FOREWORD

Hello Everyone! I'm Redbestgirl, and a nice idea popped into my head and I thought of writing it down. Now, I must make a few premises:

First of all: English is not my first language (although I have studied it for quite a bit), so I hope you guys will tolerate my occasionally poor choice of words, as my vocabulary is not very large.

Second: I am writing this just for fun. I'll try to upload chapters as much as I can, but I am currently in my freshman year in university, so that will take priority on writing obviously.

Third: Please do not expect the releases to be regular in any way, unless otherwise specified by Mr. Future Redbestgirl. I might upload the new chapter one day after the previous one or a month may pass without hearing from me at all. As before, I'll try to be as consistent as possible, but I'm not making any promises.

Fourth: Constructive criticism is VERY MUCH APPRECIATED. I'm not planning on becoming a writer any time soon, but I still want feedback that will help me improve. But please, try to keep it constructive and not just throw insults at me, because they get to me. Really. I promise.

Fifth: Holy crap there's a lot of premises. Well whatever. Every character in this story does NOT belong to me, unless otherwise stated. I might add some original things to non original characters though, and if the stuff I write happens to be similar or the exact copy to some other fan-fiction works, then it belongs to the writers of those stories IF they wrote it before I published it. I think that's how it works? I dunno, if someone can clarify, that will be very much appreciated. Obviously, Fate/Stay Night and any of its spinoffs, and the whole Fate franchise, belong to Kinoko Nasu. I feel like that's a given but better get it out there.

Sixth: I am NOT an expert on the Fate franchise. If I get something wrong, or if sometimes a character does something that is out of character, please just consider it canon in my story and let it slide, as I'm trying to write a story that is mainly funny and epic above everything else, even though I might slip in some emotional moments. Also expect some stretches to be made.

Oh boy that was a lot of premises, but I figured that it's better to be safe than sorry, since this is my first time doing this. I am really sorry for wasting your time on that, so now we're diving straight into this story. Also, let's say it's rated M, just to be safe.

Narration

"Speech"

Thoughts

(*Author talking*)

FOREWORD END

Chapter 1: Dimention Creator 1000, Model DG2

"...I'm bored. Like, a lot."

One would expect that being able to travel between dimentions forever thanks to your immortality as a dead apostle and your knowledge of the Second Sorcery would never cease to be entertaining. Kishua Zelretch Schweinorg would disagree.

"...I could never have imagined that war could get boring. I mean, the fights are still epic, but when you've seen them thousands of times, they just... burn out, after a while."

Kaleidoscope was able to experience all that there is to experience. He traveled between dimentions on a daily basis. He created two artifacts that allow the user to transform into a magical girl of all things, just because he thought it would be funny to give them to one of the versions of his apprentice, Tohsaka Rin. It damn was, but as always it stopped being so after a while. Like everything else. But this time... a couple of things caught his interest.

"Super Smash Bros, huh... that looks like a fun game... maybe... yes... YES! I think that could work! Oh, I'm going to enjoy doing this."

So, it is clear that one of the things that caught his interest was the famous video game series: Super Smash Brothers. Rightfully so, as it's one of the most fun games to play, even across infinite dimentions, which is quite an achievement. But what's the other thing that caught his interest, between all the things and concepts that span across the infinite reach of the Second Sorcery?

"So, if I do this, and then that, that connects to here... yes, I think it's possible. Let's install a safety measure, just to be sure. Okay, that should work perfectly. Let's give this a test."

What was now beginning its test drive was the affectionately named 'Customizable Dimention Creator 1000, Model DG2', which was fresh out of the Kaleidoscope's mind. But you might be asking yourself: how the hell did he make a machine that just conveniently spits out custom-made dimentions with custom-made rules and laws of physics? Answer n°1: he's immortal. He has an infinite amount of time to complete a project. Answer n°2: he's Kishua Zelretch freaking Schweinorg. He can do whatever the hell he wants, and nobody can predict his actions in the slightest. More importantly, the machine was now starting up, with a startup sound very similar to a certain loud startup sound.

"Holy crap, that's the loudest thing I've ever heard. Let's turn down the volume a bit."

The machine had a display that read the options 'Create New Dimention', 'Edit Existing Dimention', and 'Delete Dimention'. Let's hope he never selects option three.

"Ok. Create Dimention. Normal laws of physics and magic, able to be transported to..."

He spent a while customizing the options of his new dimention. But the thought of creating customizable dimentions certainly wasn't the thing that interested him. The machine would surely be used as a means to an end, as a way to make his interest grow into fun and entertainment. And so, we arrive at the second thing that interested him...

"Aaaaand... done! Now, to go grab the would-be players of this game..."

Emiya Shirou was currently enjoying his evening. He had just finished doing the cleaning around his house along with his kouhai/girlfriend Sakura, and since his house was very big, it took quite a while and was fairly tiring even for two as skilled in the housework as them. Having gotten all of that done it was time for some lazing around, watching the TV in his living room until it was time to make dinner. He and Sakura would often compete for who would make dinner, much to the enjoyment of his caretaker (more like freeloader) Fujimura Taiga, as that would mean they would both improve their already superb cooking skills which would then satisfy her gluttonous self. Today however there was no competition, as kouhai and senpai started making the meal together.

"Senpai, do you have any plans for today's dinner, or are you planning as you cook?"

"Yeah, I'm kinda winging this to be honest. Why do you ask? Do you have any ideas?"

"Mhm, I thought we could use some of that leftover rice to make some onigiri and have a light dinner today, as tomorrow I'd like to go see the cherry blossoms with Senpai."

Both of them blush, especially Sakura.

"I-I'm sorry Senpai! I made an unreasonable request, you must already have plans for t-tomorrow, as it's a week day, right? Forget what I s-"

Embarassed, Sakura tries to take back what she said, but Shirou stops her.

"W-wait, Sakura! I-I don't have any plans, I was just surprised. I-I'd love to go, I was just startled because the offer was a bit sudden."

A certain third-party observer took secret pleasure to see Sakura's face light up with pure, childish happiness at that response.

"Y-yes, Senpai, I-I'll be in your care for tomorrow."

"Y-yeah."

Shirou still wasn't used to having a girlfriend, as it only was a month after the Holy Grail War had ended, and a certain Second Owner had left for the Clocktower to settle the aftermath. He could definitely say that it was nice though.

Sakura meanwhile was trying her best to find a way to atone for the deaths of the innocents that died during the war at the hands of her shadow as a Holy Grail vessel, with the words Shirou had spoken to her on that fateful night, when she had already given up and accepted to become the mother of all the world's evil, acting as a guiding light for her actions and as her reason to keep living. She had hope that she would find a way to atone for her sins. Her Senpai had said so, and she had total faith in him. After all, he put her above all other people.

"Sakura, Shirou, do you need to buy anything for dinner? I can go for you if you'd like."

That third-party observer made herself known to the two of them, causing the lovers to jump away from each other in embarassment.

"R-Rider! Don't startle me like that!"

Rider smiled warmly.

"Sorry Sakura, I didn't mean to startle you. As I was saying, do you need to buy anything? If it's urgent, I can use bicicle N°1 to do it faster..." As she said this, her smile turned into a smirk and her gaze locked into Shirou.

"No, Rider, thank you for your concern, but there's no need for you to use my bi- to buy anything, as we're making a light dinner today."

Shirou's face was still very much red, but he had caught on to what Rider's ulterior motive was. After all, that A+ Riding skill was like an itch that needed to be scratched after a while, and even if it wasn't mandatory, it felt good to have a joyride once every now and then. But Shirou had make that mistake once, and promised not to let Rider touch his beloved n°1 again... else he'd have to replace every component of the bike, which costed more than buying a new bike, but he really liked that one as it was a present from Taiga. Also he didn't want to pay for another car crash. Rider was a Servant after all, and she rode a bike like one. Which is, to say,in an extremely fast and reckless way.

"Oh, nevermind then. I'll go watch some TV."

Trying, and failing, to get rid of her disappointment, Rider sulkily sat on the tatami floor, and changed channel until she found a program she was interested in.

"Actually, it's not urgent, but it still needs to be done. Rider, can you do me a favor and go buy some bread? I need it for tomorrow's packed lunch. You can use n°2 if you want."

Shirou's words failed to completely get rid of her disappointment, but she had nothing better to do, so she just nodded. Taking the money from where Shirou had put it on the table, she left to the shopping district.

On her way, she started thinking about recent and not so recent events.

The fateful night when she took Sakura and Rin to the Tohsaka manor to get them healed up, while Shirou fought against all the world's evil...

The day when her sisters decided to come to the island she was banished to out of pity...

The day she and Sakura made their contract...

The day Shirou, Sakura and Rin helped her choose her mystic eye-killer glasses...

The day Shirou told her that he wouldn't abandon Sakura, no matter what...

As she was thinking of that day, a thought occured to her.

Now that I think about it, that day Shirou told me that he made love to Sakura... what if he sent me out to buy bread in order to have some alone time with her?

"... Fufu."

An idea started to form in her mind, as she smirked and quickened her steps. She would return earlier than expected and catch them in lovey-dovey mode, and tease the hell out of Shirou and her master for the rest of the week. She was usually not the trickster type, but even she wanted to have fun once in a while. Totally not revenge for not letting her use n°1.

"Yeah, this and that are different... Fufu..."

"Thinking evil thoughts, aren't we?"

"Gah!"

Rider was startled as an old man seemingly appeared out of nowhere right in front of her. It couldn't be an invisibility spell, as no magi would be capable to elude her Servant senses. So this man had literally come out of nowhere.

"Oh sorry, did I spook you? I always forget that appearing near people could produce such an effect."

"I-I'm sorry, who are you? No, what are you? There's no human that could appear out of nowhere like that."

"Don't worry, I'm just a guy that is bored out of his mind. Mind helping me get rid of my boredom?"

Rider raised an eyebrow. Was this man doing what was called 'hitting on women'?

"No, I am not doing such a mundane thing as that. I merely need your help in setting up something."

"Did... did you just read my mind?"

"Technically? No. I merely predicted- Oh, who cares. Will you help me or not? I can assure you it's not anything nefarious, as it's just to set up a...friendly competition of sorts. A game, if you will."

Rider was shocked. It's like this man knew everything that would happen, as if he'd seen her reactions already, even though they never even met before that day. Also, a game? What kind of game would need her help to be set up?

"Sigh... what do you need my help for?"

"You just need to gather your master and his lover in a space that is roughly the size of a bedroom, indoors if possible."

She went from shocked to alarmed. Did this man know of her master? Was he plotting something? Well, that was obvious, but was it something dangerous?

"Oh, for the love of- here, I'll sign a geis with you right now. I swear that what I have in mind will not lead to the death or permanent harm of anyone involved, and when it's over, you, your master and her boyfriend will be returned here in exactly the same state, if not stronger and better, than they were before the whole affair. In exchange, you will help me make the preparations that I said before and you will not say a word of this to the people involved until I say you can. Nothing else. If I accidentally left any loopholes that you spot, you can just tell me and I will adjust the contract accordingly. How about it?"

Rider found several loopholes that the man could've exploited. But to his credit, he did as promised and patched all of them up, until not even she could find anymore. She even found some loopholes that were to her advantage, but the guy didn't even notice them. Or if he did, he didn't seem to care. She would keep them in mind in case the old man pulled a Kiritsugu on her.

"So, before I accept anything, what is this game you're talking about?"

"Oh, let's just say it'll involve your master's lover going on a bit of a... how do kids today call it? A ride? Yeah, a bit of a ride, let's settle with that."

"A bit of a ride, huh..."

Maybe it was because this man could obviously be dangerous since he sneaked up on her of all people. Maybe it was because of her idea from before. But a smirk started to form on her face.

"Fufu... this will be fun Shirou..."

"Hey, Sakura."

"Yes, Senpai?"

"Don't you think Rider is taking a bit too much to return?"

Shirou and Sakura had finished making dinner, and the redhead had sit down at his usual place around the table. After a while, Sakura sat down next to him and rested her head on his left shoulder, where he once had another arm attached. Not on this new body though. As she leaned on him, he gently got his arm out of her way and gently laid it around her shoulders. Snuggled together like this, they were relaxing and watching TV, waiting for Rider to come back before starting to eat dinner.

"Maybe, but... I know this sounds wrong but... I want her to return as late as possible."

Shirou chuckled as he heard that. "Maybe you should try comunicating through telepathy. She's your Servant after all."

"Mhm... I'll give it a try..."

Sakura started reaching for Rider's mind, but she stopped as the only thought Rider shared with her was an image of her with both her thumbs up and only the words "Do your best".

"So... what did she say?"

"N-n-nothing, she cut off the telepathic link for some reason..." Blushing furiously, Sakura shifted a bit, but her lover didn't seem to notice.

"Huh, strange... well, she is a Servant, so she shouldn't be in danger. She probably has a good reason for it."

"Y-yeah..."

Sakura snuggled closer to Shirou and rested her head against his chest.

Suddently, the alarm bounded field made a noise, signifying that someone with malicious intent entered the property. At the same time, they heard the door slam open. As Rider stormed the room, both Shirou and Sakura where ready for battle.

"Rider! Are you hurt? Did someone attack you?"

"Master! Quick! Let's stand in a triangle formation and be ready, as a swarm of enemies will soon fill the house! It's better if we all stay in one place!" As she said that, Rider wore her Servant outfit and slammed shut all the living room doors.

"A-alright! Senpai!"

Sakura turned to Shirou, as he nodded to her and Rider. They soon got into a triangle formation, with their backs to each other, each facing an entrance to the room. As soon as he did that...

"Now, old man!"

"Huh!?"

Before Shirou and Sakura could react, the three of them were swallowed in a green light and disappeared from the dimention.

Shirou's brain was on fire, trying to process all the things that happened at once. If too much and too varied information is acquired by the brain in too little time, the thoughts will stop working for a little while due to information overload, much like a computer with little RAM and a crappy CPU when you click on the Google Chrome icon too many times. However, the threshold for the human brain is much higher than the threshold for a machine; thus, only an insane amount of information, with an insane degree of variety, could produce such an effect on a person. This goes to show that what happened was impossibly weird, and happened impossibly quickly, even for magi standards. But after a while, Shirou's brain started working again, and he quicly pieced together that they were being transported somewhere.

But only a Caster Servant would have access to telepotration magic... wait, why did Rider shout like that? It's almost like she gave a signal to someone... did she betray us? No. Impossible. But then... why did the alarm go off? More importantly, where are we going now? Is Sakura ok? I don't feel any danger anymore...

His senses started to return, and he found himself in a small room, with his back still to Rider and Sakura.

"What... what just happened...?"

Sakura began screaming at her Servant.

"Rider! What is the meaning of this!?"

"I'm sorry Sakura, but it needed to be done. Though, if you ask me what happened, even I do not know..."

"What do you mean, it needed to be done!? What are you talking about!? Who's that 'old man'!?"

"I... I do not know. I just know that this will not bring any permanent harm for us. An old man asked me for help, and since what he needed happened to... align with my interests... I decided to help him out."

Now it was Shirou's turn to scold her.

"What do you mean, 'align with your interests'! Do your interests involve us disappearing suddently from home and arriving somewhere unknown?"

"...I do not yet know that..."

"Ugh. This all makes no sense..."

"Hey. Calm down."

Suddently, a voice from a speaker very close to Shirou's ear, startling him.

"GAH! Who... who are you? Why did you do this?"

"Now now... let's just calm down for a second. If you want to know, go through that door first."

Shirou noticed the door the voice was talking about.

"Should... should we go?"

"I don't know... why don't you try first, Senpai?"

Sakura made an angelic smile.

"Ugh, I can't say no if you make that face..."

Shirou opens the door and carefully, as if deactivating a nuclear warhead, he stepped through.

The door led to a small, dark corridor. After taking a bunch of turns, the three of them started to see a light at the end of it. As they came out, they were shocked by what they were looking at. After all, the first thing they saw were three other Shirous.

Chapter 1 End

So, this is the first chapter to this series. I did my best, and I gotta say that I'm quite proud of it, so I'm ready to have my pride shattered by the reviews. If there are any even.

About the story:

I tried keeping the characters as in character as possible, though I took some liberties here and there. So, what do you think of the idea? It's probably already been done before, but I wanted to have a go at it. Battle Royale between the Shirous. It's gonna be lit. At least I hope.

Thank you for reading, and see you next chapter!