Prolog part 1:

Begining

I am the Bone of my Sword,

Steel is my Body and Fire is my Blood,

I create over a thousand Blades,

Unaware to Death, nor know to Life,

May withstood Pain to create many Weapons,

Then those hands will never hold anything,

So I pray, Unlimited Blade Works.

How much time have pass when I become a servant of Alaya? The hero who was betrayed by those who swore to protect. Alone on the hill of swords with his ideals. Like a fool, I made pact with Will of Humanity to become Counter Guardian. Warrior who protect humankind from destruction. It was illusion. I only kill everyone when Counter Forces failed. My despair grew with countless slauther in the name of protecting humanity. I threw my borrowed ideals of my adopted father Emiya Kiritsugi. I wanted to get rid of this cursed existence in all cost. Then glimmer of hope have appear front my eyes. Fifth Holy Grail War. When I was summoned as servant by Rin. I have one goal: kill my younger self and create a paradox who erase me from Akashic Records. In first time did not work as I wanted. I died in Eizberm mansion to buy some time for my younger self, Saber and Rin. I fought with Heracles and slay six from his nine remaining lives. In another I was witness Ilya death from hands King of Heroes, Gilgamesh. Words of my younger version when we fought with each other. Those words have stuck me deeply and my words to Rin to keep eyes on my younger self. In the third time I was summon as Servant in Fifth Grail War and see as my younger self reject our ideals. With this I fully embraced my role of Counter Guardian and I fight with First Evil, Angrya Manryu. After that I find peace.

Now I waiting for the next task from Alaya, or call of the next fool.

I'm Counter Guardian Archer, Emiya Shiro.

Prolog part 2:

End of service

I waiting in silence on the Throne of Heroes for next task from Alaya, Will of Humanity.

-Counter Guardian. –said Alaya. –I release you from my service.

I count believe what I heard. That cannot be true.

-Oh it is. Your actions in Fifth Holy Grail War was one of my reasons. Second reasons. You has a very powerful artifact from another reality.

What kind artifact. I have only one, but… wait a minute it was him! Ever now I pay from your stupid pranks. This bloody vampire once again got me into another fucking situation. That his style. Zelrecht when I got you in my hands. I will impale your sorry ass stretch to heart on Gae Bolg.

-This not him.

What? Not him then who?

-This artifact is called Sacred Gear.

Sacred Gear?

-Sacred Gear was create by Being who limited my and Gaia laws in that reality.

A world where Laws of Gaia is limited. Most wet dream of every Magus.

-There I send you.

Great place on retired.

-Stop with this jokes, boy. I sending you there, but with limited power.

Limited power? That's like another mission. Sure Root is now laughing at me. Zelrecht I blame you for everything in my life.

-This is not mission. You are released from my service, but you have title of Counter Guardian. With powers associated to this title.

Wow, just wow.

-You regain your full powers when certain conditions are met.

What condition?

-You been reborn. When you have 6-7 years your original abilities will slowly return. When you awake Sacred Gear you will have back your memories.

Not bad.

-In that world your Reality Marble be little different.

Different?

-Your Reality Marble be more powerful. Reshape reality itself.

….

-With this you can reconstruct fully Excalibur, Ea, or other Divine weapons.

Please stop joking because this is not funny.

-This is not joke dear boy. This world have little influence of Gaia so your thaumaturgy be on par of miracles, or like magus says, True Magic.

If Rin ever master Kaleidoscope and find a way to that world with me. She Gandr my sorry ass to Age of Gods or ever further. Root, please have mercy.

-Stop! You are Counter Guardian not some weeping dog!

Even status of Counter Guardian never save me from Tsundere Primal Fury.

-…..

…...

- You have right. Pray then she never find that world and you.

Even Alya fearing Tsundere in furry. Root, please have mercy. Then what now?

-Anything else?

What are Sacred Gears?

-Sacred Gears, are artifacts created and given to humans by being know in your world as a God.

God?! God from bible?!

-Yes, him. Each of Sacred Gears have different power, but your is very special. He is one of 13 most powerful. Weapons who can kill even a gods. Those weapons are know as Longinus. Your Sacred Gear are know as Boosted Gear, in him are sealed one of Two Heavenly Dragons. Red Welch Dragon, Ddraige.

This beating all things that I so far encountered. Saved from flame in Fuyuki City, which originate by Kiritsugi when he ordered Saber to destroy tainted Grail, become a magus and particle ten years later in Fifth War. Winning and my dream to become "Ally of Justice". I walk upon a path of Shura. Slay goddam army of Dead Apostles, fighting in many wars, betrayed by those who I swore to protect and become Beast of Alaya, Counter Guardian.

Tabula Rasa, new start.

-Are you ready, boy? –Alaya asked.

-Yes, I am. –that was my answer and then it was only light.