Chapter 1: Heed the Call

Rin walked into her Mage chamber after a long day "2 am, the time when my mana is at its peak strength. Time to summon Saber." she said.

Rin didn't know why but she felt words flow into her mind that weren't what she was taught. She couldn't help but say the words that flowed into her mind like a river.

"Mercury the body, Gemstone the blood, fill fill fill fill fill, repeat 5 times, I call to the Legends of the grail, to bring forth a servant of change, let my Will be Thy Wings, and My ambition, thy weapons, if you Heed the call, then come forth, and let our pact be forged, come forth, and break the chains of fate, I call upon you"

"Come forth... Breaker of the holy scales!"

She paused. The circle glowing purple as she finished the incantation

The summoning Circle then suddenly glowed a bright red and Black feathers rose from it as; a seemingly 18 year old appeared from the circle. "In Response to the summons I have come." the Raven Haired teen in a red coat declared.

"Now tell me," His eyes open to show dark red eyes that pierce into the soul. "Are you My Master?"

Rin stared at this servant and scanned him to see his stats, as she thought 'I didn't think a heroic spirit could be so young' After taking a glance she looked to the servant in front of her and spoke. "Yes. I am your master, tell me what is your class and name." She could tell she didn't summon Saber as evidenced by the lack of armor or sword.

The Teenager looked at Rin again after looking at his surroundings "I'm in the Assassin class, and probably the best one your ever going to see stat wise, My name is Grim Rykatsuchi, in my past life I was known by two stories that you would ever hear of now, The Raven Ravager, and The Red Reaper'."

Rin has heard both of those stories when she was a kid. The Legends of a man with razor sharp wings, his Legend is a kids Fairy Tale for parents to scare kids so they don't stay out too late Rin then spoke to him "I thought Heroic spirits didn't come Fairy Tales" To which the assassin replied;

"A lot of Fairy tales come from true stories, even mythology. I killed anything from monsters to Magus, and even a few corrupt officials, which is why I am a heroic spirit". Rin again spoke "This… But, why are your stats so high?" she asked as she scanned the assassin once again to see if it was a fluke.

Servant: Grim (The Raven Ravager) Rykatsuchi

Strength: C+

Endurance: A

Agility: S+

Mana: B -

Luck: A

Stealth: SS

Riding/Mounts: B

"My Stats are high because of a few reasons, 1; Is because The grail is compensating for me because I can't use my Full power outside my Noble phantasm all the time like the rest can. I can sometimes but it takes a lot of mana.

2; Is because I died young, and 3; I had to be strong and skilled to use my weapons, any other questions, My master." The assassin asked Rin. "No, that will be all Assassin, however we do need to inform the church of your summoning" She said. "I never liked churches, I was never religious enough to believe in god, even as a heroic spirit I don't believe in him." Grim said, expressing disdain for church.

"While I understand the sentiment Assassin, we have to inform the church, because the sooner we do it, the faster we get the war done with." Assassin nodded at those words. "Alright… do we have to go there?" he asked. Rin then said "No I can just call and inform them.

"Please do that" Assassin said as he scoured the house, and eventually hit the kitchen when he heard her talking to Kirei Kotomine, which he could easily hear. "The assassin class? I must say that's surprising" he said. "Yes, it's a pleasant surprise though," she replied. Grim couldn't help but smile when he heard her say that, 'Sorry Archer, this means you were summoned by Caster, but the question is, Is it the same Archer.'

After Grim was done familiarizing himself with the mansion, he looked to Rin. "Master, if its alright with you I will be exploring the city tomorrow while you are at school." "Just don't gather too much attention, we don't need too many masters seeing you yet. Stay close if I need you." Rin responded, "Roger that, Master" Assassin then dissipated into thin air, his coat-tail being the last to decay.

The next morning

Rin was walking to the school with her hidden servant standing by and they were talking through their mental connection. "I must admit master, technology is very advanced now, The last time I was summoned the best there was; was a rare telephone or "landline" as you call it."

"That's actually very interesting Assassin. When was the last time you were summoned if you mind me asking?" Rin asked her servant. Assassin replied, "Of course I don't mind, Master. Actually I was Summoned by a greedy man named 'Charles J. Guiteau' who wanted his Debt repaid from a man named 'James A. Garfield'.

James was at that point the 20th President of the United States of America. I had my orders, so I carried them out, however I left evidence it was my master because James wasn't a corrupt man, just one who didn't pay a debt. I was summoned on June 31st, 1881, And executed the primary shot July 2nd of the same year. I stayed 79 days as to make sure the kill was confirmed then went back to the grail to wait to be summoned again."

(A/N: for a small bit of information, this is based of the real Assassination of the 20th president that happened in america in 1881, with slight tweaks for the sake of the story, however this is a real historical fact minus all the servant stuff.)

"Interesting History you have there assassin" Rin Commented. "Yes well, that tends to happen when you are a heroic spirit of death and of my class. Maybe you would like to hear how I assassinated King James II for ordering the Execution of Captain Kidd?" Assassin asked

"While Not Today, I feel that would be an interesting Story Assassin." Rin then walked into her school for another boring day filled with Loser Shinji, Overachiever Emiya, and Her long lost (and can't tell her) sister Sakura.

*time skip; Night,: location: school*

"Rin, He's here" Assassin said through the mental link.

"I know, wait for him to show himself first" Rin responded. The unknown servant came out of the shadows. "You know, I don't like when you sense me before I even show myself." The man wearing a blue outfit with a red spear walked out from his mana shroud. "It's easy to do, especially when you have a servant who is superior in his stealth stat." Rin said confidently as she scanned the man up and down, since she wasn't his master she couldn't see his class or stats but the spear means Rider or Lancer, and since there was no mount in sight it was safe to believe Lancer was the proper designation.

"Ah, that must mean your spirit is either an Assassin class, or your servant spent a lot of time sneaking around in the past" a glint of metal in the tree-line was the only sign of an attack before the lancer barely dodged a metal feather that would have hit his Achilles tendon that would've caused a fatal situation, before jumping back to evade 3 more feathers aimed at his chest. "I will say master… He's a slippery one" the servant in his tailcoat of red fading to black with white on the upper half trims walked from the shadows "Yes Assassin, I see that very well" Rin said with almost sarcastic confidence not worrying about her servant and his ability to take down the lancer in front of him.

"Well master, look on the bright side, we know for sure what class he is. No animals came to save him. Meaning, Definitely a lancer class." Assassin then pulled out 2 feathers in both hands and held them in between his fingers in a fighting stance. "I am of the Assassin class, and for obvious reasons I will not reveal my name to you, however, I hereby challenge you to a duel of strength in the form of trial through combat" He gave Rin a wink when he saw her astonished expression.

The lancer got into position "I am of the Lancer class, as you have not revealed a name I shall not give my own. I accept your proposition of a trial by combat to prove thy strength." "Master, This man is a Lancer and a Knight, pay attention to his fighting style, any information that comes may be valuable, being a lancer and a Knight already shortens the amount of people he is in the roster of Lancers.'' that's when Rin realizes what the challenge was meant for, it was to throw lancer off the smell of who he was, while simultaneously, figuring out the Lancer's Identity, truly a genius move.

While fighting, Lancer suddenly stopped because he heard a sound. He turned to see a student running away. Rin was about to run after them when Assassin stopped her. "Mast… Rin wait a moment, I predicted this would happen, in fact the plan hinged on it, we'll follow in exactly 2 minutes, that's when the boy will be caught, after that 2 minutes we're going to go to the second floor student council room." Rin did listen and wait. Then they went inside.

*inside the building*

"Of all people, of course it had to be you" Rin said. Assassin waited at the window, looking outside at the perfect Crescent moon already knowing what's going to happen next. When she finished what she was doing, she left her pendant there, as it was empty, and she had other ones luckily that wasn't the one her father gave her as they got there fast enough to use a different one. Then they left the building in search of the lancer (Assassin does know what's going to happen, he's trying not to change time too much so he stays in control of the situations, however just by being here, he's changing a few things, at that point he'll deviate from what he knows)

(A/N: I'm not going to do Shiro's perspective at all in this story unless its important, its not that his side isn't important, but this and my other stories are focused on my OC's so if my OC is with shiro, then he'll be there, but we'll be seeing a lot of Rin due to her being his master, that is all, anyway, thats Chapter 1, hope you liked it.)