Fate/zero, key blade of wind

Greetings readers, epicgamer484 here and welcome to the first chapter of Fate/zero, keyblade of wind, which is a crossover of the kingdom heart series and the fate franchise of the Nasuverse, more specifically Fate/zero and Fate/stay night and possibly fate extra in the sequel due to the nature of the fan fiction, the reason I am making this is because I am a fan of both series, and I noticed there is a lack of crossover fan fictions of fate and kingdom hearts in the crossover section, so I decided to make one instead since I have nothing better to do.

(Warning: light spoilers ahead) To those familiar with both series (to those unfamiliar go look them up on Wikipedia trust me you wont regret it) This fic takes place during the birth by sleep game of the kingdom heart series and the fate zero light novel/anime of fate as they both take place 10 years before the main stories. The story will feature Ventus one of the protagonists of the birth by sleep game accidentally ending up in Fuyuki city after almost being killed by master Eraqus to prevent the χ-blade from being created, and protected by his fellow student and protagonist Terra by sending Ven through a portal created by his keyblade which through a combination of bad luck and miscalculation on Terra's part ends up sending Ventus to Fuyuki, one of the worlds on the Nasuverse section of the multiverse.

Now due to the nature of the Nasuverse, Ventus's magic uses slightly more prana due to Gaias reality marble but his physical abilities enhanced by the keyblade are unaffected due to his amour protecting him from Gaias effects as long as he wears it, and his abilities are based on the ones he displays during the game, plus a few other abilities showed in the kingdom hearts games I felt he could use given the situation. Based on reviewer comments I can either have Ven summon a servant to compete in the grail war as the eighth master due to him using his keyblade to unlock the grails reserve system that was featured in fate/apocrypha, or have him go through the war trying to stop casters atrocities and/or keeping the casualties kept to a minimum, if I choose the former, suggestions on which servants he will summon would be helpful (though personally I would find it interesting if he were to summon either Joan of arc as a second saber due to his heart having no darkness in it, or counter guardian EMIYA as a second archer due to his broken heart).

Finally the story itself will go from the beginning of the war after the seven servants have already been summoned to the end after the grail is destroyed and the ending will both conclude the story and set it up for a sequel because you know what they say no matter how deep the darkness a light will always shine through.

Well that's enough rumbling from me so enjoy the fic and please review so I can improve.

p.s if someone wants to be my beta for me that would be swell

Prologue

Deep in the sea between worlds was a young man aged between 14-15 drifting in empty space clutching his head like he had an extremely painful headache.

He was encased in a suit of armor consisting of blue draconic metal plates yellow sections around the knees, chest and shoulder plates and a reverse horned helmet.

This young man was called Ventus or Ven for short and was the youngest of three apprentices training under master Eraqus in the ways of the keyblade.

When his fellow student and older brother figure Terra was sent on a mission by his master after failing the mark of mastery exam to become a full fledged keyblade master, Ven went after him after being goaded into doing it by a mysterious masked boy who he later found out was called Vanitas.

He told him that Terra would become a different person by the time he caught up to him so he set out on his own against his masters wishes where he visited many worlds and met many different people such as snow white, the mad witch maleficent, the girl called Cinderella where he was mysteriously shrunken to the size of a mouse, a fellow keyblader called king Mickey, the red haired boy of Radiant garden called Lea, the hero in training Hercules and fellow gladiator Zack, the blue alien Stitch, as well as peter pan and the lost boys.

The reason he was currently clutching his head was because after finding Mickeys star shard in Neverland it teleported him to the home of retired key master and the mouse kings teacher Yin Sid.

It was there that he informed him about Mickeys predicament and went to rescue him in the place where he fought the masked boy. When the youngest of Eraqus charges got there none other than his teacher's colleague and Ven's old master Xehanort greeted him.

It was there that he told him of his role of fighting the masked boy Vanitas in order to form an all-powerful weapon called the χ-blade and unlocks the door to kingdom hearts, the heart of all worlds.

He also told him that master Eraqus knew this fact about Ventus, which was why he never let Ven visit any worlds during the time he stayed with him, the dark keyblade master then told him that if he wanted more answers he should ask his teacher before sending Ventus and Mickey away with a powerful gust of wind.

Which brings us to the present time as Ven got his head together and headed to the land of departure to confirm what Xehanort told him.

As Ven arrived at the land of departures courtyard master Eraqus at the front entrance greeted him,

"Ven? Is that you?" He asked as he walked up to the returned keyblader "where's Aqua, I thought she would have been with you, well it doesn't matter now as long as your safe, the world outside is a dangerous place afterall you need to stay here and train so you can be better prepared".

As the master of the land of departure said this Ventus snapped and said "what so you can keep me lock up in your prison where I won't get to see other worlds, not knowing what or who I am".

As Ven said this Eraqus was shocked but strangely asked "Ven who told you these things?" at this question his young charge said "master Xehanort did, he told me that I was to become some kind of χ-blade"

As soon as Ventus said this his master calmly said "I see, so Xehanort you couldn't let it go could you".

It was then that master Eraqus had a flashback to when his old friend told him about his plan to use the forbidden keyblade to open the door to kingdom hearts and reenact the keyblade war in order to find out what happened during the conclusion.

Eraqus not wanting Xehanort to create such a catastrophe out of mere curiosity drew his keyblade in order to subdue him but was overcome by the fallen masters powers of darkness and was injured with a scar on his left cheek.

Not wanting Xehanort's plan to come to fruition Eraqus made a decision and said "I failed to stop him then, but I will not let it happen again" it was then that the keyblade master of light did the unthinkable and drew his keyblade against Ventus who was too shocked to move and think straight.

Then Eraqus said "forgive me, but you cannot exist in this world any longer" as he unleashed a blast of magic chains from the tip of is blade to kill his student and prevent the χ-blade from being created.

However before the attack can connect they both hared a cry of "VEEN!" before Terra came falling from the sky in his armour and deflected the mystically created chains and shouted "Master!, have you gone mad".

His teacher then said "Terra stand aside" to which his student replied "no I won't" it was then that Eraqus emotionally said "why won't you listen to what I say, if you won't obey then you will have to share Ventus's fate" he then shed a silent tear and charged against his oldest student that was like a son to him.

As Ventus sat there and watched two people he considered family try to subdue each over he then cried out "Enough Terra he's right" but his brother figure replied "Quiet" before he blocked another blast of light from Eraqus's keyblade which sent the both of then flying to the otherside of the courtyard.

As Terra got back up with Ven in hand he then decided if he was going to beat his master and bring him back to his senses he needed to tap into the power of darkness that he was slowly building over his journey.

As he did this Eraqus said "has the darkness taken you as well Terra" to which his fallen student replyed "you may be my master but, I WONT LET YOU HURT MY FRIEND"

He then created a portal to the corridors between worlds and threw Ven into it were he would be safe to which Ven said "wait Terra' before he was sucked into the portal and flung into the sea between worlds.

Now normally what happens next is that Ven ends up at the destiny islands where he is greeted by the masked boy Venitas and told to go to the Keyblade graveyard to save his friends.

However the multiverse is a tricky thing in that there is an almost infinite number of possibilities that can occur from opening a pickle jar at the right time and place, to suddenly baring witness to a battle between resurrected heroes of old to fight in a secret war for a wish granting artifact, and trying to understand them all would either drive you to the depths of insanity or leave you with a few personality quirks like a certain blood sucking vampire troll who shall not be named at this time.

What happens here is that the keyblader Terra forgot to double check his math so to speak when he created that portal, combined with the fact that he was more of a swordsman then a magic user meant that the youngest student of Eraqus was flung to an entirely different destination then intended, therefore changing the destiny of not one but multiple individuals that he would encounter when he got to that particular world, and so the wheel of fate turns ever so slowly on the start of this journey.

Epicgamer484 presents

Fate/zero key blade of wind

Chapter 1: the first night

As Ventus was sent spiraling through the sea between worlds in his armor that he deployed earlier, he let his mind wander to a number of things, he thought about his friend Aqua and what she was doing during this time.

He thought about Terra who was the one that thrown him into that portal as he fought their master.

He thought about master Xehanort who told him about his destiny to form the χ-blade.

And finally he thought about the mysterious masked boy Venitas, who he was supposedly supposed to fight in order to form the forbidden weapon.

It was at this point in his inner thoughts that he realized something, although he had no basis for this, the masked keyblader seemed very familiar to Ventus, like a pair of shoes that you wore for a very long time or a jacket.

"Okay that's it" the young keyblader thought at the time "as soon as I get back I'm going to find that masked freak and drag whatever secrets he's hiding one way or another"

Now normally Ven was a very well mannered individual however with all the stuff that he had to go through over the last few days,

From fighting mysterious blue monsters of all shape and sizes called Unversed,

Finding out his best friend stole the heart (not the romantic kind) of a local princess, which he learned from a witch called Maleficent.

Learning about the whole χ-blade business and returning home to get answers from his teacher, only for him to suddenly attack the young keyblader,

And finally for the supposed princess heart thief (which he didn't believe for a second) to arrive in a big dramatic entrance in order to save him before causing his current predicament, he was more than a little bit stressed.

As he made his resolution on what to do next the wind user realized something that was bugging him for a while now "strange I don't recognize this sector, and the worlds I visited before are nowhere to be seen"

As he thought this he also noticed something else, the worlds that he could catch a glimpse of seemed really strange to him.

There were a mixture of Urban and Asian buildings in the worlds he saw and there was a huge mountain with a temple like structure at the center, but the thing that took the cake was the fact was that they all looked exactly the same to him.

Now Ventus was no expert on worlds (that was Aqua's thing) but even the young keyblader could tell that what he was seeing wasn't exactly normal and wondered out loud where the hell Terra sent him.

It was at this time that Ventus realized he was dangerously close to one of the worlds he saw a moment ago and there wasn't enough time to deploy his keyblades ride form and get to safety so as he was being drawn to it like a space rock being drawn in by Earths gravitational pull he could only think of one thing to say in this type of situation.

"Oh shiiieeeeeeeeAAAAAAAAAAAAAAAAAAAAAAGGHH" the young keyblader screamed out loud as he was sent plummeting towards the unknown world that he was heading towards. It was at this point that Ven was thankful for his armor that he was wearing at the moment to shield him from reentry but he got his key blade out and cast the strongest Protect spell he could cast to soften his landing and the strongest Aeroga spell to slow his decent, as he was shore he would be a splattered mess if he didn't, so as he finished reciting the two arias for the duel spell he braced himself for the inevitable.

(Scene break)

High above the city of Fuyuki located somewhere on the island nation of Japan, a shooting star could be seen in the night sky which some kids, a few love struck teens, and a certain brown haired girl camped out in the mountains whose name sounded like tiger made a wish on.

However what these unsuspecting people didn't realize was this supposed shooting star was a human sized armored projectile heading straight for the nearest source of water in the city which was strangely enough a few dozen meters near the shoreline of a bridge that a certain white haired German homunculus and her blonde haired, suit wearing bodyguard would visit the next day.

As the unconscious keyblader impacted the water, the strong pain from the impact suddenly waked him up to the world of the living as he found himself under water.

It was at this time that he frantically swam to the surface and ripped his helmet off to beneath in the much-needed air as well as coughing out the large quantities of seawater he accidentally swallowed.

He then swam to the shoreline and walked across the beach before collapsing on the soft wet sand as he observed the night sky in an exhausted state.

As he lay there for about 30 minutes his sense of self slowly came back to him and sat up to collect his thoughts.

It was there that everything came back to Ventus, from falling through the world's atmosphere to finally passing out from the pressure before waking up underwater to swim to the surface.

As he stood up he did a brief check of his armor before dismissing it along with his helmet that was in the water, leaving him with his soaked clothes.

He then did a brief check of his bodies condition and found it had a few bruises and strained muscles but nothing serious, but decided to do a quick Cure spell just to be safe as he was on an unknown world with the clothes on his back, some potions and ethers, and his trusty key blade which he can call to him at any time he wants.

Just as he recited the aria for the healing spell he contemplated on his next move in which he decided it was better to find a nearby inn or hotel to rest for the night, or a tree in the worst-case scenario as it was currently dark and it would be better to wait till tomorrow to plan his next move.

He then checked his munny reserves to check that he had enough for the inn and was shocked to find that they suddenly changed to notes and coins that were written in an unknown language, he then remembered something Aqua told him about the multiworld currency, apparently she told him that munny sometimes changes shape depending on the world its owner happens to visit just like what happened in Cinderella's world when he suddenly shrunk to the size of a mouse.

After counting the transformed money which came to a value of a couple hundred thousand, he noticed an old couple that was walking past the beach at the time an decided to ask them where the nearest hotel was however as he walked near he could hear them talking in an unknown language.

At this point Ven remembered something Aqua told him a while back that some world's feature different races of people that don't speak the same language they are familiar with,

So they have a spell that helps them understand the language so they can blend in with the populace without giving away their identity.

As he realized he didn't have his translation spell on he smacked his hand on his forehead and retreated to a location further along the beach where he cannot be seen to cast the spell, after all he's a keyblader charged with protecting the world order, so he cannot let anyone know he is from other world's.

And being able to magically conjure a key shaped blade out of thin air and cast magic defiantly counts as otherworldly.

When he finished the spell he decided to test it out on the couple he saw earlier which in luck he saw down the street so he ran up to them and said "excuse me sir, madam" which they heard and turned around to face the young offworlder "sorry to interrupt your walk but would it be alright if I could you a few questions".

It this point the male of the pair said " oh don't worry young man were more then happy to help isn't that right " to which his partner replied "oh sure dear of coarse well help".

After haring their reply he said, " Eh thank you very much…em do you know where the nearest hotel or inn is".

At this the male said in deep thought " hmm lets see I think there a few cheap hotels in the Shinto district across the bridge but im not shore as I don't visit there often is that right Martha"

He addressed the older female of the pair who replied " of course they were opened a few years ago but I think there's one that caters for foreign tourists here il write you the address on a piece of paper "

She then wrote down something on a piece of paper she got out of her purse and handed it to Ventus "here just hand this to someone and they'll point you in the right direction".

After pocketing the directions the teen said, "thank you very much sir, madam" he then paused and then realized something "oh sorry I was so tired I didn't catch any of your names I'm Ventus but my friends just call me Ven"

As he said this the older of the two replied "ah where are my manners I'm Glen Mackenzie, and this is wife Martha" to which the named woman replied "nice to meet you Ventus-kun".

It was then that Ven said in confusion " kun?" as he hared the unfamiliar word at the end of his name

To which Martha said "oh sorry do you not know what honorifics are?" the world traveler's confused face was all the older woman needed to answer her question.

Then Glen laughed, "ha ha ha sorry Ven, Martha here just wanted to confirm if you knew what Honorifics were" at this he paused and said "are you a tourist by any chance"

At this unexpected question Ven replied quickly "eh? Oh shore I actually came here to visit some relatives but I accidentally got lost so I decided to stay the night somewhere and try my luck tomorrow"

It was a quick lie sure Ven thought but he was technically a tourist so at least that was true

To which Glen replied "oh I'm sorry to hear that, it must be very brave of you to wonder about like this at your age, well Honorifics is an extension of the language the Japanese use at the name of peoples names as a sign of respect and good manners, the word Martha used kun is used by older people like us to refer to younger people like children and teens.

At this he gestured his wife to continued "there is also san which is the most used honorific when other people speak to each other, sama which is a more respectful version of san and is used by people when referring to people of high stature, and sensei which is used by students when referring to their teachers or patients talking to their doctors, did you get all that Ventus-kun"

After the two finished giving Ventus a crash course in Japanese etiquette the stunned keyplader replied " oh yeah I did, thank you very much Glen-san. Matha –san"

To which the male of the two replied " oh don't worry Ventus we were happy to help" it was then that the aged man had an idea and said "actually Ven do you want to stay round out house for the night as its getting late and I don't think its good for someone like yourself to be out this late by yourself"

At this time Ventus was stunned speechless at the old mans suggestion and went into a frenzy of thoughts on what to do next "are you shore its alright for me to spend the night, after you just met me and I don't want to impode"

To which Martha replied "nonsense Ventus-kun you wont be any trouble at all and like Glen said it's dangerous to be out this late, especially with that serial killer on the loose"

"Serial killer!" now this got Ventus attention as completely unaware of the rogue murderer up until now,

If this were true than he would have to be extra careful when traversing this unknown city as he was sure there would have extra police patrols at this time and he had no intension of getting involved if he can help it.

While making a mental note to ask the Mackenzie's about this serial killer later the young keyblader made a decision "thank you Martha-san, Glen-san I would love to stay for the night if it's not to much trouble"

To which Glen replied "wonderful, okay then come along Ven-kun our house is this way" after walking with them for a bit he suddenly said "actually Martha isn't Waver-kun supposed to be back with Alex-san at this time"

After Glen finished Martha said, "I think so dear, they did say they weren't doing anything important tonight".

When he heard the unfamiliar names Ven said "em Martha-san who are Waver and Alex"

At this the older woman said "oh silly me, sorry Ven-kun we should have mentioned them sooner, you see Waver-kun is our grandson who came to visit us for the week, since he was on break from his school in London, his friend Alexander-san or Alex-san as we call him, they usually stay out late but not today as they didn't have anything to do".

After she finished Glen said "hope you don't mind bunking with them tonight Ven as unfortunately we don't have a spare room for you".

Ven quickly said "oh its no trouble at all Martha-san, id hate to impode", as the youngest keyblader walked with the elderly couple his mind drifted slightly to Terra and Aqua and what they were doing at this time.

Disclaimer: I do not own the characters featured in this fan-fic, kingdom hearts and fate/zero are the property of Square-Enix, Disney, and Type-moon respectfully.