What's up? It's pretty much like the description said: My OC is the heir to an old mage family and is chosen to be in the Grail War for... reasons that you will find out. There will be a new Servant Class that Destiny's Saint-14 will be filling (that's why Exo is written up there, seeing as Saint-14 is not an official choice). Watch as this new addition to the Fifth Holy Grail War alters Fate to yet another route (just to be clear, I am going off of the Ulimited Blade Works route).

The story is rated M because it gives me more leeway to do stuff than otherwise, and also because FSN is filled with stuff that warrant it (I'm looking at you Gilgamesh- stealing girls' and shit. You just need to calm down, man!).

Also, in this fic, there will not be much content from Destiny that will crossover to FSN that isn't in some way linked to Saint-14 as a Servant (e.g. there will be no random Vex invasion, and other guardians will not show up during the actual storyline portion -some flashbacks will though-).

This Fic will be mostly serious in the regard that Destiny content will be treated as a story and not a game (e.g. Saint-14 talking about "leveling up" or how guardians attack on the same missions over and over agian to get loot.)

Just a warning: this is my first Fanfic.(Also the prologue is a little rough compared to the actual chapters in this story, so please bare with it if something seems a little off in the beginning.)

Disclaimer: I do not own Destiny, Fate/Stay Night, nor any of their characters.

(Deep in the Vault of Glass)

The Light "fence" around the Sync Plate fell away into nothingness. A curse was heard from the Warlock directed at a large robot husk at his feet. Why did this have to happen? Everything was going so well until now, He thought, kicking the shell of the dead Vex Praetorian for further emphasis. While doing so, he heard the Hunter gasp at something, and the Warlock could see why. Looking back at the Gate both of the guardians' attention was completely taken by an ominous, red light floating in the air. It was an Oracle: an omen that never boded well for the followers of the Traveler or any other race that wasn't Vex for that matter. And at this very moment, it hovered right over the Gate archway and there was still inside- the team's leader. The Warlock cursed again as the Oracle brightened let out a pulse.

(Inside the Gate)

As soon as coms went done, the heavily armored Titan immediately figured something was wrong and was bolting to the Relic. The guardian got within arms-reach of the floating artifact when he felt a pulse surge out from the Gate. Instantly, the Titan felt the pull on him. He desperately clawed for the Relic, but the gravitational force would not let go of him.

"Knocker! Take us to orbit!" The Titan bellowed.

"I can't! We are in another time and the connection through the Gate has been severed!" His Ghost shouted back.

The guardian yelled his heart out while giving one last futile effort to grab what was right in front of him before he was forcibly sucked through the air and into the rogue Gate.

(Outside the Gate)

The Gate's energy flickered for a few seconds, but was finally snuffed out. Both guardians in the room could do nothing but look on in shock and despair at what they had witnessed. Even as the Oracle turned its attention to them to banish them from the Vault, they could only think of how their fireteam leader had just been flung to the corners of Time. Something that could not be undone. Not by the guardians. Not by the Ghosts. Not by the Traveler. Maybe not even the Vex themselves could save the Titan even if they had a reason to.

The guardian had been lost.

(Back on Earth, In the Grassy Plains of the western part of the Old United States)

The night's sky shined above the flat plains that were once part of the Old United States of America. The wind howled unimpeded across the land. Almost nothing stirred in the light of the full moon. Ever since The Collapse, typically nothing more than birds came around this part of the world anymore. The one exception to this grave fact was the lone figure wrapped in black shrouds who hobbled almost aimlessly across the flatlands, all-the-while muttering things to nobody but himself.

Suddenly the figure stopped walking and turned glowing, yellow eyes to the heavens as if something called for his attention.

"The Will of the Nine has been fulfilled… May this guardian's life prove pleasing to Them."

Part 2

(The Matou Residence, 1 Month after the Fourth War for the Holy Grail)

In the dark crypt underneath the large mansion, cackling could be heard. It was a terrible sound signifying a triumph by the hand of someone something with no good intentions. If someone were to witness the scene down where no light dared to touch, they would have seen a small, ancient looking man with pail skin and dead eyes looking over a pit of sloshing water.

Zouken Matou (formally known as Zouken Makiri and Makiri Zolgen before that) had a sinister grin on his face and was currently congratulating himself with his latest prize. He finally took a breather from his twisted laughter and began to speak to himself.

"I can't believe my luck! I had begun to think that nothing would be gained from this war after my so-called "son" got himself killed." He shook his head and let out a sigh. "Oh well… It's not as if I expected Kariya to win anyway- the weakling. And now that he's dead, I guess I have no choice but to continue with the plan. Isn't that right… Sakura-chan?" His grin widened some more as his eyes grew even colder while looking down into the pit.

What was previously thought to be choppy water was in fact a writhing pit filled with worms. These were Crest Worms- the special magic of the Matou family. These vile creatures are able to produce Prana at the expense of their host, which is why that they are often remarked as unethical by anyone that had the displeasure of having any experiences involving them.

But Zouken did not care. He would use any means to reach his goal of obtaining the Holy Grail, and an example of how low his morality was lay right in front of him. In the middle of the disgusting worms was a child- a little girl no more than perhaps 6 years of age. She had short, purple hair and a slight body that was naked at the moment. She did not move a muscle. Maybe this girl was scared. However, her face did not display a drop of emotion, and behind her clouded violet eyes, was a broken soul. This was Sakura Matou- formally Sakura Tohsaka before her father had given her to Zouken since the Matou's could no longer birth natural mages any more. She hadn't known what to think about any of it and still didn't. And now, after all that Sakura was put through, she just accepted her cruel fate as she lay in the pit, Crest Worms caressing and probing at her nude form.

Zouken continued to talk.

"Since that fool couldn't come through with his part of the bargain, you will have to win me the Grail- or…had to rather- if it hadn't been for that idiot Master! Hahahahaa!-" Zouken's body racked with cackling again.

"Who would have thought that there would actually be a fool that would deny the Holy Grail and their chance to make a wish?! Hahahahaha!- Those Einzberns must be absolutely pissed at that! Hahaha!- And serves them right for hiring a mercenary instead of actually fighting themselves, those stuck-up alchemists! Hahaha!-" Zouken's terrible laughter went on for a bit more until finally calming down.

"Although, I do wonder what made the infamous Magus Killer order his Servant to destroy the Grail. Hmm, maybe he was sore that he lost that homunculus in becoming a Lesser Grail?" After a moment Zouken shrugged. "It matters not. What matters now is that I finally managed to gather the last of the shards."

When Emiya had ordered his Servant, Saber, to use her Noble Phantasm to destroy the Holy Grail for whatever reason, it had only succeeded in destroying the magical artifact's physical shell. The Holy Grail will merely have to form again sometime down the line in another war. What currently held Zouken's attention, however, were the shards of the broken wish-granting cup that had been left in the burning aftermath of the finale to the Fourth Holy Grail War. Zouken had found the shards when searching the battlefield for anything of interest- and found something he had.

Over the course of the weeks following the war the head of the Matou had collected the priceless shards of pure Prana. It had taken longer than he would have preferred, but he had to make sure to avoid the chance of someone seeing him- be it non-magical authorities investigating the fire or another Magus. As each piece was collected, he implanted them into Crest Worms, and then had those same worms implant themselves into little Sakura. What he was hoping to achieve was making the girl into a Lesser Grail. While Zouken may not have been the one who formed most the first Grail's foundations (no, that had been Einzbern), he still contributed to much of its creation and felt confident in making a Grail to serve his purposes.

Zouken raised a hand to his eye-level and stared in satisfaction. A single Crest Worm slithered circles in his pail palm. It was not much different from others of its kind aside from a slight glow emanating from its form. This worm contained the last shard to the Grail. It was the final piece to making his dreams reality.

The raised hand shifted until it was above the surface of the horrible pit, and after a second abruptly turned over, letting the shining worm fall into with the other Crest Worms. Zouken's eyes tracked the slithering creature, following its glow. It went straight to Sakura's still form and stopped, circled it once, and then stopped again on the girl's right side. Zouken frowned for a moment wondering if something was wrong, but his thin lips turned back upward when he saw the Crest Worm jump onto Sakura's abdomen and rapidly burrowed into her flesh by using its razor-sharp teeth. The girl's face twitched and a sad sound of a pathetically soft whimper escaped Sakura's mouth. Quite a bit of blood gushed out of the new wound before the flesh knitted back together to its restored condition. Zouken's stare did not blink as he awaited for any reaction to signify either success or failure.

After a few minutes nothing happened. The room was remained as dark and silent (aside from the worms' slithering) as before until Sakura's body began to glow. The Grail piece had been accepted and was now "complete"! Zouken could only smile darkly as he turned and walked away, his cane and sandals echoing off the crypt walls.

"Excellent… Now, I merely have to wait for the next war. A trivial material. I can wait… But can Sakura?" He said lowly to himself as he arrived at the base of the stairs leading up. "Yes, I'll make sure of that. I will not lose an opportunity have my wish granted for a fifth time."

The Matou looked back at the still-glowing form of the little girl. He would leave her in the pit for a week to make sure she was stabilized.

"You have done gooood today Sakura-chan. You will be the key to fulfilling my goal. I'm leaving now, but I will be back to collect you later. So sleep tight, and don't let the-" Zouken's snarky comment was cut off as a huge magical pressure suddenly assaulted his senses.

The crypt shook like an earthquake. The Crest Worms in the pit screeched in pain. Even Zouken was being affected by this anomaly and was on his knees, finding it hard to maintain his physical form as the suffocating power pressed down on him.

What the Hell is going on?! He thought as his mind ran through the possibilities of what was causing this. Then his eyes widened and his head jerked up at Sakura. The Lesser Grail. It has made contact with the Greater. This was to be anticipated, but why was this happening? Did I get something wrong while implanting the worms? His stoic face turned into one of slight panic.

The room continued to rumble for another 5 minutes until it climaxed in the form of a bright flash of light, which the pressure then dissipated after. Zouken checked over himself to make sure his "body" was still in working order. After a quick once-over, he found to his relief that nothing was out of place. Zouken then stood back up, slightly regaining some of his previous composure, and walked back over to Sakura. She was no longer glowing, and was visually fine otherwise.

Zouken put a hand to his chin in contemplation. "Hmm. It would appear the Greater Grail has accepted her existence… but with the reaction that was returned, I would have to say that the Lesser might have also changed something in the Greater… But I don't understand! Why did that happened! All of the parameters were met!" He shouted out.

The ancient man thought about possible explanations to the reaction unsuccessful for about 20 minutes. He looked over Sakura again. She seemed healthy, and the Lesser Grail she contained was still there. Zouken closed his eyes in deep thought. He didn't like what happened. It didn't spell anything good for him. Somehow, the Lesser Grail managed to successfully tamper with the programming rites of the Greater and change something. This could prove to be trouble in the future when the time came to make his wish. On the other hand, whatever had change may not affect him and his use of the Lesser Grail in any way. Plus, if he attempted to fix what had been changed, he might either find that he could not revert it to what it once was and/or the attempt may prove fatal to him and his wellbeing- not something he was willing to risk easily.

Zouken let out a breath and opened his eyes as he made his decision. He turned and headed back toward the stairs as he spoke.

"I don't know what happened, but as long as it doesn't stop me from making my wish, my plans will remain the same."

(Inside the Lesser Grail)

Inside Sakura's form, on another plane of existence, a demonic laugh roared loud. It was the reason for the Holy Grails recent "destruction". It was the spirit that had corrupted the once morally-colorless, wish-granting device. This was the spirit of Angra Manyu, Servant Avenger of the Third War for the Holy Grail and bearer of the world's hatred in its entirety.

At the moment, this evil spirit laughed at its sense of accomplishment. First, Kiritsugu Emiya refused to make a wish, infuriating Avenger. The spirit literally cursed the man for such impudence. After that, Avenger had to seek for another wish from the dying priest, Kirei Kotomine, and his wish had been utterly GRAND, "to end all of humanity". It was like a dream come true! But even as the black mud poured from the Greater Grail to consume everything, Emiya proved to spite him yet again by ordering his Servant to destroy the object in which he had resided! The energy released by the Saber Servant proved to be too much and tore the Grail apart. The black mud halted its spreading, only taking out a single city district! UNACCEPTABLE! As the shards of the wish-granting device lay scattered, Avenger had feared that it was the end and cursed the world as his power slowly faded.

But then that old bag of bugs came along. He had collected the shards of the Grail one by one and put them into some unfortunate girl through the use of worms- a disgusting method that Avenger would surely remember and pay back if and when "Zouken" made his wish. Alas, that would have happened if he planned on staying, which he didn't. Avenger's essence was now finally whole again and he meant to immediately return to his place in the Greater Grail.

However, when he attempted such an act, Avenger found that he could not make the transition. The damned Magus had unintentionally fucking trapped him in this pathetic child's body! Avenger was a raging volcano of anger and it probably showed in the world outside. WHO THE HELL DOES THIS CREATEN THINK HE IS?!

After a while (to him. Time works differently inside the Grail), Avenger settled that there was no foreseeable way to escape these confines at the moment. He would just have to wait for a time when an opportunity presented itself. So instead, he chose to take advantage of his current position.

Even though he couldn't do anything about his position at the moment, Avenger could still make contact with the Greater Grail. And what better way to use this opportunity to make the world suffer than to use this extra Lesser Grail to make some adjustments to the Holy Grail War's rules? NOTHING! THAT'S FOR DAMN SURE! He certainly knew how. He had spent over 60 years in the blasted thing- not to mention that that time felt longer inside of the Grail. Oh yes. With this power he would make the war even bloodier and make reality a crueler place for all that came into contact with it. This world deserved it! However, when he looked over what he had to work with, Avenger found in anger that there was hardly enough energy inside this Grail to make a one-time change and it would only result in adding a single servant to the "summoning roster" of the Greater Grail.

"It will have to do… for now" Avenger said irritably even as he overwrote the rites comprising the Greater Grail. "I certainly hope it will at least be more entertaining, watching them panic like headless chickens and scratching their heads, trying to figure out what the fuck's happened! Hahahaha!" Avenger laughed out as he completed his task.

The next war was assuredly going to be interesting.

Well, that should be a good start. Hello there reader. This story was inspired by a fanfic post on Destiny's official website that described a fan's version of the legend of Saint-14. After reading it, I thought it wondered what would happen if Saint-14 was summoned as a Servant in the Fate/ series. I was so intrigued that I made a Servant Stat Sheet that same night and PMed the story's author. He thought it was great and that encouraged me to right this- MY FIRST FANFIC.

This is my first fic I have every posted so I apologize in advance for any formatting or grammatical errors. If such errors occur, please leave them in a review. I may have trouble in the future with how consistent I post a chapter, but I have about five chapters outlined at the moment so I doubt I will give up easily.