zachycards: Hello fellow reader, and welcome to my A Certain Scientific Railgun self insert fanfic. Here is the disclaimer, I do not own A Certain Scientific Railgun, or any of the other animes associated with it. I do not own anything in this story, except my oc. I am not making money off of this in any way, any shape or any form. I also do not own the rights to A Certain Scientific Railgun, or any anime associated with it. A Certain Scientific Railgun belongs to and will always belong to Kazuma Kamachi and Motoi Fuyukawa. So, now that the disclaimer is out of the way, let us now move on to the 1st chapter. Hope you all enjoy reading it.

Chapter 1: Railguns And Lucky Strikes

It was just another day in the real world for me, as I slept quietly in my bed. I had just finished watching the third episode of A Certain Scientific Railgun, and had gone to bed for the night.

And, after a bit of time had past, I was sound asleep.

And this would be the start of an adventure that I would be forced to embark on, that I would have never guessed would have happened to me in a million years.

Darkness, I could only see darkness.

However, as a few seconds ticked by, I managed to open my eyes.

However, when I did, I would have wished that I had kept them shut.

Because when I opened them, I found myself standing in an alley looking down. And moreover, I wasn't alone in that alley.

"Sis, you need to focus, we have a situation to deal with here!" a female voice yelled out from in front of me.

It was at this point that I recognized that female voice.

"Wait, Britney Karbowski?! Okay think, what female characters do I know of that she has voiced that would use such a terminology to refer to someone in that manner? I guess there is only way to find out then huh?" I thought to myself.

It was then that I looked up.

And standing a few feet in front of me, with a hand stretched out in a ready position, was none other then Mikoto Misaka of the anime A Certain Scientific Railgun.

And what also looked like a bunch of thugs present in the alley with us.

But this didn't make any sense at all, she was supposed to be a fictional character from a fictional show, right?.

It was also at this moment, that I then did a double take, and realized what Misaka had said to me.

'Sis', why would she be calling me sis? I was a guy, wasn't I?

However, it was when I put a hand on my form to confirm this, that I was soon met with a shock.

My hand had grabbed hold of something small, soft, and to be honest, had a small bit of squeeze to them.

I then looked down to confirm my suspicions.

Breasts, I actually had female breasts.

"Oh, you have got to be kidding me right now!?" *sigh* Well, I guess that makes me a female then now, doesn't it? Well, these are clearly going to take quite a bit of getting used to" I thought to myself.

Albeit they were the same size as Misaka's, but they were female breasts nonetheless.

I then noticed that some strands of light blue hair had fallen into my field of view, when I had looked down, which also made no sense, since that wasn't my original hair color.

"Wait, light blue? I guess that makes sense since I am in an anime. But why does it have to be light blue? I mean it is my favorite color. But still, why light blue? I mean, I guess I will wind up getting used to this as well, as time passes" I thought to myself.

I then noticed that I was wearing an all too familiar school uniform.

It was the Tokiwidai Middle School uniform.

"Ok, that's not like convenient or anything..." I thought to myself with another sigh following after that.

It was then that I knew, that I wasn't a guy anymore, and I was now a sister to the ace of Tokiwidai, the one who they called Railgun.

Which ultimately meant that I possibly possessed the same esper abilities as she did, given us being sisters.

Which possibly made me a Level 5 by default, but this event in the alley would not be enough prove something like that.

Wanting to first confirm my suspicions, as to whether or not I had the abilities of an electromaster like that of Misaka, I decided to try and concentrate.

And sure enough, I was able to feel all of the electricity that was currently present in the air.

But, this still wasn't enough to confirm if I was in fact a level 5 esper or not.

That was something that I would find out about a bit later on.

It was then that I remembered that I had only started watching A Certain Scientific Railgun the night in which I somehow wound up in the actual world of the anime.

How in the world was I going to get through anything past episode three, when I hadn't watched anything past that point.

However, my presence in the world of the anime, as time past, would wind up making the episodes that I would've watched past that point, completely meaningless.

But more on that a bit later.

It was then I realized something else, I was the sibling to the main character here.

I cringed inwardly a little bit at that.

Seeing as how from the first three episodes I had watched of the anime, that Misaka tended to have a bit of a short fuse at times, and on top of that, she was a tsundere.

But despite that, she was kind when she needed to be, and that was good enough for me.

And regarding her being a tsundere, that didn't bother me.

Largely because a tsundere tends to only act as such around someone they love.

But for now, I decided to push those thoughts and feelings to the side, and decided that both Misaka and I would deal with the events when they happened, despite me knowing nothing past the first seasons three episodes.

I then looked back up again, and reached my hand out, mimicking Misaka's hand gesture exactly, and before I knew what was happening, electricity coursed through my hand.

And in an instant, and a big flash of electricity, all of the thugs in the alley were motionless on the ground, and if I'm being honest, the air smelled like burnt electricity.

Like when you leave some toast in the toaster at too high of a setting, and it burns as a result.

That was the smell that was hanging in the air after the electricity had ceased.

And as the seconds ticked by, the smell continued to linger.

But, I only hoped that I would get used to it with time, along with everything else.

Still, I could not believe though that I was in this sort of situation.

Not to mention that I was a sister to the 3rd ranked esper in all of Academy City.

It was at this point that a certain person happened onto the scene, and to be honest, it made my blood run a tad bit cold.

And for some reason, a thought of Tabane Shinonono form Infinite Stratos popped into my head right before she started saying her introduction.

"Halt, In the name of Judgment, we have been alerted to your activities, come quietly or I'll be forced to..."

However, Kuroko Shurai never finished her Judgment officer introduction once she saw Misaka and I in the alley.

"What happened here?" Kuroko asked.

"Oh, hey Kuroko" Misaka said as she turned to face her, electricity crackling right near her head.

"Sissy? And Keiko, you're here too?" Kuroko asked, referring to both Misaka and I.

"I guess Keiko is my name in this world, I guess I can get used to being called it over time" I thought to myself.

Now, to be honest, I was not a fan of Kuroko Shurai in the anime, for obvious reasons, and this was no exception.

However, as it appeared to me at the moment, she seemed to only have an interest in Misaka, like in the anime, and this was something that I was more then happy with.

Given Kuroko's shall we say, perverted tendencies.

And I thought that Tabane Shinonono from Infinite Stratos was very perverted.

If the two of them ever wound up meeting, they would get along quite swimmingly.

Hey, that sounds like a great fanfic Idea for someone, doesn't it?

Actually you know what? I am actually cringing quite a bit at even the thought of that to be honest with you...

Anyway, despite these thoughts, this meant that I couldn't still treat her as a friend, seeing as how I was clearly one to her already.

"I see you still don't skip a beat when it comes to being a Judgment officer, ey Kuroko?" I said flashing her a quick smile.

However, it wouldn't be made clear until later on, that unlike in the anime, Kuroko did not just have an interest for only Misaka, but for me as well.

And this was something that I would soon realize, would present its own set of problems while navigating the events of the series.

It was while we were standing by the vending machine in the park, that just like in episode one of the anime, Misaka kicked the vending machine, causing it to produce a drink from it.

Man, nothing quite like a little vandalism to get yourself a drink and quench yor thirst.

However, unlike Misaka had done, I picked this particular moment, before things quickly got out of hand, to get my drink the proper way, which involved actually using my money to get my drink.

And just like in the anime, Misaka coughed after sipping the drink, not realizing that it was a hot beverage that had been produced from the vending machine.

However, this didn't stop the bots from arriving due to Misaka having kicked the vending machine moments ago.

And it also didn't stop Kuroko from teleporting both Misaka, and apparently also me away from the vending machine as well.

And, right on time, the bots arrived right after Kuroko teleported the both of us onto the overpass nearby.

"You have got to be kidding me right now Kuroko, I was going to drink that you know..." I thought to myself inwardly, as the three of us looked on from the overpass, obviously very annoyed and frustrated with what she had just done.

"Honestly, was that really necessary?" Kuroko asked, obviously referring to Misaka kicking the vending machine.

"Oh Kuroko, I see you don't skip a beat with Misaka, do you?" I thought to myself, as I looked on at the both of them, as a small smile found its way onto my face.

It was then that I remembered something from the first episode of the first season, this was also the day that Tokiwidai was having their system scan.

And if I had to make a bet, Misaka and I might possibly wind up with results that were perhaps the same, if not slightly different.

But, that would become a bit more obvious during the system scan, as to whether or not this was the case.

A short time later, at Tokiwidai, it was becoming more and more clear to me, that the anime really hadn't done this place the proper justice.

And there was one thing that was slightly different from the series regarding the, shall we say, sleeping arrangements, but that is something that we will get to later on.

Anyway, it was while Kuroko Shirai was testing her teleportation abilities that one Mitsuko Kongo, another level 4 esper, decided to interject and sort of mock Kuroko.

Man, Kongo really does love hearing herself talk doesn't she?

However, this was sort of cut short by a series of sonic boom sounds and a series of huge waves of water that seemed to be coming from the school's pool, effectively knocking Kongo on her ass.

My only complaint, is that I wasn't able to see it happen for myself.

Because man, would it have been funny.

What, Kongo talks way too much for her own good.

I mean, wouldn't you want to see her comedically fall on her ass if given the opportunity?

You know what, forget it!

Forget I said anything!

Anyway, the sonic booms that were heard, as it was explained by Kuroko, were being caused by the two aces of Tokiwidai.

Who were currently being tested for their systems scan, by having the water of the pool be used as a buffer for their railguns, and to also more accurately test them.

It was after Kuroko jokingly asked Kongo if she was prepared to get hit by one of our Railguns, that the smirk that had originally been on Kongo's face, was now replaced by a grunt of frustration.

Ah, and what a sight it must have been to see too.

It is always nice when a cocky female character feels humble for a second or two.

Anyways, if I can be completely honest with you regarding me and Misaka's system scan, it was going very well.

This was both exhilarating, terrifying, and also sort of a dream come true, if I was being as literal as I could possibly be.

Who knew that so much power could be released like this.

The anime really didn't do this the justice that it deserved.

These were the thoughts that went through my mind as I watched from the sidelines of the pool, as Misaka's Railgun shot through the pool at quite a good clip of speed, whipping up water in its wake.

"Recording initial shot speed at 1,030 meters per second, rapid fire ability, 8 shots per minute, pattern grouping, 18.9 millimeters, overall rating, level 5" the person on the loudspeaker said.

It was at this point, that I decided to do some math in my head, to try and calculate just how exactly fast that shot speed of Misaka's railgun was recorded at.

"Lets see, a British Aerospace Corporation Concorde's maximum speed in flight is roughly twice the speed of sound, around 1,534.54 miles per hour...lets call it 1,535, or 686 meters per second...so if my math is correct, that would mean that Misaka's railgun just traveled at...Mach 3, or three times the speed of sound" I thought to myself, as I came up with the calculations result.

It was after Misaka had taken her turn and had laid the remaining coins in her hand, tossed them up in the air, and caught them in midair, that she turned her attention to me.

"Ok sis, it's your turn" she said, stepping away from the front of the pool.

It was at this point that I was snapped out of my stupor, after having done my calculation seconds ago.

And to be honest, I was just a little bit nervous.

But despite feeling this way, I took several of the coins that were laying on the exam table near me.

And once I had taken my position in front of the pool, and had placed the coin in between two of my fingers, exactly like Misaka had done.

I concentrated, and then fired.

And to my surprise, a shot of the exact same ferocity and speed shot out across the pool, whipping a good amount of water in its wake, this was then followed up by me repeating this process several more times.

"Recording initial shot speed at 1,030 meters per second, rapid fire ability, 8 shots per minute, pattern grouping, 18.9 millimeters, overall rating, level 5" the person on the loudspeaker said again.

For a moment, I was shocked, but then I was relieved, and as I held one of the remaining coins between two of my fingers, while the remaining ones were clasped in the remainder of my fingers in a closed grip, I couldn't help but crack a small smile, which quickly changed to a slight frown, and then to a confident expression.

"Well, I guess it's official then isn't it? Misaka and I are both level 5's, I guess that means we are both bearing the same nickname of Railgun then? Actually, you know what? Scratch that nickname, why don't I nickname myself something else? I mean since my name is Keiko, which for some reason I know means blessed child, I think I'll nickname myself something similar to that. Let's see...how about Lucky Strike? Yea, I like that. Well, I guess that is settled. I do have a lot ahead of me though. Not to mention my spotty memory regarding the series for both Misaka and me. Well, I guess that's the price one has to pay for being paired with the best of the best doesn't it?" I thought to myself, as I laid all of the coins in my hand, and then tossed them up and caught them in midair, just as Misaka had done before stepping away from the pool.

This was something that I was completely not used to at all.

So, apart from being a female at the same age as Misaka, I now had to learn to bathe like a female as well.

This wasn't made any easier by Kuroko attempting to make an perverted advance on both Misaka and I.

It was at this point that I came to realize, that unlike the anime, where Kuroko was not only interested in Misaka, she also had an interest in me.

Like I had said before, both her and Tabane from Infinite Stratos would make such good friends together.

However, like Misaka, I wasn't having any bit of it.

However, I full knew that this was not the first time, and it certainly wouldn't be the last time that Kuroko would try something like this, and this thought then only proceeded to irritate me further.

But rather then dwell on that, I proceeded to remember that this was who she was, and treat her as the friend that she actually was, despite her very perverted tendencies.

Again, Tabane and Kuroko.

Somebody, make that fanfic happen.

I mean, if that isn't the platform for a crossover fanfic idea for someone, then I don't know what is.

And like Misaka did in the anime, if she attempted something like this again, which I knew from the anime that she would, I could always zap some sense into her like Misaka tended to do.

It was now seeming like things were about to go off to the races very soon.

And I knew, that as all three of us sat at the booth, that the event that was coming up, was going to set both Misaka and I up for the next few episodes.

Well, the first three that I was able to watch before I wound up here.

However, I would never come to realize, that the event that was coming up, was actually what was going to set Misaka and I up not just for the next three episodes, but in fact the rest of the series.

"A fan of ours?" Misaka asked.

"A girl from Judgment, she takes care of my back up at the 177th branch, she's a big supporter, she's always been asking to meet the two of you, even if it's only for a few minutes" Kuroko said.

After a bit of back and forth, and Kuroko saying that she had compiled a schedule for the four of us, it was at this point that Misaka went and took the book that had the schedule out of Kuroko's hands.

Misaka then proceeded to read off what was on the schedule, and as she read off what was on there this met by a look of embarrassment by me for Kuroko's perverted antics.

Again, Tabane and Kuroko, someone write this crossover fanfic idea down, stat!

I already knew what was on her schedule having watched the anime, I just didn't want to look out of place in the situation.

It was at this point that two particular people happened by the window to the restaurant, at the exact moment that Kuroko decided to teleport into Misaka's lap, after Misaka had read what was on the schedule, and after a quick conversation had occurred between the two of them.

These two people, were none other then Ruiko Saten and Kazari Uiharu.

It was at this point that I realized that what was going on at this current moment was very embarrassing, not just for all four of them, but for me as well, seeing as how this had caught the attention of all of the other customers inside of the restaurant.

Ok, let me be brutally honest with you, this was going to be a very tough one to swallow.

Although I knew how this event played out in the series, I was still very very nervous.

I mean, this was a robbery that me and Misaka were going to be helping to stop.

And despite having the same powers as her, and being able to control them as much as her.

I still wasn't entirely confident that I could live up to the reputation that Misaka would wind up having a the end of this event.

But that sort of thing didn't matter to me at this current moment.

What mattered right now was dealing with the task at hand.

And after having made aware, that just like in the anime.

The only reason why we were going to the crepe stand in the first place.

Was because after the whole incident at the restaurant.

A person that was handing out flyers for a crepe stand named "Crepe Rablm".

Which said that the first 100 customers at the stand would get a gekota mascot as a present.

So in other words, we were going there so that Misaka could get her hands on a piece of Gekota merchandise.

I see that that obsession of hers, because lets be completely honest here.

It is an obsession, no question about.

And quite frankly, it hadn't changed at all from in the anime, to me actually witnessing it firsthand...

Not one bit of difference to be had at all.

Anyway, once we had all sat down.

That is, after it was discovered that Misaka had almost missed out on getting her hands on the Gekota merchandise that we had all gone their for in the first place.

Again, Misaka, I swear, that obsession of yours is going to get the better of you one of these days.

And once again, I still don't see the difference at all by the way.

Still I would at least somehow need to work with her on this.

Or at least try.

Anyway, as we all sat down and started eating our respective crepes.

Well, everyone except three of us did.

And this was largely since Kuroko was chasing after Misaka and I trying to get us to take a bite of her crepe.

And it was no surprise that neither of us wanted to have a bite from it.

I mean, who chooses anchovies as a topping anyway?

I like anchovies on pizza if it's any consolation.

But on a crepe?!

Yea, that is just plain wrong!

However, it was while Misaka and I were offering Saten to take a bite of our crepes, that things started to kick off.

It all seemed to happen without any sort of warning.

The metal gates on one of the stores, that for some weird reason were down in the middle of the day, violently exploded outwards, creating a massive explosion, which took everyone in the area by surprise.

This of course sprang both Kuroko and Uiharu into action.

But as Kuroko adorned her Judgment officer sash, and as Misaka offered to help, Kuroko, like in the anime, told her to stay put, and that it was a Judgment Officer's matter.

It was then that I went up to Misaka, put a hand on her shoulder, and decided to speak up.

"Don't worry sis, we'll get our chance, you just wait" I said, as I flashed her a quick smile.

However, before Misaka could turn around and respond, three robbers ran out of the store, only to be stopped dead in their tracks by Kuroko.

It was after Kuroko had said her introduction, and after the robbers had laughed at her.

That one was dumb enough to charge at her.

Kuroko followed this up, that as the robber got close enough, she teleported right next to him, she then spun in place, used his outstretched hand and trailing foot as leverage, and flipped him over, dropping him on the ground face up.

Ok Kuroko may be perverted, *Cough* Tabane and Kuroko *Cough*, but man, can she disable someone or what?

It was at this point, as Saten, Misaka and I watched from the sidelines, that Saten decided to speak up mentioning Kuroko and how she had just dispatched the robber.

"Well that's Kuroko for you" I said, as I cracked a smirk.

It was at this point however, that the smirk wound up leaving my face completely.

As it was found out that one of the kids, that had been on a field trip in the area when the robbery had taken place, was nowhere to be seen.

It was decided that Misaka and I would help look for him, and after some convincing from Saten, she wound up joining in on the search as well.

However, from what I knew from watching the anime, this would wind up doing a whole lot more harm then good.

It was while Misaka and I were searching the bus that had been used for the field trip, and Saten was searching the area around the bus.

Saten wound up catching sight of one of the robbers snatching up a kid and taking him down the street towards a car.

It was at this point, after trying to get me and Misaka's attention, that Saten decided to take it upon herself to pursue the robber to try and retrieve the kid.

However, as Saten was doing so.

Both Misaka and I wound up catching sight of the robber fighting with Saten for the kid, just in time to see him hit her.

This, not surprisingly, angered Misaka.

And I'm just going to be straight with you, seeing her in the anime this way, really didn't do the justice, of seeing her be this way up close and personal.

"Sis!" she angrily said, turning her attention to me, as electricity crackled just beside her head.

"Y-yes sis?" I asked her, clearly a bit frightened by her sudden change in tone.

"You and I have a job to do, what do you say we go and do it?!" she asked in an extremely agitated tone.

Now, to be plainly honest with you.

I don't have a death wish.

No really, I don't.

And I certainly wasn't going to challenge someone like Misaka.

Especially when she was in this sort of state and mood.

So I just simply nodded in response, and followed her off the bus, and down the street towards the robber.

Who had now gotten into the car, and had begun to drive away.

It was at that point that Misaka and I had made our way down the street, about halfway.

And right into the path of the speeding car, as it had now begun to make a u-turn.

Once it had completed its u-turn, it stopped.

It was then that I knew what to do next.

I reached into my skirt pocket, pulled out one of the many arcade coins that lay in there, to which Misaka did the same.

And as we flipped our respective arcade coins, the car began to gain speed towards us.

And once our respective coins managed to come back down again and hit our thumbs, we both fired our respective coins, each producing our respective Railguns,

And to tell you the truth, it was then that I realized.

That as we both looked ahead.

As the car flipped end over end through the air, and over our heads.

With both of our arms as well as our hands that had fired our respective arcade coins.

Still sparking a little with electricity.

And the air around the both of us still astir with dust from our respective Railgun blasts.

And the car crashing down again on the ground nose first.

That, although the future and the events ahead looked rather unknown.

I knew that with Misaka and her friends by my side.

Things would at least be a little bit easier then if I were going at this alone.

End Of Chapter 1