Prologue

'The raindrops pour heavily. The floor feels cold and wet. The sirens of the ambulance cannot seem to hear. So much blood has been lost in my body. My vision seems blurry. Oh no, I'm losing consciousness.'

"You're going to be okay, kid! Just stay with us!"

That is the last thing I heard. I closed my eyes and died.

'How did I end up like this?'

- ONE HOUR AGO -

"Be that word our sign of parting, bird or fiend!" I shrieked, upstarting-

"Get thee back into the tempest and the Night's Plutonian shore!

Leave no black plume as a to-"

*Ding-dong*

"Everyone, I want you to write an essay about Edgar Allan Poe's poem The Raven. Pass it on Wednesday."

"Hai! "

We packed our stuff and went home.

While walking, I played the song "oath sign" by LiSA from my favorite Anime Series.

'I knew it LiSA's voice is the best.'

It started raining as I pulled out my umbrella and opened it.

"When I get home, I will start to ascend Saber Arturia; I can't wait!"

I said that with excitement as I arrived at the stoplight. I waited to light green.

"Kurikaesu sekai Nando te wo nobashitara
Hakanai namida wa kuroi kokoro tokasu no?

Mebae dashita omoi ga mune ni hibiita nara
Kimi no tonari de zutto kawarazu mamoru darou

Ochita kibou wo hirotte Asu ni tsunaide yukeba
Karamatta ibitsuna negai datte hodokeru

Hikari wo kazashite tamerai wo keshita
Agetakatta no wa mirai de
Naiteru yoru daita mama nageki wo sakende

Fumiireta ashi wo tooku no risou ga
Sotto iyashite yuku
Tashikana kizuna wo tsuyoku nigiri susumou dokomademo
Kegare kitta kiseki wo se ni

Tsukurareta omoi furereba nani yori mo
Atatakakute genjitsu ga kasumi hajimeru

Kurui dashita sekai ni toikake tsuzuketemo
Kotae nante denai tte Mou kimi wa shitteita no?

Naite nijinda negai wa Kesshite yurugi wa shinakute
Tada sotto itami wo owarinaku ataeru

Kanashimi wo shitte Yorokobi mo shitta
Yowasa wa kimi wo kaete
Tachidomatta toki Hagare subete wo kowashita

Todoku hazu no nai kotoba wo takushite
Mieta hitomi wa
Nani wo kanjite toozakeru no?
Kokoro kakusu youni

Ima koko ni iru imi
Oshiete kureta nara
Tsuyoku irareru Kawarazu itsumo

Hikari wo kazashite tamerai wo keshita
Agetakatta no wa mirai de
Naiteru yoru daita mama nageki wo sakende

Fumiireta ashi wo tooku no risou ga
Sotto iyashite yuku
Tashikana kizuna wo tsuyoku nigiri susumou dokomademo

Mayoi nante me wo hiraite
Furi haratte te wo nobasou
Kegare kitta kiseki wo se ni"

I was singing the song while waiting. Then the light turned green, and I started to cross. While walking, a truck is heading in my direction. The driver kept pressing the horn, but I didn't hear it because of my headphones.

*HONK! HONK!*

I finally notice it, but it's too late.

*CRASH!*

And that's how I died.

'Damn it, if I may, I want to be reborn again. That is if it will come true.'

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"Hey, wake up..."

I heard a voice. Maybe I imagine it.

"Hey, wake up already."

'Huh? There it is again. I'm not dead?!... No, I'm pretty sure I died.'

"Mmm..."

I started waking up. As I open my eyes, I look around. I see hospital beds and injured children.

'Somehow, this scene looks so familiar.'

"Are you feeling okay?"

'Huh?'

I turned to my side. I see a boy at the age of 6-7 years old. He had red-shaded hair and golden eyes. This boy, somehow, looks familiar to me.

"Are you okay? You look like you've seen a ghost."

"I-I'm fine."

*Gasp*

I covered my mouth.

'Huh?! My voice, why is my voice so different?!'

I looked to my right at the window to look in my reflection. What I saw was so unexpected.

'EHHHHHHHHH?!'

I put both my hands on my cheeks while being surprised.

'How did this happen?! I looked five years old, and my hair was red-orange and golden eyes just like the boy beside me. Don't tell me...'

*Sting*

My head started to hurt.

'These memories are... from the Fuyuki Fire.'

"Are you sure you're all right? Is your head hurt?"

The red-headed boy spoke to me again with a worried face. I look back at him and smile.

"I'm fine."

"That's a relief. I was worried about you, Ritsuka. As your big brother, I have to look after you."

"?"

I paused for a moment.

"What did you say?"

I asked him.

"I said, "As your big brother, I have to look after you."..."

"O_O"

"WHAAAAAAAAAAT?!"

"Hey, Ritsuka! What's wrong?!"

-ONE HOUR LATER-

I was able to calm down.

'I have come to a realization. I have been reincarnated in the "Fate/ stay night" series, with the appearance of "Ritsuka (Gudako) Fujimaru" from the game named "Fate Grand Order," but in a child form. And the last thing is that I became "Shirou Emiya's Little Sister." How did this happen?! First, How exactly did I become Shirou's sister? There is no character in the Anime?! And why do I look like Gudako?! Okay, calm down. Or maybe this is my chance to change to flow of the story.'

'Okay, I decided to change the cores of the story. First, I have to check my magic circuits, train my body, learn magecraft, and lastly make a plan for the Fifth Holy Grail War.'

"What are you thinking about?"

"Nothing."

Suddenly a voice was heard at the door.

"Ah, I see."

I look who it was. It was a man who was talking to a nurse.

'Is that who I think it is?'

"Thank you."

He thanked the nurse and turned back. He saw us and walked forward.

"Hello to the two of you. You must be Shirou-kun and Ritsuka-kun."

'I was right. It's Kiritsugu.'

We siblings remain silent. He continues.

"I'll come right out and ask you which you would prefer being sent off to an orphanage or being taken in by a man you just met?"

Shirou and I looked at each other to think about it and pointed at him.

He smiled.

"I'm glad. Then let's get you dressed right away. You need to get acclimated to your new home as soon as possible. Oh, I forgot to mention something important. There is something extremely important that I have to tell you. Ready?"

"Yeah. I should get this out of the way. I'm a mage."

And so Kiritsugu Emiya adopted us and lived in the Emiya Estate. We met the Landlord's daughter "Taiga Fujimura," our future guardian. Now and then, Kiritsugu always leaves home, he didn't say where he was going, but I already knew where. Every day I train my body, and somehow I can activate my magic circuits properly, and my magical energy is limitless. It was surprising that I have that kind of power. Oh, I was in a Taekwondo club in my previous life, so I know how to fight.

Currently, I was training my body in the Kendo shed. With a dummy as an opponent, I kept punching and kicking it.

'I have to learn magecraft soon before the Holy Grail War starts to protect Shirou.'

"HAH!"

I gave it one last kick, and it stumbles. I went to grab my towel.

*Huff-huff*

*Clap-clap*

"Wow, that was amazing." Shirou appeared at the entrance and applauded me.

"Oh, hey there, Onii-chan. Why are you doing here?" I said while wiping my face.

"I came here to get you because it's dinner time."

"Oh, it's time already. Okay, I'll take a shower first. I'll come later."

"Okay."

I took a shower and changed my clothes, and went straight to the living room. As I opened the door, Kiritsugu was there, just got back from Germany.

"Oh, Father, you're here. Welcome back."

"Hi Ritsuka, come in and sit down."

I came over to sit beside Kiritsugu. "Wow, that looks good. As expected to Onii-chan." I looked at the food and gave Shirou a thumbs up.

"It's nothing much at all."

We heard a bang at the door.

"I am back!" It was just Fuji-nee.

"Hi, Fuji-nee."

"Hi, Ritsuka-chan. Your so cute~." She said while squeezing my cheeks.

"That hurts Fuji-nee."

"Fuji-nee, you should stop barging in like that."

"I'll do whatever I want."

Shirou sighed.

"Fuji-nee, let go, please."

"Oh, sorry, Ritsuka-chan."

"Come on, let's eat."

We all sat around the table and put our hands together.

""""Itadakimasu!""""

We all started eating. Fuji-nee keeps rambling about how delicious the food that Shirou makes is. Shirou eats while ignoring her, while Kiritsugu eats his food quietly.

"Father, I want to talk to you about something. Is it okay?"

"Sure, after we finish eating, okay?"

I nodded to his answer and continued to eat.

We continued eating our dinner. After eating, I helped Shirou wash the dishes, Fuji-nee went home, and Kiritsugu went straight to his room. After we passed the plates, Shirou went straight to bed while I went to Kiritsugu's room. But on my way, I saw Kiritsugu was sitting on the floor while looking at the moon.

He looks in my direction. "Oh, Ritsuka, come sit beside me."

I nodded to him and sat beside him.

"So, what do you want to talk about?"

"I...I want to become a mage and learn magecraft."

"What made you think that?"

"Because I want to protect and save my family from danger."

"But becoming a mage means having a difficult path."

"I know that, but I still want to take the risk and save her."

"Her?"

"I was talking about your daughter. Her name is Illya, right?"

Even though he looked lifeless, he looked surprised. "How did you?"

"I already knew why you always went out of the country, and I also saw you crying every night."

"..."

"I want to save her as well. I know it's risky, but she deserves to be with her father. So please teach me."

I bowed to him, begging.

"Lift your head." I did what he said and looked at him.

"All right, I will teach you, but I will assign a better teacher for you."

"You mean it."

He nods.

"I promise I will save Illya and bring her home."

"Then I am grateful for that."

After I made that promise, Kiritsugu hired a teacher to teach me magecraft. It took me one and a half years to learn it. I learned how to use Projection Magecraft like Shirou, but mine was different because mine was close to the original, unlike copy. I can also manipulate magic circuits if I want to.

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And so the day has come where I can summon My Servant.

I went to the shed wherein Irisviel drew the magic circle years ago. I put away the boxes and swept the floor.

After I was done, I activated my magic circuits, materializing the catalysts. I was able to create it ideally.

"Success!" I shouted happily and laid the catalyst in the magic circle.

I held out my left hand with the command spells and began my chant.

The circle began to shine with each verse, and a gust of wind began to blow from it as the lights started to shine.

Let silver and steel be the essence.

Let stone and the archduke of contracts be the foundation.

Let red be the color I pay tribute to.

Let rise a wall against the wind that shall fall.

Let the four cardinal gates close.

Let the three-forked road from the crown reaching unto the Kingdom rotate."

"Let it be filled. Again. Again. Again. Again.

Let it be filled fivefold for every turn, simply breaking asunder with every filling.

My dreams form the body

Your Spirit shall show me the path as I walk it by my own power And so I hereby swear,

That I shall be all the good in the world

That I shall defeat all the evil in the world.

You seven souls who reside at the fate I wish to reach

Come forth from the binding circle

Oh Keeper of the Balance!

I shouted as the light exploded.

The light vanishes and reveals a man in black and violet armor. He had a vast Shield and sword strapping in his waist. He had silver hair and golden eyes. I have already seen this man so many times in the anime that anyone can recognize him.

The Servant I summoned looked at me and immediately bowed and lowered his head.

"Servant Shielder, my True Name is Galahad of the Revelations, one of the Knights of the Round Table. " He looked at my face.

"I ask of you, are you, My Master?"