[A/N: Ok so for those who have read my other children of the sea story this is the story of Percy becoming Shirou and what the story would be like. Now I know that the other story hasn't been worked on in a while but the next chapter of that story is in progress so don't get too mad.
So on with the beginning.]
Fuyuki, Japan. 1993.
Cursed flames licked the ground and all who have the misfortune to be in it's wake as the fire burned the area that was Fuyuki, cursing the very area to the point that no life could thrive there.
Through the fire a young boy walked, he ignored those who cried out for his help, did they want to live or did the want to die, he didn't know, he just kept walking.
The boy had red hair and golden eyes, he wore a small hooded jacket and pajamas, clearly he had been asleep when this hell began.
As the boy walked he eventually began to cough due to the smoke from the fire, and eventually he couldn't see at all, but he had to keep moving, or this hell will never end.
Due to his loss of sight the boy tripped on a small chunk of debris, which must have come from the theater-house when it exploded in a gold flash.
As he fell, his sight cleared, and he saw a large metal pole that was partially melted, right below his falling person.
He tried to use what little strength he had left, in his small body, to turn and avoid the pole but he only succeeded in turning around and ended up getting impaled through the back, and as the life faded from him he saw a large stone falling from the sky and crush his lifeless body.
Realm of the Fates, Outside time and space.
The Fates were spinning the web of Fate for the future of Olympus, for they could see Kronos's rise, just like the other worlds they aid their grandfather, Chaos, in governing.
Suddenly the Fates gasp as one and immediately rushed to a universe they had set aside for the time being, they saw the redhaired boy, Shirou Emiya, a future hero, be impaled and crushed in the Fuyuki fire.
"No, this cannot be how did this happen!!" One of the Fates shouted.
"I do not know sister, but what do we do now, even we cannot bring back the dead." Another Fate muttered.
"Indeed." The third Fate, she was the one who talked the least, agreed.
Suddenly they felt another disturbance in the Fate, from this same universe no less, they peered into the dimensional crystal and saw the future hero of olympus, Percy Jackson, be born ... with a twin sister.
They were confused, none of this was supposed to happen, but it did anyways.
"Sister what is our next act?" the second fate asked the first fate, while the third just stared into the crystal.
"I-I don't know." the first fate admitted.
"Hm!" the third Fate pointed to Percy then to where Shirou had been crushed.
"... that's it, sister you are a genius, as the motals would put it!" the two other Fates shouted as one.
"We will have the girl take Shirou's place-" First fate began
"No..." the third fate denied.
"What?" the second fate asked
"Percy... Shirou..." third fate ... explained, in very few words.
"But Percy is supposed to save Olympus from Kronos!" First fate shouted.
"Save... as ... Shirou..." Third Fate said.
"Yes that does seem like a good idea Sister..." Second fate agreed with her quiet sister.
First sighed and said "Fine we'll have Percy be Shirou, but this means we will have to alter the prophecy..."
"No... Cursed ... Blade... Shirou ... is Sword."
"Ah yes that is true... Shirou is a sword, and has many cursed weapons, so the prophecy should be fine as is." First agreed.
"Now how about we get Chronos, and ... Zelretch, to take Percy to the time he should be in for our plan to work..." First stated and sent a message to Chronos and the Incarnation of their father, Chaos, aka Zelretch.
They then felt Fate be altered and looked to see a four year old Percy jackson appear in the fuyuki fire.
"He needs to be a bit older... same age as Shirou." Second fate messaged Chronos, who used his powers to age Percy's body to six years old.
"Perfect. Now for the rest..." First stated, and with a wave of her hand sent their plan into action.
Fuyuki, Japan. 1993.
Percy appeared in the fire, and by instinct started to walk, and with each step he lost a part of himself, his memories, his emotions... his name.
Now he was blank, there was nothing left of him, but his body, which was a body that kept moving.
Suddenly from the stone where Shirou was crushed, came blood and ashes, the blood surrounded the now no named boy, and fused itself with his DNA, and the ashes swirled around the boy and his looks changed, before he had black hair and green eyes, now he had red hair and golden eyes, just like Shirou.
Soon the boy no longer could walk and fell to the ground.
The boy stared at the moon with lifeless eyes, he reached towards it as the flames began to die down, due to the rain that had begun to fall.
"Finally ... this hell will be over..." the boy thought as he began to close his eyes.
Only for them to open again when he felt someone grab his hand, lightly. The boy looked at the person, it was a man, with messy black hair, and void black eyes. Just by looking at the man he could tell that this was a man that never smiled or cried.
And yet this man was doing both, he was smiling and crying tears of joy, as he began to cry out.
"He's alive... he's alive... I'm saved!"
The man suddenly pulled out something the boy couldn't see, the only thing he knew was the man had placed it on his chest, and the next thing he saw was a bright flash of beautiful gold.
One week later.
The boy woke in a pure white room he sat up and looked around he was surrounded by people, they were covered in bandages to cover up their burns.
There was a man in a white coat checking on one of the patients, said patient then pointed to where the boy sat, the man turned and saw the boy.
The man thanked the patient and walked to the boy.
"Hello... I'm Dr. Takeshi, you've been asleep for a week, are you feeling alright?" Dr. Takeshi asked the boy, who nodded.
"Alright good, now can you tell me you're name?" Dr. Takeshi asked.
The boy thought for a moment, what was his name.
Shirou...
The word seemed to float into his mind.
Shirou? Was that his name, he decided to use that.
"S-Sh-i-i-rou... Shirou." The now named Shirou said, he had no memories, that included on how to speak, but he saw Dr. Takeshi speak so he attempted to do the same.
"Shirou, eh? Well then Shirou, tell me, what do you remember." Takeshi asked, the docter new that the boy had amnesia, due to his medical analysis over the past week.
"F-f-i-re... Fire... N-n-a-a-me... Name." Shirou struggled to say, which the docter noticed.
"He must have forgotten how to speak when he lost his memories, he's probably only able to speak now, by mimicking me, smart kid..." Takeshi thought.
"So you only remember the fire... and your name?" Takeshi asked.
The boy nodded.
"Alright Shirou, some friends of mine are gonna come in and help you relearn how to speak, so be calm ok?" Takeshi told him.
Shirou nodded, and Takeshi stood and went to the phone to call in someone who'll teach him how to talk.
A few days later.
Shirou had gotten the hang of talking rather quickly, and now could speak clearly, without much trouble.
Shirpu was currently sitting on his hospital bed looking out the window, when Takeshi came in.
"Hey Shirou, you've got a visitor..." Takeshi said to the boy, while he passed a glance at the man beside him, Takeshi knew who he was, but he wouldn't say anything about him, because he wasn't the same man as before, he was broken and in need of a purpose, Shirou could just be that purpose.
Takeshi cared for the boy and for the man beside him, he was a family friend, so he wanted to give them both a chance to meet, after all Kiritsugu was the man who save Shirou.
"Here you go, you two can chat for a bit, I'll be out in the hall." Takeshi said.
"Thank you ... Fujimura." Kiritsugu thanked.
"Call me Takeshi. Everybody else does." Takeshi Fujimura said as he walked out the door.
"..right." Kiritsugu muttered before he turned to Shirou who was looking at him.
"Hi... uh... Shirou right?" Kiritsugu asked, which said boy nodded to.
"Right... I suppose I'll just come out and ask you what you would prefer, being shipped out to an orphanage, or being taken in by a man you just met?" Kiritsugu asked.
Shirou looked at him with wide eyes, and tilted his head and began to think, making him act sort of like a curious puppy.
Suddenly Shirou remembered something, the man's smiling face as he cried tears of joy, the man who saved him, was the very man who just asked to adopt him.
When he remembered that he nodded to himself at his choice... and pointed to the man and muttered "You.."
Hearing that the man smiled.
"I'm glad..." the man said, "then let's get you dressed right away, you need to get acclimated to your new home as soon as possible."
The man said that while he reached for a new pair of clothes he had bought for Shirou, if he said yes. When he finished his sentence he paused like he just remembered something.
"Oh... I forgot to mention something you should know..." He began.
"... yeah I should do this now..." The man muttered to himself.
"Shirou... my name is Kiritsugu Emiya... and I am a magus." Kiritsugu said, as he turned to face Shirou with a smile.
[A/N: Alright, so this is the first chapter of what happened to Percy, and how he became Shirou Emiya. Hope you all enjoy.
Also, before I forget to tell you, Shirou aka Percy will have a magic core, due to Percy being a demigod of the big three he would have a lot of magic energy, and the magic core is my way of containing all of it, plus Gilgamesh is a demigod and possessed many Noble Phantasms the amount of prana he would need to open those portals of his, and the amount of prana it would take to activate the NPs, such as Ea, would require a large amount of energy, so a magic core would be a good way to explain where he gets so much power from.
But back to Shirou/Percy, he will have a magic core, but that doesn't mean he will be a overall badass the second he starts to use magic, no he will have his normal abilities, and a few from his demigod parentage, but just water breathing and water and ice manipulation, ice because well ... ice swords... seems what shirou would use that power for (if he had it) right?
Shirou will have two elements and two origins, but one of each will be the same as the other, the first is sword ... obviously... and the second is water. Basically I'm making him a double incarntation of sword and water. But he will only have UBW as his reality marble, no water themed reality marble, that would be too OP, but I will work water into UBW's appearance.
Now I'm sure some people will be wondering "how will his dual status affect UBW?" the answer has already been answered above, for more info... well you'll just have to keep reading to find out more.
Now that me explaining myself is over... Bye.]
Read, Review, and Flamers ... you know the drill.
Later
