reduced to test tubes and petri dishes.

"It's useless." Chifuyu advises him. "Once Tabane set her eyes on something it's practically impossible to run away from it." She spoke with her experience, the numerous test and regimes that she had been forced to do, the same experiments that made her practically superhuman at an age of thirteen.

Sighing inwardly he told to the expectant Tabane, "I guess I'll take up on the offer then." as she squealed in joy. Shirou sighed again as Chifuyu waved her head with a 'here we go again' kind of expression.


Though the IS (Infinite Stratos) weapons and system is explained in the anime and or light novels, the actual creation of the 'cores' that lie in mystery surely can be made up by the imagination of the many.

Mine is magic.

What is magic?

I think magic is the power to manipulate 'life'

Things like 'Chi' an 'Ki' seems like a rip-off would you agree?

No?

Well i think of them as the same 'energy' but different 'system'

Like the numerous gods that resembles each other in appearance, authority, power and symbol of worship

Magic are mere bits and pieces that what the human mind could perceive.

If you enjoy this I am grateful if you can review it so that I can make it better. Give me ideas better! If it is good enough I will put it in.

If it is disappointing please tell me why and how do you think I can fix it. It helps to know what I am doing wrong.