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planetaryupscaled · 2 months

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May the Best Sister Win

Male Reader x Heejin x Nana

Tags: 9k, first time, creampie, oral, threesome, tw

The story is not ours, we alternate the original story to match our desired settings.

“Fuck me, please, fuck me...”

I buried my head into Nana’s shoulder, focusing all my energy on thrusting into her tight, wet pussy. She groaned, pulling me into her.

“Cum, please,” she moaned. “I want to cum together...”

Nana and I had met doing theatre in college. She was a beautiful, slim blonde with big brown eyes that complement her features, and her nipples stood pink and pointy on her breasts, which, though small, fit her slender frame. I looked down her body, flushed with coital bliss, to the triangle of trimmed hair between her spread legs, and her open pussy that made a slick sound as I drove into her.

“I’m getting close,” I huffed.

“Cum in me,” Nana said. “Fill me up.”

All of a sudden, we heard a voice from Nana’s living room: “Nan? Nana! HELLO?”

“Shit, that’s Heejin,” Nana whispered to me, rolling off me and throwing on one of my sweaters, which was large on her. “Quick, get dressed.”

My cock was shiny and throbbing, unhappy to be interrupted so close to completion, but there was nothing to be done. I pulled on some gym shorts.

“Hello!” Heejin said in a singsong voice as she burst happily into the room.

I think I managed to get my shorts up in time, but if Heejin saw, she didn’t react.

“Hey, Jin,” Nana said. “Nice of you to do away with that annoying custom of knocking before you enter.”

In my sexually frustrated state, I couldn’t help but notice how pretty Nana’s younger sister was.

Heejin was a freshman beauty with blonde hair that framed her angelic face like a young starlet. She had a petite figure just like her older sister, but with more generous curves, filling out a regular t-shirt with firm, prominent breasts.

“I got a call back!” Heejin happily bounced around, not seeming to notice that Nana and I were flushed and out of sorts from almost having been walked in on.

“That’s... great,” Nana said, hesitating. “That’s impressive, especially for a freshman.”

Nana had told me all about her competitive relationship with Heejin. The same sports teams, the same roles in high school, Heejin even went after some of Nana’s boyfriends back in the day. Nana hadn’t been happy that Heejin had chosen our university, and wouldn’t be happy that Heejin was challenging her for the lead roles in the shows that were once Nana’s uncontested. Still, their mother said they had to live together, so Nana could help Heejin stay sheltered from the worst of college.

“I’m sure I won’t get it, but it’s so cool to even be at callbacks,” Heejin said. “Wow.”

“Suho auditioned too,” Nana said. “He’s a lock for the male lead, I bet.”

Heejin looked me up and down. “He certainly looks like a dashing leading man to me.”

“That, and the fact that everything is easier for men in theater,” I said. “The bar’s not so high.”

“Well, I just wanted to share the good news,” Heejin said, heading for the door. “I’ll see you guys at callbacks! Maybe spend more time practicing, and less time having sex!” She giggled as Nana threw a pillow at her.

“That won’t be a problem for you,” Nana called after her, teasing. “Virgin!”

All we could hear was the sound of Heejin’s cute laughter as she slammed the door of her room.

—

“Oh, huh,” Nana said, studying the callback pairings on the sign-up sheet. “I have to do my scenes with Minsoo.”

Minsoo was a good friend of ours, a theater die-hard who would get the lead role every time if he were able to act convincingly straight. Unfortunately for him and luckily for me, our theater director Hanjae refused to believe him as a romantic interest for the women.

“Better than a random stranger,” I said. Minsoo was a good guy. “Who am I doing mine with?” I studied the list. Then my stomach dropped. “Oh, shit.” I was supposed to do the kissing scene with Heejin.

Nana saw it, too. “You and Heejin? Of course you two would be paired up.”

“I’m sure I can ask Hanjae to switch us.”

“No, it’s okay,” Nana said. “What he says goes, and you don’t want to make him mad.” She kissed me on the cheek. “Have fun. It’ll be the thrill of Heejin’s life. She’s always gone after my boyfriends anyway.”

Just as Nana disappeared to run lines with Minsoo, Heejin spotted me from down the hallway and came up to me. She was dressed in a t-shirt, as usual, but this one had a lower neckline, offering me a tantalizing view of her cleavage. From what I could see, her tits were perfect, soft and smooth. I tried not to look at them as she approached.

“So, we’re together, huh?”

“Guess so.”

Heejin darted in and kissed me quickly, just a quick peck on the lips. I pulled back, too late, surprised.

“What was that for?”

“Just to get the awkwardness out of the way,” Heejin said. “Now we’ve had our first kiss.”

We found an empty classroom ran through lines quickly. I kept stumbling over mine, distracted by the beautiful girl in front of me. When we got to the kissing scene, Heejin lowered her script, looked me in the eyes and came in close to kiss me. I caught a light scent of a sexy perfume on her neck as she tilted her head up.

I hesitated. This was my girlfriend’s little sister; wouldn’t it be weird to kiss? I mean, to really kiss? Heejin, luckily, made the decision for me. She pressed her soft, full lips to mine, kissing me gently. I reacted, putting a hand on her cheek and pulling her closer to me, our lips working against each other. She tasted like mint. It went on longer than it had to — her character was supposed to pull away, but Heejin didn’t. Finally, I stopped it.

“Whew,” Heejin said breathlessly, cheeks turned pink and her chest heaving. “That felt good, right?”

I was half hard and I tried to secretly adjust my cock.

“Yeah,” I said. “You’re —” I almost said “You’re a good kisser,” but I stopped myself. “I think we’ll do great in the audition.”

We were finally called into the audition room. Behind a folding table sat Hanjae, the theater director, and a few of his assistants. We said hi, chatted quickly, and then got into the scene. Heejin and I were playing secret lovers. I was the stable boy and she was the Lady of the manor, whose husband was unfaithful. In the scene, I approached her for the first time, professing my love and begging her to kiss me.

When it came time, Heejin pressed herself to me with a little less passion than when it had just been us alone, but the kiss was still electric. She pulled back at just the right time, her character berating mine for showing such rough manners. But I could tell by her rosy cheeks that the second kiss affected her just as much as the first.

After we finished the scene and went back into the hallway, Nana came up to us.

“How’d it go?”

“Perfect,” Heejin said, punching me lightly in the arm. “Once Suho got around his hesitation to fully kiss me.”

Nana made a face. “The less I have to think about it, the better.”

“Your scene went well, too?” Heejin asked sweetly, changing the subject.

“Sure did.”

“Then may the best sister win.”

—

“That little bitch,” Nana fumed, staring angrily at the cast list. She had run ahead and gotten to it before I got a chance to look. “She took my fucking lead role.”

My stomach clenched. If Heejin was the female lead, then...

“God damn it.”

“What?” Nana looked down the list. Her eyes widened even further. “Fuck. Fuck, fuck, fuck, fuck, FUCK!”

I had landed the male lead. Heejin and I would be making out and simulating sex onstage for the next several months. I can’t say I didn’t feel any excitement at the prospect, but as Nana’s loving boyfriend, I had to share her frustration.

“We can ask Hanjae to switch us up,” I said.

“He’ll never do that! His casting decisions are always final, you know that! The only way he’ll switch it up is if Heejin agrees to it.”

Right on cue, I saw Heejin’s golden curls coming down the hallway towards us. Nana hurried up to her.

“You can’t take the lead role,” Nana said. “It’s you and Suho.”

Heejin took in this news and smiled at me. “I’m happy that Hanjae made the right choice.”

“Heejin, I’m a senior and you’re a freshman. This is my last chance at the lead before graduating.”

“I’m sorry,” Heejin shrugged, innocently. “I don’t know what you expect me to do. If this is about Suho, then I promise he loves you enough that kissing me a few times a night won’t change that.”

“It’s not just about that,” Nana said. “This was my theater program, not yours.”

“WAS your theater program,” Heejin said.

With a roar, Nana jumped at Heejin, and the two girls fell to the floor, clawing and pushing at each other. I watched them get tangled up with each other, then realized I should probably step in. I pulled Nana off of Heejin.

“Hey, whoa, calm down.”

“You’re such a bitch,” Nana snarled at Heejin.

Heejin dusted herself off and got up. “Fine, big sis. You want me to give you the lead role? Come walk with me. I have an idea for a wager.”

Nana frowned, trying to tell if Heejin was serious.

“Fine,” she said, hesitant. “But this better be good.”

“Oh, it’ll be VERY good,” Heejin said with a look at me. “Now come. Time for some sister talk.”

I watched the two sisters walk away, deep in conversation. Heejin glanced back in my direction, and I couldn’t help but wonder whether this wager involved me.

—

A few days passed. Rehearsals began in earnest, but Hanjae kept stopping Heejin and me midway through our scenes together.

“I don’t believe the passion,” he snapped. “You two touch each other like robotic, not sexy.”

Heejin flushed with embarrassment. The rest of the rehearsal she was withdrawn, not willing to look me in the eye. We went through our scenes, but if anything, she was colder and more mechanical than before.

After rehearsal, I pulled her aside in the hallway. “Are you doing okay?”

“I’m fine,” Heejin said.

“Don’t worry about what Hanjae said. He thinks you have to be mean to get the best performances out of people.”

“Maybe he’s right, though.” She looked around, making sure no one could hear. “Because I don’t know anything about sex.”

I spotted an empty classroom down the hall and pulled Heejin into it. She looked like she was about to cry. I put my hands on her shoulders.

“You’re doing a great job, you’re a great, and you don’t need real-life experience to get into the role. We’ll both figure it out, it’s only the first week of rehearsals.”

“What if I can’t figure it out?”

“You will.”

Heejin nodded, sniffling. She smiled shyly. “Plus, I’ve got you to teach me.”

“What do you mean?”

“You obviously know a lot about sex and everything,” Heejin said, embarrassed. “I can hear you and my sister sometimes.”

I didn’t know how to feel about that. Heejin flushed.

“I’m sorry, I shouldn’t listen, I know, but... it’s sexy to hear how much you love each other’s… bodies. I’ve never... done it, so I don’t know.”

“Yeah, Nana said as much.”

There was a charged pause. Glancing down, I could see Heejin’s nipples through her shirt. Did she never wear a bra around me? Was that on purpose? My cock was quickly getting hard.

“Hanjae said we really needed to commit to the role,” Heejin said. “That includes the romance of it, right? The characters are supposed to feel each other up.”

“Yeah, but...”

“But what? So you’re dating my sister, who cares? We have a play to do. She understands that the show must go on.”

Heejin took my hand, then guided me to her breast. As I felt the soft, firm flesh of her tits beneath her sweater, I realized that she wasn’t wearing a bra. I could feel her nipple hardening under my touch. Her breasts were unbelievably shapely even without a bra, standing perfectly from Heejin’s chest. I let out a breath, impressed. Heejin smiled.

“What do you think?”

“They’re... amazing.”

“Not too big? I know Nana’s are more petite.”

“You two have some of the most perfect tits I’ve ever seen,” I said truthfully.

Heejin smiled. “It must run in the family.”

“You’ve never been told what incredible breasts you have?”

“You’re the first one to get an up-close view. I’ve never even had a boyfriend,” she admitted. “I’ve been too busy with theater.”

“Wow.” I realized I was still cupping her breast and quickly took my hand away, embarrassed. She laughed that same cute laugh.

“You can touch them all you want,” she said. “It feels nice.”

I wanted to keep feeling her up. What guy would say no, in my position? But I cleared my throat and took a step back.

“We should get to practicing,” I said. “We’ll have to have something to show for today.”

Then Heejin said something I’ll never forget.

“Sometimes I touch myself to the sound of you two,” Heejin said, quiet. “Right at the end, when she’s begging you to cum inside her, that’s my favorite.”

My mouth was dry. “You touch yourself to the sound of us?”

“My sister must have a really amazing pussy, if she can get you to cum inside her so much.”

A picture of it sprang to my mind: two plump outer lips that sealed tightly, with the inner lips only visible when she spread her legs. A fuzzy dusting of light hair. Maybe a drop of my cum oozing from her. Nana’s small nipples, twin peaks further up her lithe body.

“Wow, you’re hard.” Heejin was staring directly at my cock.

“Yeah...”

She reached out her small hand to feel me. I inhaled sharply, taking her hand.

“Don’t, Heejin.”

“Nana won’t know.”

“I’ll know.”

“You’re just helping me. I need to practice being sexual for the role.”

I stared at her. Was she serious? What was she even proposing?

She took my hand and guided it under her dress. As she used her other hand to pull aside her panties, my hand came in contact with a wet, shaven pussy. I ran my middle finger up her hot slit, making her moan. Then I pulled my hand away, realizing what I was doing.

“Wait, Heejin...”

“Yeah. Let me do you.”

She unbuckled my belt and undid the button of my trousers, maintaining eye contact with me. Before I knew it she was on her knees, pulling down my pants. I wish I could say that I pushed her away, but I was horny enough to let it continue without protest. I wanted her badly enough to invite whatever catastrophe lay down the road.

Heejin took out my cock, which was harder than I remember it ever being.

“Wow,” she said with awe. “I guess I didn’t expect it to be so… big.”

She gave it a squeeze, then stroked it. I throbbed in her hand.

“I’ve never touched one before.”

“You don’t have to —”

Heejin sank her mouth onto my cock. The sudden warmth and wetness was heavenly. Her tongue swirled around my shaft and she slid her lips back up until just the tip was in her mouth. I noticed that she was still wearing lipstick from rehearsal.

“Give me pointers,” she said, her words muffled around my dick.

“Don’t worry about that,” I replied. “Just explore. I’m probably not going to be able to last for long anyway.”

At this Heejin smiled and eagerly set to sucking my cock. It seemed she took that as a challenge. She started slow, letting me feel the warmth and softness of her inexperienced mouth, then began to speed up. Sure enough, I felt the tingly beginnings of a climax. It was unsurprising; my girlfriend’s younger sister, a beautiful woman with a perfect mix of innocence and sexiness, was blowing me.

I swelled in her mouth, unable to hold back my orgasm for much longer. Her ruby red lips were stretched around my cock, working up and down ceaselessly. I watched my cock disappear into her mouth over and over.

“Heejin, I’m getting close...”

In response, she just kept bobbing her warm, wet mouth on my dick, taking as much of me in her mouth as she could. She looked up at me, big brown eyes that looked so innocent, right over a mouth full of cock, and I could hold back no longer.

“Heejin, I’m going to cum...”

I had barely finished the sentence before my cock began to spurt cum into Heejin’s waiting mouth. Her eyes widened in surprise but she kept on sucking me as I came. I shook, my hands going involuntarily to her head, trying to push deeper into her throat, filling her mouth with my semen. I rode out my climax between her full lips, cumming intensely until a small bit of my cum dripped out around my cock.

She looked up at me, slowing the up-and-down motion on my shaft, then swallowed her mouthful my cum. With her pinkie finger, she brought the one escaped drop of cum back to her mouth and swallowed that, too.

“Good?” Heejin asked, breathing hard.

“Best blowjob I’ve ever had.”

Heejin smiled and kept licking me. When I was sucked dry and she had completely cleaned off my cock, she took me out of her mouth and looked up at me.

“There you go. Nice and spotless for when you fuck my sister later.”

I didn’t know what to say or do. “Oh my god, Heejin.”

Heejin planted an adorable and sexy kiss on the tip of my cock, which shone with her spit.

“Now when I hear you tonight, I’ll know you’re thinking about cumming in my mouth when you finish in my sister.”

—

“It was a little awkward having to kiss,” I said to Nana at home. “But we got through it.”

Nana kissed me, long and deep. “Who’s the better kisser?”

In truth, my initial thought was Heejin. She had certainly kissed my cock better than Nana did. Or maybe it was just the forbidden risk of it all. Either way, I wasn’t going to tell her anything about her younger sister’s skill in the romance department.

“You,” I said, sweeping her into my arms. She grinded into me, making me hard, and I walked her to the bed.

Later, as I fucked Nana’s tight, wet pussy, my thoughts kept being dragged back to Heejin’s lips on me, her rosy cheeks stretching as I filled her mouth with my cum. When I groaned and emptied myself into Nana, I imagined it was Heejin below me, her legs spread, soaking pussy stretched around my cock. I imagined driving hard into her tight young slit and filling her up.

When Nana moaned out for me to cum inside her, I knew Heejin was somewhere close by, listening. And despite the fact that it was the second time that day, I came harder than usual.

—

The next weeks of rehearsal raced by. Heejin and I were so busy with school and rehearsal that we didn’t get the opportunity to be alone together, but she’d hold my gaze just long enough to let me know she was still thinking about me and what we’d done. Our love scenes onstage became more realistic, to the delight of Hanjae. We were now kissing, pawing at each other, and fake dry humping with ease. I suppose it was hard to hold back romantically once she’d swallowed my cum.

My sex life with Nana improved drastically, wound up as I always was from pretending to fuck her little sister in rehearsal. I fucked Nana like an animal, filling her up several times a night, cumming inside her with reckless abandon.

“You should be quieter,” Nana panted to me one night as I withdrew my cock from her cum-filled pussy. “Heejin’s in the other room, she must hear us sometimes.”

“You’re right,” I said. “Sorry.”

Nana reached down and caught some of my cum as it dripped out of her. She brought her fingers to her mouth, licking them off.

“You’ve been cumming more than usual,” she said.

I cuddled up to her from behind. “You’ve been sexier than usual.”

“Yeah, yeah,” she said, with a hint of scepticism in her voice. “Maybe.”

—

Before we knew it, the dress rehearsal had arrived. It was the day before the show, and everything had to go perfectly here, or it’d be a bad opening night. I murmured “Break a leg” to everyone I passed in the winding hallways backstage.

As the lead, I had my own dressing room. It was a rare luxury, but better than getting naked in front of everyone in the communal dressing rooms. I began to take off my street clothes when I heard a knock at the door.

“One minute, I’m changing,” I called out. I was only in my underwear.

The door opened anyway. In the mirror, I saw Heejin enter, wearing a robe and carrying her costume. She shut the door behind her before anyone could see her.

“Sorry to drop in on you like this,” Heejin said apologetically, “but I can’t get this bodice thingy on. Every time I try, I feel like it’s suffocating me.” She shook the costume in frustration and put it on the rack in my small dressing room.

“Do you want help?”

“Yeah, thanks. Maybe I’m just nervous, or maybe I shouldn’t have eaten that cheeseburger yesterday.”

I laughed. “It’ll be fine. Let me try.”

She hugged me tightly. “Thank you, Suho. You’re the best.”

Then she slipped the robe off her shoulders. Underneath, Heejin was completely naked. She wasn’t even wearing panties under the robe. Her breasts were like a painting. Smooth, firm, round, perfectly proportioned to her toned body. My eyes traveled down from her perfect breasts, firm and large on her petite frame with beautifully hard nipples, to —

“God, Heejin.”

Her pussy, which had been completely hairless when I first touched it all those weeks ago, now had a fuzzy dusting of close-trimmed pubic hair.

“Trying to copy Nana, I guess. Since you like hairy pussies.”

I didn’t think to ask why she knew her older sister had a hairy pussy.

I reached out my hand to Heejin. I cupped her cheek, then traced my fingers down her neck to her collarbone, then down the beautiful slope of her breasts, stopping to lightly pinch her nipple. She closed her eyes, savoring the feeling.

I brought my hand further down, down her stomach and over the triangle of hair between her legs, then felt the wetness between her lips. I slowly inched one finger up into Heejin’s little pussy, feeling how tight she was inside. I’d been in her mouth, and I’d touched the outside of her pussy, but this was as far inside her as I’d gone.

Just as Heejin leaned in to kiss me, hand going to my throbbing erection, there was a knock on the door.

“Suho? Can I come in?” It was Nana.

Heejin dashed backwards, looking for a place to hide. The room was small and didn’t have many options, but Heejin pressed her naked form behind the rack of costumes.

I cursed myself, trying to pull on my pants. My finger was still wet with Heejin’s juices, which wouldn’t do. Without thinking, I stuck my finger in my mouth, tasting her.

“Suho?”

“Coming!” I answered the door, just wearing my costume pants. I kept the door mostly closed, to stop Nana from coming in.

Nana was in the doorway holding a clipboard and wearing a headset. As the understudy for the main role, she had to have some role in the show, so she was a stage hand.

“It’s five minutes until showtime,” she said.

“Thanks.”

She leaned in to kiss me. Without thinking, I kissed her back, then cursed inwardly. I hoped my mouth didn’t taste like pussy. When she pulled away, I thought I detected a slight frown on her face, but she turned and left without another word.

I closed the door. Heejin, still naked, stepped out from behind the costume rack. She had the most beautiful body I’d ever seen.

“Five minutes,” I repeated to her.

“Thank you, five,” she said with a grin. “Now, want to fit me into this dress?”

It took some manoeuvring to tie the bodice up, and Heejin gasped at the tight fit that pressed her breasts up high, but there was no time to enjoy it. We had to get into our positions.

As Heejin quickly pulled her stockings up, I got a glimpse up her dress to her pussy.

“You’re not wearing underwear,” I said.

“I know.” Heejin quickly hurried to the door, her breasts bouncing in the corset. “See you onstage!”

—

The knowledge that Heejin wore nothing under her heavy costume dress made the onstage love scenes even more enjoyable. At the point in the show where we were supposed to simulate sex on a bed behind the main action onstage, Heejin whispered to me between kisses.

“This is the first time Nana’s seen us do this, you know.”

Sure enough, I could see Nana sitting with other crew members in the audience. Thanks to the lights, I couldn’t make out her expression, but I knew she was watching.

“Let’s give them a show,” Heejin said, and grinded herself against me even more sexually.

By the end of the show, I was so sexually frustrated that everything could have set me off. Heejin’s enticing young body was so tantalizingly close, yet so far. As we took our mock bows and headed offstage, Heejin whispered in my ear: “Wait for me in the dressing room.”

I waited for Heejin in the dressing room for almost a half hour. She never showed. When I finally got fed up waiting and came out, I found Nana and Heejin seated together. Heejin had changed back into her clothes, but I couldn’t help wondering whether she’d put underwear on.

“Hey, you two.”

“You took forever in there,” Nana said.

Heejin gave me a “Sorry” look.

“Great job, you guys!” Nana said. She seemed genuinely excited for us. “I think that went great!”

Heejin and I smiled and agreed.

“A couple screw-ups,” Heejin said, “but nothing that can’t be fixed before tomorrow.”

—

When we got home later that night, Nana pulled me away into her room. She was on me immediately, hungrily pulling off my clothes.

“God, you looked so sexy onstage,” she said. “I wanted to jump you right in front of everybody.”

She pulled down her pants, then mounted me, bottomless. She moved her soaking slit against my painfully hard cock, but stopped short of slipping me inside her yet.

“It was weird seeing you kiss Heejin at first,” she said, “but by the end I kind of liked it.”

She angled my cock into her pussy and began to sink her tight, wet heat down onto me. My face contorted with pleasure.

“Do you get hard when you’re with Heejin onstage?” Nana asked as she slowly fucked me.

I was shocked by the question. My shock must have shown on my face, because Nana laughed and kissed me. We were fully connected, my cock deep inside her and her petite body pressed into mine.

“It’s okay,” she said. “It’s a physical response, not something you can control.”

My cock throbbed inside her. I was nearing orgasm.

“Tell me,” she said, speeding up on my cock.

“Sometimes, I guess,” I said, breathing heavily. I was going to cum.

“That’s okay, baby,” Nana moaned in my ear. “She can feel you hard all she wants, as long as you bring that cum home to where it belongs… right up inside me.”

With that, I shot off in her, pumping her full of cum with deep, powerful strokes. The feeling of me cumming in her set Nana off too, and together we came while I was still inside her. Finally, I pulled out of her, looking down at her tight pussy with open lips, between which my cum dribbled out. Nana lay back on the bed, her legs spread, still wearing her shirt. She yawned, stretching, and as she did so she lifted her pussy off the bed, causing another dribble of cum to come out.

“I didn’t realize how tired I was,” Nana said. “Come cuddle me.”

I held her until I felt her breathing become slow and regular, indicating that she’d fallen asleep. Then I got up and padded out into the hallway, heading in the direction of the bathroom, though I knew what awaited me before I got there.

Halfway down the hallway, Heejin’s door opened and she came out wearing a sheer nightie. Even in the low light, I could see her nipples poking through the fabric. Her eyes went to my half-erection clearly visible through my tight boxers. She beckoned me inside, and I followed silently. She pulled off her nightie, then turned to face me, fully naked. Heejin led me to the bed and pulled down my boxers.

“This is too risky,” I whispered. “What if your sister comes to check where I am?”

Heejin touched my cock, still wet and sticky with residual slickness from Nana’s pussy.

“Then she’ll see me tasting her on your cock.” Heejin licked slowly up the side of my shaft, savoring the taste of her older sister’s pussy on me. “Mm. Nana has a delicious pussy, doesn’t she?”

“Sisters don’t usually taste each other’s pussies.”

“I’m not getting it from the source,” Heejin said quietly as she bobbed her mouth up and down on my cock. “I’m still just sucking a dick. Nothing wrong with that. Besides...” I saw Heejin dip her finger into her own pussy, then bring it to her mouth and suck it clean. “I have to make sure I taste better than her.”

She resumed blowing me. Despite just having finished fucking Nana, I found myself getting close to cumming in Heejin’s mouth. She felt me swell and pulled me out. I was about to ask what she was doing, when she climbed up on the bed and spread her legs. Light came through her window, falling across her perfect body and her glistening, hairy vulva.

“I want you to fuck me. Be my first.” She said seductively.

As she spoke, she delicately dipped her middle finger into herself. I watched as her tight lips parted to accept her finger.

The prospect of fucking the freshman beauty was enticing. But I’d been spurting cum in her sister’s pussy barely 15 minutes ago. That was no way to lose your virginity.

“I just finished with Nana, I’m not gonna be able to go again.”

“I’ll blow you until you’re ready to put it in me —”

“Heejin,” I said firmly. “We can’t have sex.”

“But the whole show today, I could feel you hard against me,” Heejin said. Her voice quavered. “What is it? You don’t like me? You’d rather fuck Nana than me?”

“No, no, it’s not that at all —”

“Then what? Does she have a better pussy than me?”

“Heejin — it’s not like that”

I climbed onto the bed, moving up to kiss Heejin. As I did, I pressed my body to hers, feeling her hard nipples against my chest and her wet pussy against the outside of my boxers. I grinded into her for a moment, but stopped it before it went any further by beginning to kiss my way down her body. First her breasts, then her toned stomach...

“Fuck...” Heejin breathed. I grinned inwardly; two months ago, the sheltered freshman wouldn’t have been cursing. Now I was about to eat her pussy.

I kissed Heejin’s inner thighs, teasing her and making her thrust up towards me, trying to get me to put my mouth on her. But I kept kissing anywhere but her pussy, feeling the heat and wetness increasing with her arousal.

Finally, I licked Heejin’s pussy. She tasted incredible, clean and womanly, and she was so sensitive and worked up that it only took ten or fifteen seconds before I could feel her body stiffening in anticipation of an orgasm. I kept up pressure on her clit, steadily working my tongue in circles.

Heejin grabbed me by the head, involuntarily mashing my face into her pussy, then came with a great shuddering moan. I reached up one hand, slick from finger-fucking her, to silence her, but all she did was suck on my fingers while I kept licking her from below.

When she was finally done with her long orgasm, she brought my head up to her to sloppily make out. My lips were covered with the taste of her, but she clearly wasn’t shy about tasting herself.

“Oh my god, you’re amazing,” Heejin said, panting. “But we have to return you to Nana soon.”

Heejin put her mouth back on me, blowing me with eagerness. After making her cum with my mouth, I was pretty worked up. It didn’t take me long to unload in her mouth for the second time. Now I wasn’t so timid, fucking her mouth as I spurted cum down her throat. She moaned sexily and happily drank me up.

She opened her mouth so I could see the mouthful of my semen she’d collected. Then she put two fingers in her mouth, took some of my cum, and…

“Heejin, no —”

Heejin stuck her cum-covered fingers inside her pussy. I could only watch as she fucked herself to another small orgasm, her fingers taking the place my cock would have been. She’d still found a way to get my cum in her pussy, and gasped in pleasure as she worked my semen in and out of her already sopping slit.

“What the fuck are you doing?”

“Sorry, Suho,” she breathed. “I had to.”

“That’s dangerous, Heejin. You could get pregnant.”

“I don’t like when Nana gets things I don’t. And that includes your cum in her.”

—

Opening night came at last. I was overwhelmed with nerves, both excited at the prospect of putting on a great show and nervous to think what would happen with Heejin. The girl had been acting bolder and bolder, and I worried she’d try to do something extreme.

But as the evening before the show wore on, my fear faded. Heejin ignored me completely, focused on getting into character. Everyone buzzed with excitement and nervousness, and I soon was so caught up in it that I forgot almost entirely about the strange sexual relationship I had been building up with Heejin.

It was a function of the show, I told myself. Just us getting into character and letting that character bleed over into our real lives. But once the show was done, I would return to Nana’s side, Heejin would go off and find herself a boyfriend, and everything would be right in the world again.

At least, that’s what I told myself.

I don’t know if I even believed it at the time.

I checked my costume in the mirror of my dressing room one last time before nodding, satisfied, and joining the fray.

“Break a leg,” Nana said, kissing me briefly before heading out to the theater to find her seat. I watched her go. For all she knew, I felt as awkward as her about this whole situation. But in truth my feelings were more complicated than that.

Heejin and I waited with the other actors in the wings as Hanjae introduced the show. I looked up to find Heejin staring at me intensely.

I gave her “What’s going on?” look.

Heejin, in response, lifted up her skirt ever so slowly. She was standing behind the other actors, so I was the only one who could see. As she flashed me, I saw with a twinge that, like yesterday, she was wearing no panties. I caught a short peek of her pussy.

That’s when I knew things weren’t going back to normal.

The show began normally, everyone hitting their marks and remembering their lines perfectly.

The trouble came when Heejin and I fell into bed together at the rear of the stage. Our characters were supposed to be having sex under the nose of Heejin’s character’s husband, but while the scene went on in front of us Heejin kissed me and pressed her body into mine harder than usual.

Carefully, timing her motions with our stage humping, Heejin reached down between us and unbuckled my pants.

“What are you doing?” I said quietly, between kisses.

“Shhhh,” was all she said.

I looked out into the audience. Despite the stage lights, I could see Nana’s blonde hair in the crowd. She was watching us.

Under the covers, Heejin pulled down my boxers and fished my cock out. I was hard and huge in her small hand.

“Heejin, no —”

Heejin angled herself on top of me, pressing her stomach into my cock, trapping it between us. I prayed that was it, that all she wanted was a little humping, but then she slid up me. My cock, still hard and flat against my stomach, came into contact with her hairy mound. I tried to move away, but she was on top and we had to keep doing the scene, or we’d draw attention and get caught.

I felt a wet heat come into contact with my cock. She grinded her pussy up and down the underside of my cock, getting it wet with her slickness.

My tip was slotted between her wet lips. She thrust her hips up and down, letting the tip of my cock run along the cleft of her pussy and come to rest right at her soaked opening, teasing me each time with a tantalizing dip of my cockhead into her pussy. I could do nothing to stop it.

“Heejin,” I whispered. “please don’t do this, look at how many people are watching... and we’re unprotected.”

“That’s the whole fun of it all,” she said. “I want you bare inside me.”

She began to slide me inside her. My cock parted her trimmed lips and pushed into her inch by inch, her wet cunt stretching slowly to accommodate me. She was soaking wet, hot and beautifully tight, the kind of pussy that made me forget every other woman I’d ever been inside of, because this one seemed designed for my cock. I went slowly, the pleasure coursing through us.

When I had sunk into her to the hilt, we stopped.

“There we go,” Heejin breathed. “Now Nana can’t call me a virgin anymore.”

I opened my mouth to say something, but at that moment Heejin and I remembered we were onstage. We had been so distracted by our actual sex that we’d forgotten to simulate it for the audience.

“We need to keep going,” I whispered, pulling her tighter to me.

“I agree,” she said, bringing her pussy up and down, fucking me with an aching slowness. I wondered if Nana had ever told Heejin what I liked, or if she knew instinctively. God, she was tight. As I rolled my head over, I spotted Nana’s blonde mane in the audience.

“Nana’s watching,” I breathed into Heejin’s ear. My cock throbbed inside her, egged on by the risk and mind-bending pleasure Heejin’s young, perfect body was giving me.

“Good,” Heejin panted quietly. “I want her to watch as her boyfriend cums inside me.”

It hadn’t occurred to me that she wouldn’t pull me out. I didn’t want to cum in her, risking a pregnancy that would make the entire situation far worse. Knocking up your girlfriend’s little sister is never a good place to be, so I tried to move backward, but she was on top and I was too deep in her.

“You’re not on birth control,” I gasped, aware of how quickly the tight wetness of her around my cock was bringing me towards orgasm.

“I know. We’re being really bad.”

“Heejin, Heejin, fuck —”

My climax was approaching like a freight train. I couldn’t help it — I thrust into Heejin’s clenching tunnel with ferocity, her breasts bouncing slightly in the corset, right at my face. I wanted to reach out and tear off her dress, kiss her everywhere, but could do nothing but chastely kiss Heejin’s lips, otherwise the audience might know something was too real about the way I was thrusting into her under her dress and the covers.

“Cum in me,” she whispered in my ear. “Cum in your girlfriend’s little sister. Fill up my tight little pussy in front of everyone.”

I could feel her inner walls flexing, milking me. My cock swelled within her. With one last glance at Nana, I thrust up into Heejin’s pussy and let go.

I nearly blacked out in pleasure as I shot spurt after spurt of cum up into Heejin. She gasped, too loud, as my warmth splashed into her, then began to shudder and moan into my shoulder, grinding her clit hard into me. We were cumming simultaneously, me emptying all I had into her, and her body shaking, racked with pleasure. At that moment I didn’t care that people were watching. I just wanted her.

I quickly filled up her unprotected pussy with my cum, until I could feel it dripping out of her as I kept thrusting. She rode out the rest of her climax on my cock.

We’d both finished quicker than the allotted time for our lovemaking onstage, so we were forced to keep fucking even as my cock softened and came out of her cum-soaked pussy. I could feel cum dripping out of her slit onto my cock, and hoped none of it got on the costume.

Finally, the lights went down and the scene change began. Heejin and I rolled off each other with one final kiss. I tucked my cock back into my pants and she pulled her dress down. We went our separate ways in the soft light of the glow in the dark stage tape.

“Great job,” Hanjae whispered to me backstage. “Very believable.”

—

As we bowed to the applauding audience, Heejin squeezed my hand. Over the din, she said into my ear: “I can still feel you inside of me.”

“Good,” I said back.

I made my way to the dressing room, congratulating my cast mates on the way. Everyone was excited from a successful show, but I was still dazed, trying to work through what had happened with Heejin onstage. Had anyone seen us? Had we left behind any evidence? Would she get pregnant? Would Nana find out?

With all these thoughts swimming in my head, I opened the door to my dressing room. Nana was already there, waiting for me.

“Hello,” I said, not knowing what else to say. I shut the door behind me.

“You and Heejin did amazing work out there,” Nana said. She kissed me. “This time I couldn’t wait until we got home to fuck you.”

I knew I couldn’t have sex right away, seeing as I was still covered with the evidence of Heejin fucking me.

“Nana, wait —”

Nana pulled down my pants, revealing my semi-hard cock. It was shiny, still wet with Heejin’s pussy fluids and a residual amount of my cum. Nana grabbed it, feeling the wetness. She dropped to her knees.

“If I didn’t know better, I’d say you just fucked somebody.”

I tried to stop her, but she stuffed my cock into her mouth before I could say anything. Nana swirled her tongue around my slick cock, looking directly up at me. I watched, rapt, as she sucked her little sister’s juices off my hardening shaft, moaning around my cock. Was she... enjoying this? She had to know it was Heejin’s pussy she was tasting.

I tried to pull away.

“Wait, Nana, I’m sorry, but onstage... Heejin slipped me into her...”

Nana lifted off my cock. “You don’t think I recognize the taste of my little sister on my boyfriend’s cock? You two are fine actors, but not good enough to make real sex look fake. I could see every second of you coming inside her.”

At that, my dick jumped in Nana’s hand. She engulfed my cock with her warm mouth, bobbing up and down, sucking me. Then she looked up at me again.

“It was so fucking sexy; it was almost worth losing.”

Losing? Losing what? Before I had time to ask, we were interrupted by a voice from behind us.

“How do I taste?”

Heejin was at the door to the dressing room, still wearing her costume from the show, her breasts pressed high in the corset. She closed and locked the door behind her.

Nana continued to suck my dick for a few moments, like it was the most normal thing in the world for her younger sister to watch.

Heejin smiled, watching her big sister slobber on the cock that had so recently finished inside her. “I’ll take that as a yes.” Heejin sat up on the makeup table, pulled up her dress, and spread her legs, revealing her pink pussy beneath that trimmed bush. As she spread her plump lips with her fingers, my cum trickled slowly out of her tight hole.

At that, Nana finally slowed to a stop on my cock. She popped me out of her mouth and wiped away the juices coating her lips. Heejin was slowly fingering herself, rubbing my cum around her folds.

“The terms of the bet were clear,” Heejin said, looking at Nana. “If I didn’t manage to make him cum in me tonight, I had to bow out of the show and let you have the lead role. But if I did make him cum in me...”

“I know,” Nana said. She got up and crossed to Heejin.

“Sorry, but what is going on?” My head was spinning. This had all been some kind of competitive game between the two sisters?

“If I got you to fill my pussy with your cum onstage, a feat your girlfriend said was impossible, she’d have to lick it out of me.” Heejin spread her pussy lips with her fingers.

Nana lowered herself to her little sister’s sperm-filled pussy.

My jaw dropped as Nana reached out her tongue and made contact with her younger sister’s pussy. She licked from the bottom up, parting Heejin’s folds and sinking her tongue into her hole. I saw a pearl of my cum on the tip of Nana’s tongue. When she reached Heejin’s clit, Nana swallowed my cum, then licked Heejin’s clit, making the younger girl moan. Nana ran her tongue back down Heejin’s little pussy, then repeated the process. She managed to get some, but not all of my cum from Heejin’s pussy.

I could see Heejin’s breathing becoming ragged, see her body stiffening as Nana licked her. She was going to cum from her big sister’s mouth.

“Wait wait wait, fuck, oh god...”

Nana looked up at her sister, smiling as she licked her pussy more intensely. Now it wasn’t about licking my cum out of her slit. It was about making the younger girl cum. And cum Heejin did, her body seizing and her breasts jiggling as she held Nana’s face to her quivering pussy, riding out an intense orgasm on her sister’s tongue.

Finally Nana slowed to a stop and pulled back from Heejin’s shiny pink pussy.

“There,” she said, wiping her face off. “You won, fair and square.”

Heejin looked over at me. My cock was still out, standing up hard and throbbing. She got a mischievous smile on her face and began to pull her dress up over her head.

“How about a double or nothing bet?”

Nana looked over at me. “What do you have in mind?”

“We trade off. One minute each. Whoever can get him to cum first, wins.”

“Wins what?”

I was still shocked by Nana’s eagerness to eat her younger sister’s pussy and bring her to orgasm. Now she was going to agree to Heejin fucking me in front of her? What could be worth that?

“Him.” Heejin, now naked, got on her knees in front of me and slowly began to stroke my cock. “If you manage to make him cum inside you, then I’ll back off Suho and you can have your precious lead role. But if I make him cum inside me, I get him.”

“Easy now, I’m not comfortable with all this,” I said. I didn’t want my dating life determined by a competition between sisters. On the other hand, alternating between the two of them sounded extra hot, and I wasn’t thinking with my head.

“It’ll be fine, baby,” Nana said, stripping down. I could see a huge wet spot on her panties. “Just cum in me, not in her.”

“I don’t know...”

“What’s wrong, Nana? You scared?”

“No,” she said defensively. “I’m more experienced with him. I know how to get him to cum. It’s little miss barely not a virgin who should be worried.”

“Not even an hour ago he was cumming inside me,” Heejin scoffed. “Once he’s felt that, it’ll be hard to go back.”

Nana lay back on the floor, spreading her legs. Heejin leaned down and buried my cock in her mouth, giving it a few sucks before she took it out of her mouth, grabbed it in her hand, and angled it towards Nana’s slit. When my tip was nestled between my girlfriend’s hairy pussy lips, Heejin darted forward and planted a sloppy kiss on Nana’s clit. Nana gasped in pleasure.

“You ready?” Heejin said, straightening up. “And... go!”

I started fucking Nana. The horniness from the whole situation meant I was starting the drive on the fifty-yard line; it wouldn’t take much to bring me over the edge. Nana was wet, wetter than I’d felt her in a long time, and the tight, hot slickness felt heavenly.

“Cum in me, baby, please, please,” Nana moaned, her small tits bouncing with every thrust. “Please do it, baby...”

“Thirty seconds,” Heejin said. One minute was no time at all.

I sped up my thrusts. Nana flexed her inner muscles hard, and the tightness brought me closer, but I didn’t think I would be able to cum before the time ran out. I loved Nana, but after having Heejin, who was sex personified, I’d be lying if I said my sexy but familiar girlfriend matched up.

Heejin started to count down, timing it with my strokes. “Ten, nine, eight, seven, six...”

“Come on, baby, cum, you know you want to...”

I thrust hard, looking down at Nana’s pussy as it spread open for my cock.

“Five, four, three...”

“Baby...” Nana held onto me tight, but we both knew I wasn’t going to finish. Panting, I slowed down.

“That’s time!” Heejin exclaimed gleefully. “Pull out of her!”

“Fuck,” Nana moaned, disappointed. I withdrew from her, watching as her pussy lips gripped me like they were desperately trying to keep me inside her. Next to Nana, Heejin had her legs spread and her red, aroused, tufted pussy on display.

“Come here,” Heejin said. I positioned myself between her legs. Heejin took my cock and delicately slotted the tip into her. Nana watched, a flush of embarrassment creeping down her neck towards her breasts. I noticed that her nipples were still rock hard on her tits, which, though still perfectly shaped, looked even smaller in comparison to Heejin’s full and perfect ones.

Heejin looked up to her older sister, to make sure she was watching. “Thanks for warming him up for me, big sis.” I pushed an inch into Heejin’s tightness. Both sisters gasped. “Ooh, he’s so nice and slick,” Heejin cooed. “Thanks for the help there, too.”

I pushed all the way into Heejin, until my entire cock was grasped by her snug pussy. We stared at each other intensely. The first time we’d had sex was in the dark, covered so that it would be impossible to see each other. Now, I could drink in every inch of her. Her perfectly round, smooth breasts, nipples standing up straight like pencil erasers, and her neat, perfect pussy clenching my bare cock. I withdrew almost all the way, then drove back into her. Her tits bounced. I slowly built up a rhythm, thrusting into her.

“Of course he’d rather cum in me,” Heejin breathed. “I’m younger, I’m tighter, I’m forbidden...”

For a second, the only sounds were the wet squish of Heejin’s pussy and her quiet moans as I fucked her. Then I heard another slick sound and looked over. Nana’s eyes were glued to her little sister’s tiny, trimmed pussy, which stretched to fit me inside as I drove into Heejin over and over. Nana had her hand between her legs, playing with herself. She was driving her fingers up into her slit with abandon, as wet as I’d ever seen her.

It had only been thirty seconds or so. Fucking Nana had gotten me going, so I was already close. Heejin felt me get bigger inside her and bit her lip, scrunching up her face in pleasure.

“Ooh, I can feel him swelling inside me.”

Nana said nothing, continuing to masturbate. She had apparently already given into the idea that Heejin had won.

“He’s gonna cum in me,” Heejin moaned. “Your boyfriend’s gonna fill up my little cunt and you have to watch.”

Nana looked at me, pleading silently, but Heejin took my face in her hands and made me look at her. She was spread open before me, her body the image of perfection, taking my cock with little gasps of pleasure that were building toward a climax.

“Do it,” she whispered.

And I did. I drove fully into her, my cock jerking as it shot cum into her young pussy. Everyone’s eyes were glued on my cock, splitting Heejin’s lips apart and throbbing with every spurt inside her. Heejin was set off again by the feeling of me filling her up, moaning and shuddering. I watched as her pussy clenched me, quickly filling to the brim. Next to us, Nana’s petite breasts jiggled and she let out a high-pitched gasp, arching her back. She was climaxing at the sight of me cumming inside her little sister.

I kept cumming. Heejin’s small pussy overflowed with my sperm, each thrust pushing some of it out between her tight, hairy lips.

“Put it all into me,” Heejin said between gasps. “Every drop you have.”

After a few more spurts, I withdrew my cock from Heejin’s pussy. Heejin cried out at the sudden emptiness. On my knees, I approached Nana, whose legs were spread as she played with her pussy. I slotted my still-climaxing cock, covered in Heejin’s juices, into my girlfriend’s pussy.

Nana smiled as she felt me thrust into her, her tightness milking the last spurts of my cum.

“Thank you, baby,” she said. “Saving some for me.”

Both sisters lay naked below me, flushed chests heaving; Heejin’s large and firm, Nana’s small and cute. Their legs were spread, showcasing nearly identical haired pussies. And though Heejin’s pussy had more of my cum dripping out of it, as I pulled out of Nana I was happy to see that I had cum enough to see a pearl of semen between her lips, too.

“There,” I said as Heejin and Nana both began to clean off my cock, their lips occasionally touching as they licked me. “Now it’s a tie, and I get both of you.”

“For now,” Heejin said, looking up at me as she ran her tongue up my shaft. “But eventually, one sister always wins."

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