(Disclaimer: I do not own Fate/Stay Night or Kamen Rider Wizard. I just own my OC, this idea which might become a story, and nothing more. Please enjoy.)

Fate/Stay Night: The Ringed Berserker

Wind. Snow. The makings of storm in the mountains. The frigid temperature that would have brought even the toughest men to their knees in minutes. The hungry wolves and bears that lurked in the forest, waiting for any prey to eat so they could have their fill and survive in these extreme, harsh conditions. This is where the Einzbern mansion, a building of such high class, was located. The conditions outside were why the mansion was even built there in the first place. The storm covered the place from the visible eye depending on the conditions of the weather during the winters, allowing no one to see the works of the inner workshop of a Magus.

In complete contrast to the raging, freezing storm outside, the inside of the mansion was calm and warm. The fireplace and chandeliers lit the place up with warm and bright lights. To a normal occupant, the place would have felt like a really big and cozy home. Too bad the qualities of the place would not be appreciated for the owners of this mansion were in fact Magus, people with the ability to use magic.

In the basement of said mansion, all was dark. A great amount of space was everywhere. In fact, the room was completely barren of any furniture, pictures, nothing really. Just cold brick that made up the place. It was here that we find three people, all female, standing in front of a red circle filled with markings. At first glance, these three would have passed as normal humans, when in fact they were homunculi, artificially made human beings.

The first was a girl who appeared to be 8-10 years old, but was in actuality, much older than she appeared to be. She has crimson eyes and long white hair. She wears a collared, purple long-sleeved shirt with a light purple scarf to match, a long white skirt and purple boots. This is Illyasviel von Einzbern, one of the seven masters that would be participating in the Holy Grail War that was only two months from now.

Besides her were her maids, Leysritt and Sella. By appearance, they looked exactly the same and were much older looking than Illya, but in reality, they were 2 years old. They both wear maid outfits along with hoods that hid their hair, making them more identical. The only thing that set them apart was that Leysritt's breast size was much bigger than Sella's.

"Is everything ready?" Illya asked her maid, Sella.

"Yes, everything is ready for the summoning, mistress." Sella said. Finally, the day had come for her mistress to summon the thing that would allow her to win the Holy Grail War.

A Servant. Now despite the title, a Servant isn't actually a servant, rather a Heroic Spirit, figures from times long ago that have left their mark on Earth and are still remembered today. Examples being King Arthur and Alexander the Great. Servants were beings that far surpassed human beings and even Magus in terms of ability and power.

"Mistress," Sella spoke up the minute Illya stepped into the magic circle. "Are you sure you do not want to summon the Heroic Spirit, Heracles?"

Heracles, or Hercules as he is most known as in the west, was to be the first desired Servant that was to be summoned and to aid the Einzbern in their everlasting struggle to obtain the Holy Grail, the magical, golden prize that is said to grant any wish. However, before the summoning was to begin, Illya had revealed that she had different plans, one that did not involve summoning the legendary demi-god himself.

The desired Servant to be was to be materialized into the Berserker Class where the Servant would obtain the Mad Enhancement, an ability which trades the Servant's consciousness and sanity for a large power boost. Servants usually summoned into this Class usually had insufficient 'stats' that did not bold well for the Master so the Mad Enhancement was used to make up for that. But with Mad Enhancement combined with an already powerful Servant, it didn't take a genius to know that a Servant like that would give anyone an edge in the upcoming war. So to hear that Illya was not planning on summoning the great demi-god concerned Sella.

"No. I don't need a meat head like Heracles, rather someone who will aid me in more ways than one." Illya said. While she is to be the Master in the upcoming war, she had a second mission she needed to complete, a personal mission.

Ten years ago, her mother, Irisviel von Einzbern, along with her father, Kiritsugu Emiya, participated in the Fourth Holy Grail War. Her mother, a homunculus like her, had become the Holy Grail, the prize every Master in the Holy Grail War sought. But her father had chosen to destroy the Holy Grail, dashing away the hopes and dreams of the Einzbern. But instead of returning to the mansion, he stayed behind in Japan, never once returning for her. Years passed, yet Illya never once saw her father and it was during those years that Illya was forced to take care of herself.

But news then made it to her. Her father had died, but this news didn't affect her. Years of being alone had made her stop caring. But that wasn't' the only news. It turns out her father had adopted a son named Shirou. It was that news alone that made her keep going because to her, the boy was the reason why her father never came for her. To her, the boy known as Shirou had stolen her father away and that was something she would not stand for. So with those thoughts in mind, she planned, she trained, and most of all, she endured. And during the years of her struggle, a thought had entered her mind.

Sure, while having the great Heracles would be better than great, she felt that she needed something else. Something besides overwhelming power. She needed someone who could understand her, her pain, her loneliness, and aid her in ending the life of her adopted brother in the most cruelest way possible. So with that in mind, instead of using the stone slab that would summon the mighty demi-god, she would be the catalyst in order to summon a Servant just like her a Servant that could relate to her and aid her. So with that, she stepped onto the Summoning Circle, her Command Spells appearing all over her body, and began to chant.

Silver and Iron to the Origin.

Gem and the Archduke of Contracts to the Cornerstone.

The Ancestor is my Great Master Schweinorg.

The Alighted Wind becomes a Wall.

The Gates in the Four Directions close, coming from the Crown, the Three-Forked Road that leads to the Kingdom Circulate.

Shut (Fill). Shut (Fill). Shut (Fill). Shut (Fill). Shut (Fill).

Repeat every Five Times.

Simply, shatter once filled.

――――I announce.

Your Self is under Me, my Fate(Doom) is in your sword.

Yet, thou serves with thine eyes clouded in chaos.

Thou, bound in the cage of madness. I am she who commands those chains.

In accordance with the Resort of the Holy Grail, if you abide by this feeling, this reason, then answer.

Here is my oath. I am the one who becomes all the good of the world of the dead, I am the one who lays out all the evil of the world of the dead.

You, Seven Heavens clad in Three Words of Power, arrive from the Ring of Deterrence, O Keeper of the Balance―――!

Hearing the Incantation, the Aria, the Summing Circle glowed red and got to work. Now a spell such as this, where the Master pours in mana and uses a catalyst in order to summon a Heroic Spirit, is not enough. A spell such as this would require a great amount of mana from not just one, but hundreds of people. So in order for Master's to successfully have their Servants without having to trade so much mana, the Holy Grail itself did the heavy lifting while the master provided mana which would then link both the Master and the Servant together for without the Master, a Servant wouldn't be able to live for a single day as they are made entirely out of mana.

Now with the Summoning Spell itself, a catalyst must always be provided and since Illya was using herself, the Grail identified her as the acting catalyst and began to find the perfect Servant for her in the Throne of Heroes, a place outside of space and time itself. In another world, she would have gotten an Assassin, a Counter Guardian whose true identity was her dead father; in another she would have gotten an Archer who was a future version of herself and was a 'Counter-Counter Guardian' who was also a kissing demon. But in this world, Illya would not be getting neither Servants. In this world, the Grail searched everything about the Homunculus. Her personality, her history, her inner, buried thoughts just so it could send her the perfect Servant, and it was then that it found something within the little girl.

Loneliness. The girl, while she didn't show it, was extremely lonely. Abandoned by her parents, the harsh, painful training, all the expectations dropped onto her, despite the fact that she was older than she appeared, Illya still had the mind of a kid(somewhat) and the one thing a kid always needs was the love and warmth of another. So the Grail, despite the fact that a certain 'evil' had corrupted it, was feeling pretty generous today. If the girl wanted someone who would love and care for her, then she would get that someone. And with that, the Grail searched within the Throne of Heroes. While there were millions who could have cared for the girl, the Grail remembered that the selected Heroic Spirit would be materialized into the Berserker Class which meant the Servant would lose its sanity the second it materialized into the world. And that would not do.

So instead of searching through the Throne of Heroes, it searched out into the universe. How? Because magic bitch. Just roll with it. It searched and searched, until it came upon a unique individual. Hmm…yes, yes! This boy will do just nicely. And good news for it, the boy was already dead so it could just pick up its spirit and fling him over.

And with that, the Servant was set and on its way to the girl. She better be grateful for this Spirit could turn out to be a better option than summoning Heracles.

Back with at the Einzbern mansion, Illya had just finished the Aria and five seconds later, the circle released a small shockwave that kicked up some dust. The shockwave was so small and weak that it didn't harm nor faze the three homunculus in the room. Illya had expected for an unknown person to appear before her once that little shockwave flew, but instead, she found herself still alone with nothing, but her maids.

What happened? Where was her Servant? She had said the Incantation correctly, there were absolutely no flaws. It was perfect, flawless. Yet, Illya spotted no sign of her Servant. Had…Had she failed? She, the strongest Master among Masters? After all her hard work, all the pain she endured, all the plans she had prepared, she had fai-!?

*BOOM!*

Illya's thoughts were put on hold when something from up above the three shook the entire mansion.

"An intruder!?" Sella guessed as her sister, Leysritt, jumped into action and raced up the stairs, leaving Sella and her mistress to chase after her. Once at the top, Leysritt didn't hesitate to kick down the door in front of her as Illya and Sella caught up to the two year old Homunculus and gasped at what they saw.

The living room was a complete disaster! Tables were turned, windows were broken, broken pieces of vases were on the floor, paintings were ruined and destroyed, curtains were ripped apart, and one of the chandeliers looked ready to fall down.

Sella was absolutely horrified! This mess…this mess! She and Leysritt would have a fit cleaning all this up. Well, she was, Leysritt probably didn't care. But while the maids were busy looking at the destruction, they were a bit late in seeing the cause of all this. Fortunately, Illya quickly saw the source and soon, her maids saw the perpetrator.

It was a man, a Japanese man who couldn't have been more than 17 years old. His hair was black as a raven's feather, the color matching his clothes. He wore a black trench coat over a black suit, black tie and everything as black dress shoes completed the look. To Illya, it was like she was looking at her father again for the teen in front of her, who was sitting on her couch like he was some sort of hot shot, was dressed the same way as her father. Around his waist was a belt with the belt buckle taking the shape a right hand. Lying next to him to his left was a two handed sword sheathed in its scabbard, the handle wrapped in bandages as the guard was golden and clean. Judging by how long the scabbard was, the blade must have been as long as how tall she was. In his hands were rings. In his right hand was a silver ring that depicted a black, right hand, just like his belt buckle. In his left was a big Ruby embedded in a silver casing and had a visor for some reason. The Ruby was big enough that Illya bet it would attract the attention of a certain Tosaka heiress. Finally, the teen opened his eyes and for some reason, Illya expected to see red eyes.

But instead, she got the color of blue, so light in shading that it matched a baby's blue blanket. The color looked gentle, but the teen looked anything but on her opinion.

The teen then blinked once. Then twice. Then three times before he looked around the messed up place. He then turned back to the three homunculus and finally spoke.

"Um, not to be rude…but where the fuck am I?"

Let it be known that from this day, this was the day Illyasviel von Einzbern summoned Halkeginia's most feared man, the Mage Killer, the Jewel of Hope, the Diamond of Justice, the Yubiwa no Mahoutsukai…

Kamen Rider Wizard aka Haru Yamamoto.

Master of Berserker: Illyasviel von Einzbern

Servant Berserker: Haru Yamamoto

Welcome to the Holy Grail War.

And done! That's right people, Wizard Haru in Fate/Stay Night as Illya's Servant. All Magus beware. This idea had been swimming around in my mind so I wanted to get it out. Unlike my other ideas, I don't know whether or not I should do this. It's more of just for fun really. I hoped you enjoyed it nonetheless. Anyway, this has been Ashbel Longhart here, signing out.