Hi! This is my first FanFic ever. I always had this idea, but I never saw story with such plot, so I decided to try writing it by myself. Please, read, correct and review.

P.S English isn't my native language, so forgive me for bad grammar.

Of corse I DO NOT OWN Persona or Fate.

"Holy Grail War.

War of seven Magi to obtain Omnipotent wish granting machine.

Its participants have a variety of desires. Most common is to achieve the Root. Other wish for immortality, True Magic, improvement of their magecraft, fame, love, wealth and many, many others.

Yet, why am I participating? I never wished for anything. Never felt any joy. No matter what I did, I felt satisfaction. Praying, training, working as executor, learning magecraft- all was meaningless. So why I received this Command Spells? My Teacher told me that I must possess some wish to participate in this War. But what it is? Salvation? Meaning of my life? Goal to achieve? Death? Please, o Lord, guide this lost sheep to the rightful pass! I pray to your mercy!"

Such was thoughts of Kirei Kotomine when he was preparing to summon his Servant into this world.

He knew his mission. He must summon Assassin and spy for enemy Masters, while his teacher's Servant will defeat them. He never doubted strength of Gilgamesh of Uruk, world greatest legend. With the prana supply from Tokiomi Tohsaka, the heir of one of the Three Founding Families, Grail War was already won. But something disturbed him. First of all, can they control King of Heroes? He is the oldest king in the world and certainly very arrogant. Second, Tokiomi-sensei was sure of his victory. Even so some other Masters was very dangerous individuals. For example: Kayneth El-Melloi Archibald, the genial lecturer from the department of Spiritual Evocation. Also there was Kiritsugu Emiya- terrifying Magus Killer.

Kiritsugu Emiya. This man was anomaly. What was his motives? Why was he risking his life on countless battlefields? Maybe if Kirei met him…

"Enough thoughts"- Kirei told himself- "time to begin ritual".

And so, he chanted:

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.
In accordance with the approach 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 ―――！

Then, after flash of light, he heard:

"Your Servant- Saver, has come. I ask you, are you are my Master?"

When was the last time I was in the human world? And how much time has passed? Second? No, no I am sure it was infinity. It is so hard to keep track of time in the world of concepts and dreams. In the realm, where Angels, Gods, Heroes, Monsters, Demons and other "myths" resides, such things as "time", "age", "death" and other "normal" concepts never existed. It was easily shaped by wills of its residents. Angels was building temples and monuments in the honor of The Lord, that any sinner, who would see such magnificence, would immediately repent in all his crimes. Demons were creating such sinister buildings, that any weak man will get a heart attack from one sight. Gods built such palaces and temples in their honor, which no mortal could imagine. Heroes spend all their time in the Throne of Heroes, where they talk and fought with each other.

Such was Sea of Souls, were all legends and stories born from Man or World, reside. And I am it's supreme ruler.

It is not a boast or simply words. It is true. And I dislike it. Since the day my world ended (not from someone's plan, but because its time has come) I only wished for eternal tranquility. I was denied this of course. Demons, Angels, Gods and others were constantly fighting. And by "fighting" I mean that they created and destroyed universes just to resolve their conflicts. Or simply tossed them at each other (I am serious). Someone had to calm them down. Of the most reasonable residents told me, that only I can do it. "Many of the like you, serve you, respect you or merely terrified of your power"- they told me. It is also true. I was able to become one with the world ( as in "All Existence"). I understood all its laws and foundational principles. And was able to surpass them. "This is impossible"- I was told. I merely remembered phrase of my old acquainted- "Nothing is outside the realm of possibility for you." So I act as a mediator of The Sea of Souls. Calming everyone with words or force, if needed. This was how I lived till now.

Someone wished to summon me. That was strange, but I was able to feel that summoner need help. So I let myself to be summoned. As ritual was working I received knowledge about this world (my Personas could tell me all this information) and war of seven Mages, no "Maguses". Hump, is this not the world man with the diamond sword was taking about? Anyway, that War was wrong. Instead of cooperation to achieve the Root, this people were fighting with each other. But he can't blame them for this. Selfishness, greed and egoism were humanity's basic emotions. It is hard to resist them. And it is easy to judge somebody because of this. That is why I will not judge them, but try to convince them of the wrongness of their methods and acts.

My materialization is complete and so I say:

"Your Servant- Saver, has come. I ask you, are you are my Master?"

Kirei was surprised. He expected to see Hassan-i-Sabbah, the usual Assassin. Instead, the boy stood in front of him at the age of 16-17 years old, with blue hair and gray eyes. Boy was wearing black school uniform and red bandage on one of his hands. Maybe he did something wrong? Then he looked in boy's eyes and changed his mind. Boy was calm and relaxed; he wasn't surprised by this situation. So he did summoned a Servant. But was he Assassin?

"You are not Аssassin"- said priest.

"No, I am Saver" – answered boy.

"Saber?"- That was surprising. He summoned Saber? That would give them big advantage in Grail War.

"Not SaBer, SaVer"- Answered boy without any annoyance.

"There is no Saver class"- this was true. His teacher told him about 7 classes. He also told him about Avenger of 3 War. But Einzbern was cheating and he wasn't. So how?

"Unique Class"- told boy- "I'm suited for this class the most"

"What hero are you? What is your name?"- it is doubtful that his Servant will tell the truth. Since True Name is very important in War of ancient heroes, masters usually learn servants identity either from catalyst ,or through dream cycle.

"I have not famous legend or story about me"- was his reply-"And my name is Minato Arisato".

Servant without a famous legend? This was bad. Then his servant was very weak. Besides, Minato Arisato was Japanese name. And Grail allows summoning only of western heroes. Strange. Anyway, I must check his status. Nothing impressive I believe…

Kirei was surprised yet again.

"We won this War"- such was words of Tokiomi Tohsaka, the heir of the great Tohsaka family, when he summoned Gilgamesh. Heroic Spirits's power determined by fame and age of his legend. Then it is only natural that King of Heroes, The First Hero was strongest of them all! With such power and assistance from the Church, Tohsaka family will win this War and reach the Root! It was already decided, but he will show respect to his colleges- Maguses, and fight them with all his powers.

Now he was sitting in his workshop. Soon his student will arrive with his servant, Assassin, and they will be able to make their plans.

"Teacher, may I come"- or, so Kirei already came-"Of cores Kirei, come in"

Kirei was same as usual. Same Church clothes, same brown hair, same stoic expression. Such face was giving Tokiomi chill. Something was definitely wrong with Kirei, but he was grown man and can dill with his problems himself.

"So did everything was good with summoning ritual? You summoned Assassin?"- asked magus.

"About that…"- begin former executor, but was interrupted.

Near Kirei materialized a body. It was boy 16-17 years old, with blue hair, friendly and angelic smile and gray eyes. He was wearing some civilian clothes. Was this school uniform?! Tokiomi would have thought that it is some kind of joke, but normal people can't appear from air. So it was a Servant. Maybe school uniform was some clever disguise?

"So this is Assassin"

"Saver"- replied the boy.

Eh!

"Unique Class"- answered Kirei -"He is suited for this class the most"

What? How Kirei could summon hero in Unique Class. Was he cheating or did he make some mistake?

"No, I wasn't cheating and did ritual correct"

"No, he wasn't cheating and did ritual correct"

Told both of them. It didn't help that their faces never changed during their dialog.

"Can I look your status"- I said politely to the boy. I begin forgetting that boy still was Heroic Spirit. Angering him will be dangerous

He nodded. So let me see…

Tokiomi Tohsaka was terrified. What monster did Kirei called from Throne of Heroes! His Parameters and Skills were insanely high! The treacherous thought came into his head- "He has a chance to beat Gilgamesh". Technically it was good news. But now he will be much more careful around Saver. Fortunately he was able to hide his emotions. No need to anger that monster.

"Let's go, my student. We need do discuss our strategy."

"Can I join you?"-Asked Saver-"I may help you in your plans".

"Of course, Saver"

He prayed that he and Gilgamesh will not start fighting.

The War changed greatly with this new Servant.

Minato's Profile:

True Name: Minato Arisato.

Class: Saver.

Parameters (His own, not his Personas):

Strength: A (Can carry Mjölnir without any troubles).

Endurance: EX (Withstood attacks that could wipe all life on Earth without a trouble).

Agility: B+ (Can avoid very fast attacks, like lightning and fast energy blades).

Mana: EX (Have knowledge and Magic Circuits of many Heroes and Gods. Now have infinity amount of prana.)

Luck: A (Usually very lucky. But in important moments luck can betray him.)

N. Phantasm: EX (Just look at them!)

Class Skills:

Charisma: EX

At this point persons Charisma is absolute. Battles can be won by few words. Giving time, it is possible to befriend anyone.

Counter Hero: A+

At Rank A+, it reduces all of the opponent's parameters by three ranks. It's weaker against anti-heroes, reducing their parameters by two ranks.

Personal Skills:

Battle Continuation: EX

Makes it possible to fight as long as Servant have will to fight.

Enlightenment of the Sacred Fig: EX

Renders protection to one who has reached "the Truth of the World" or "the Answer of Humanity" - a Protection Against Purging that marks the Servant as a "Protector of the World." Unconditionally reduces the damage dealt by physical attacks, conceptual attacks, and interdimensional attacks by a value equivalent to the Servant's HP. This skill also shuts out probability of Mental Interference by 100%. Even the seven desires of man may be received with perfect tranquility.

Pioneer of the Stars: EX

This is the unique Skill given to heroes that became turning points in the human history. All difficult voyages and challenges which are considered "impossible" turn into "events that can be realized".

Persona: EX

This is unique Skill given to heroes that are capable to summon different beings from the Sea of Souls. At EX rank it is possible to summon as many personas as you can, as long as you have enough prana. It is also possible to fuse with Persona. Then servant can use all its abilities, but lose access to his own. It is possible to fuse Persona with Nihil weapon and create perfect copy of any Noble Phantasms. (But, amount of time that fusion require {10-20 seconds} prevent shouting Nihil weapons like certain archers). Later fused Persona can be resummond.

Noble Phantasms:

Defender of World:With My Hands I Will Protect The Ephemeral and Flickering World. : EX (Anti-Self).

Saver's absolute defense. Crystallization of his protection of all life in existence from merciless Avatar of Death. It give him absolute protection from any attack lower than Anti-World. When active it is consume huge amount of prana, but for Saver it isn't a problem. Usually Saver don't use it, believing it to be giant cheat. This Phantasm can be given to somebody in the form of indestructible blue orb, but if orb is lost Saver can't regain this Phantasm again.

Armageddon: End of All. EX( Anti-World).

Saver's strongest attack. Spell, powerful enough to become Noble Phantasm. By receiving permission from Law and Chaos to begin End of the World, Saver unleash abyss of pure energy that deal conceptual and physical damage. It is impossible to survive this attack if enemy don't have high Divinity, Luck, or protection of some Divine Being. The wider area of attack the less prana it is consume.

Universe of Possibilities: Miracles of Universe. ? (Unlimited\Outside of classification). (Unlimited\Outside of classification).

Savers true Noble Phantasm. Comparing it to any other Noble Phantasm, True Magic, And even power of Gods And Ultimate One is the same as comparing stick and Nuclear Bomb. With this Phantasm Saver can easily change any aspect of reality. Gravity, laws of physics, and any concept "in word" can be changed without any problem. Laws of multiverse (even directly rewriting or destroying Root) can be achieved with proper amount of energy. Only to basic concepts (Beginning and Ending of all sings) will require Saver's life (Heroic Spirit's not the real one).Usually Saver don't use it, believing it to be giant cheat.

Now this is it. My first ever FanFic. Please, read, correct and review.

P.S Please don't write review like "Minato is too OP". I now that he is very strong. I MADE him this strong. Like all Nasuverse characters that don't have physical weakness, have psychological. I already hinted what it is.

P.P.S English isn't my native language, so forgive me for bad grammar. Please!