Such wholesomeness.. makes me want to write something on these two ([FSN] Illya and [FGO] Emiya Alter). It be cute to see these two siblings interact with each other as she tries her best to heal his broken self.

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Y/n Alt: "So you're betting on this twerp to help out against Kama?"

Y/n: "You don't have the Mystic Code do you?"

Y/n Alt: "I have the power of Gaia and the Black Grail at my side. All we need is for Gilgamesh to access his Mystic Code and we should be fine?! Training him will only hinder us in helping you develop!!"

Y/n: "I'm not planning on following your route. You can't remember everything correctly now can you?"

Y/n Alt: "I may not remember my past that well but even I can tell he's a waste of time!!"

Y/n: "I'll do things my way. You just stay in charge of taking care of Eucliwood"

Y/n Alt: "You are being an idiot Y/n!!"

Y/n: "For correcting your mistake?! If you had the chance to kill her before, why didn't YOU do it?! You lost everyone because you were too selfish in taking her down by yourself that they died because of you!! You never worried about them!!"

Y/n Alt: "I LOVED ALL OF THEM!!!"

He grabs me by the collar and pushes me to a tree.

Y/n Alt: "What do you know about losing everyone?!"

Y/n: "I don't know that feeling"

I shove him away as i fix my shirt.

Y/n: "I'm trying to make sure I don't ever have to experience that feeling. Ever"

I walk back home as the two stand there and look at me.

Gil: "Listen to the kid. You lived your life and what a terrible one you lived. I can see the difference in you two. You lived for the fame and tried to do everything yourself.. he's the opposite"

Y/n Alt: "We are the same"

Gil: "You're wrong mongrel. Sure he will try to cling to fame as well but he's using everything at his disposal to make sure they come back alive. I've seen it since I bonded with him. He'll never make the throne of heroes with a status like ours. The first king and the man who slayed gods"

He looked over to see Ahri give me a big hug.

Gil: "But he will go down as the wisest and most efficient kings of all time. A legend of a king that may not have had many notable feats by himself but of one that lead an army and never lost a battle. That's the difference between the two of you"

Y/n Alt: "That kid.."

Gil: "But I'm merely speaking nonsense"

Y/n Alt: "Can't you see the future with your Clairvoyance?"

Gil: "I can.. his future.. I can't see it. He has unreal potential but what I spoke of is nothing more than his floor. His ceiling *chuckles* I might even go as far as saying it may meet mine given how talented he is. He mastered the weapons of Babylon. I have high hopes for him"

Gilgamesh takes off towards the house before turning back to Y/n once more.

Gil: "You should learn a bit from him.. I pity you for never having anyone there to teach you everything he's learned. I'm sure your future would of been different if you had someone"

Gil walks away with a lingering thought.

Gil: "What happened to the me in your universe?"

Y/n Alt: "Help? I don't need it. I'm going to annihilate Kama with everything I have... Even if I have to force that kid to take my Black Grail"

He leaves towards the back of the house where he looks at the lake.

Y/n Alt: "..."

A notepad interrupts his view and sees who it comes from.

Eu: "Mind if I take a seat?"

Y/n Alt: "Do what you want"

They both sit together and look out as Y/n gets lost in his own thoughts.

Eu: "Are you okay?"

Y/n Alt: "I'm fine. I just think we are wasting time when we should be out there taking on Kama. That idiot is doing nothing-"

Eu: "I trust Y/n"

Y/n Alt: "It won't help?! He should be worried on how he should prepare himself for the battle. Gilgamesh, even though he isn't nearly as powerful as he should be, Me and Y/n should be enough to stand a chance against her"

Eu: "I trust Y/n"

Y/n Alt: ".. Why?.. the only thing that idiot will lead you to is pain"

Eu: "What do you wish to do?"

Y/n Alt: "I... I... I don't know. I just-"

He buries his face onto Eucliwood's chest as he begins to tremble. Eucliwood pats his head as Y/n cries.

Y/n Alt: "I don't want to lose you again"

Eu: "Everything will be okay"

His eyes widen as he looks up at her.

Y/n Alt: "You don't know.. how long I've missed hearing your voice"

He rests his head on her shoulder as Eucliwood embraces him. I simply look from around the corner and head back towards my room as I let Eucliwood take care of my altered self.

Y/n: "No man should ever have to go through what he's been through. I must make sure his reality never happens"

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Dream

I open my eyes and find myself in a burned down city.

Y/n: "What the hell?!"

Children: "Help!!! Somebody?! Help us!!"

Y/n: "I'm coming!!"

I rush over to a burning down restuarant. I kick the door open and walk inside.

Y/n: "Where are you?! Yell for me, I'll save you!!"

I rush through the path as I close in on the children's screams. Once I arrive at the room, I break the door down and carry the two children to safety. I had made it just in time to avoid the collapse of the restaurant.

Y/n: "You two-"

I turn and see something off about this children.

Y/n: "They look.."

Children: "FATHER!!!"

They both jump on me as I look at them in disbelief.

Y/n: "Father?! Who the hell is the mother?"

They both look at me curiously.

Boy: "Mother is mother"

They certainly look like me but-

Girl: "Yes, did you already forget about her you mongrel?!"

Y/n: "They are definitely mine. But how? I never had children"

Y/n: "This is his life.. I'm seeing his life again"

Boy: "Who are you talking about father?"

Y/n: "Nobody, let's get out of here. We have to meet with your mo-"

I suddenly get impaled by multiple spear-like objects as I'm sent towards the wall.

Children: "Father!!"

My children rush to me as they try to remove the needles holding me in place.

Y/n: "Get out of here!! Go find your mother and get her out of this place!!"

A bright light comes down from the sky as I look at them with frustration.

Y/n: "Get out!!!"

Girl: "Father.. we won't leave you!!"

Y/n: "Please, I'm begging you!! Just leave me behind-"

Boy: "I'm the proud son of the king Y/n L/n. No way I back down and leave you"

I try to break free but struggle to move.

??: "Well well well~ It seems I caught a big fish this time. My luck~"

Y/n: "Kama?! Get back!! I won't let you touch my children!!!"

I open Babylon and begin launching everything I had at Kama.

Y/n: "Go find your mother now!!"

The kids look at me worried and end up doing as I told them.

Kama: "No~ you kids can't leave just yet"

Y/n: "Stay away from them!!"

I use Enkidu to hold her down but she simply blasts my hand away.

Y/n: "AAAAHHH!!!"

The needles disappear as I see Kama grabbing both my children by the neck.

Y/n: "Kama.. please, let the children go. You can kill me if you want!!"

Kama: "But that's not what I'm after"

She begins to squeeze a little tighter.

Boy: "Fa.. ther"

Girl: "Da..Daddy?!"

Y/n: "Nooo!!"

Kama: "What happened? I've never seen you act like this Oh King of Heroes.. could it be?"

She drops both of them and lets them head over to me. Right before I could embrace them though.

*zap*

Two holes were shoot onto their chests as they fall lifelessly into my arms. The horror in my eyes couldn't be measured.

Y/n: "G-Gil.. Angelica.."

Tears ran down my eyes as I held their corpses tightly towards me.

Y/n: "NOOOOOOO!!!"

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Y/n: "NOOOOOOO!!!"

I wake up hyperventilating as I look everywhere to find myself in bed again.

Ahri: "Master are you okay?!"

Ahri along with Mordred enter my room.

Mordred: "What's wrong?!"

Mordred had armed herself with Clarent as she looked around my room.

X: "Nobody has been detected entering the area. Master, what's wrong?"

Everyone had entered my room and saw me in tears.

Mordred: "The hell are you crying for? A nightmare?"

Eucliwood walked passed everyone and sat next to my bed. She brought my head over to her chest and began to gently rub my head.

Y/n: ".. Thank you"

Eucliwood continued as everyone waited patiently for me to calm down.

Gil: "He saw something"

Mordred: "What are you talking about old man?"

X: "Quiet.. mongrel"

Mordred: "Father?!"

Gil: "She's learning from me. Fantastic. Truly worthy of that remark my beautiful queen"

Y/n Alt: "You saw it didn't you?"

Every turns to the window as Alter was standing there with an angry look. I look back last and meet his gaze.

Y/n Alt: "You saw them die didn't you? Now do you see why I hate her some much?! Why we need to get rid of her immediately?!"

Amagi: "Y/n, what did you see"

Y/n: "My children.."

Akagi: "Children?"

Y/n: "I saw my children die.. they died in front of me"

Y/n Alt: "What you saw happened.. I lost my children because of that damned beast!!.. I don't care anymore"

A black chain restrains me as he pushes everyone away. He pulls out a cup with a black liquid inside and walks towards me.

Y/n Alt: "You'll hate me now but you'll thank me eventually. The Black Grail will give you infinite power"

Y/n: "Stop!! I don't need it!!"

Y/n Alt: "You will-"

A golden sword flies past Alter as he sees Gilgamesh with a serious expression.

Y/n Alt: "Are you planning on challenging me?"

Gil: "Of course, even if this body of mine can't withstand me going at 100 percent or even half of that for very much. I can atleast stall enough for him to get free and go all out against you"

Y/n Alt: "You are speaking nothing but fiction Gilgamesh. He will never be able to defeat me"

Alter's armor began to form around him as he walked over to Gilgamesh.

Y/n Alt: "You better take me serious"

Gilgamesh responds by unleashing his golden armor.

Gil: "Trust me, I'll be taking this as serious as I've ever had. Not everyday you get to meet your fake"

Y/n Alt: "Good. Treating me as if I wasn't anything would of been your biggest mistake Golden King"

Gil: "Then come at me as you like Fallen One"

They both open portal unleashing their weapons.

X and Mordred run around and head over towards me to try to free me.

Y/n Alt: "Gate of Babylon Alternative!!"

Gil: "Gate of Babylon!!"

They begin firing at each other as the fight breaks out to the outside.