#freakyfridayfic

pairing:

IDOL!Hyunjin × AFAB!FANGIRL!Reader x LEADER!Chan

synopsis: when one coincidental wish at the exact same moment in time causes two people from across the world to unknowingly switch bodies.. how crazy would it be to wake up in someone else’s shoes? Literally.

cw: switched bodies, explained female anatomy, angst, anxiety, language, displacement, crying, humor. IDK??

A/N: This started as a silly question I saw on threads where STAYS were asking “what’s the first thing you would do if you woke up in your biases body?” So of course I was telling my friends but then I was like.. what if i wrote a story about this because it’s so freaking funny to think about it. So here’s PART 1 of the story. Think … Freaky Friday but it just happens to be your ult bias 🫠

WC: 3k

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Loud pounding on your door slowly stirred you awake, but the deep voice on the other side is what jolted you upright.

“HYUNJIN-AH! 일어나, 리허설이 있어!!”

You rub the sleep from your face, trying to process the words. Did he just say Hyunjin? And Korean?? You must still be dreaming. Half awake, you stretch and flop backwards onto the soft, ridiculously expansive bed.

You roll onto your stomach and freeze. Where… the hell were your tits?

Terror tears through you. You shoot up onto your knees and run your hands over where they should be. Instead, your palms hit firm, tight muscle beneath a warm hoodie. At this realization you whip your head around the room, heart pounding. Your blood runs cold as you recognize bits and pieces from countless livestreams and selfies posted by the very man you bias.

You shakily slide off the bed, steadying yourself on wobbly legs as you see the world around you in a whole new light… or well height. Somehow you manage to find the bathroom, and you nearly scream when the reflection staring back at you is a beautiful, sculpted man moving exactly as you do.

You gasp and mumble under your breath while running your hands through his… your? hair and down his skin.

“What the fuck… what the fuck… what the fuck.” Even your English comes out tinted with his accent.

A knock at the bedroom door makes you jump, and you scramble to grab your… well, Hyunjin’s phone before locking yourself inside the bathroom.

Changbin’s voice fills the room, playful but honest. “Jin-ahhhh, 너한테 무슨 문제가 있는 거야? 우리는 늦을 거야!”

He’s whining dramatically, and you only catch pieces of what he’s saying… something about you? Something about being late? Practicing? He asked a question? What the hell is happening.

You unlock the phone, swiping through his apps, all in Korean, trying to find messages. Your thumb hesitates. Who the hell are am I going to call? Myself? My mom? She wouldn’t believe me. I sound like a twenty-five-year-old Korean man. Call my sister? No, she’d pass out.

Your mind keeps racing until a horrifying realization crashes through you. If you’re stuck in Hyunjin’s body… is he stuck in yours?

You scramble into the clock app and type in your city. Relief nearly knocks you over when you see that he, your body, should technically still be asleep.

After a few shaky breaths, you text Changbin (because at least you know the boys’ names written in Korean) and tell him you’re not feeling well. Thank God for Google Translate. He texts back a flood of questions, and you immediately scroll for Chan’s name.

You hit call.

He answers on the third ring. Before he can get a word out, you cut him off with a shaky breath.

“Chan, I know none of this makes sense, but I need you to come to the dorm. By yourself. It’s an emergency. Don’t tell the company. Don’t tell the guys. Just you. As soon as possible.”

Chan tries to interrupt, gentle and steady. “Woah woah woah. Take a breath, Hyune. First off… are you hurt?”

You shake your head even though he can’t see it. “Well, no, not technically, but it’s easier to explain in person.”

Chan gives a soft, disbelieving laugh. “Mate, you’re kinda freaking me out. This is the most English you’ve ever spoken to me.”

“Well yes, Chris! I’ll explain that!” you whine as anxiety builds in your chest. Tears prick at your, technically his, eyes. “Can you please just come over?”

The shake in his voice is clear, and after a moment he responds. “Okay. I’ll be over soon. Just stay put.”

Half an hour later, Chan arrives at the dorm. You hear muffled voices between him and Changbin from behind the locked bathroom door. Eventually the footsteps get closer, and Chan knocks gently.

“Hyune… can you open the door? It’s just me.”

Still shaking, you force yourself up on unfamiliar legs and unlock the door. You don’t stay close. Instead, you quickly move to the far corner of the room, back against the wall, sliding down until you hit the floor.

When Chan steps inside, his eyes sweep the room until they land on your, Hyunjin’s, form. His eyes widen at the sight of you visibly trembling. He approaches slowly, lowering himself into a crouch in front of you.

Feeling his gaze on you, you look up. And hell, this is absolutely not the time to fangirl, but God, he is even hotter in person.

A soft, involuntary “fuck” slips out of your mouth when you see him this close. Your cheeks burn and you mumble, “Sorry.”

He lets out a confused little laugh, still scanning Hyunjin’s body for any sign of injury.

“Hyune… what the hell is happening?”

You’re shaking so hard your teeth almost chatter as you attempt to explain. The words tumble out in a panicked rush.

“I’m not Hyunjin. I woke up this morning in… his… this body, and Changbin was yelling things at me in Korean and I didn’t understand anything and I don’t have boobs anymore and I’m freaking out because if I’m in his body then he’s probably in mine which is halfway across the world but at least he’s asleep right now and hasn’t freaked out yet but I don’t know how long that will last and I have no idea—”

Chan’s brows knit so tightly they nearly touch as he cuts in, voice low and confused.

“I’m sorry, what? What are you talking about?”

Your watery eyes snap up to his. “Chris… my name is Y/N. I’m a twenty-two-year-old woman from the States. I go to college. I have, well, I have boobs.” you frantically grab at your now.. flat chest and whine. “well usually I do? and this morning I woke up in Hyunjin’s body on the other side of the world in Korea with Changbin spitting Korean at me, and as much as I love you guys and I’m trying to learn Korean on Duolingo and I can repeat some words from your songs, I AM NOT FLUENT. I had no idea what he was saying and I don’t know how any of this happened.”

Your breathing stutters. Chan is silent for a moment, staring at you, jaw tight.

Then he speaks, slow and careful, like he’s trying to make sense of every word.

“…So you’re saying you’re not Hyunjin. You’re saying you woke up this morning in his body.” His eyes scan you again, searching for signs of a prank or head injury. “And this isn’t some… method acting thing he’s doing? Or a panic attack? You’re actually saying you’re someone else entirely.”

You nod aggressively, tears slipping out despite your efforts.

Chan scrubs a hand over his face and exhales shakily. “Okay. Okay, alright. Just… give me a second to process.”

He shifts to sit beside you but keeps his voice soft so you don’t spiral further.

“Y/N… if what you’re saying is real, then I need to figure out a few things.” His tone goes leader-mode, calm but firm. “First… do you remember anything weird from yesterday? Anything Hyunjin might have touched that you also touched? A call? A message? Did anything feel strange before you fell asleep?”

Your breath catches as you think, and Chan watches gently.

“I—well… no Chris, I’m a fan of you guys… I wouldn’t have his phone number. What a dream that would be. I mean I have his bubble, well yours too, but no I just went to bed like normal last night.” Your eyes widen in realization as you remember the posters plastered all over your room and you internally groan.

“I- I will come back to that.. but second… can you prove you’re not him? Not just by saying things. I mean something only you would know or something Hyunjin never would.”

He pauses, still studying you closely.

“Like what Chris??” You ask biwildered.

Chan inhales slowly, thinking. He shifts back on his heels, eyes narrowing—not in suspicion, but in problem-solving mode.

“I don’t know,” he admits quietly. “That’s the hard part. If he were pretending to be someone else, Hyunjin would shut it down fast once he realized how freaked out I am. If you.. sorry him, were having a breakdown, I’d know the signs. But this… I need something that rules those out.”

He looks around the room as if the answer might be sitting on the counter.

“Maybe… tell me things about Hyunjin’s life that you shouldn’t know…. wait but that doesn’t help if you’ve watched our content. That’s too easy.”

His gaze flicks back to you. “Or something personal about yourself that Hyunjin couldn’t possibly know. Something private. Something you’ve never put online.”

You open your mouth, then close it, and he sees the hesitation.

“Or,” he continues softly, “something physical. Something you can’t fake. A reaction he wouldn’t have. A skill he doesn’t know. A memory he couldn’t access.”

He watches you swallow hard.

“But it has to be something clear. Something that proves your brain isn’t his.”

Chan rubs the back of his neck nervously, an anxious habit you’ve seen a thousand times in videos.

“Honestly… even the way you’re speaking is weird. Hyunjin wouldn’t talk to me like this. Not in this tone. Not rambling in full English. Not crying like this either.” He motions vaguely at you. “It’s wrong. It’s different. I feel it.”

His voice lowers.

“But I need something undeniable so I can help you without sounding insane.”

You whisper, “Chris, I don’t even know what counts.”

He leans in a little, gentler this time. “Start with what makes you, you. Think about something Hyunjin wouldn’t even have the context for. A childhood story. An injury. A scar. A full memory. A person he’s never met.”

He waits, watching you like he’s bracing himself for whatever comes next.

Your eyes dart around the room as you dig through your thoughts. You let out a shaky sigh.

“I don’t know, Chris. I mean… he is my bias, so we’re pretty similar in some ways, but… I’m from (y/city). I grew up there.” You blink rapidly, trying to remember anything that sounds like proof. “I could tell you my phone number. Or— I have a sister. She’s an I.N and Minho bias.”

Chan winces playfully at that, even in the middle of all this, and nods for you to go on.

“And… I’m a graphic designer. I’m about to graduate college with my bachelor’s?”

Chan’s eyebrows lift, but he still looks unsure.

He shifts a little closer, lowering his voice. “Okay. Those are things, but… Hyunjin could technically know that if someone told him. I need more. Something specific about you.”

He takes a slow breath, thinking, then begins gently, almost like an interview.

“Y/N… what was your room like growing up?”

The answer spills out before you can stop it. “Light blue walls with stupid mermaid decals I refused to take down. I had this white dresser that squeaked every time I opened it. And this old ceiling fan that rattles so loud you can hear it from outside the room.”

Chan blinks. Hard. “Okay… that’s oddly detailed.”

You nod, eager, desperate. “You want more? I can give more.”

He swallows and continues.

“Alright. When you were little… what did you want to be?”

“A marine biologist,” you say immediately. “I was obsessed with dolphins. Full binder of printed-out dolphin facts like a weirdo. Ever seen Dolphin Tale? Yeah that was my shit”

The corner of Chan’s mouth twitches. He looks shaken, but intrigued.

“Okay… what about your first pet?”

“A hamster. Her name was Minnie because I was unoriginal and she was mouselike. She died a tragic death. Please don’t ask.” You rub Hyunjin’s temples. Breathing in and out at his silence. “Chris, I’m telling you, none of that is Hyunjin’s life.”

Chan exhales a low breath. You can see him processing, checking every detail against what he knows about Hyunjin.

Then he asks a question you didn’t expect, voice quiet.

“What was your worst subject in school?”

“Math,” you groan instantly. “Like… crying at the kitchen table bad.”

Chan huffs a tiny, startled laugh. “Yeah… Hyunjin wouldn’t admit that even if it were true and plus he handles my finances so.”

Some of the tension drains from his shoulders as he watches you talk. You can almost see the moment when things begin connecting for him. He leans back slightly, eyes narrowing in awe.

“You’re not answering like Hyunjin at all. You’re not thinking like him. Your memories aren’t his. And the way you’re speaking English… he can’t do that without stopping to think.”

He looks at you for a long second, the reality settling in his expression.

Then, softly:

“Y/N… I think you’re telling the truth.”

You nod heavily, shoulders sinking as another sigh escapes you.

“I didn’t want to come to this, but… I could pull up my Instagram. I have my password memorized. I can literally log in right now.” You rub your face with Hyunjin’s hands. “I could even tell you what I recently commented. Or what I sent you on Bubble.”

Your eyes flick up to his, suddenly curious despite your panic.

“Can you search us? I’ve always wondered that.”

Chan blinks, caught off guard. “Search you?” His voice cracks on the ‘you’ and he clears his throat. “Uh… no. Not the way you’re thinking. The app’s set up so we don’t… stalk people.” He winces at the wording. “I mean, we can see our messages with you, but we can’t go into your page or look you up. It’s locked to just the paid chat. Privacy stuff.”

“Oh.” You nod, disappointed but still spiraling. “Well… I can still show you my instagram account. I know the login, I know my drafts, my saved posts. Hyunjin wouldn’t know any of that. And I can show you dms with my mom, or my sister, or the most embarrassing photo I have of myself when I was twelve. He definitely wouldn’t know that password.”

Chan’s expression softens, the disbelief fading more and more with each sentence.

“Alright,” he says gently. “Okay. Let me see.”

You swallow and tap the phone awake, your—Hyunjin’s—hands trembling as you open the Instagram app.

Chan watches the screen carefully, tense but focused.

“Type it,” he encourages, voice low and steady. “If you know it by heart, that’s something Hyunjin can’t fake.”

You type your username. Then your password. Chan leans in when the account loads instantly, no saved login, no auto-fill.

Your profile picture. Your bio. Your feed. Your face.

His breath actually catches.

“Holy… wow,” he whispers, staring at it, gently taking the phone and zooming in curiously. “That’s you?”

You nod, throat tight. “Chris, I told you.”

He doesn’t speak at first. His eyes scan through your Instagram, then flick back to your—Hyunjin’s—face. His expression shifts through overwhelmed, worried, stunned… and a touch amused.

Finally, just above a whisper, he goes:

“Y/N… you’re kinda cute. Did you go to our Atlanta concert?”

The heat that floods Hyunjin’s cheeks is immediate and humiliating. You gently tug the phone back toward your chest.

“I knew you were a flirt. Focus. And yes… yes, I did. Next time I’m getting closer seats. I could barely hear you over everyone screaming their lungs out.” You shrug, trying to ignore how flustered you sound. “Great concert though. First K-pop one too.”

A soft, disbelieving laugh slips out of him. He shakes his head like he still can’t quite accept any of this.

You swallow hard as your voice cracks a little.

“Chris… Hyunjin is in my bed, in America. In my body. Alone. Like… literally alone. I live on campus, I have one roommate, and she’s barely home. My closest family member is two hours away. The airport’s like the same distance.”

That snaps something in him. His gaze darts back to you, full of real fear now.

“Okay. We need to figure out how to contact him and fast.”

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BAHHAH i know that probably wasn’t as funny as you thought it would be, but it’s more humorous than what I usually write so hopefully you like it so far!

As always feel free to support me if you'd like to..

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Let me know if you want to be added to my taglist with love, Senna<3

(PART TWO HERE!) (FINALE!)

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