The Legend Return
Kotomine Church, Fuyuki City
As he waits the time to come, Kirei Kotomine once again look at the Command Seals at his hand. He must admit that the fact that he was chosen as one of the Master of the Fourth Holy Grail War kinda surprised him. While he knew about the magecraft, magus, and other things along that line, he never had any connection with them. He then also found out that his father, Risei Kotomine, will be the supervisor of the war, just like in the previous one.
In order to prepare for the war, Kirei learned about magecraft from Tokiomi Tohsaka, who is an old friend of Risei along with the former's father. After receiving an adequate training, Risei and Tokiomi told Kirei the plan that they had made.
Kirei will summon an Assassin-class Servant who is the Hundred-Faced Hassan and Tokiomi will summon an Archer-class Servant who is Gilgamesh. They will sacrificed one of the Hassan and make other Masters think that Assassin is dead. Kirei will then take sanctuary at the church while the remaining Hassans gather information that can be used to defeat other Servants.
At the paper, Kirei knows that the plan is close to perfect and can guarantee easy win. From his experience as an executor however, he knows things can go south and become bad really fast. He can only pray to God that it won't happen and if it does, it won't be too bad.
Anyway, there's perhaps a good thing that can happen by participating in the Holy Grail War. No, it's not the wish-granting device that bears the name of the Cup of Christ. It's something else, or rather someone.
Kiritsugu Emiya.
Kirei once read files about the Masters that will participate in the Holy Grail War. For him, none of them took much of interest. He simply read it so that he has a better chance in case he must fight one of them.
That was until he read the file about Kiritsugu.
When he read about it, Kirei found out that both Kiritsugu and him have one similarity; both of them don't have any goal in life. Everything they did were not to attain one, but to find a goal.
When Kirei found out that Kiritsugu retired from his life as mercenary or freelancer magus, he deduced that it was because Kiritsugu finally found his goal and thus stop looking. Kirei believed that if he talk to the Magus Killer, the result of the conversation can help him in finding the true meaning of his live.
"Kirei, are you ready?"
Kirei turns his head to see that Risei is approaching him. He turns his body to fully faced his father.
"Anytime, father."
"Good. Let us start the summoning ritual then."
Underground
Inside the room, Kirei stood in front of a summoning circle. The time has come; he's going to summon Assassin and helps Tokiomi in winning the Fourth Holy Grail War.
There's just one problem however; the Holy Grail has been corrupted since the Third Holy Grail War thanks for the Einzbern summoning Angra Mainyu. Due to the corruption, there's a certain thing that has been twisted.
Usually, there are two way to summon a Servant. The first is by using the Master's personality and history. The Grail will then choose the Servant that is the most compatible with the Master. Due to this though, there's a chance of summoning a weal Servant. The second is by using a catalyst which belongs to a Servant when he or she still alive. The problem with using this way is that there's a chance for the Master and Servant aren't a match for each other and can lead to both of them loosing the war.
The way that Kirei used is the second one. This is because he used a catalyst, which is the word "Assassin". That word always refers to someone who killed another person for political reason or payment, which in turn refers to the Hassassin.
That's not what got twisted.
It's the fact that all Servants that had been summoned were heroes from at the least several centuries ago.
With the twist, the Grail doesn't choose one of the Hassan as the Assassin of the Fourth Holy Grail War. It instead choose another heroes to bear the title.
Calling this person a hero however, is quite far fetched.
Another fact is that this person is actually two different people. They just shared the same title during their lives and as such, share each other legends.
The Grail choose one of them. Due to sharing their legend though, there's only little different.
This person is the youngest of all heroic spirits. He's only a year old at the most.
His fame and legend however are not to be underestimated. While normal people might not know much about him, one type of people know, respect, and fear him.
Soldier.
He's the person who's responsible for the spread of Private Forces around the globe. He's also the pioneer of the concept of private military company, soldiers without nation.
He has fought quite a number of supernatural creatures. Some of them were the ghost of the member of an elite team and man who was on fire and driven by nothing but pure hatred.
He's so powerful that everyone believe the only way to have that kind of man is by cloning him.
He's the person who created a nation for soldiers, where they won't be used as tools by country, organization, or government.
He's the Greatest Soldier of the 20th Century and the Man Who Sold the World.
He's also a cardboard box lover, believes in Santa Claus, and quite a foodie.
Kirei keeps his emotionless face as the smoke from the summoning circle starts to disappear. When all of it finally did, his mind is racing. That's because the man in front of him is definitely not of Middle Eastern descent or dressed in an ancient robes.
The Servant in front of him is a Caucasian male at his late 40's to early 50's. He has a brown hair and full beard at his face which is covered in scars along with blue eye. His other eyes is covered by blindfold that looks like the one usually worn by pirates of the old age. He's wearing a modern combat uniform with urban camouflage. What stand the most are a "horn" at his forehead and his red left arm. The arm seems to be robotic from Kirei's point of view.
Kirei diverts his attention to the man's appearance to the weapons that he carried. His right hand is holding a pistol with extended magazine and suppressor. At his hip is an assault rifle while at his back is a sniper rifle; both of them also have a suppressor attached on their muzzles. At his belt are several types of grenades. There are also some pouches that Kirei believed where the man keeps his ammo.
This man is definitely not Hassan-i-Sabbah.
Before anyone can say anything, the man holsters his gun before giving a salute. He then asks a question with firm and military-like tone.
"Servant Assassin answered to the call of duty. I demand that if you're my Master, identify yourself!"
"Y-Yes, I am your Master." Replied Kirei with a little bit of surprise as he shows his Command Seals.
"Then the contract is complete."
Both Kirei and Assassin look at each other for few moments before Kirei asks something important.
"W-Who are you?" Asked Kirei.
"I am Big Boss."
And the prologue is complete.
As you can see, Venom Snake a.k.a. Big Boss is summoned as Assassin during the Fourth Holy Grail War. Will the change be good or bad? Can the Servants armed with spear and sword face off against Servant armed with modern weaponry?
If you have question or suggestion, feel free to tell me.
Review please.