KuroMiko

From here out I've decided, for the sake of consistency, to address all characters by their first name in narration. I hope this isn't too confusing or annoying. Kazari = Uiharu and Ruiko = Saten.

---

Mikoto stopped in her tracks as two first-years ran up to her, calling her name. "Misaka-san! You're Misaka-san, right?" They flagged the Railgun down as they approached.

"Hm? Yes, that's me."

A perky brunette sporting a ponytail greeted her properly with a bow, while the other girl caught her breath. "Misaka-san, hi! Sorry to bother you. I'm Miyu Atane, remember me? We worked together for that volunteer project last month?"

Mikoto didn't remember her.

"Oh yeah, Atane-san. Um, what's up?"

"Hitamura-sensei saw you leaving and asked me to catch up with you. She said she needs you to bring that form in tomorrow."

Mikoto smiled back politely, scanning from her peripheral vision for that ever-present source of potential embarrassment who would surely be showing up any minute now. "Okay...thanks for running all the way out here. I appreciate it."

Signaled by the telltale warping noise, Kuroko appeared next to Mikoto, grabbing hold of her Onee-sama's arm and hanging on it shamelessly.

"Onee-sama! Why are you still lagging back here?" she scolded. "We ordered a deluxe jumbo parfait; you'd better hurry if you want to share some of it. Uiharu will eat it all before you get there!"

The shorter raven-haired girl who had been panting too hard to speak now addressed Mikoto with a slightly patronizing tone. "So you're Misaka Mikoto, the legendary Railgun? It's an honor to finally meet you! Aren't you like the most powerful person in Academy City?"

Waving the notion off, Mikoto replied humbly, "No no, I'm sure there are espers more powerful than me. I'm nothing special, really!"

Kuroko tugged on her arm with urgency, furrowing her brow to show her displeasure.

"Ehhh, is that so..." mused the girl. Her eyes darted from Mikoto to the smaller twin-tailed girl clinging at her side, then back again. A knowing grin cracked at the corner of her lips, making Mikoto feel unsettled. "Heh, you know, I also heard this rumor..."

Just then two more girls came barging onto the scene, shouting vivaciously. "Miyu-chan! Aka-chan! Let's go! Come on!"

Mikoto's eye twitched. "You heard what?" she growled under her breath.

But the girls had already turned her back and were giggling with their friends as they walked away. Mikoto stood stewing for a second.

"You...heard...what?" she asked to nobody, clenching a fist.

"Maa! Maa! Come onnnn, Onee-sama! Who cares about those girls, let's go!" Kuroko was pulling with all her weight now.

With a cluck of her tongue, Mikoto turned to let Kuroko lead the way to the cafe.

---

Kazari and Ruiko, but especially Ruiko, were excitable as always. They gossiped endlessly, mostly about the new artist Ruiko was obsessed with, and Mikoto listened calmly. She was a bit tired from a particularly tedious session of ability training, and was enjoying the downtime, listlessly watching the pedestrians outside pass by the cafe windows.

"Shirai-san, I have to know your opinion, do you think this is cute or what?" Ruiko asked, sliding a magazine across the table towards Kuroko.

"Ahh, no Saten-san! Don't ask her! Shirai-san's immoral preferences will rub off on you!" Kazari cried jokingly. Well, half-jokingly. An angry Kuroko reached over to pinch Kazari's cheeks.

Mikoto's lazy mind was jolted awake by a flash of black, spiky hair outside among the crowd. She leaned further towards the window, squinting her eyes for a closer search. "Could that be? ....Touma?"

For just a few seconds, she continued to scan the faces, until she found the culprit. It was a guy with a similar hairstyle and build, but definitely not that boy. She sighed and leaned back in her seat. "I haven't seen him in a while. What would I say to him anyway, though?" A scowl played out along her lips. "He's always such a jerk to be honest."

Her attention was brought back to the table by a gentle nudge at her side. She turned to be met with Kuroko holding a spoonful of ice cream just a few inches from her lips, smiling from ear to ear. "You didn't even have any, Onee-sama! Here, I saved some for you! Say 'ahhh'~ "

Mikoto blushed furiously and glared back at Kuroko. Then she peeked across the table from the corner of her eye. Ruiko was absorbed in her magazine and Kazari tensely watched them with baited breath. Normally Mikoto would've snapped back with a quick rejection by this point, but this time she just hesitated until the ice cream in Kuroko's spoon started to melt and a few drops drizzled down the sides. Kuroko moved her other hand underneath to catch the runoff and waited patiently. After gulping loudly, Mikoto timidly leaned over and took the contents of the spoon in her mouth. Kazari's eyes went as wide as saucers.

"Seeeee, it's good isn't it?" Kuroko purred while Mikoto licked her lips.

Mikoto's cheeks were still glowing crimson. "Um, yeah. It is good, Kuroko, thanks."

The pair turned back to face their friends, and Kazari reflexively shot her face down towards Ruiko's magazine, pretending she hadn't seen anything.

---

A black-haired boy sighed loudly as he read the time from his cell phone. "Already 4:46, there's no chance anymore. Such misfortune..."

Following some extra after-school makeup lessons, he had gone to the market to buy some stew meat for, who else, that endlessly-hungry freeloading nun. But the crowds on the streets were ridiculous today, as were the lines in the market, and now he was missing a baseball game he'd been looking forward to all week. Stuck at an intersection waiting on the crosswalk signal, he looked over his shoulder to see small cafe behind him. "Should've just gotten some takeout from there..." he mumbled to himself. As he scanned the windows, a familiar face caught his eye. "Biribiri?"

That middleschooler electric girl. She was eating in that cafe. What a small world, even in this huge city. Touma considered waving, as it seemed like Misaka looked right at him, but they didn't really know each other that well. He observed with mild disinterest as she turned her attention back to some girls who he assumed were friends of hers. Then he remembered the girl with the pinkish hair. "Hey, that's that brat who dropped me in the pool!" he said with a stomp of his foot. The windchill had been brutal that night, and he froze the whole way home in soaking wet clothes. Since the light had yet to change, he watched a little longer.

He gaped as the teleporter girl spoonfed something to Misaka, who blushed like they were on a date or something. "...woah, maybe they weren't joking about all that stuff..." he thought to himself. Stiffly, he swiveled around 180 degrees just as the light was changing. His thoughts quickly drifted back to the stew he was soon to be making, and whether or not Index would start biting him when he walked through the door...

---

As they were collecting themselves to leave the restaurant, Kuroko was rummaging through her school bag when a familiar metallic glint caught Kazari's eye. "Ah, Shirai-san, you're carrying the handcuffs today? I wondered why you were still wearing your armband. Is there a case you're working on? Konori-sempai didn't tell me!"

Kuroko grinned wickedly. Mikoto and Ruiko were at the front counter paying the bill, so it was just Kazari and her. Momentarily she considered lying, but now that she finally had her Onee-sama to herself, she was constantly fighting the temptation to let everyone around her know of their new relationship. Kuroko pulled the handcuffs out and clutched them to her chest, drooling a bit as she did so.

"Heh heh heh, no, there's no case today, Uiharu. I just wanted to, er, show these to Onee-sama," she replied ominously. Kazari looked confused. She wasn't sure why Kuroko had such a perverse expression on her face; she was usually pretty serious when it came to Judgment-related things at least. But then this was Kuroko, so she could only guess, and she didn't want her mind to go there. Kuroko slid the handcuffs back into her bag, chuckling to herself the whole time, before she ran over to Mikoto, shouting "Onee-saamaaa!" as usual. Mildly troubled, Kazari followed suit.

Ruiko and Mikoto were already outside by the time the other two caught up. This time Mikoto was leading the conversation, answering some of Ruiko's questions about Personal Reality. Together, the four of them walked slowly through the town, the three younger girls listening intently as Mikoto lectured.

---

"Where should we sit, everyone?" Ruiko asked, making a wide sweeping motion with her arm like a gameshow hostess. The tiny theatre was mostly empty, even though the movie was about to start any minute. The lights had already dimmed to the point that it was hard for their unadjusted eyes to see.

"I say the back row," suggested Kuroko, looking to Mikoto for approval as though hers was the only consensus that mattered.

"Okay, I'm fine with that," Mikoto agreed. Before long, the four were filing down the back row, settling into their seats as the curtain rose at the front of the room and the projector overhead flickered to life. Kuroko sat on the outside, with Mikoto of course to her right, followed by Kazari and lastly Ruiko.

Just a half hour in, Ruiko was sleeping, Kazari and Mikoto were totally absorbed, and Kuroko was growing antsy. She actually didn't particularly care for the same kind of fluffy tween romance films that Mikoto and Kazari adored. The only reason she started going to the movies with them in the first place was for the opportunity to sit next to her Onee-sama in a pitch dark room and fantasize about making out with her. Which is exactly what she was doing at that moment.

As subtly as she could, Kuroko used one foot to pry her shoe off of the other. She shifted closer to Mikoto and began sensually caressing her Onee-sama's leg with the ball of her socked foot. Kuroko carefully slid Mikoto's kneesock down with her toes and brushed long, slow strokes up and down the other girl's bare calf. Mikoto pretended not to notice.

Kuroko waited for a loud scene in the movie to make her next move. When one came, she was still holding her one-sided game of footsie. "Oh...nee...sa...ma..." she whispered in Mikoto's ear, "I'm sooooo horny~" The teleporter extended her tongue to give a brief lick along the bottom of Mikoto's earlobe, and finally managed to break her cool. Mikoto turned her head just barely to shoot an irritated look at her; however Kuroko was not deterred.

She ran a single finger slowly down Mikoto's forearm, until she was met with a tiny pop of static shock that made her retract it sharply. Kuroko giggled and leaned over to whisper into Mikoto's ear again. "So feisty, little Miko-chin!" she cooed in a mocking tone. Kuroko had been sure to reserve her new pet name for Mikoto as a secret weapon for times such as this, because she knew that her Onee-sama absolutely couldn't stand it. And just as expected, Mikoto's brow furrowed in annoyance. Kuroko peered slyly around Mikoto to check on Kazari. Her fellow Judgment officer didn't seem to be aware of their playing, or she was just consciously ignoring it. Either way, Kuroko took it as a green light to continue. Between them was an armrest, but the barrier was soon breached when Kuroko crept her hand slowly underneath it. The next thing Mikoto felt was the other girl's fingertips tickling her outer thigh. A shiver ran up Mikoto's spine, and Kuroko smiled at her Onee-sama's always-cute reactions. Still a little more maneuvering, and Kuroko had snaked her hand up Mikoto's skirt; she was now petting Mikoto over her shorts, careful yet to keep some distance away from her most sensitive area. "I hate these shorts of yours, Onee-sama," she whispered.

Mikoto's glare had faded to a puppy-eyed plead. Kuroko knew she was genuinely terrified about Kazari catching on. But Kuroko also knew that she was too close to breaking her Onee-sama completely to ever quit upping the ante on her stunts. Besides that, teasing Mikoto like this was almost as satisfying as sex. She forced her petite hand between Mikoto's clenched thighs and settled her palm over the area of her Onee-sama's pussy. "See, Onee-sama? This is less fun with your shorts in the way."

Mikoto shut her eyes and held a breath. Unable to pay attention to the movie any longer, she was now going to have to struggle to keep herself from getting aroused by the devil that was molesting her. She cursed herself for not expecting this. Any amount of calm she had managed to muster soon fell to the wayside, though, as she suddenly became aware that she was no longer wearing any shorts. Her whole body flinched when she felt one of Kuroko's slender fingers gliding along her slit, kept out only by the thin cotton of her panties.

Tenderly, Kuroko traced up and down her favorite crevice. Of course it was only a moment before she could start to feel a very slight wetness soaking through the material at her fingertip. "Oh, already, Onee-sama?" she giggled, not entirely into Mikoto's ear this time. That was enough.

Like a robot that had just been switched on Mikoto wrenched her junior's hand out of her skirt and sprang from her seat in a single fluid motion. Kazari just stared curiously as Mikoto chuckled awkwardly and brushed off her skirt. Then she dashed out of the theatre into the lobby. Kuroko smiled at the bewildered Kazari. "We're just going to go use the bathroom, we'll be right back okay?" she whispered before quietly removing herself from the theatre as well. Kazari watched Kuroko's back until it was out of sight, then looked the other direction at her roommate sleeping in the seat next to her. Who was she going to talk about the movie with later?

---

Kuroko found her Railgun in the ladies' room, splashing cold water in her face repeatedly. Before she approached, she tilted her head to check for the presence of legs in any of the bathroom stalls. "Seems like it's empty. Another lucky chance!" Kuroko smirked at her good fortune. A flustered Mikoto was having a staring contest with herself in the mirror, little droplets still falling from her the tips of her bangs. She almost jumped when some all-too-familiar hands cupped her breasts from behind.

"You're jumpy today, Onee-sama. What's wrong?" Kuroko chirped, massaging the soft little lumps in a circular motion beneath her palm. She anticipated a burst of electricity, but all she got was a small whimper escaping her Onee-sama's lips.

"Kuroko...ah, w-why are you doing all this...." whined Mikoto.

The twintail girl stayed silent and once again slid her hand down Mikoto's back and under her skirt. Mikoto could feel Kuroko's hand pause to squeeze her ass before forcing it's way between her thighs. Fingers bunched the damp fabric of her panties to the side and landed on the tight, moist flesh of her lower lips. Mikoto didn't even realize she was moaning Kuroko's name until a second later when her own echo in the large, tile room snapped her back to reality. With a blinding flash of electricity arcing across her whole body, she flung herself out of Kuroko's grip and swirled away, singeing Kuroko's hand in the process. Like a wolf, Kuroko pursued her, throwing one arm around Mikoto's head and embracing her in a hard kiss. The two stumbled back unsteadily until Mikoto's back hit the wall with a thump; Kuroko forcibly keeping them locked in an open-mouth kiss the whole time. Twining her tongue around Mikoto's, Kuroko interlocked their fingers together on both hands and pinned Mikoto's arms against the tile.

"Ahh, Onee-sama, you taste divine again today," Kuroko panted, breaking their kiss to lick along Mikoto's neck. Her voice had taken on an unnaturally husky tone, the way it always did when she was really aroused.

"Sh-shirai...give me a break, this is a public restroom..." Mikoto could only object in a small whimper.

Kuroko leaned her head in close to take in the scent of Mikoto's hair. Mikoto could hear her kouhai breathing deep next to her ear like a train groper. It was a sound Mikoto used to dread almost as much as the click of the Dorm Mistress' heels coming down the hall. Now she sort of appreciated the erotic quality of it....but not here.

She found her voice and complained a little louder this time. "Really, stop it Kuroko. What if somebody comes in? Besides, like I said, this is a public restroom...that's kind of, dirty..."

Kuroko was running her hands up and down across Mikoto's chest over her clothes; her eyes were closed and her face was looking lost in ecstasy. "Don't care. We have to do it, right here, Onee-sama. At least a little bit."

With that, the teleporter hoisted Mikoto's uniform vest up over her breasts, exposing the girl's plain white wireless bra. She was drooling from the corner of her mouth again.

Mikoto stamped her foot like a child throwing a tantrum, causing the lights to flicker overhead. "No! I said get off, Shirai! I'm not fucking playing!" Kuroko's eyes rolled back and she swooned in raw pleasure as about 900,000 volts of low-amperage electricity surged through her. She withstood it for about three seconds before she had to teleport to the other side of the room.

Never dissuaded, Kuroko grinned wildly, her chest heaving from breathlessness. "Onee-sama! You drive Kuroko crazy!" she called out as one of her ribbons came loose and floated to the floor. Half of her hair spilled down over her shoulder.

Mikoto pulled her top back down with a pout. "Kuroko is already crazy."

Just then, the door creaked open, and the two were joined by a familiar face. Kuroko greeted her with atypical exuberance. "Oh, hey, Saten-san."

"Hey..." Ruiko replied gently. Her voice was calm and perhaps even a little sheepish; Mikoto figured she must've just woken up.

"Uiharu sent me to check on you guys. She said she was worried about you, and you're missing the whole climax."

Kuroko opened her mouth to say something, but Mikoto shoved her out of the way and coolly strode past her. "You're right, Saten-san! Actually I was just leaving, but thanks for coming to check. You never know, we could've been ambushed by that invisible girl!" she laughed. Ruiko frowned a little bit at that.

"Kuroko..." she looked back over her shoulder to scold with a haughty voice, "fix your hair."

The door slowly eased shut while Kuroko stared down at her ribbon on the bathroom floor. Deciding it wasn't worth it to put a dirtied thing back into her hair, she undid the other one with a shrug. "Guess I'll just have to wear it down today." Before the mirror, Kuroko took a few minutes to finger-comb her locks out. Once she finished tidying herself, she noticed in the reflection Ruiko hanging around awkwardly, still in the same spot. Kuroko thought she looked preoccupied. "She must still be groggy."

"Ah," said Kuroko, realization dawning over her. "Are you waiting for me? I'm sorry, Saten-san."

The black-haired girl's eyes sparked back to life as though she were called back from the void. "Huh? Y-yeah..." She stuttered.

"This girl must not do well in the mornings," Kuroko noted to herself, regarding Ruiko with a mild curiosity. Actually, it seemed like she had something to say, but was hesitating. Wracking her brain for a second, Kuroko arrived at the most logical conclusion.

"Saten-san, you don't have to be embarrassed, you know. You need to borrow one, right?" she asked matter-of-factly. "I left my bag back in the theatre, but I don't mind going to grab it real quick..."

Ruiko drew back with a jolt and shook her hands in front of her face. "Whoa! Shirai-san, what are you saying?! That's not it!"

"Eeehhh, is that so...still just a little sleepy then or something?"

Ruiko nodded her head just as furiously. "Y-yeah! That's all!"

"Well, whatever. Let's go back, hm?" Kuroko dismissed the ordeal with a wave of her hand and turned to head out the door.

---

Beneath the pale amber glow of her room's artificial light, Mikoto strained her eyes to read a manga she had picked up on the way back. Flopping around in her bed, she tried to get a good angle where she could read clearly, but couldn't find a single comfortable position. Frustrated, she let out an exaggerated sigh. "You know, they expect us to study, but they won't spring for any decent lighting in these rooms. I'm going to need to wear glasses soon if I live here any longer."

Kuroko, who actually was studying, swiveled around in her chair. "Maybe. But Onee-sama would look cute in glasses. Besides," she continued, her voice dropping a pitch, "...I think it's very erotic: just the two of us, alone, in the dark..."

Mikoto groaned and smothered her head with her pillow. "That's so cheesy, Kuroko. I always know everything you're going to say," was her muffled reply. She heard Kuroko giggle from the other side of the room one instant, and then sensed a new weight on the side of the bed in the next instant. Kuroko was lovingly rubbing her back with one hand, and Mikoto stretched out like a cat to enjoy the sensation.

"How do you do that, Onee-sama? Are you synching up your electrical field with my brainwaves, or something of that sort?" The teleporter's voice grew excited. "You can do that, right? Let's do it, Onee-sama! I want to see inside your mind, and your memories...let us become one."

Mikoto tossed the pillow away and glared up at her. "No, I can't do that, sorry," she lied. "I just know what you're going to say because it's always something dirty."

"Onee-sama, really! I was just complementing you. How is that dirty?" Kuroko shrugged with mock-innocence, before Mikoto got up and slugged her in the back of the head.

"No, the second part, perv."

"Auuu~ You're so harsh, Onee-sama..." the teleporter whimpered. While she massaged her new wound, Mikoto gathered herself to sit Indian-style at the head of her bed. Kuroko mimicked and did the same at the foot of it. For a while, there was silence, and the two girls simply sat staring at each other under the tragically under-watted luminance of electric candlelight. Then Mikoto averted her eyes, a slight cloudiness falling over her expression out of nowhere.

"Hey...Kuroko....you know...sometimes I wonder..." she was stumbling through her words again, so Kuroko sensed this was serious, "...you're always saying you love me, talking about destiny and the red string of fate and all that crap...but, do you really love me?"

A tension that was starting build in Kuroko's heart immediately washed away. Her shoulders heaved, and she sighed. "Oh, is that all? Silly Onee-sama, of course I..." But she was cut off by the other girl who continued as if she hadn't heard.

"...I'm not even sure I really understand what that's supposed to be. Definitely, I have a lot of fun with you, Kuroko. It makes me really happy to be with you. But, uh, can a girl really love another girl? Isn't this kind of weird?" she pondered.

This was not the first time Mikoto had expressed this particular concern and it was eroding Kuroko's patience. Wasn't it a bit late in the game for her to still be thinking that way? And it always came up so randomly.

"Well, I love Onee-sama, and Onee-sama is who she is. I don't really see why it matters."

Mikoto was unconvinced. "Yeah, of course you don't understand what I'm talking about. I guess I'm just not used to all this like you are, Kuroko. I didn't think about 'love' or any of that other stuff before I met you...and it feels like everything's gotten so confusing, so fast, since you moved in." Mikoto stopped herself, realizing what she said, and jumped a little. "Ahhh, not that I haven't liked living with you! I didn't mean that. It's just, I'm a little confused. A lot of times it really feels like you only want me for...sex..." Mikoto blushed as she struggled to get the last part out.

At the other end of the bed, Kuroko was staring wide-eyed. She was hearing Mikoto's complaint but, at the same time, seeing her Onee-sama in this vulnerable position was still a delicacy for her. It roused her blood, and she felt only a little bad for thinking about Mikoto wearing that downcast expression while she laid naked underneath her...

"I guess this is a bad time to tell you that you look really, really cute right now, Onee-sama," the younger girl asserted, crawling towards her prey like a hungry lion. Her illusion was shattered when Mikoto shot her back one of the most poisonous glares that Kuroko had never wanted to see.

"Damnit, you're fucking impossible, Shirai! I'm being serious, and yet you never stop! I was right, wasn't I?"

"Eh?" was all Kuroko could manage before Mikoto shoved her back hard, toppling her over and eliciting the echo of a loud crack as the teleporter's head once again clashed with the hardwood floor. Lights swam underneath her eyelids, but the intense pain was hardly her top priority. Laying sprawled in a mess on the floor, Kuroko could hear the muffled sound of her Onee-sama weeping into her pillow. She had now managed to make Tokiwadai's acclaimed Level 5 Electromaster cry not just once, but twice.

"Onee-sama..."

In all the while she had been lusting for Misaka Mikoto; all the nights that she had laid awake and imagined what it would be like to date that girl and to be in a mutual love with her, she had never imagined the part of it where Mikoto got mad and pushed her away. Again. She was used to Mikoto beating on her, but not getting seriously upset. What was one supposed to do in this kind of situation? Now Kuroko almost felt like crying a bit herself.

"No," she smiled, letting her own unfiltered thoughts spill out into the open, "that's so silly, Onee-sama. You mean more to me than anything on the planet. I could never stand to see you go away from me, so I won't let this turn into a fight. Only sex? That's not even correct at all...I only want that because it's how I can be sure that I'm close to you. I want to be able to satisfy you on every level, Onee-sama, so you won't ever need anyone else; because that's how I feel about Onee-sama. Like I will never need another person for anything, as long as I can be around you. So I have to be this way from the start, because I need to show you that I want to be more than just friends with Onee-sama. I love you, so I want to have the closest connection I can with you."

The gentle sobbing had stopped and the room was quiet again. Mikoto lifted her head slightly off her pillow.

"...seriously?" she sniffled in a tiny voice.

There was another loud crack, but this time it was Kuroko slapping her hand to her face. "Yes, Onee-sama, seriously," the teleporter grumbled into her palm. Her voice quivered with her raw arousal, and her rational brain was working overtime to keep her at bay. "She's so cute. SO CUTE. Be cool Kuroko, don't mess this up again, don't mess this up again!"

"Yes. I'm serious, Onee-sama. I'll say it as many times as it takes until you believe me. I really am completely in love with you. And it's not only for your body, although you are very beautiful."

Mikoto said nothing but shimmied herself over to the side of the bed, obviously a gesture to invite Kuroko back up to sit with her again. Obediently, Kuroko did so.

"Thanks, Kuroko. It's just that, you really made me upset at the theatre today. I don't like that, Kuroko; it feels wrong to do stuff like that in public."

Kuroko shrugged her shoulders. She didn't really care herself. "Yeah, I guess...I apologize for making you upset, Onee-sama. Please forgive me. Someday I'll learn, really. I promise."

Mikoto flipped herself over onto her back and stared up into her friend's eyes. Her expression was much more peaceful now, so Kuroko's heart was at ease. "I don't think you'll ever learn, Kuroko." She mused, then returned to her side, away. "But...I love you too, you know."

In all her tossing around, Mikoto's pajama pants had been worked down a little low on her hips. Despite the romantic tone of the current atmosphere, Kuroko couldn't keep her eyes from drifting down, and settling on the colorful Gekota panties that were peeking out, just above the crack of her ass. Her top had hiked up a tiny bit too, revealing the beautifully angled curves on the small of her back. So inviting, Kuroko had to touch it...

In a split second, Mikoto had swiveled around and snatched her hand at the wrist.

"No?" asked Kuroko, disappointed.

Mikoto was blushing even harder than before. "...your hands are cold."

Kuroko had her back against her pillow and was probing the inside of Mikoto's cheeks with her tongue before the Railgun even noticed. After wrestling Mikoto's tongue with her own for a long moment, Kuroko pulled back just a few inches, leaving a thin trail of saliva to bridge the gap between their mouths.

"Just admit one thing to me, Onee-sama. You were turned on back then, at least a little bit. I know you were," she growled into Mikoto’s ear.

"No!" Mikoto furrowed her brow. Their lips were pressed together again, and they lay locked in a deep kiss for another while, Kuroko grinding her body sensually on top of her Onee-sama's throughout. Then, she pulled back again.

"Admit it," Kuroko threatened a second time.

"I really wasn't," scoffed Mikoto haughtily. Panting deep like a beast, Kuroko tore Mikoto's top open. One of the buttons popped off and skittered across the floor loudly; her little breasts came exposed suddenly but didn't jiggle even a bit.

"Onee-sama's small chest is so eloquent," Kuroko moaned, burying her face in Mikoto's tits and drooling everywhere while she moved back and forth, licking across all of them indiscriminately. "I know I tease you about it, but I love it so much..."

"Wh-what?! And fuck you, these are my favorite pajamas!" Mikoto protested. A finger at her lips stopped her.

"Maa, maa~ Don't get upset, Onee-sama. I'll buy you some new ones, okay? Uiharu told me a while back there were some at the mall that you had your eye on..." As Kuroko continued to talk, Mikoto noticed that she had teleported away and her voice was now coming from the other end of the room. She craned her head back for an upside-down view of Kuroko rummaging through her school bag. Apparently she found what she was looking for, and Mikoto exhaled sharply as a sudden weight on her chest knocked the wind out of her. Kuroko was straddling her waist with something metallic in her hands. "Look, Onee-sama! I brought us a new toy," she beamed.

Mikoto smirked when she recognized what Kuroko was holding. "Handcuffs, huh? And what do you plan on doing with those?"

Kuroko leaned back, her eyes closed, lost in her own fantasies. "Heh heh heh, be a good girl and roll over now Onee-sama, and I'll show you. I'm with Judgment! He he he...." While the twintail girl was apparently amusing herself, Mikoto gingerly slipped the handcuffs out of her hands. She pushed Kuroko off of her, more gently this time, and gave the confused-looking girl a kiss on the forehead.

"No," she cooed. Quite deftly, Mikoto managed to cuff Kuroko's hands behind her back while she did so. "You've been mean to me all day, so you can be under arrest tonight, you little brat. And you better not teleport, that's cheating. You'll be in trouble if you do."

Kuroko was eagerly anticipating Mikoto's performance while the Railgun gently and carefully undressed her. Her Onee-sama started with her pajama bottoms, then slid off her panties, and finished by letting down her twintails for her. She opened Kuroko's top, but of course, she had forgotten that Kuroko was already handcuffed, so there was no way to get it all the way off. Once she had exposed Kuroko's almost boyish upper body though, she leaned in to take one of the nipples in her mouth. Barring the occasional exceptions, Mikoto was generally somewhat tame with sexual technique; all she did now was lap at the little nub weakly with her tongue like a nervous kitten. Kuroko was never disappointed though. Her Onee-sama's very slight way of suckling on her was incredibly erotic, if only because it was Mikoto doing it to her.

Mikoto had was very erratic too though, and Kuroko soon found out that tonight was going to be one of the exceptions. She stopped rather suddenly and got up from the bed, while Kuroko, her lust building, followed her movements with large, doey eyes. What she got was another sudden web of white-hot electricity settling over her body and coursing through her skin and nerves, making her writhe. "AH! Onee-sama's love whip~" she shouted with glee. Over the loud crackling roaring in her ears, the teleporter heard Mikoto laughing.

"Keep your voice down, nympho. You really love it, but how long can you take it for? Have we ever timed?"

Very, very carefully, Mikoto upped the amperage of her current by a tiny fraction and watched with a grin while Kuroko thrashed around like a fish out of water. She looked even more pathetic doing it with her hands bound behind her back. "Still feeling good?" Mikoto giggled. It was kind of disturbing to her how much she enjoyed this, but she did.

Kuroko couldn't answer; the pain was blinding. When the surge finally stopped raging through her body some seconds later, she went slack, unable to make her muscles respond to her.

"So much...Onee-sama...too much..." Kuroko whimpered.

Her attacker just laughed again and sat back down next to her on the bed. "Aww, I thought you said you enjoyed it?" she mocked, stroking the helpless girl's hair. "Don't worry, I've been through so many tests, I know exactly what all the right limits are. I would never hurt you, you know that Kuroko. Well, not too bad, anyway." Of course Kuroko knew that. She nuzzled her cheek against her Onee-sama's thigh. It took a lot of effort just to move her neck.

Leaving Kuroko to recuperate herself, she got up and began rifling through the stuff on her desk. Two plastic clips, the kind any student might have around for assignments that were too thick for a stapler, had been lingering in her mind. She found them easily and bent them back for a minute, trying to stress the metal in the spring so it wouldn't clamp quite so hard. "I'm so bad...you've ruined me, Shirai," thought Mikoto to herself, recalling a trick from an animated lesbian porno that Kuroko had forced her to watch a few nights ago.

"Can you feel yourself yet, Shirai?" Mikoto called out, returning to the bed. Kuroko nodded a silent "yes".

"Let's test then," said the Railgun, climbing back atop the younger girl like a spider and moving straight in to nibble on the sweet, slightly sweaty flesh at the side of her neck. Mikoto sucked and bit so hard that Kuroko was squirming underneath her, and wondering what kind of miracle had happened to once again bring out this rare aggressive side in her Onee-sama. When Kuroko was just beginning to ask herself if Mikoto had drawn blood yet, she finally backed away. Capillaries had burst and deep purple pooled below the skin; she had created a perfectly nasty love-bite.

"There's a present for you, Shirai. You can wear that around for a few days, since you wanna be mine so badly," she teased.

Meanwhile, Mikoto had taken Kuroko's nipples in between her finger and was flicking and pulling them equally ruthlessly, until the little mounds on her chest begin to swell up with arousal, and the normally alabaster skin of her non-existent cleavage flushed a faint tinge of rose. Once the tiny nubs on her kouhai's tits had gotten fully stiff, Mikoto gave each one a brief lick, whetting them generously with her saliva. Then she brought out the clips.

Kuroko grit her teeth and tried not to yelp out loud when she felt the maddening sensation of hard plastic clamping down on her most sensitive flesh. Her mind screamed at her to take them off, but her hands were bound tight underneath her, and all of her Onee-sama's weight was on her; there was nothing she could do. The back-to-back sensations moved her closer towards the border of pain and ecstasy; this, combined with the look of wicked delight on Mikoto's face as she loomed over her, set Kuroko's whole body on fire. She could feel her own love juices overflowing from between her thighs almost instantaneously.

"Ah, Onee-sama, is so wild tonight~" the teleporter managed to gasp. To Kuroko's surprise, that apparently threw off Mikoto's cool, predatory guise for a second.

"Well, sheesh, I've gotta calm you down somehow..." Mikoto mumbled to herself, looking slightly embarrassed. "I'm worried you're going to rape me in the street some day. I mean, this is how you want it to be, right?"

Kuroko almost felt like laughing...this was definitely her Onee-sama alright. But the unbearable pressure on her tits, the soreness of her aching wrists and neck, and the wetness gathering between her legs all made her too impatient to Mikoto to be playing around.

"Yes, Onee-sama, I love it," she moaned, "please, do more of whatever you want to me!" To emphasize, she raised her hips and opened her thighs suggestively.

Soon Mikoto had her head buried between the teleporter's legs, and was roaming her tongue all over the girl's folds, vigorously lapping up all of Kuroko's luscious fluids. By now she had learned a little technique, so she stopped to gently kiss up and down Kuroko's inner thigh, slowly working her way back to the more important spot. Her lips touched in a light kiss against the very top of the other girl's slit, which Mikoto then separated with her tongue. Kuroko sighed out "Onee-sama, Onee-sama!" over and over in the background, and her thighs pressed against Mikoto's ears, dampening the sound.

By the time Mikoto had worked her way to just to skirting her tongue around the younger girl's clit, Kuroko was already at her limit. Mikoto held down Kuroko's legs while her little body shivered briefly in orgasm, but kept on strong with her oral service. Soon Mikoto picked herself up and switched to fingering her roommate instead; sliding in first two, then three fingers up to the knuckle. Kuroko's forehead was dotted with sweat.

"Oh...Onee-sama...more?" she panted between breaths.

"Of course. I said this was payback, right?"

Mikoto curved her fingers in and caressed the hot, spongy inner walls lovingly, while simultaneously amusing herself with watching the ridiculous faces Kuroko made. She removed one of the clips on Kuroko's tits, and licked circles around the slightly puffy areola, before taking the little pebble at the center in her teeth and nibbling on it much more intensely than before. A muted thumping echoed through the room while Kuroko banged her head against the mattress in frustration.

"Shhhh..." whispered the Mikoto, segueing from a hush into a momentary kiss. "Don't go waking everyone up, Shirai."

Kuroko wanted so bad to throw her arms around her Onee-sama and hold her while she neared her second orgasm, but she couldn't. So instead, she just pleaded with her eyes as Mikoto found just the right angle and begin to masturbate her furiously. Once she worked out an intense rhythm, the Railgun maneuvered herself to gently suck on Kuroko's swollen clit without her fingers breaking their stride. Kuroko was failing to restrain herself under the onslaught of the most intense sexual attention Mikoto had given her yet; her mind boiled over and she resumed her chorus of "Onee-sama, Onee-sama, Onee-sama!" over and over again...

Until, everything stopped. Right in the middle of a surefire buildup to another climax, she felt Mikoto pull herself away. Kuroko opened her eyes, and there was her Onee-sama indeed, perched over her, watching her face intently...

She rubbed her thighs together anxiously, trying to keep up her nearly-peaked pleasure. Flustered, she could only ask, "Wha? Onee-sama?"

Mikoto just gave her a frisky grin in response and idly looped her finger in figure-eights around Kuroko's bellybutton. For the first time ever, Kuroko almost, very vaguely felt a tiny ember of anger towards Misaka Mikoto. "H-hey, why'd you stop?" she groaned with distress in her eyes.

"I'm punishing you! I thought I already told you that," lilted Mikoto.

The teleporter's expression was indecipherable. She battled with the urge to teleport out of her restraints and finish herself, but her rational brain demanded that she not disobey Mikoto's orders.

"Please....Mikoto-Onee-sama...please give me more...don't leave me like this," Kuroko begged as sweetly as she could muster. She could feel her clit still throbbing; a network of nerves all through her were still burning up.

Mikoto stretched herself out and took Kuroko's mosquito-bite tits in her hands, massaging them deeply under her open palms. "It's your fault, you know. That I enjoy doing stuff like this to you. So beg me harder, Shirai."

"Oh, Onee-sama! Come on...pretty please...don't torture me anymore..." Kuroko was exasperated enough that she was whining and laughing simultaneously.

Gently, Mikoto laid her hand flat over the top of Kuroko's spread pussy, the heel of her palm applying a pressure down on the girl's hard clit. "You really can't do any better than that? At least apologize to me for earlier. Say that you're a bitch," she insisted.

Kuroko was already cheating and thrusting her hips up in little bursts to stimulate herself. "I'm sorry, Onee-sama. I'm a bitch," the teleporter murmured distractedly.

Mikoto placed her other hand on top of the first, increasing the pressure. The tips of her fingers penetrated Kuroko's pussy while the teleporter ground herself into them. "Good. Now, say you're MY bitch, Shirai," commanded Mikoto. She could feel the energy building in her roommate almost as though it were an extension of herself. Laid out before her, was Kuroko's petite, naked body; her unblemished and gorgeously pale skin dotted with beads of sweat, her unbound hair pooling around her face, bangs matted to her forehead, expression contorted in pleasure...The sight drove Mikoto to a fever herself. Seeing Kuroko this way because of her satisfied Mikoto as well. It was a delicious and new drug.

"Ahhh...Kuroko is your bitch, Onee-sama! Forever and ever~" gasped Kuroko, her eyes growing clouded and distant. Tension overtook her body as her back arched straight up, her pussy contracting on Mikoto's fingers in a deep orgasm.

Kuroko's hips slowly stopped moving and Mikoto separated herself from the girl. "Thaaat's right, Kuroko. That's right," Mikoto purred. She felt suddenly worn out herself, and she wasn't even the one that had just came twice.

Figuring she could relax now, Mikoto let herself go slack and lay atop her motionless roommate. Tranquility washed over her in large waves; and she let herself be still and just listen to Kuroko breathing underneath her. Resting there together with her, feeling Kuroko's chest rise and fall against hers, in time...was an emotion of warmth, like what she imagined a kitten experienced when huddling with its brothers and sisters. Her thoughts drifted away, and Mikoto smiled to herself. It felt good to lay close to another person.

Kuroko was always there trying to protect her, helping her, keeping her company, every step of her way since they'd met. She'd loved her so much, that Kuroko had torn down every last wall between them, and now as a result, they were able to share nights like this. In retrospect, she felt incredibly silly about getting so upset before.

"Of course, Kuroko. This has to be love."

Outside, rain started to fall. The soothing tap of droplets against the windowpane almost lulled Mikoto to sleep, but a gentle whisper from next to her ear roused her.

"Onee-sama, Kuroko loves to lay with you, but...please, can you get off of me? My arms are falling asleep," Kuroko requested politely.

With a jolt, Mikoto rolled off of her, snapped to her feet, and began to rummage through Kuroko's bag for the key to the handcuffs. "Oh jeez, sorry Kuroko! And I've been laying there crushing you this whole time, I bet they're totally numb by now!"

By the time she turned back, Kuroko was already sitting up in bed, freed of her restraints via teleportation and rubbing some horrible-looking red mark on her left wrist. There was a matching bruise on her right wrist too, and between them and the hickey on her neck, Mikoto's poor little kouhai appeared as though she'd just been returned from a kidnapping.

"Yeah...you look pretty messed up there, Kuroko. Sorry about all that too," said Mikoto.

Kuroko beamed a lazy grin in response. "There's no need to apologize afterwards, Onee-sama. I don't really mind."

Even so, Mikoto produced a small tube of aloe-based lotion from her desk and, taking Kuroko's forearm in her hands, massaged a dab of it into the girl's tenderized flesh.

"Are you still concerned about those things we were talking about earlier, Onee-sama?" Kuroko asked quietly.

"Umm, no, not really. I'm not sure what I was getting all emotional about."

"Oh. That's good then. So anyway, wanna stay up all night watching porn again?" the younger girl laughed.

"Definitely not. We need to go to sleep, it's late. How can you still be thinking about perverted stuff after all that, anyway?" Mikoto made a stern face and gave Kuroko a playful smack on one of her hurt wrists. "I never really knew the extent of your damage, Kuroko. If only I could go back in time and save you from becoming such a pervert. I would've steered you right if I were your mentor when you were younger, instead of Konori-sempai," proclaimed Mikoto.

Kuroko stretched out of the bed and got herself comfortable. "That wouldn't really be as much fun. It's pretty much a case of the pot calling the kettle black at this point, though, Onee-sama. I know your true colors."

She spoke the next part under her breath. "...I always knew, to be honest."

Following her example, Mikoto retrieved a pillow from her bed then returned to lay down next to Kuroko. After a second, she got back up again to turn out the light. Once her Onee-sama had settled in for good, Kuroko wrapped her arms around her, spooning the taller girl from behind, and quickly fell asleep. Mikoto laid awake a few minutes longer. She thought about Kuroko holding her, and how not that long ago, she would've flipped out and gotten upset if she'd woken up to find Kuroko in her bed like this. Now she was sleeping in Kuroko's bed of her own choice.

She snorted at the irony of it. Then she closed her eyes. It actually felt very secure.

---

More to come~