Alien

Dreamcatcher's Lee Gahyun x Female Reader

The apartment was quiet, except for the occasional clink of mugs as Y/N unpacked in the kitchen. Gahyun sat cross-legged on the floor of their new living room, surrounded by cardboard boxes and remnants of bubble wrap. They had officially moved in together—a milestone she once only dreamed about but now felt wonderfully real.

As she sifted through an old box labeled Memories, her hand brushed against something soft but familiar. Her heart skipped a beat when she pulled out a small stack of folded letters, tied together with a fraying ribbon. Gahyun smiled, recognizing the bundle instantly—the letters Y/N had written her years ago, back when everything between them was still unspoken.

She untied the ribbon and carefully unfolded the first note, the familiar handwriting bringing a wave of nostalgia. Her eyes skimmed the words, the same ones that had once filled her with confusion, excitement, and longing.

Gahyun chuckled softly, remembering the first time she had found one of these notes. It had been a typical day at the practice room, like so many others. She had just finished a grueling rehearsal, surrounded by her members. The exhaustion from preparing for their upcoming tour was hanging heavy in the air. 

Years Earlier

The members were scattered across the space—some stretching, others chatting. Gahyun, always the playful and energetic maknae, sat cross-legged on the floor, scrolling through her phone during a rare moment of downtime. She reached for her water bottle, but as her hand closed around it, she felt something crinkly underneath.

Frowning, she pulled out a small, folded piece of paper. 

“What’s this?” she mumbled to herself, glancing around. Everyone seemed occupied—no one paying her much attention. Y/N, Dreamcatcher’s social media manager, stood nearby, seemingly lost in her phone.

Curious, Gahyun unfolded the note, her eyes widening at the familiar handwriting. Dear Gahyun, it began, the words sweet and simple, yet carrying a weight she hadn’t expected.

You’re more amazing than you know. Your energy lights up every room, and I can’t help but smile whenever I see you. Keep being your wonderful self.

A blush crept up Gahyun’s cheeks as she read the words again. It wasn’t a long message, but it felt intimate, like the person who wrote it knew her better than she even knew herself. She glanced around the room, trying to figure out who could’ve written it, but no one met her eye. Everyone seemed lost in their own world.

"Hey, Gahyunie, you good?" Siyeon called from across the room, her voice pulling Gahyun from her thoughts.

Gahyun quickly stuffed the note into her pocket, offering a smile. “Yeah! Just… stretching.”

She smiled to herself as she took a sip from her water bottle. Whoever had written the note knew how to brighten her day.

It had been a few days since Gahyun had found the first letter. She hadn’t mentioned it to anyone, unsure of what to say or how to even bring it up. Was it a joke? A one-time thing? Part of her hoped she’d get another note, but she didn’t want to get her hopes too high.

After practice, Gahyun stayed behind in the dressing room to gather her things. As she zipped up her bag, she noticed something slipped under the edge of her jacket. Her heart skipped a beat as she picked it up—a familiar folded note.

She quickly opened it, her pulse quickening as she read the words inside:

Dear Gahyun,

Watching you laugh makes the hardest days a little easier. You remind me that there’s joy even in the little things. You’re truly special, and I hope you know that.

Gahyun’s hand trembled slightly as she held the note. There it was again, that warmth blooming in her chest. Whoever was writing these clearly saw her in a way that made her feel appreciated and cared for.

“Who could it be?” she muttered under her breath, glancing at the closed door. The mystery was beginning to gnaw at her.

She thought back to practice, trying to recall if anyone had been acting strange. Her eyes lingered on the memory of Y/N, who had been quiet during most of practice. But that didn’t mean anything, did it? She shook her head, unsure.

Sliding the note into her bag, Gahyun knew one thing for sure—she needed to find out who was behind these sweet letters.

Weeks had passed, and the letters continued to arrive in secret places—tucked in her jacket pocket, slipped into her notebook, and even hidden in her makeup case. Gahyun was touched by every single one, but her curiosity was driving her crazy.

She needed to talk to someone about it.

After a morning of filming for a variety show, Gahyun approached Jiu in their dorm living room. The eldest member was lounging on the couch, flipping through a magazine.

“Unnie, do you have a minute?” Gahyun asked, nervously rubbing her hands together.

Jiu looked up, her face softening. “Of course, Gahyun. What’s on your mind?”

Gahyun hesitated for a moment before taking a deep breath. “So… I’ve been getting these anonymous letters. They’re really sweet, and I’m pretty sure it’s someone in the group, but I have no idea who it could be.”

Jiu raised an eyebrow, a hint of amusement playing on her lips. “Love letters, huh? Sounds like someone’s got a secret admirer.”

Gahyun blushed, sinking into the couch next to her. “I guess so. But it’s driving me crazy not knowing who it is! Every time I think I have a clue, I end up second-guessing myself.”

Jiu leaned back, tapping her chin thoughtfully. She knew exactly who was behind the letters. She had caught Y/N slipping one under Gahyun’s jacket during practice just last week. But rather than spoil the surprise, Jiu decided to keep that little detail to herself.

“Well,” Jiu said with a teasing smile, “whoever it is, they clearly have good taste. You’re a catch, Gahyun.”

“Unnie!” Gahyun groaned, burying her face in her hands.

Jiu laughed softly before her tone became more serious. “In all honesty, Gahyun, maybe it’s best to let this unfold naturally. Pay attention to the people around you. You’ll figure it out when the time’s right.”

Gahyun sighed, her hands fidgeting in her lap. “ What if it gets complicated? I mean, what if it turns into something more? Wouldn’t dating be a bad idea for the group? Everyone knows idols dating is risky, and I don’t want to mess anything up.”

Jiu smiled kindly, setting her magazine aside. “I know dating as an idol can be tricky, and there’s always pressure to keep up a “perfect” image. But you’re a person first, Gahyun. You deserve to be happy, just like anyone else.”

Gahyun looked up, her brow furrowed. “But what if it’s bad for us? For Dreamcatcher?”

Jiu shook her head. “If you find the right person—someone who respects you, your career, and the group—then nothing else should matter. It won’t hurt Dreamcatcher if you’re happy. In fact, if anything, being with someone who makes you feel loved, will only make you shine brighter.”

Gahyun thought about that, biting her lip. “I don’t know... It’s just scary. I’ve never really thought about it seriously before.”

Jiu reached out, placing a comforting hand on Gahyun’s shoulder. “It’s okay to be scared. But don’t close yourself off to something beautiful just because of what people might say. You’ll know when you find the right person, and when that happens, you deserve to enjoy it.”

Gahyun smiled softly, feeling a little more at ease. “Thanks, unnie. That... actually helps a lot.”

Jiu gave her a warm smile. “Anytime. And just remember, you don’t have to rush things. Let it happen naturally. Whoever this person is, it sounds like they already care about you a lot.”

Gahyun nodded, feeling reassured by Jiu’s advice. Even though she still had no idea who the letters were from, she decided to take Jiu’s words to heart. Maybe it wouldn’t be so bad to let things unfold at their own pace.

Gahyun continued to find letters, each one more heartfelt than the last. Her curiosity had turned into a soft obsession—she found herself daydreaming about her secret admirer, wondering who could possibly know her so well. But no matter how much she pondered, the answer remained elusive.

Today, Dreamcatcher was in the studio again, practicing a new routine. The air was filled with the sound of music, but Gahyun was distracted. Her eyes kept flickering over to Y/N, who was taking photos of Dami in the corner of the room. Y/N’s presence had been lingering in Gahyun’s mind more and more lately. It wasn’t just because of her unfathomable instinct for their well being or her warm, easy going personality. No, it was something else.

After practice ended, Gahyun took her time packing up. She noticed that Y/N was also moving slowly, sticking around longer than usual, chatting with Jiu and Siyeon. Gahyun found herself observing every small detail—the way Y/N’s fingers fidgeted with her necklace, the subtle glance she cast in Gahyun’s direction.

Gahyun bit her lip, her heart thudding. Could it be her?

As she opened her locker, her breath caught. Another letter. Neatly folded, the familiar envelope had been slipped into her bag’s side pocket. The handwriting was the same as always, elegant but simple. Her heart raced as she looked around the room, her mind buzzing with questions. She had been near her locker the whole time... except when Y/N had gone to get a drink.

Coincidence? Maybe. But the timing was too perfect.

Dear Gahyun,

I've seen you practice and can’t help but admire your passion. You always give your all, and it’s one of the many things I like about you. I hope one day I’ll have the courage to tell you in person, but for now, these letters will have to do.

Gahyun felt her face flush as she read the words. This letter was different. It was more vulnerable, more revealing. Whoever was writing these had deep feelings for her, and the confession was practically spelled out in the note.

She held the envelope in her hand for a moment longer before tucking it away. She wasn't ready to confront her suspicions, not yet. There was something thrilling about the mystery, about the possibility that someone she admired could feel the same.

Later that night, she sat in her room, reading the latest letter under the dim light of her bedside lamp. it carried a warmth that made her heart flutter. Whoever this was, they knew how to make her feel special, loved even. And for the first time, she allowed herself to truly consider that it could be Y/N. The more she thought about it, the more things started to make sense—the lingering glances, the way Y/N was always nearby, the soft smiles exchanged during practice.

But how could she be sure?

The next day, Dreamcatcher had another busy schedule, with photo shoots and interviews lined up. Gahyun couldn’t help but feel distracted. Her mind kept drifting back to the letters, to Y/N, and the nagging question that wouldn’t go away.

As the group gathered backstage before the shoot, Gahyun noticed something out of the corner of her eye. Y/N was sitting by herself, casually scrolling through her phone, but there was something about her posture that caught Gahyun’s attention. It was almost like she was... waiting. Waiting for something, or someone.

Gahyun hesitated, but her curiosity got the better of her. She moved toward Y/N, trying to act casual as she sat down next to her. “Hey, Y/N.”

Y/N looked up, her usual bright smile lighting up her face. “Hey, Gahyun. What’s up?”

Gahyun fidgeted with the hem of her sleeve, feeling her cheeks warm. “Oh, nothing much. Just... wanted to talk.”

“About?” Y/N asked, her tone light but with a hint of curiosity in her eyes.

Gahyun searched for the right words. “You know... I’ve been getting these letters. They’re... really sweet. Thoughtful.”

Y/N’s smile didn’t falter, but there was a brief flicker of something in her eyes—surprise? Amusement? Gahyun couldn’t tell. “Oh? Letters, huh? From who?”

“That’s the thing,” Gahyun said slowly, gauging Y/N’s reaction. “I don’t know. But they’ve been... really nice.”

Y/N tilted her head, her expression carefully neutral. “That sounds exciting. A secret admirer?”

“Yeah,” Gahyun said softly. She bit her lip, wondering if she should say more. But something held her back, a little voice in her head telling her not to push it just yet.

Before she could say anything else, they were called for the shoot, and the moment passed. But as they posed for the camera, standing close to Y/N, Gahyun couldn’t help but feel like she was missing something obvious.

It was unusual for Y/N to miss any scheduled activity. As the team’s social media manager, she was always around, hovering near the edges of Dreamcatcher’s practice sessions, sometimes snapping candid photos or checking in with the members. But today, Y/N wasn’t there.

"Y/N’s sick," Siyeon had said nonchalantly when Gahyun asked about her absence. "She texted Jiu unnie this morning."

At first, Gahyun nodded, trying not to overthink it. It was just a regular day. People got sick all the time. But as practice dragged on, she found herself feeling... off.

She wasn’t used to Y/N not being around. Her quiet presence had become a comforting backdrop to their daily routine, and now the studio felt strangely empty without her.

Gahyun tried to focus, but her thoughts kept drifting back to Y/N. A part of her—one she barely wanted to admit—had been secretly hoping that Y/N was the one leaving her the letters. It wasn’t just because Y/N was always around, but there was something else. The way Y/N would smile at her, the thoughtful glances she’d catch during practice... it was easy to imagine that maybe, just maybe, Y/N was the one behind the sweet, anonymous words.

But today, Y/N wasn’t here. So, there couldn’t be another letter, right?

As the day wore on, Gahyun couldn’t shake her disappointment. She tried to push the feeling away, to ignore the nagging thought that maybe she was getting her hopes up too much. But it lingered, coloring her mood as she moved through practice.

When they finally wrapped up for the day, Gahyun headed to the dressing room to grab her things. She took her time, lingering behind the others as they packed up and left one by one. Her eyes flicked toward her bag, half-expecting to find it untouched.

But then she saw it.

A small, folded piece of paper, neatly slipped into the side pocket of her bag.

Her heart skipped a beat. It was another letter.

Gahyun quickly glanced around the empty room. No one else was there—certainly not Y/N. Her hand trembled slightly as she pulled the letter out, carefully unfolding it.

Dear Gahyun,

Even when the day feels tough, your smile makes everything brighter. Your presence alone can turn the darkest moments into something warm and hopeful. Thank you for being you, and I hope this note makes you smile the way you’ve made me smile countless times.

Gahyun’s heart fluttered, the words as sweet as ever. But this time, instead of feeling pure happiness, there was something else—a tinge of confusion.

Y/N wasn’t here today. She hadn’t been anywhere near the studio. So how could this letter have appeared?

Her thoughts swirled in a mix of emotions. On one hand, the letter made her smile, as it always did. But on the other hand, she felt a strange sense of disappointment. She had hoped—almost expected—that Y/N was behind these sweet words. But if Y/N wasn’t here today, It must be someone else.

Gahyun sighed, tucking the note into her pocket. She didn’t want to admit how much she had been hoping Y/N was her secret admirer. But now, the mystery feels even more complicated.

Later that evening, Gahyun sat on her bed, the letter still tucked under her pillow. She couldn’t stop thinking about it. If it wasn’t Y/N, then who? And why did the thought of it being someone else leave her feeling a little empty?

As Gahyun lay awake that night, she had no idea that the person she had been hoping for was, in fact, the one behind every letter.

Unbeknownst to Gahyun, Y/N had texted Jiu that morning, asking her for a favor. Y/N didn't want to break the streak of letters just because she was sick, so she had asked Jiu to deliver it in her place.

The days passed by in a blur, and just when Gahyun thought she could let go of the mystery, another letter appeared, this time slipped into her locker at the studio.

As she approached her locker, the familiar sight of a folded paper nestled between her practice clothes caught her eye. Her heart raced. Hadn’t she just told herself she wouldn’t get her hopes up again?

She glanced around the empty hallway, the sound of her teammates’ laughter echoing in the distance. With trembling fingers, she pulled the letter out; it felt thicker than normal, heart pounding as she unfolded it.

Dear Gahyun,

I can’t help but think about you today. Your energy and spirit always bring life to the studio, and the joy you spread. You have an incredible ability to make everyone feel valued and seen, and I am grateful to know you.

There’s something magical about the way you carry yourself, the way you turn even the most ordinary moments into something extraordinary. Every time you smile, it lights up my world, and I just want you to know how much I admire you for that. Your determination and passion inspire me daily.

I often find myself reflecting on our time together—the laughs, the shared stories, and those moments when we simply understood each other without saying a word. I cherish our friendship more than you know. I hope you realize how special you are to those around you and how deeply you impact my life.

Thank you for being the incredible person you are and keep shining your beautiful light.

Gahyun’s heart fluttered as she read the words, each line wrapping around her like a warm embrace. But this time, instead of feeling pure happiness, confusion clouded her mind. Y/N wasn’t here—she hadn’t been anywhere near the studio. How could she have written this letter?

She took a deep breath, folding the letter and tucking it into her bag. The words lingered in her mind, but they also brought a wave of uncertainty. Who could possibly know her so well? Her gaze drifted across the studio, landing on the familiar faces of her teammates, laughing and joking as they wrapped up practice. They all seemed so carefree, so different from the whirlwind of emotions swirling within her.

Finally the day came that Gahyun had been waiting for, Y/Ns inevitable return from her sickness and Gahyun found it harder to concentrate. Each glance at Y/N, looking a bit pale but still managing a bright smile—sent a jolt through her. Y/N was usually the embodiment of energy, her laughter infectious, and her presence uplifting. Now, there was a softness in her demeanor, a vulnerability that tugged at Gahyun’s heart.

During a break, Gahyun leaned against the wall, watching as Y/N chatted with Siyeon. There was something so natural about the way they interacted, but Gahyun couldn’t shake the feeling that something deeper was at play. She bit her lip, pondering the letters, the words that felt like they were meant for her but now seemed so distant.

“Hey, you okay?” JiU asked, breaking through her thoughts. Gahyun turned to find her friend’s concerned gaze fixed on her.

“Yeah, just… thinking, can I ask you something?” Gahyun replied, 

“Of course” Gahyun takes a deep breath and looks down, fidgeting with her fingers.

“Is it possible to like someone you've never met?” she asks quietly hearing the question out loud made her think that her question is stupid

JiU raised an eyebrow. “Is this about the letters you've been getting?”

Gahyun nodded, glancing back at Y/N. “I found another letter today,” she admitted quietly.

JiU’s eyes tracked Gahyun's eyes and internally smiled seeing her looking at Y/N. “Another one? What did it say?”

“It was sweet. Really sweet, it made me feel all warm inside” Gahyun said, her voice barely above a whisper. “But it just… it feels so confusing. If Y/N is sending these, how is she writing them when she’s not even here?”

JiU tilted her head, clearly intrigued. “Maybe she’s more dedicated than you think? Or perhaps she has someone helping her.”

“Someone else?” Gahyun felt her heart drop at the thought. “But what if it’s not Y/N at all?”

“Isn’t that what you want to find out?” JiU pressed, a teasing smile forming on her lips. “Maybe it’s time to confront her.”

“What if it's not y/n though?” Jiu pauses thinking about the maknae’s question. Then counters with one of her own

“Do you want it to be her?” Gahyun swallowed hard, the idea sending her heart racing. What if Y/N really was behind the letters? What would she say? Would she confess how much she admired her too? Or would it be too much?

As practice continued, Gahyun couldn’t focus. Every time Y/N laughed or caught her eye, her heart raced, a mixture of anticipation and dread bubbling within her. The weight of the letters felt heavier now, and she found herself wishing for clarity.

Finally, as practice wrapped up, Gahyun decided she couldn’t hold back any longer. She approached Y/N, who was sitting on the edge of a bench, sipping water and looking a little tired. The moment felt monumental.

“Hey, Y/N,” Gahyun started, her voice trembling slightly.

Y/N looked up, her eyes brightening. “Hey! How are you feeling?”

“Um, I'm good, but…” Gahyun took a deep breath. “I wanted to talk to you about something important.”

Y/N raised an eyebrow, curiosity dancing in her eyes. “Sure! What’s on your mind?”

Gahyun opened her mouth to speak, but suddenly all the words felt tangled in her throat. The moment hung heavy with possibility. She took another deep breath, feeling the weight of the letters in her bag, and realized this was her chance to discover the truth.

“Can we talk somewhere private?” she finally managed.

Y/N nodded, a hint of concern in her expression as she followed Gahyun to a quieter corner of the studio. As they settled into the space, Gahyun could feel the anticipation building inside her, her heart racing as she prepared to unravel the mystery that had captured her thoughts.

Gahyun fidgeted with her hands, the weight of the moment pressing down on her. Her mind raced, trying to find the right words.

“I… I’ve been getting these letters,” she began, her voice low but steady. “Sweet letters. Ones that feel really personal. And, I thought… maybe they were from you.”

Y/N’s expression shifted slightly, her smile faltering for just a second before she caught herself. “Letters?” she repeated, her voice softer now, almost hesitant. “From me?”

Gahyun nodded, pulling the latest note from her bag, unfolding it slowly. “This one… I found it today. The words… they felt like they came from someone who knows me really well. And I thought…” Her voice trailed off as she looked up into Y/N’s eyes, her heart racing. “I thought it was you.”

There was a long pause, the air thick with tension. Y/N’s eyes flickered down to the letter, scanning the words, before she finally let out a quiet sigh. 

“It is me,” Y/N admitted, her voice barely above a whisper. “I wrote them.”

Gahyun’s heart skipped a beat, a whirlwind of emotions flooding through her all at once—relief, disbelief, and an overwhelming sense of vulnerability. “You… you wrote them?” she repeated, her voice trembling slightly. “But… why? Why didn’t you just say something?”

Y/N looked down at her hands, fidgeting with the edge of her shirt. “I didn’t know how,” she confessed. “I wanted to tell you how I felt, but every time I tried, I got scared. Scared that it would change things between us. So, I wrote the letters instead. It felt easier to express everything I couldn’t say in person.”

Gahyun stood there, speechless, her mind reeling. “But… why didn’t you tell me sooner?”

Y/N’s eyes met hers, and for the first time, Gahyun saw the raw vulnerability in them. “Because I didn’t know how you felt and I shouldn't have these feelings, I'm a staff member for god's sake but I couldn’t keep it to myself any longer. So I wrote. And I hoped that maybe, just maybe, you’d feel the same way.”

Gahyun’s heart raced as she processed Y/N’s words. All this time, the letters had been from her—Y/N, the person she admired and cared for more than she’d allowed herself to admit. She swallowed hard, her emotions bubbling to the surface.

“I didn’t know what to think,” Gahyun said softly. “I wanted it to be you, but I was scared, too. I didn’t know if I was just imagining things.”

Y/N gave a small, tentative smile. “You weren’t imagining things.”

Gahyun felt her chest tighten as a wave of emotion surged through her. She took a deep breath, her hands trembling slightly. “I don’t know what to say,” she admitted. “But I do know that I’ve always felt something special with you. I just… I didn’t realize it until now.”

Y/N’s eyes softened, the tension between them easing as they stood there, both unsure of what came next but knowing that something had shifted.

“You don’t have to say anything right now,” Y/N whispered, her voice gentle. “I just wanted you to know how I feel. And whatever happens… I’m okay with it.”

For a moment, Gahyun was silent, her heart racing as she looked into Y/N’s eyes, seeing the vulnerability and hope that mirrored her own. Then, with a shaky breath, she took a step closer.

“I think… I feel the same way,” Gahyun said softly, her voice trembling but sincere. “I’m scared, too. But I think we should figure it out. Together.”

Y/N’s eyes brightened, her smile returning as she took Gahyun’s hand, the warmth of the gesture filling the space between them. “I’d like that.”

In that quiet corner of the studio, with the mystery of the letters finally unraveled, Gahyun realized that while she hadn’t been sure before, the truth felt right. Y/N had always been the one she wanted to be closer to. And now, they both had the chance to explore what that meant.

Present Day

Gahyun smiled fondly as the memory washed over her. That letter had been the first of many, each one more heartfelt than the last. At the time, she hadn’t known it was Y/N, hadn’t realized that her now best friend and the person she had grown closest to was the one behind all the kind words. It had taken months—months of secret notes, stolen glances, and lingering questions—before she finally figured it out. And even longer before she had the courage to confront Y/N about it.

She chuckled to herself, remembering how nervous she had been back then. How every word, every interaction had been charged with the unspoken emotions swirling between them.

“Found something interesting?” Y/N’s voice pulled her back to the present.

Gahyun looked up to see Y/N leaning against the doorframe, a soft smile on her lips. “Just some old letters,” Gahyun replied, holding them up.

Y/N’s smile grew wider, a playful glint in her eyes. “Ah, those. I remember them well. Took me forever to work up the courage to write that first one.”

Gahyun’s heart warmed at the confession. “I still can’t believe it was you the whole time. I was going crazy trying to figure it out.”

Here's an extended version of that passage, adding more depth to the moment:

Y/N came over, sitting behind her on the floor. “And look where it brought us,” she said softly, wrapping an arm around Gahyun’s torso and placing a light, affectionate peck on her cheek from behind. The warmth of her touch felt like a quiet reassurance.

Gahyun leaned into her, the letters now resting in her lap like forgotten relics. “Yeah,” she murmured, her voice barely above a whisper. “Look where it brought us.”

The idol turned her head slightly, her eyes meeting Y/N’s. There was something unspoken between them—something deeper than words could convey. Their gazes locked, and time seemed to halt. Slowly, they began to lean in

Their lips met in a gentle kiss, a fleeting moment that carried the weight of everything they have endured to get here. It was quick, yet tender, leaving them both breathless as they pulled away. Gahyun’s heart raced, her mind spinning as she tried to process the rush of emotions, but all that mattered was the closeness they shared.

As they lingered there, Y/N’s forehead resting lightly against Gahyun’s, a soft sigh escaped her. “I never expected us to end up here,” she whispered, her fingers lightly tracing the lines of Gahyun’s arm.

“Neither did I,” Gahyun admitted, her voice tinged with vulnerability. “But I wouldn't trade this for anything in the world., I love you Y/N"

Y/n smiles and gives her cheek another kiss "I love you too Gahyun"

The letters had been the beginning of something beautiful—a quiet, slow-burning love that had grown over the years. Now, sitting in their new home together, Gahyun realized that their journey had been just as much about the little moments—the unsaid things, the secret notes—as it had been about the big milestones.