When people look at Karina, they see an innocent, baby-faced girl with the cute, fluffy cheeks and the sweetest puppy-eyes. What they are often surprised to discover is that Karina is ferociously competitive.

She has been since a child. Her room is covered in medals and awards from both school and her extracurriculars. She's used to being the top of her class, used to winning elections when she runs for student council, used to getting what she wants when she puts her mind to it. Karina is not the kind of girl who strays from a challenge.

Karina is a goddamn Slytherin beneath her Hufflepuff exterior.

At her very core, the girl is greedy and undeniably ambitious. So when Karina saw Winter-unnie's bulge through her dress that one night, and realized that she was the cause of it, it filled her with such desire. Even in her wildest fantasies, she never fathomed that she could have a chance with someone like Winter. Seeing even a smallest chance of winning the older woman's affections absolutely fills Karina to the brim with ridiculous confidence—though she really wants to be filled by something else of Winter-unnie's.

Karina has always believed that hard work is rewarded.

Fortune only favors the brave.

And fortune has not disappointed Karina thus far.

From her unfiltered soju-infused tongue to her courageous act of climbing onto Winter's lap last week, Karina has been rewarded in ways that she could never have even dreamed of. When she rubbed herself against Winter, Karina couldn't believe how powerful she felt when she sensed her unnie growing stiff under her. Winter's body yielded to her. She whimpered and moaned like she was at the mercy of Karina. By the end of the evening, the woman's eyes looked so…so…black with desire.

It was…enthralling.

But most importantly…Winter-unnie had kissed her.

It made Karina's stomach explode into butterflies and made her heart sing. She loved the feeling so much. She loved the feeling of being in Winter's arms so much when she hugged her and kissed her—craved her. Giselle was absolutely right. Nothing is hotter than when someone wants you.

Karina's always been a good student, but she can't concentrate in class these days. All she can think about is Winter.

As her teacher drones on about balancing chemical reactions, Karina smiles to herself while recalling the way that Winter-unnie had French kissed her and how the woman's hips had pumped upwards, grinding their privates together. It was so exciting. The memory of Winter's bulge right between her legs and against her clothed pussy is making Karina squirm in her seat. She's getting wet just thinking about it in the middle of class.

Giselle and Ning would shit themselves if Karina told her friends about her recent experiences. They probably wouldn't even believe that she had the ability to instigate such a thing.

But Karina doesn't really want to brag about this anyway. She likes being able to share this secret with Winter-unnie. Just something special for the two of them only.

Is this what being in love feels like?

Karina smiles to herself as she doodles hearts along the margin of her notebook. She's in such a good mood.

After all, it's Tuesday.

Before they settle down for dinner, Karina watches Hyunjin as the boy runs a lap around the backyard before returning to his babysitter.

"See?" the boy exclaims. "I'm the fastest in my class. I'm fast, right, noona?"

"Crazy! You were like a blur! I could hardly see you!"

Karina can't believe that children are willing to run laps—for fun—but she figures that if you disguise anything as a game, then kids are most likely to participate voluntarily. This kid has way too much energy tonight and Karina wants to make sure that Hyunjin burns through some of it, otherwise she's going to go crazy if she has to fight with him to put him to bed tonight.

"Show me again!" Karina requests, bubbling with fake excitement.

"Okay!" Hyunjin shouts before he takes off for another lap around the backyard.

Karina's always liked her babysitting job, but lately it's been a bit torturous. It didn't bother her as much before, but Karina only gets to see Winter-unnie for a small window of time on Tuesdays. Usually only for a bit when she first arrives at the woman's house, and then maybe an additional half an hour—or hour, if she's lucky—when Winter returns home at night. She really wishes she could be spending time with Winter-unnie rather than her son right now.

Waiting a whole week to see Winter for barely an hour is really, really wearing Karina's patience thin.

"Was I faster this time?" Hyunjin asks as he screeches to a halt in front of his babysitter.

A sudden realization hits Karina. She hums as she taps her finger on her chin. "Do you think we should time you? When I was your age, I could run around this backyard in thirty seconds. Bet you can't beat my record."

"Bet you I can!" Hyunjin counters.

Karina sets a timer on her phone and encourages the boy to sprint around the yard again. She most definitely does not remember running laps around Winter-unnie's backyard when she was a child, never mind being timed for it. So it's not exactly surprising when the boy returns within twenty-five seconds and beats Karina's random-number 'record.'

"Amazing!" Karina exclaims. Her smile widens as she asks, "Do you think you can do it even faster?"

Excited, the boy is already breathing hard, but he still eagerly nods as he spring-loads his little legs. "Time me, noona!"

Karina leisurely hits the start button on her phone as she watches Hyunjin sprint around for another lap.

That's right, little boy. Tire yourself out. I want you to sleep like a rock tonight.

Winter is a little loose around the time that she returns home, but even knowing that, Karina is still anxious when the clock rolls seven minutes past 9:00.

Karina goes to the bathroom to look herself over in the mirror. She smooths out her skirt, combs her fingers through her bangs, and reties her half-ponytail. After that, she decides to remove the red tie from her uniform and pops open one button on her white blouse—no wait, two. Two buttons looks a little sexier, right?

She looks a bit more casual like this without her blazer and tie, but it still looks like her uniform. This is how most of those 'schoolgirls' in those videos had dressed, so she thinks Winter-unnie will like this look a lot. Earlier in the evening, Karina's mother had asked the girl why she hadn't changed out of her uniform before going over to Winter's and Karina made up a silly excuse that she was too lazy to change out of her clothes. But really, she just wants to look good for her unnie.

By the time that the front door unlocks, Karina practically springs up from the couch to go greet the older woman.

"Hi, unnie."

"Hey," Winter greets. "Sorry, I'm a bit late. Everything okay?"

"Oh yeah, I put Hyunjin to bed at eight."

"Oh okay. Are you ready to head out then?" Winter asks, wondering if she should put her shoes back on.

Karina tries to suppress her smile as she shakes her head. Winter's face is free of any makeup and her hair is damp from her shower after volleyball. She's dressed in a loose pair of black sweatpants and a plain white t-shirt, yet she's just as pretty as when Karina saw the woman dressed up in her cocktail dress with full makeup. She walks a little closer and reaches out for Winter's hand before gently tugging on it.

"Can we watch some TV together for a bit first?"

Winter sucks in a sharp breath and Karina can see it. That hesitance. Why is someone as hot as Winter-unnie so shy?

"Karina…." she softly sighs.

"Please?" Karina asks, puffing up her cheeks cutely. "Just for a little bit?"

"…Is it that show of yours again?" Winter asks, looking a little tired.

"No," Karina giggles. "I promise, it's not bad." With a sigh, Winter sets her duffle bag onto the floor and Karina grins as the woman allows herself to be dragged over to the couch. Winter takes a seat and Karina unpauses her program. "See, it's a baking show. It's not bad."

"Oh…okay. Why do you want me to watch—h-hey!"

It's cute the way that Winter gasps as Karina takes a seat on the woman's lap. This is all that Karina has been waiting for. She just wants to be in her unnie's arms again. So she plucks Winter's limp arms up and folds them around her waist, making the woman hold her.

"Karina."

"Just for a little bit," Karina pleads, leaning back and nestling her head against Winter's. "The episode's not long."

She feels a hot puff of air against her neck as Winter sighs. "Five minutes, and then I'm driving you home."

Karina smiles and wriggles around a bit, trying to sink into Winter's embrace deeper. And not even twenty seconds later does Karina feel something moving against her ass. She glances over her shoulder and keeps her voice down as she whispers, "Unnie, are you getting…hard?"

"I-it just happens when you're moving like that," Winter stutters. Karina can feel the arms around her waist attempting to move her to the open side of the couch. "Come on," Winter says, "Y-you should go sit over there—"

"No. I don't want to," Karina stubbornly replies. With a jerk of her body, she centers herself back on Winter's lap once more.

She feels a tired sigh hit the back of neck. "I-I think I should take you home."

"Not yet," Karina defiantly replies. She glances over her shoulder. "Please? I've been waiting all week to see you. I missed you."

Something about Winter's body noticeably softens, like Karina's words had physically melted her. She feels Winter's head lean into the back of her neck and something about the intimacy makes Karina's heart ache so wonderfully.

"Okay," Winter eventually tells the girl, succumbing to her request.

Pleased, Karina grins from ear to ear and nestles into her unnie's embrace. Winter's always freshly showered when she comes back from her volleyball games. She smells so lovely and her body feels so nice to be pressed up against. Karina can't decide what she's more excited about feeling though: Winter's big tits pressed into her back or the woman's cock still continuing to grow harder and harder against her ass.

Karina's absolutely enamored by the way that her Winter-unnie's body is reacting to her. Thinking of all the videos that she had watched on Winter's computer that one evening, Karina casually takes the woman's hands off of her waist and guides them north, right onto her small breasts.

"H-hey…" Winter weakly protests.

On the TV, someone is kneading dough and Karina smirks as she mimics the action with her hands on top of Winter's. She gently squeezes, trying to encourage the older woman to grope her. But Winter continues to remain perfectly still, even though Karina can feel the undisputable arousal pushing up against her. Winter-unnie isn't pulling away though, so Karina tries a little harder. She swirls her hips against Winter's erection, hearing a tiny wheeze form behind her as she uses her ass to rub against the woman's cock.

"M-Karina."

"Doesn't it feel good for you too?" Karina questions, hearing her own voice thicken with arousal.

Karina softly gasps as Winter's hands unexpectedly squeeze on their own accord right afterwards. She wonders if her unnie can feel how wild her heart is beating as the older woman starts to fondle Karina's breasts through her blouse. It feels so…good.

"Do you…really touch yourself when you think about me?"

Winter's whispering, but Karina hears the question crystal clear. She turns her head over her shoulder and makes sure that her unnie can hear her as she replies, "All the time."

She hears a shaky breath in response. Karina smirks, but her mouth quickly morphs into an O as Winter suddenly squeezes the girl's breasts a little harder.

"You make me so wet," Karina mutters. She drags Winter's hands off of her chest and forces the woman's hands down her lean body.

"Karina…" Winter faintly groans, half chastising, half moaning. "Karina, we really shouldn't be doing this," she says, although her actions are contradictory as her hands settle under Karina's plaid skirt and rub along the inside of the girl's thighs—not quite where she wants to be rubbed.

"But I like it," Karina whines, hips rising in tandem with Winter's stroking fingers. "It feels…really good down there."

"I-it does?" Winter questions, panting into Karina's neck.

"Unnie," Karina softly moans. She continues to rock her hips back and forth, grinding her ass against Winter's erection. "Do you want to…touch me?"

Karina doesn't miss the way that Winter's fingers suddenly squeeze the inside of her thighs, like she's trying to plant her hands from drifting.

"M-Karina, I-I…"

The younger girl squirms in her spot, going crazy over the heat of Winter's palms so close to her throbbing sex. Karina's heart is going haywire in her chest. She wants it so much. Impatient with Winter's hesitance, she drags the older woman's hands between her legs.

"H-hey—"

"Touch me, please—ohh." Karina softly whines, surprised when Winter's fingers move on their own accord and press against Karina's sensitive clit.

"Oh god," Winter wheezes. She brushes her nose against Karina's pulse point. "I can feel how wet you are through your panties," she states while rubbing her fingers up and down the girl's clothed slit.

Karina feels her whole body blush. She feels embarrassed, but comforted at the same time when it sounds like Winter-unnie likes it so much. Karina gnaws on her lower lip, so excited and nervous all at once.

"D-do you want to feel how wet I really am?" she timidly asks, guiding Winter's right hand up the slope of her pelvis towards the waistband of her underwear.

Winter doesn't even reply this time. All Karina hears is a breathy little wheeze against her ear, which causes her to shiver. She spread her legs wider as Winter's fingertips touch the elastic of her panties.

With Karina's calculated efforts, she both hopes and assumes that Winter can't resist such an alluring invitation. And fortune does not disappoint Karina's bravery once more as she watches the woman's fingers slip past the elastic band. However, no amount of mental preparation Karina has done can prepare her for the feeling of when Winter finally slides her hand completely inside.

"Oooh~" Karina feels her eyes involuntarily roll back and flutter, surprised by the feeling of someone else's fingers against her bare, wet pussy for the first time.

"Jesus Christ," Winter whispers behind her. Karina bites her lip when she feels the heat of Winter's breath on her neck right before the woman leaves a soft kiss on the sensitive skin there. "Baby, why are you so wet?"

Oh fuck. Karina squirms in her seat on Winter's lap, so utterly horny and infatuated to hear her unnie call her something so endearing. She turns her head a bit, making sure Winter can hear her reply. "I-I'm always wet for you, unnie."

"God," Winter wheezes. Karina can feel the pressure of the woman's forehead leaned into the crook of her neck. "What're you doing to me?"

"Doing to you—?" Karina gasps as Winter's fingers start to glide through her slick folds. She's so wet. And Winter can now actually feel how wet she is.

Karina honestly wasn't sure what kind of reaction that she'd receive from her Winter-unnie this evening, but this is far better than anything she could have hoped for. Somewhere in the back of mind, she's worried about the potential of Hyunjin waking up and coming downstairs to find his mother and babysitter in such a compromising position, but she really doesn't care right now—not with Winter-unnie's fingers rubbing her pussy like this. Besides, the boy should be sleeping soundly after all of that running around and Karina would much prefer the risk than not experiencing this at all. With her head continually growing hazier with pleasure, Karina lifts her hips up a little bit, hooks her finger into the waistband of her panties, and pulls the fabric down one leg.

"Oh fuck," Winter curses under her breath, barely audible.

Softly panting, Karina tips her head back onto Winter's shoulder and kisses the woman at the awkward angle. "Unnie, p-please."

How can Winter possibly resist a girl on her lap, who's grinding against her erection, and with her legs spread wide open, begging to be fucked?

She doesn't.

"Is this what you want?" Winter asks, gently dipping the tip of her middle finger against the entrance of Karina's pussy.

Karina squirms, body so hot at the thought of her Winter-unnie touching her like this. "Y-yes," she gasps, rocking her hips down in an attempt to sink herself down onto that digit.

She gets exactly what she wants though. As soon as she gives permission, Winter is sliding her middle finger in. "Oh god, you're tight," Winter whispers. Using her free hand, she folds up the plaid pleats of the girl's skirt to get a better view before wrapping one arm around Karina's waist to keep her from rising up too high. Her other hand continues to slowly work its way in and out, gradually earning a little bit more wriggle room into the girl's virgin pussy.

"O-oh," Karina softly moans. Holy fuck. Why does this feel so much better when someone else is doing this? She reaches back and grasps onto the back of Winter's head, like she's trying to bring them together impossibly closer.

"Are you okay?" Winter whispers, still slowly pumping her finger in and out.

Karina feels so warm all over, but this makes her heart warmer than anything else. Her unnie's always been so sweet and kind. There's no one else that she'd rather be with like this. "Y-yeah. It f-feels good," Karina pants, having trouble speaking through her lust. She plants her feet on the edge of the couch and spreads her thighs open a little wider. "Pl-please."

Not only does Winter's hand feel so good, but the older woman starts to softly kiss and lick the junction of Karina's neck, adding to the increasing pleasure that's consuming the girl from head to toe. Once Winter is able to comfortably slide one finger in and out, she carefully adds a second finger into Karina, amplifying the satisfying pressure in the girl's pussy and stretching her out.

And once Winter is able to speed up the thrusts of her fingers a little, her palm also starts to rub against the girl's clit causing Karina's vision to truly spot with pleasure.

Oh fucking hell.

Karina furiously blushes at the wet clicking sound of Winter's fingers pumping in and out of her, fingering her needy cunt with a pace that's starting to make her begin to uncontrollably moan.

Winter's free hand lands on top of Karina's mouth. "Baby-girl, you have to be quiet," she whispers into her ear.

Karina almost comes right there when Winter calls her something so sweet and endearing in contrast to the way that she's roughly pumping into her. Karina whimpers and nods while gripping the back of Winter's head harder, grabbing a handful of long, dark hair.

"Be quiet, okay?" Winter says once more. She drops her hand away from Karina's mouth and slides it inside of the girl's white blouse.

Surprised by the feeling of Winter's hand inside of her bra, fondling her bare breast, Karina shamelessly moans, but quickly clamps her own hand over her mouth, surprised by the sound.

Oh god, it feels so good to be fingered like this. Even on the odd occasion when Karina masturbates with her fingers inside of herself, she never thrusted in and out of herself with such vigor. She didn't realize how much better it could feel when talented hands were playing with her pussy instead. Her thighs start to quiver and her feet scramble to keep planted against the couch edge.

"I can't believe how wet you are," Winter moans into Karina's ear. "Your pussy's so tight. Fuck."

Karina can't take it anymore. She can't believe how powerful the combination of Winter's hands and words are. The effect that they have on her body is almost humiliating. She bites into the skin of her palm to suppress the embarrassing noise that starts to come out of her mouth while her other hand grips hard onto the back of Winter's head. For the first time in her life, Karina comes because of someone else's touch. Her hips try to lift up, but Winter helps keep them pinned down as Karina clenches around her fingers and comes all over them.

As Karina writhes through her orgasm, Winter's hands go still as she holds the girl down, all while softly kissing her neck to help ride her through her climax. When Karina starts to come down and melts against Winter's body, the older woman gently slides her fingers out of the girl's pussy, feeling a shiver pass through her when she accidentally brushes against her sensitive clit.

Dazed, Karina watches her Winter-unnie's hand pull away. She doesn't miss how the woman's digits are shining in a sticky residue of cum. Karina blushes, but even more so when she hears the distinct sound of Winter's wet mouth sucking on her fingers behind her. Did she just…? Karina really, really blushes.

Still coming down from her high, it takes a moment for Karina to register the feeling of Winter shifting behind her as the woman reaches between their bodies. When Karina feels the distinct feeling of Winter's hand moving up and down, she realizes that her unnie is jacking herself off.

"U-unnie," Karina gasps, still panting hard. She attempts to look over her shoulder.

Winter presses her forehead into Karina's back and tightens an arm around the girl's waist, preventing her from turning around.

Karina really wants to see Winter's cock though.

"Winter-unnie," Karina tries again, trying to crane her gaze over her shoulder.

"Fuck…fuck," Winter softly gasps.

Karina is still buzzing from her orgasm, leaving her body weak and unable to pry Winter's strong arm off from around her waist. All she can do is rub the woman's arm around her waist, touching Winter in any way possible to stay connected with her as she continues stroking herself. Karina's pussy throbs at just the mere thought of what Winter's cock must look like and how turned on the older woman must be to masturbate right behind her.

Eventually, Karina feels Winter's strokes get more and more frantic until she stills completely. Winter's head digs harder into the girl's back as she whimpers and trembles, squeezing Karina's waist with her wrapped arm.

Karina wheezes. The thought of Winter-unnie coming in her pants…right behind her. Karina wants to see it so much.

"Winter-unnie," Karina whispers. She licks her dry lips, still catching her breath from earlier. "D-did you just—?"

"I'm sorry," Winter pants harshly. She rests her forehead against the back of Karina's hot neck. "I-I'm so sorry. I…I shouldn't have done…that," she gasps between breaths.

Winter was holding onto the girl so tightly before, but Karina can feel her unnie's grip relaxed now that she must be numb from her orgasm. Getting comfortable, Karina smooths her skirt back down, covering her bare lower half, before wriggling around a bit, just enough so that she can lay her head against Winter's shoulder. Winter-unnie looks so pretty with her hair tousled and her cheeks a little flushed.

Karina tries to sneak a peek, but Winter's hand is buried inside of her sweatpants. It leaves Karina imagining and wondering how much of a mess that older woman has made inside of her underwear.

Karina leans in and kisses the older woman's still panting mouth, meeting no resistance as Winter is still shivering through her high. "Don't be sorry," she whispers. "I liked it so much, unnie."