Author's Notes:

I don't own 'A Certain Scientific Railgun' or any of its character's, no copyright is intended.

Italics - Means the person is thinking just so you know

This fanfic is a yuri (girl x girl) don't like? Don't read simple, otherwise enjoy.

This chapter is set later on, long after Mikoto and Kuroko became roommates, and have become close friends with Uiharu and Saten, for a while now.

(This is the last chapter btw)

...

Writer's P.O.V:

It was late afternoon and, Saten, Uiharu, Kuroko and Mikoto were all having a bite to eat at Joseph's (their local café) together.

Uiharu sat happily eating one of her many favourite parfaits, while the biggest smile was on her face, Saten was sitting beside her looking to the other two girls, who were sitting across from her and Uiharu, while she would take a mouthful of her drink every now and again, Kuroko was sitting across from Saten at the table, while she was trying to get her roommate sitting beside her to eat a bit of her cream-filled cake, and Mikoto was sitting beside Kuroko, trying to make the younger girl stop annoying her, without losing her temper and shocking her.

"Come on Sissy, just one bite?" Kuroko tried to persuade more as she held a small piece of cake up to the older girl's lips.

"I'm not hungry Kuroko," Mikoto stated as she glared to the younger girl.

"Aww, I thought you liked cream-filled cake," Kuroko pouted as she frowned to the older girl.

"Yeah I do, but not when you're trying to hand feed it to me like this," Mikoto explained as she pushed the piece of cake away from her mouth with one hand.

"Then would you rather me feed it to you by mouth instead?" Kuroko asked as she smirked to the older girl.

"WHAT? NO! Geez what is wrong with you?" Mikoto asked as she raised her voice, while she was blushing slightly.

"Aww it's just cake Sissy, it won't harm you, I promise,"

"No, I don't want any," Mikoto denied Kuroko's offer again, as she folded her arms and turned away from the younger girl, while she was still blushing slightly.

"Hey I've been wondering about something for a while now," Saten spoke up, catching the other girls' attention.

"What have you been wondering about Saten?" Uiharu asked as she looked to her classmate, before she gulped down a big spoonful of her ice cream parfait happily, while the other two girls just looked to Saten, waiting for her to answer Uiharu's question.

"How did you and Shirai-san meet and become roommates, Misaka?" Saten asked casually.

"Err…well…" Mikoto paused as she looked to Kuroko for a minute, while Kuroko just sat staring blankly at Saten.

"You know, I've been wondering about that for a while as well," Uiharu sated as she smiled to Kuroko and Mikoto.

"I mean you put up with Shirai-san's teasing and assaults so much, it's hard to believe you would agree to be her roommate if she was constantly annoying you. Or did she used to be different? Although if that's the case, I doubt you would still be her roommate now," Saten rambled on a bit as she was basically just thinking out loud right now.

"I only 'tease' her like this because I want to show her how much she means to be, plus I know she likes me doing it to her deep down," Kuroko explained with another smirk to her roommate.

"What? Is that true Misaka?" Uiharu asked as her and Saten looked to the older girl, with surprised wide eyes.

"No it isn't," Mikoto stated as she turned away from the other three girls.

"Then how come you're always the one that flirts with me when we're alone?" Kuroko asked.

"I'M NOT! I have never…flirted with you," Mikoto stated as she felt like shutting Kuroko up with a few good electric shocks.

"Anyway, won't you tell us how you two met?" Saten asked, changing the subject back to the question that she had originally asked.

"Well…Kuroko would always tell me off for using my ability when it wasn't all that necessary, and for the fact that I used to get into fights all the time. She was so bossy back then, so I just thought of her as the annoying girl, who acted like some teacher just because she was in Judgement," Mikoto explained as she started to tell the younger girls about how she met Kuroko (even though it was all just a lie).

Saten and Uiharu sat quietly, as they listed to the older girl with interest, while Kuroko just looked to her roommate with a wondering look in her eyes.

"But one day, she was having some trouble with some gang full of guys, I saw her and decided to give her a hand with them, since I really can't stand to see those gangs treat people the way they do. Not long after that Kuroko started to avoid me an awful lot, until one night where she broke into my dorm room, and told me that she wanted to become friends with me. Turns out she wanted to repay me for helping her out with those guys that day. I agreed to it, and soon one thing led to another and we became roommates and close friends. Yes I know she can often be annoying and all that, but I know that she's a good friend, who will always come through for me. Besides if she can put up with my childish side, then I can deal with her being a little forceful towards me from time to time," Mikoto took a deep breath, as she finished telling her story, and just smiled to Saten and Uiharu.

"Wow, so that's how it happened," Saten thought out loud as she sat back in her seat and gulped down the last of her drink, while Uiharu just nodded and smiled to the older girl, who was sitting across from her.

"Sissy, I'm so happy to hear how you really think of me," Kuroko stated as she wrapped her arms around Mikoto's neck and hugged her tightly. Mikoto just sighed as she rolled her eyes at Kuroko clinging to her.

"What about you two?" How did you meet each other?" Mikoto asked as she looked back to Saten and Uiharu again.

"Us? We met and became friends because we've always been in the same class, and we've always sat close to one another," Uiharu explained, while Saten just nodded in agreement.

"But doesn't it bother you that Saten always flips your skirt up?" Mikoto asked, while she tried to get out of Kuroko's tight hug.

"Yeah, but I think it's like how you feel about Shirai-san, yes she can get annoying every now and again, but she really is a great friend, who I know will always be there for me whenever I need her," Uiharu explained with a smile.

"Aww Uiharu, you say the cutest things sometimes," Saten stated happily, before she gave Uiharu a tight hug, while Mikoto just nodded and smiled to the younger girls slightly.

Uiharu smiled back to Saten as she hugged her back, before the two let go of each other, and Uiharu went back to eating her ice cream parfait happily.

"Hey Sissy, do you want that piece of my cream-filled cake now?" Kuroko asked with a smile to the older girl.

Mikoto looked to Kuroko for a minute, before she answered her, "I already said, that I didn't want any, Kuroko," she refused the younger girl's offer again.

"Aww but Sissy," Kuroko pouted again as she whined to Mikoto slightly, while the older girl just turned away from her again.

Saten and Uiharu just chuckled slightly as they both smiled to the other girls, acting like they always do.

….

Writer's P.O.V:

Later when Uiharu and Saten had gone back to their rooms', and Kuroko and Mikoto had gone back to their dorm room, Kuroko was being a little quiet as her and Mikoto were getting ready to go to bed.

"What's wrong, Kuroko? You seem awfully quiet all of a sudden," Mikoto asked as she seemed a little concerned about the younger girl, while both of the girls had just finished getting dressed for bed.

"It's nothing, I'm just a little tired," Kuroko stated casually, not looking to her roommate, while she sat on her bed, looking at the bedsheets.

"You sure?" Mikoto asked knowing that Kuroko's answer was just a lie.

Kuroko just nodded in reply, before Mikoto sighed slightly and sat on her own bed.

"Sissy, you lied," Kuroko whispered to Mikoto, while she clenched her fist slightly.

"What do you mean Kuroko?" Mikoto asked.

"You lied to Uiharu and Saten about how you and I met," Kuroko stated as she now slightly glanced to the older girl.

"Yeah, I know," Mikoto replied as she smiled slightly to the younger girl.

"Why?" Kuroko asked as she was now looking the older girl in the eyes, "Are you ashamed to tell them about that side of you?" the Teleporter asked as she stood up from her bed, and walked over to her roommate.

Mikoto looked to the younger girl for a minute, before she just sighed and turned away from her, "That side of me doesn't exist anymore," she casually stated.

"Oh really?" Kuroko asked with a raised eyebrow.

Mikoto just nodded in reply, "Besides you promised me that you'd keep what happened between us on that night a secret, so it's only fair that I do the same, right? Even if they are our friends," Mikoto explained as she looked back to Kuroko with a slight smile.

Kuroko glared to her roommate slightly, "Then Kiss me," she said with a serious tone in her voice.

"WHAT? WHY?!" Mikoto asked, backing away from Kuroko slightly, surprised by what she had just told her to do.

"If you can kiss me without any hesitation or emotion, and not turn it into something more. Then I'll believe that that side of you is gone," Kuroko stated offering the older girl a deal.

Mikoto thought over the 'deal' that the younger girl had just offered her for a moment, before she shook her head slightly, "Just go to bed, Kuroko," she said, before she turned away from Kuroko again.

"I won't believe you, if you don't do it," Kuroko stated as she teleported onto Mikoto's bed and sat in front of her, looking the older girl in the eyes again.

Mikoto looked to Kuroko silently, before she sighed again, "Fine, but just this once alright?" she warned as she seemed to have given up now.

Kuroko smiled, happy that the older girl had agreed to her 'deal', before she thought of something, "Oh, and it has to be a kiss on the lips," she pointed out.

"Got it," Mikoto replied with a nod.

Kuroko closed her eyes and stayed completely still, while she waited for the older girl's lips to meet her's. Mikoto looked to Kuroko nervously as a slight blush stained her cheeks, and she slowly swallowed. She moved closer to Kuroko and took a deep breath, before she moved closer again.

Kuroko shivered slightly as she could feel the older girl's breath on her lips, 'What is she waiting for?' the Teleporter wondered as she sat up straight on Mikoto's bed, and carried on waiting for the older girl to kiss her.

Mikoto sighed again before she shrugged her shoulders slightly, and put two fingers up to her lips. She soaked the two fingers in her saliva, before she leaned closer to Kuroko and pressed the tips of her soaked fingers against the younger girl's lips, while she made a small 'chu' noise (kissing sound) in a whispered tone.

Kuroko opened her eyes as she felt Mikoto's wet fingers press against her lips, and looked to the older girl with a slight pout, "What happened Sissy? You used to love kissing me," the Teleporter asked as she moved the older girl's fingers away from her lips.

"I'm going to sleep," Mikoto stated before she turned away from the younger girl, and lay down in her bed, pulling the covers over her head, so she couldn't see Kuroko.

"Aww but Sissy, that wasn't a real kiss," Kuroko whined as she pouted to the older girl again.

"Get off my bed!" Mikoto instructed sternly.

Kuroko just sighed, deciding not to push anymore and make the older girl angry, as she just got up from Mikoto's bed and went and sat on her own again, "I still don't believe that that side of you is really gone, Sissy," she stated before she settled down into her bed, and pulled the covers over her.

Mikoto just lay there, head still under the covers as she let out another slight sigh.

….

Mikoto's P.O.V:

It was no use, I had tried everything, but I just couldn't get to sleep. After what had just happened with Kuroko, thoughts of her just wouldn't leave my mind.

I didn't feel the urge to kiss her when she told me to, but I can defiantly feel l it now. As I rolled over in my bed to look at Kuroko. I sighed slightly as Kuroko was sleeping peacefully, but was turned away from me at the moment.

Oh how I wanted to just go over to her, strip her down, and violate that irresistible body of her's. 'Wait a minute, what am I thinking? I shouldn't be thinking about Kuroko like this, that old creepy and perverted side of me is gone now, right?' I thought before I sighed again, 'What's wrong with me?' I wondered, before I sat up in my bed, and ran my fingers through my hair.

'Maybe Kuroko's right, maybe that side of me never really went away, and is still a part of me after all. Maybe I haven't changed at all since that night when I did all those things to her at that party,' I thought as I looked to Kuroko again, and smiled when I heard her sigh slightly in her sleep.

Suddenly I felt a familiar wetness beginning to soak my underwear, and crossed my legs, while I blushed deeply, 'Oh no, don't tell me I'm getting turned on just from looking at her,' I cursed myself mentally.

'I can't just try and 'take care' of this on my own, I'll end up moaning too much, Kuroko will wake up, I can't let her see me in a situation like that. Damn it!' I was quietly freaking out to myself, as I tried to just endure the need to pleasure myself, while I was also still trying to ignore the nagging urge to go over, and violate Kuroko's sweet body.

I covered my lips with my fist and bit my lip tightly, as the need to pleasure myself was getting harder to endure by the second,

"Ahh…" I heard myself moan slightly as the area between my legs became wetter, while I bit my lip harder, almost to the point where I was making it bleed, 'I can't keep enduring this much longer, I need to do something before it's too late,' I thought before I looked to Kuroko sleeping soundly again, and took a deep breath.

I slowly got off my bed, as I walked over to Kuroko's and sat on it, before I shook Kuroko's shoulder, trying to wake her up. Kuroko stirred in her sleep a little, before she opened her eyes and looked to me.

"Hey, what's wrong Sissy? Can't you sleep?" Kuroko asked as she sat up in her bed and rubbed her tried eyes, while yawning slightly.

I couldn't even answer her as she just looked way too irresistible, as she looked to me with tired, wondering eyes, "Kuroko, I'm sorry," was all I could say as I rested a hand on Kuroko's cheek, and gazed into her eyes.

"Huh, what do you me-

I cut Kuroko off as I pressed my lips to her's and immediately pushed my tongue into her mouth. I could tell she was surprised at first as she froze up, but she soon melted into the kiss and started to moan a little, while I deepened our kiss and pushed her down onto the bed, pinning her down harshly.

Kissing her again felt amazing as I smiled into the kiss, and could taste the faint minty toothpaste that Kuroko had used to brush her teeth earlier on my lips. The taste mixed along with Kuroko's sweet saliva made my tongue tingle, and soon became addicting to me.

But I knew this would end soon as I could feel my breath running short. I licked Kuroko's teeth and bit her bottom lip, as her slight moans were urging me on more, while I was letting my eager hands explore every part of her neck and collar-bone. I stroked her smooth skin, and would pinch at it slightly every now and again.

I was soon running out of breath and sighed into Kuroko's mouth slightly, before I broke our kiss and pulled myself away from her, as I just sat turned away from her, blushing deeply, while I was now keeping my hands to myself, and not daring to look at her.

"Sissy," was all I heard her manage to gasp out as she lay there, panting heavily, trying to catch her breath, while she looked up to me with slightly surprised, wide eyes, and blushed deeply, just like I was at the moment.

"Sorry," I whispered as I bit my lips slightly, while still not daring to look at Kuroko.

"What are you apologizing for?" Kuroko asked me as she sat up on the bed, and was finally able to catch her breath.

"I didn't kiss you earlier when you told me to, because I didn't want that desire for you to come back again, but it came back anyway. Back when I did all those things to you on that night, I didn't care if I hurt you, I didn't care if I made you cry, and to be honest that's what I really wanted. I wanted to hurt you, to make you black and bloody, I wanted to make you cry and beg me to stop, but you didn't. I didn't care if any of the other girls heard, or saw us, I didn't care about anything, but having my way with your body, and you just stood there and let me do whatever I wanted. I-I didn't want that happening again, b-because I didn't know how far I would go. I was scared, I didn't want to kiss you because I didn't know where I would stop, or if I even would stop. I didn't want to end up hurting you Kuroko, back then you were just some girl that I lusted after, I didn't even know your name. But now we're roommates and close friends, so I didn't want to hurt you, Kuroko," I poured my heart and all my feelings out to Kuroko, I told her about all my fears and worries, all the while I was still turned away from her, as I could just about bite back the tears that I could feel coming on.

I didn't know what to expect as Kuroko seemed silent, but a minute later I was surprised to feel Kuroko suddenly hug me tightly.

….

Writer's P.O.V:

While Mikoto sat there, pouring her heart of all that she felt, Kuroko sat wide-eyed as she had never seen her roommate like this before, 'She looks close to tears,' Kuroko thought with a slight sigh, before she moved closer to the older girl, and wrapped her arms around her tightly, and hugged her.

"That won't happen Sissy, you've changed since then, and you were able to stop yourself. Even though that side of you came back, you were able to fight it," Kuroko stated as she looked to Mikoto with a smile.

"Kuroko?" Mikoto looked to the younger girl with wide eyes, while slight tears ran down her cheeks.

"You could never hurt me, no matter how much I annoy and tease you," Kuroko joked as she smiled when she was able to make the older girl smile and chuckle slightly.

"H-how can you be so sure?" Mikoto asked as she wiped away her tears.

"Because I know my Sissy could never hurt me, not even if you wanted to," Kuroko explained, before she lightly lay a kiss on the older girl's forehead, "Besides now I believe that that side of you is gone, you did what I told you to after all," Kuroko stated.

"But Kuroko I-

"I told you to kiss me on the lips, without any hesitation or emotion, and not turn it into something more, you did exactly that Sissy. You could've kept going just then, but you didn't, that alone shows me that that side of you is gone now, or at least not in control of you anymore," Kuroko explained as she cut Mikoto off, and smiled to her again.

"Thanks Kuroko," Mikoto smiled back to Kuroko, as the younger girl cupped her cheeks and kissed her on the lips lightly.

"You should try and get some sleep now, Sissy," kuroko stated as she let go of the older girl.

"Yeah…but I can't yet," Mikoto stated nervously as she remembered something, and blushed slightly.

"Why not?" Kuroko asked with a slight frown to the older girl.

"I need to change my underwear," Mikoto confessed.

"Why…you're wet, aren't you Sissy?" Kuroko asked with a slight smirk.

"Soaked actually," Mikoto replied with a slight chuckle to the younger girl.

"Well you know I could take care of that for you,"

"Shut up, before I shock you," Mikoto warned sternly with a slight smirk on her lips.

"Right, sorry," Kuroko apologized with a nervous smile to the older girl.

Mikoto just smiled to Kuroko slightly, before she got off the younger girl's bed and went and changed her underwear, while Kuroko settled back down under the covers, as she watched her roommate climb back into her bed, and turn to face her for a minute.

"Don't worry Sissy, I won't ask you to kiss me again," Kuroko stated with another smile to the older girl.

"Goodnight Kuroko," Mikoto said with a smile back to the younger girl.

"Goodnight Sissy," Kuroko replied before she made herself comfortable, and closed her eyes slowly.

Mikoto smiled to Kuroko again, before she rolled over in her bed as she pulled the covers up close to her, and soon closed her eyes as well. And sure enough the two young girls were soon sleeping soundly.

And since that night Mikoto's strange, but strong desire for the young Teleporter girl has gone away again, and hasn't returned once, but the two roommates will always know about it.

It's their little secret about a different side to the Railgun, which only they will ever know about.

...

Thank you for reading :D

Killerchainsaw ;)