KuroMiko

Part 3: Mikoto Parties Hard
now with 78% more sex


Even with a tantalizing assortment of snacks spread out before her, the starving Railgun of Tokiwadai couldn't enjoy herself. She kept tensing up as if she were a rabbit prepping to flee a predator. The reason, as usual, was that level 0 known as Saten Ruiko. Saten had a habit of going around prying into whatever she could find like a ferret. "If she had an esper ability, she'd make a great detective..." Mikoto had often thought. Today though, Saten's insatiable curiosity was keeping Mikoto on the razor's edge, because this time there were actually a few objects in their dorm that she couldn't risk being exposed.

It was then that the ferret-girl smoothed out her skirt and bent over by the head of Mikoto's bed. The owner of the bed watched like a hawk from the corner of her eye, and sprang a few inches off of her seat when Saten extended her arm towards a small pile of junk underneath it's frame. "Eh, eh, Saten-san! You've gotta try this flavor, these raspberry cookies are insanely good!" she blurted awkwardly.

Saten froze and turned her head with a look of disinterested confusion. "But, I'm the one who brought those for you to try, Misaka-san..."

Uiharu, sitting across the snack table from Mikoto, understood the idea of privacy and forced a polite laugh. "Come here and let me fix your ribbon Saten-chan. It's crooked again." she smiled and patted the area next to her on Kuroko's mattress.

"Mmmmm...is it?" Saten surrendered her investigation and plopped down next to Uiharu while Mikoto heaved a sigh of relief.

"So what are you two doing for the weekend?" Mikoto prompted, now fully able to focus on filling herself with delicious snacks.

"I'm gonna raid the pachinko parlors all day and night! The invigoration of sending those balls tumbling by the dozens through a gauntlet of obstacles makes my blood boil! Uiharu's coming with me, aren't you Uiharu!" boasted the fiery non-esper.

Uiharu looked pale. "Ah, are you a middleaged housewife now, Saten-chan? How are you managing to sneak into those places away? We're still in middle school..."

"Nevermind that! It's super fun, you'll love it. You're coming." Saten concluded forcefully. She smiled at Mikoto. "Want to come too, Misaka-san?"

Mikoto frowned. Tokiwadai's number one ace, hanging out in some trashy gambling place? As politely as she could, she replied, "I have a lot of training to do, I'm sorry. Maybe some other time..."

Saten puffed out her cheeks in protest.

Just then, a flailing mass of pink twintails grabbed everyone's attention as Mikoto's teleporting roommate materialized in the room and gently tapped down on the floor. "Oh, hello Shirai-san!" chirped Uiharu.

"Good afternoon Uiharu, Saten. And..." Kuroko threw down her bag and pounced into Mikoto's lap. "I'm home, ONEE-SAMA!" she squealed, puckering up and launching a kiss right on Mikoto's lips. Of course, it was intercepted by Mikoto's palm. "Maaa! Maa! Onee-sama is so mean!" she whined, her face still flattened against Mikoto's hand.

With a stern expression Mikoto picked up her roommate and shoved her over so she sat next to her on the bed properly. But Kuroko insisted, leaning in to wrap a lock of Mikoto's hair around her finger and twirl it flirtatiously. Uiharu's face was flushed a brilliant red. Saten reached for some juice as though nothing were unusual.

"W-w-well, we're all here! I guess we can go see that movie now!" Uiharu exclaimed. The two non-Tokiwadai girls began to get up from Kuroko's bed and gather their things. "We've probably got to leave now if we want to catch the 4:30 one."

While Uiharu and Saten weren't looking, Kuroko ran a finger up Mikoto's spine and whispered into her ear. "Mmmmm, I hope there's a sex scene..." she cooed, managing to slip in a quick bite on Mikoto's earlobe. Mikoto blushed and jammed her elbow into her junior's ribs.

---

Arriving back in front of the entrance to the Tokiwadai dorms, the four girls said their goodbyes and split up for the night. Illuminated under a streetlight, Kuroko waved her friends off happily until they turned a corner and passed out of view. Then she swung around to find her Onee-sama already 20 feet ahead of her, walking towards the inner courtyard without a care in the world. "Gah!"

She teleported in line next to Mikoto and quickly matched her stride, coiling her arm around Mikoto's as they walked. Kuroko monitored her Onee-sama's expression through the side of her vision as she slowly tried to interlock her hand with Mikoto's. For a moment, Mikoto just clenched her teeth and bared the pleasant warmth of her junior's childlike hand nestled in hers. Then she heard the distant voices of some girls echoing from across the dorms, and aggressively tossed Kuroko's arm away. The teleporter frowned and plodded to a stop.

Mikoto continued for a few paces without her, then stopped as well. "Arrggh!" She tussled her own hair with both hands in frustration. In a burst she seized Kuroko's hand again and dashed off into a dark corner of the courtyard behind a tree, dragging the stunned Kuroko with her. Panting, she flung Kuroko against the tree and leaned over her, trapping the girl between her outstretched arms and the rough bark of the trunk. Mikoto's breathing evened out while Kuroko patiently waited for whatever she was going to do next. In her mind, the possibilities all seemed positive.

"Kuroko..." Mikoto trailed off with a pained expression. She averted her eyes, preparing to say something that she didn't really want to. "You can't do that kind of stuff! Not here. Listen, I..." Kuroko cocked her head innocently, making Mikoto furrow her brow even more deeply and stumble on her words. "About all this...We're not...I mean...I l-li-like you a lot, Kuroko, but..."

Kuroko interrupted in a confident whisper. "And I love you, Onee-sama." She stared directly at Mikoto's eyes, though Mikoto would not return the gaze.

The older girl tottered back a bit. She buried her face in her palm. "Ah, man...Kuroko, why don't you get it! It's like this...I mean, I can't be a...can't be a...oh god...Shirai..."

Mikto's stammering was past the point of recovery so Kuroko grinned and took the lead. She knew her Onee-sama like the back of her hand and was getting extremely skilled at breaking down her defenses as well.
She gently placed her hand on Mikoto's chest, just above the crevice of her breasts. With her other palm she clasped Mikoto's cheek and guided her head up until their eyes locked.

The normally alight and determined eyes that had always roused Kuroko's admiration were not to be seen. Instead her Onee-sama's pupils were glassy and distant; her stare akin to that of a deer caught in a pair of headlights. It was a genuine mental paralysis that Kuroko had seen seize her friend more than once since that night. As though a leftward force and a rightward force were grappling in Mikoto's head and causing a mental deadlock she couldn't break past. Despite how much Kuroko wanted her Onee-sama to stop resisting and just love her completely, some more wicked part of her found it deliciously cute that Mikoto's mind still rebelled even though her body had long succumbed. The teleporter softly kissed Mikoto on the cheek, and then, after a brief pause, on the lips. She felt her Onee-sama's hand at her shoulder, poised to push her off, but it never did. Even as the both of them heard a pair of their fellow Tokiwadai students walking by a couple paces on the other side of the tree, Kuroko refused to back off. She held Mikoto's lips against her own commandingly until the chatty voices of the girls had past.

Mikoto's heart calmed a bit when she pulled back to be met with the sweetest, most compassionate expression dawning on her friend's face. "I'm sorry Onee-sama. I 'get it'. I will try to restrain myself a little more from now on, I promise. But you mustn't concern yourself with trifling things. I'm just having fun with you, Onee-sama," purred the twintail girl. "Because I like you."

Mikoto pulled herself free from Kuroko's touch, to her junior's dismay, but kept a slight smile this time. Under the twilight, the two stood quietly and Kuroko began to gaze into the dazzling city lights in the distance. The occasional laughs and yells of girls having get-togethers echoed from the dorms. Finally, Kuroko said, "Come now Onee-sama, it's a Friday night. It's also rather early yet. Let's get back and do something fun."

Mikoto straightened up and pushed her bangs out of her face. "Yeah, right. Let's get back, Kuroko. It's a little chilly out here anyway."

The two set off, Kuroko careful to keep a few steps between them this time. She lagged just a little behind out of Mikoto's view and chuckled to herself, a wicked smirk gliding over her lips. The type of fun she had in mind, of course, need not be explained.

---

Mikoto sighed as her roommate handed her a glass filled with a bubbly clear liquid. "You're such a horrible influence, Kuroko. Really. This is unbelievable."

With a shrug Kuroko took a sip of her own cup. "This is the kind of stuff real ladies do, Onee-sama. It's common in France to start tasting wine at a very young age, you know."

"Oh, I'm sure," thought Mikoto, staring apprehensively into the liquid as she swirled the glass in her hand.

"It has the distinct flavor of...hmmm...peaches, maybe?" Kuroko mused happily.

"And your friend Saten-chan! Do you know she goes to pachinko parlors?! Who are these delinquents I'm hanging out with!" Mikoto grieved.

"...I'm a good girl..." she whined again in a small voice.

Kuroko had soon finished her glass, and being so small in stature, her cheeks were rosy already. She teleported herself next to her Onee-sama on the bed. "Hehehehe, let's do it this way then. I'll help you drink it, Onee-shama." She stole Mikoto's glass, emptied about half of it into her mouth, and roughly twined the fingers of her free hand into Mikoto's hair, yanking her head forward into a kiss. She pried Mikoto's lips open with her tongue, and once a pathway was opened between their mouths, she sent all the alcohol flowing down Mikoto's throat. She didn't stop until she heard Mikoto swallow all of it.

"mmmmhgh!" Mikoto flailed around until Kuroko released her, and sat grimacing with her eyes clenched shut. "It burns!" she coughed.

"WOW, are you serious?!" Kuroko laughed delightedly. "Onee-sama is so innocent! Oh, Kuroko is so lucky, to have been blessed with such a pure and divine princess for her partner!"

Mikoto grabbed her glass back out of Kuroko's hand. "Partner? Don't use words like that Kuroko, somehow it sounds weird when you say it." She gazed at the glass again for a second, then steeled herself and downed the rest of it's contents.

"Oh yes, of course, Onee-sama." Kuroko giggled patronizingly. With just a single glass of champagne, her perpetually horny mind was starting to kick into a furious overdrive. She knew it was best to take it kind of slow with Onee-sama though. "How do you like the champagne?"

"Eh, well it does taste pretty good if you can get used to it. You have pretty good preferences, Kuroko. Uh, in some areas at least."

Kuroko was busy pouring both of them another glass. She tried to keep the conversation chugging along, even though her mind was more focused on the certain items hidden amidst the clothes and junk under Mikoto's bed. "It's imported from Rome. Only the best for my Onee-sama."

Mikoto was impressed. "Isn't everything you have imported from somewhere? How do you get all this fancy stuff? The Shirai family must be doing very well."

"Yes, you could say that we are not a modest clan. Remember though, I do get some stipends from working for Judgment." Kuroko turned and handed Mikoto her re-filled glass.

Mikoto didn't hesitate to begin sipping this time. After a minute or two of quiet drinking she said, a little shakily, "No, wait, Kuroko. The real question is, HOW do you get this stuff? How did you get it in here, and who delivers champagne to a middle school?"

As she brought the glass to her lips for the final chug, Mikoto accidentally let a little of the liquid dribble down onto the white blouse of her school uniform. Kuroko's eye followed the transparent line of the wet fabric, licking her lips at the thought of the firm, palm-sized breasts just out of her reach. She gathered up both of the empty glasses and placed them carefully on the table.

"I'm sorry Onee-sama, but that's a boring question."

The next instant, Mikoto was staring at thin air. Where Kuroko had been sitting was nothing but the crumpled uniform her friend had been wearing. Then she felt the gentle pressure of Kuroko's bare tits pressed against her back. "Isn't that a cool trick, Onee-sama?" Like a snake, her hand slithered around Mikoto's waist. She enveloped Mikoto's hand with her own and guided it behind her back, pressing Mikoto's fingertips against the exquisite lace panties covering her slit. Mikoto could feel the warmth emanating from it. Kuroko guided Mikoto's hand in stroking her while she sweetly asked, "Did you wear yours too?"

Mikoto nodded. Yesterday after she had been admiring Kuroko's extensive collection of sexy underthings, Kuroko had dragged both of them out to "get Onee-sama something a little more mature." Mikoto sheepishly let her roommate pull her around a small lingerie shop on the outskirts of town, and at the end Kuroko bought both of them a matching pair of purple lace tanga panties. At Kuroko's insistence, they both wore them today. The other stipulation imposed was that Mikoto couldn't wear her trademark shorts just this once; thus she had carefully avoided any breezy areas or stairways all day long.

Pausing to rub Kuroko's mound for a second more, Mikoto then got up and clumsily freed herself from her skirt. Kuroko sighed with admiration at her Onee-sama's creamy thighs framed by such feminine underwear. Mikoto performed a little spin to show off. "Ta-da!"

The teleporter began absent-mindedly massaging her own breasts, yearning more and more for her Onee-sama each time she felt her tiny, hardened nipples roll beneath her palm. On unsteady legs, Mikoto bent over a bit to flaunt her ass to her audience. "oh...Onee-sama..." Kuroko gasped. She thought she might have felt a little trickle of blood from her nose. However, the tipsy Railgun quickly lost her balance and faceplanted onto the ground with her skirt tangled around her legs. She chuckled weakly; her thin, rounded buttox protruding into the air.

Mikoto's slightly delayed mind couldn't even register the movements of her roommate as the petite twintail leaped from the bed and kneeled behind the object of her lust. Even intoxicated, Kuroko's mind functioned like a natural predator when it came to sex. She didn't waste a second to pause and enjoy the feel of the panties she had made such a big deal about Mikoto wearing. With a swift jerk they joined the skirt pooling around Mikoto's knees, and the Railgun felt the slick wetness of Kuroko's tongue licking a wide trail up the cheek of her ass. When she finished there, Kuroko applied her tongue to the tiny nook at the small of Mikoto's back and licked there too, savoring the texture as slight goosebumps emerged on her skin. "Your body is so delicious Onee-sama. I could just taste you everywhere, all day long" moaned the twintail girl.
Well, except for tonight. She had different plans for tonight. But it was still a few minutes too early.

She let her Onee-sama fall slack and watched as Mikoto rolled onto her back and kicked the no-longer-necessary clothing aside. She was still wearing her dampened blouse and a bra, both of which Kuroko wrestled off of her with some difficulty. She grinned at the way Mikoto's movements were getting noticeably sluggish; the way she was panting softly through her mouth. There was no malice in Kuroko's thoughts however. It had been two weeks since the first night they had "experimented" with eachother. Though Mikoto still had a difficulty asking for anything or talking about it after the fact, Kuroko knew her Onee-sama loved this just as much as she did. Even just two nights later, Kuroko had been astonished at the way Mikoto didn't put up any resistance as she teleported into bed with her and began groping. She really thought it was cute the way that Mikoto sometimes tried to be the assertive partner, but in the end, it always ended up something like this.

Nibbling on the Railgun's left nipple and pinching the right with her saliva-moistened fingers, Kuroko drove her thigh between Mikoto's and forced her legs apart. She proceeded to rub it into Mikoto's snatch while she sucked particularly hard on the puffy tit between her lips. Her Onee-sama didn't so much as moan in response, but Kuroko could feel Mikoto's hand clasping the back of her head, holding her there. Kuroko assaulted the sensitive flesh with her mouth so violently that an overwhelmed Mikoto eventually had to buck herself free. Kuroko smiled and reached down to slide two fingers just barely inside Mikoto's lower lips. Her fingers came back drenched in Mikoto's fluids, which the teleporter licked clean before continuing.
"Stay there, Onee-sama. It's time for a real treat now."

Throwing the clothes and junk aside from under her roommate's bed, Kuroko fished out the object she had received in the mail just this morning. Mikoto hadn't been sure how to comment on it before she left for her afternoon classes; she'd merely frowned and instructed Kuroko to hide it among the stuff under her bed before their friends came over. Kuroko stroked the molded silicone dildo lustfully, remarking at the quality of the veined texture. She didn't want to go too overboard, so she'd ordered the 7" length. Her smile widened even more as she dug a little further among the stuff and retrieved a leather girdle with a hole at the crotch. This had been called a "harness" in the catalog. Kuroko had never seen such things in real life, only in porn, but she knew well enough how it worked. With this, she could fuck her Onee-sama as though she were a boy. "Not that I want to get Onee-sama thinking about boys too much... Ah, but I can't wait to see Onee-sama's cute face...biting her lip while she takes all this in..."

Kuroko deftly fastened the straps around her thighs as though she were a seasoned pro, affixing the false cock firmly in the center, before turning back towards her imminent prey. A squirming Mikoto lay spread out on the hardwood floor before her. As her fingers made lazy circles over the area around her clit, Mikoto stared apprehensively at her roommate's impressive new toy. Now, with her untied hair spilling down over her chest, leather straps across her hips, and a determined lust raging in her eyes, Mikoto thought that the real Kuroko was a lot more grown up than she'd imagined. It was this side of Kuroko she was starting to fall in love with.

Soon Kuroko had slithered on top of her and was pressing the dildo's broad tip against her entrance. Mikoto was getting nervous and almost felt irritated when Kuroko paused to take one of her Onee-sama's nipples in her mouth once again, tracing loops around it with her tongue. Then, without warning, Kuroko gripped Mikoto's shoulder hard and used the leverage to ram almost the full length into her at once. Mikoto grit her teeth and squeezed her assaulter's shoulder back in protest. There was not even a trace of restraint as Kuroko continued to pump her hips back and forth, quickly hitting her maximum depth over and over while Mikoto's face remained contorted in shock and a little pain. As far as Kuroko knew this was the biggest thing that had even been inside her Onee-sama. But she finally had the chance to fuck the girl of her dreams completely raw, and she had no intention of doing anything less.

Cutting through the silence was the rhythmic slap of Kuroko ramming into her partner mixed with Mikoto's tiny grunts as she struggled to endure her pounding. The teleporter was nearly orgasmic herself as she watched Mikoto's lips scrunch up, her eyes clouded and rolling back with pleasure. "And now, I'm the only one who's ever seen Onee-sama make this face...". Still fucking vigorously, Kuroko grabbed Mikoto's chin and forced her mouth open, then let a thin trail of saliva drip from her mouth to Mikoto's. Kuroko giggled in her usual superior tone after Mikoto drank it all up eagerly. "Maa, maa, Onee-sama's face is sooooo cute right now! Does it feel good? Tell me how it feels, Misaka-Onee-sama..."

Mikoto didn't reply, so Kuroko grabbed her hips and switched her rhytm into the most powerful, drawn-out strokes she could manage. Mikoto threw her head back, and an intoxicating feeling of power pushed Kuroko to tease her further.

"You're such a good girl, my sweet Miko-chan! Only Kuroko's obedient little bitch. I knew I was going to have you this way from day one! You belong to me, Mikoto," she growled, "and don't forget it!"

"Ah, Kuroko, you...you..." MIkoto panted out a retort but was losing herself as she approached orgasm. Kuroko continued her ramming mercilessly until she felt her Onee-sama's entire body tense up, shudder, and finally relax. At that she finally pulled out with a contented smirk. For her final humiliation, Kuroko detached the dildo and wiped it off across Mikoto's belly, smearing the girl's fluids all over herself. Exhaustedly she staggered to her feet, tossed her tools aside and fell into her bed, stretching like a sleepy cat before closing her eyes for some quick rest. After a few minutes, she heard Mikoto get up and start fumbling around with some things. To her delight the next thing she felt was her Onee-sama climbing in to bed with her, laying one hand over her waist and spooning against her from behind. Kuroko purred and turned her head to rub her cheek against Mikoto's lovingly.

"Now tell me, Shirai, " Mikoto whispered some seconds later, "what was all that about me being your property or whatever?"

"Eh heh heh, I just can't restrain mself with you Onee-sama. I apologize, I meant no disrespect." The younger girl rolled around to face her. Mikoto used to find it a burden, but at moments like this she was really touched by the idolitry in Kuroko's eyes. She was truthfully this strange little girl's whole world.

"But," Kuroko asked sweetly, "you are mine, aren't you Onee-sama?"

"..."

Mikoto decided to let her silence rattle Kuroko's heart for just a second, then she switched the subject. "So, I...I enjoyed our new toy...but I have to ask, why is there also a gigantic bottle that says 'water-based sexual lubricant' under my bed? What need could you possibly have for that, Kuroko? I wonder?"

"Ahhh," Kuroko stammered, rolling away from Mikoto this time. "Did I have something like that?"

Mikoto sighed. "What really scares me is that I can actually think of reasons why you would have that."

"My Onee-sama is becoming a woman."

"More like becoming a pervert, because of my sick pervert roomate."

Without further explaination, Mikoto slipped out from the bed and began fumbling with the discarded harness herself. Unlike her sexually-savy friend, Mikoto struggled with adjusting everything for two or three minutes, Kuroko watching with bated curiosity the entire time.

"Yay! Now it is my turn, Onee-sama?" Kuroko called in a sing-song voice, spreading her legs eagerly.

"You could say that. But first, we're going to have to loosen you up a bit."

Like a hawk Mikoto descended on the smaller girl, clasping her hand tightly over Kuroko's mouth. Her palm muffled the ensuing howl as she sent a long burst of current surging through Kuroko's whole body. The teleporter gripped the sheets wildly. "More?" Mikoto laughed. This time she slid her hand between Kuroko's thighs and set her finger just to the side of the girl's clit. Kuroko's eyes pleaded her, but she ignored them. Cautiously she allowed a barely-measurable arc of electricity to flow through the area around the tiny bump, but Kuroko squirmed as though it were the most raw, unbearable stimulation she'd experienced in her whole life. She kept it going until she noticed drops of sweat beading at Kuroko's brow, then finally let up. She felt the petite body of her friend go slack beneath her. "Feeling relaxed now, I'm sure. Okay, roll over." Mikoto motioned with her a wave of her finger, and Kuroko shifted to lie flat on her belly. Now that Kuroko wasn't looking, Mikoto reached for the clear bottle of liquid.

Tokiwadai's Railgun was a fiercely competitive girl who couldn't stand being one-upped, even in a situation such as this. Kuroko was getting a little too comfortable with her, and she intended to exact a suitable punishment. She couldn't really believe that she was going to do what she was thinking of, but then, recently she was surprising herself more and more.

She spilled some of the thick liquid into her hands and smeared it over the dildo protrouding from her crotch. Then she silently climbed on the bed, lifted Kuroko's ass up, and slicked more of the lube all around the little pink ring of Kuroko's anus. "...it's...cute..." she whispered unconsciously.

"eh...did I just say Kuroko's asshole was cute?" Mikoto frowned to herself.

Kuroko chuckled nervously while Mikoto aligned the tip of the dildo against her hole. Not that she hadn't accounted for this situation happening, but she had kinda of hoped she wouldn't be on this end of it. When it came down to it, she now felt a little apprehensive about that big thing going in her ass. "Heh heh, Onee-sama sure is hardcore..." she gulped.

Mikoto grinned in response, her head still feeling pleasantly light from the buzz of the alcohol. "Right? I figure a perv-girl like you would really enjoy this kind of thing, Kuroko. Just tell me if it hurts, okay?" she laughed.

The thick dildo forced it's way a little inside. Kuroko had just jammed it into her, but Mikoto figured that in this case she should at least be a little gentle. Slowly she slid her hips closer, getting deeper and deeper while Kuroko whimpered into her pillow. She gave a second or two for Kuroko's muscles to relax, then pulled the dildo out, only to begin slowly sliding it in again. Her hands gripped the cheeks of Kuroko's petite butt as her rhytm escalated. Mikoto was really enjoying herself.

"Hey, this is great, Kuroko! I can see why you got this stuff now! I could do this forever!"

Her hips were now slamming into Kuroko so hard that the teleporter's head was bobbing back and forth with every thrust. Kuroko just grit her teeth.

"Aww, usually you're moaning 'Onee-sama! Onee-sama!' by now. What's the matter Kuroko, you're not having fun?"

"N-no, Onee-sama, I-"

She was cut off by another one of Mikoto's violent full-body electric shocks.

"...Auuu~" she whined.

Just like Kuroko, Mikoto could lose herself in the sadsim easily. She cared a lot for Kuroko, sure, but it satisfied her to no end when she could get her back a little bit for the nonstop sexual harrasment she had to put up with since they became roommates. "Oh, sorry. You were saying?"

"O-Onee...sama...Kuroko loves getting fucked by you...even like this..."

"Well, of course I already knew that! But I guess since you're so loyal, I'll give you some reward too, Kuroko."

Maintaining her aggressive fucking, Mikoto reached one hand below to Kuroko's dripping pussy. She felt around until she again hit the younger girl's clit. "You liked this last time, right?"

Kuroko bit the pillow hard to keep from crying out as she felt Mikoto's current once more tingling her most sensitive spot. The dual sensation of her ass and clit both being ravaged made her insane. Mikoto even thought she saw tears brimming at her junior's eyes while she thrashed her head around. Grinning, she continued to pound away at Kuroko's ass.

"Waaaaaah~ Onee-sama, Onee-samaaa!"

Mikoto threw herself completely into the body below her, nibbling on the top of Kuroko's ear from behind. She stopped pumping, holding the dildo in place as deep in the little girl's tight ass as it would possibly go.
Kuroko rambled nonsense wildly as her stimulation built towards peak. "Onee-sama, you're my goddess! I love you, I love you, Onee-sama!"

Even though she couldn't truly feel inside of Kuroko, Mikoto sensed Kuroko's muscles tighten around the silicone cock and judged from the expression on her face that she orgasmed more than once. "Alright Shirai, I guess you've had enough for now," she concluded in a low, sultry voice. With one arm, Mikoto wiped the sweat from her forehead, gave Kuroko another solid pump for good measure, and withdrew from her.

---

Some time passed, and Mikoto stood up to stretch. "Ahhh, that was great Kuroko! Hey, do you have any training or Judgment work tomarrow?"

Kuroko was still frozen, bent over on the bed with her head buried in her pillow and her butt in the air. "...no, I have tomarrow free," she mumbled.

Mikoto was rolling her shoulders energetically. "Wanna stay up some more then?"

"...okay."

"Alright! Whatcha wanna do now? Maybe a little more of that champagne?"

Kuroko was slowly pulling herself up and reaching for a robe from under her bed. "...I think I'm going to take a shower, actually, Onee-sama."

"That's a great idea. Can you just teleport us there so we don't have to sneak through the dorm? I think it's past curfew now."

Kuroko closed her eyes and pretended to adjust a pair of glasses on her face, doing her best impression of the dorm mistress. "Now Misaka-san, you had better remember the rules! There is to be no usage of abilities within the dorm!!"

The response was a pillow hitting her in the face. "Just get your stuff." Mikoto giggled.

A moment later both of the girls were tiptoeing towards the door. With Kuroko pressed against her back, Mikoto reached for the handle of the door, and turned it painstakingly slowly so as to make as little noise as possible. As soon as the mechanism clicked and the door lost it's tension, it flew open and three Tokiwadai girls fell face-first into their room. One of the girl's hands caught a corner of Kuroko's bathrobe as she fumbled through the air, yanking it clean off. It fluttered slowly down and covered the pile of unwelcome guests like a blanket.

A stark-naked Kuroko squatted down by the girls. "Oh look Onee-sama, I guess we had an audience," she laughed.

The topmost intruder lifted up the robe and looked up at Mikoto sheepishly. She watched as the face of Tokiwadai's elite level 5 went from pale, to tomato red, then back to pale.

"EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEH?!"

As always, to be continued...