Trial by Blades : Chapter 1

Zelretch looked into the boy's past, selecting the boy's age that if he were to start teaching him, the boy would learn his own would also test the boy of his expectations, if his hypothesis was right the boy could learn even his own branch of magic, the access to parallel worlds.

Shirou Emiya, the boy who died and also have been rebirthed at the end of the Fourth Holy Grail War, the event he didn't know about that caused the Fuyuki Fire where Emiya Kiritsugu saved him, the boy didn't remember his past before the fire, but at least in the end Kiritsugu adopted the boy as his own and lived together, for three years they lived peacefully but one night Shirou found out that his foster father was a magus, because of this he insistered that his father teach him about magic.

"Remember Shirou once you take this path you can't stop and I'll also warn you that if you were to become a magus various dangers will also come with being one."Kiritsugu said worrily as he was warning his adopted son about the consequences of being a magus.

With sparkling eyes, unfazed the boy said,"I'm ready jii-san I'll remember to keep it a secret beetween us and never tell anyone about it."

"And?"Kiritsugu said expecting the boy to say more.

"And that I promise to not let this affect my grades at school."Said the boy looking a little disappointed.

"Okay shall we start now Shirou-san?"

"Hai, hai let's start now."The smile now back on the boy's face.

The night continued, they started by Kiritsugu analyzing shirou's elemental affinity and origin, He learned that his affinity is that of sword and his origin is also of one, He was shocked, not only by the fact that his elemental affinity is not one of the four base elements but an irregular one and also how the fact that the boy's origin is also the same as his element.

Curious at his father's silence shirou asked,"Kiritsugu, what's wrong ?"

"Nothing much but I learned that you are very special, Shirou you are an Incarnation, One who has his origin and elemental affinity being the same, this is very rare even among noble magi but what should I expect from my son right ?"Kiritsugu laughed trying to sound like he's lying. As being an incarnation is not only rare as what he said like saying it's only a one in a thousand chance the truth is that the chance is one in a million, He's afraid of the dangers his son might face in the future as being an incarnation can make you a target for sealing designation and being experimented on, being even more afraid that he will not be there for him when he face those trials.

The curse that Angra Mainyu placed on him on the end of the fourth grail war that won't even make him last 2 years facing this fact, he might as well prepare him as much as he can even with his body suffering from the curse .

Shirou's training was harsh not because of the fact the because he has a rare case of being an incarnation but because of Kiritsugu not knowing what to do with him, the boy has completely no talent in magecraft at least Kiritsugu settled that the only abilities that the boy can do are only on 3 branches of magecraft, reinforcement, projection, and structural grasping that even he thinks are worthless for a Magus who is also an incarnation. To this He only taught what he can to the boy as even his magic circuits were also destroyed by Angra Mainyu's curse

Two years passed, a night on the veranda at the Emiya household, talked father and son

"It's been two years already huh, Shirou"

"Yeah it really passed quickly but with you teaching me magic it was at least fun"

"Hey Shirou do you mind listening to me for a second?"Kiritsugu asked the boy with a serious tone.

"Sure but what's with the scary tone ?"Asked the curious boy at his father.

"Well it's nothing major, but Shirou what do you think of a world where no one suffers?"

"What ?Isn't that obvious ?" Shirou asked, confused.

"Wouldn't that kind of world be perfect right ? It was once my dream, a dream of becoming a hero of justice."

"If it was your dream why didn't you fulfill it then ?"

"Shirou I.."

"Don't worry jii-san I know, you're too old to be one aren't you ? That's why I decided, I decided that I'll inherit it, dad's dream don't worry, I'll be the Hero of Justice in your place."

Kiritsugu could only smile in silence at satisfaction, His son, promising to inherit the dream he once had, He could now rest, assured and with trust he knew his choice was not wrong, that to inherit his dream into his one and only son .

That night was remembered as Kiritsugu's final moment his will passed on, The man died with satisfaction, a smile on his face even in death.

Emiya Kiritsugu's corpse was buried in Ryuudou Temple. The only people at his funeral were Shirou, Taiga who is Shirou's self proclaimed sister, and Taiga's family and reletives.

From the boundary beetween universes, The Wizard Marshall smiled,"I guess it's time."

A/N: So this is the first chapter, I got the feeling that it was supposed to be the prologue though fuck me lmao. Anyways give a feedback about the chapter, I'd greatly appreciate it thank you.

P.S.: I am currently working on chapter 3 already expect it to be in this week. Once again thank you.

I don't own the fate franchise all dem rights go to Type-moon.