Archive of Our Own

The subway rattled beneath Jaehyun’s feet as he leaned against the closed doors, his backpack hanging from one shoulder and his entire body threatening to shut down on him.

It had been a long day. No, a brutal day. His music production workshop had started at nine in the morning and somehow stretched into what felt like several lifetimes. By the end of it, his professor had made them rebuild the same track four different times because “the emotional intention of the snare was unclear,” which was the sort of sentence that only made sense to music majors and even then only under conditions of extreme sleep deprivation. Jaehyun was running on an iced americano, a triangle kimbap, and pure resentment.

His headphones covered his ears, the bright, infectious beat of Catch Catch by YENA pumping just loudly enough to keep him awake during the ride home. He mouthed along absentmindedly, tapping his fingers against his thigh in time with the chorus while the train sped through the tunnels beneath the city.

Around him, the evening commute blurred into familiar shapes. Students slumped against poles, office workers stared blankly at their phones, and one exhausted mother tried to keep her toddler from licking the window. Jaehyun barely noticed any of it. His eyes were half-lidded, his shoulders heavy, and his brain had reached that strange state of exhaustion where every thought moved through molasses. He was just counting the stops until he could get home, shower, and collapse face-first onto his bed.

The train slowed at the next station, the familiar chime echoing through the carriage as the doors slid open. Someone stepped inside. At first, Jaehyun only registered movement in the corner of his eye: a tall young man in an oversized cream sweater and dark slacks, a tote bag slung casually over one shoulder. But when Jaehyun glanced up properly, his breath caught. Soft brown hair fell across the stranger’s forehead, framing features so striking that, for one suspended moment, Jaehyun forgot how to breathe.

He was pretty. Very, very pretty. Dangerously pretty.

The stranger settled into the empty seat by the window across from him, crossing one leg over the other with the kind of effortless grace that should have been illegal. He pulled a book from his bag, opened it, and began to read.

Jaehyun forgot how to blink.

The world, which moments ago had consisted of bass lines and fatigue, narrowed to a single point. The boy by the window. The quiet curve of his profile. Soft eyes moving steadily across the page. A straight, elegant nose. Lips so perfectly shaped they looked as though they existed for the sole purpose of undoing Jaehyun completely.

Jaehyun stared. Not in a creepy way. Hopefully. In an appreciative way. In a deeply respectful way. In a way that suggested he might write songs about this stranger for the next ten years. His music kept playing in his ears, but he could no longer hear it over the pounding of his own heartbeat.

Who was he?

A university student, probably. Maybe an art major. Or literature. He had the kind of face usually reserved for poetry collections and devastating coming-of-age films.

The stranger turned a page, a loose strand of hair slipping over his eyes. He tucked it back with slender fingers. Jaehyun nearly dropped dead on the spot.

He had seen attractive people before. He lived in Seoul. Attractive people were as common as convenience stores and coffee shops. But this was different. This was not simple admiration. This was a celestial event. A once-in-a-lifetime alignment of features so devastatingly perfect that Jaehyun felt personally attacked by the universe.

As if sensing the weight of his gaze, the stranger lifted his head. Their eyes met. Just for a second—one brief second. But it was enough. Warmth bloomed in Jaehyun’s chest, spreading through him like sunlight pouring through a window. His breath caught. The stranger blinked, almost surprised, and then—very slightly—smiled. Just the smallest upward curve of his lips. Still, it hit Jaehyun with the force of a train. His ears burned, fingers tightening around the strap of his backpack. The stranger held Jaehyun’s gaze for one breathless second longer. Then, as if he hadn’t just altered the chemical composition of another human being, he lowered his eyes and returned to his book.

That was it.

Jaehyun swallowed hard. Okay. Fine. That was… fine. People saw absurdly gorgeous strangers on the subway every day and survived. There was no reason he couldn’t do the same.

He forced himself to look away and fixed his eyes determinedly on the route map above the doors. He lasted approximately four seconds. Then his gaze drifted back. The stranger was still reading, one hand resting lightly against the open pages. The setting sun filtering through the train window painted his profile in warm gold, softening the line of his jaw and catching in his hair like a halo. Jaehyun’s heart did a complicated maneuver that should probably have required medical supervision.

He looked away again. Then back. Then away. Then back. Over the next several stops, Jaehyun became a thief.

A thief of glances.

A collector of tiny details. The slight furrow between the stranger’s brows whenever he concentrated. The way his lips parted just a little as he read. The delicate turn of his wrist when he flipped a page. The quiet, self-contained air around him, as though he carried his own little world and had no idea how breathtaking it looked from the outside.

The song in Jaehyun’s headphones looped endlessly. He didn’t notice. The announcements echoed through the carriage. He barely heard them. All he knew was that every few seconds he found himself looking up, helplessly drawn back to the boy by the window. Jaehyun was, however, aware with increasing dread that the number of stops remaining between him and the probable love of his life was dwindling at an alarming rate.

At the seventh stop, the stranger slid a bookmark between the pages of his novel and closed it. Jaehyun’s stomach dropped.

No, no, no. Too soon.

The boy rose gracefully from his seat, slinging his tote bag over one shoulder. For one wild, irrational moment, Jaehyun considered following him.

He could do it. He could pull off his headphones, step forward, and say something charming and memorable like:

“Hi.”

Or perhaps:

“Uh.”

Or, if he was feeling especially bold:

“You’re very pretty and I think the universe may have arranged this commute specifically for us.”

Instead, he stood frozen in place, fingers locked around his backpack strap. The train doors opened with a soft chime and the stranger stepped onto the platform. Then, just before the doors closed, he glanced back.

Their eyes met again, one final time.

Then he was gone. The doors slid shut, the train lurching forward. Jaehyun remained where he was, staring at his own reflection in the darkened glass. For a moment, the world felt strangely hollow. As though something essential had stepped off the train along with the beautiful stranger and his book and his soft smile. A dull ache spread through Jaehyun’s chest.

“Goodbye, my soulmate,” he murmured to the empty air.

The woman standing beside him shifted a discreet step away.

He leaned his forehead against the cool subway door, listening as Catch Catch played again softly in his ears and mourning the greatest love story that had never begun.

By the time Jaehyun reached his apartment building, he had already replayed the subway ride approximately forty-seven times. Possibly more. He had lost count somewhere around the moment the stranger tucked a strand of hair behind his ear.

Jaehyun climbed the stairs to the third floor in a daze, his headphones now hanging around his neck, Catch Catch long since ended. The silence felt oppressive after the soundtrack his brain had provided for what he was increasingly convinced had been the most romantic seven stops in public transportation history.

He unlocked the door and stepped inside. His apartment greeted him with the same quiet stillness it always did. It was small. Tiny, really. A narrow kitchenette pressed against one wall, a worn sofa facing a television he mostly used as an oversized computer monitor, and a bedroom barely large enough to fit his bed, desk, and overflowing laundry basket. The bathroom was so cramped that if he dropped the soap, he practically had to step into the hallway to pick it up.

Usually, Jaehyun found the space comforting. Tonight, it felt unbearably empty. As if the loneliness of it had been magnified. As if someone had taken all the warmth with them when they stepped off the subway seven stops ago. Jaehyun let his backpack slide to the floor with a soft thud. He stood in the middle of the apartment and sighed—a long, tragic, deeply theatrical sigh.

“Goodbye, beautiful stranger,” he murmured to no one. “I didn’t even learn your name.”

Another sigh. This one somehow even sadder.

He shuffled into his bedroom, still replaying every detail in his mind, desperate to preserve them before reality inevitably sanded them down. The soft brown hair, the elegant hands, the tiny smile… The eyes. God, those eyes.

Jaehyun pressed a hand to his chest. It ached. He groaned and flopped backward onto his bed for several seconds, staring at the ceiling. This was ridiculous. He was twenty-two years old. An adult. A rational human being. He should not be mourning a man he had exchanged exactly two glances with.

And yet, here we are.

The shower, he decided, would help. Water fixed everything. Or at the very least, it gave him a private place to pine. With another world-weary sigh, Jaehyun sat up and began peeling off his clothes. Socks first. His hoodie. Finally, he hooked his fingers under the hem of his T-shirt and tugged it over his head. As he turned to toss it onto the bed, his eyes caught his reflection in the full-length mirror leaning against the wall.

Jaehyun froze. For one long, disbelieving second, his brain refused to process what he was seeing.

There was a hole in the center of his chest.

A clean, perfect, heart-shaped hole. Not a wound, not bloody, just empty space. Through it, Jaehyun could see the pale blue wall of his bedroom and the corner of the poster above his desk. He blinked once… twice, then lifted a trembling hand and waved it behind his back. He watched his fingers pass through the opening in the mirror.

His mouth fell open. “What,” he whispered.

The room remained unhelpfully silent. Jaehyun looked down at his chest, back at the mirror, down again. The hole was still there. Shaped exactly like the sort of cartoon heart people doodled in notebooks.

His heart was missing. His actual, literal heart.

Jaehyun drew in a breath. And screamed.

He let out a sharp, high-pitched, soul-rending shriek that echoed through the apartment building and startled at least three neighbors, two cats, and the elderly woman living on the floor below.

Somewhere in the hallway, a voice shouted, “Are you okay?”

Jaehyun clutched the edges of the mirror with both hands, eyes wide with horror.

“I LOST MY HEART!” he wailed.

Jaehyun spent exactly four minutes in his apartment after discovering the heart-shaped hole in his chest. Three of those minutes were dedicated to screaming. The fourth was spent throwing his T-shirt back on, jamming his feet into the wrong shoes, and sprinting down the street like a man being pursued by death itself.

There was only one place to go. Only two people capable of thinking rationally on his behalf and helping him at ten-thirty at night. Or, at the very least, panic with him.

Jaehyun pounded on the door to Riwoo’s and Leehan’s apartment with the desperation of someone whose vital organs were no longer where they were supposed to be.

“Open up!”

Knock knock knock knock.

“Emergency!”

Knock knock knock knock.

“I’m dying!”

There was a muffled thud from inside, followed by several seconds of suspicious silence. Then the lock clicked and the door swung open to reveal Leehan. He was wearing pale blue pajamas covered in tiny fish, a mint-green sheet mask clung to his face, giving him the unsettling appearance of an extremely elegant swamp creature. His dark hair was twisted into a neat bun on top of his head.

Leehan regarded Jaehyun with the calm expression of someone who had known him long enough to understand that the words emergency and I’m dying did not always correspond to objective reality.

“It’s a bit late,” he said, glancing at the clock on the wall.

“I know.” Jaehyun brushed past him.

Leehan closed the door with a resigned sigh and followed him inside.

As always, one step through the door and Jaehyun was reminded that Riwoo’s family owned things like investments. The place was enormous. The living room alone was bigger than Jaehyun’s entire apartment. Warm lighting reflected off polished wood floors, tasteful art hung on the walls, and every decorative object looked as though it had been selected by someone with both impeccable taste and access to a family credit card with no visible limit.

Riwoo was stretched across their massive couch in ivory satin pajamas, a fluffy headband holding his hair back and gold hydrogel eye patches glimmering beneath his eyes. A drama was paused on the television, frozen on a close-up of a crying actor.

If Riwoo was surprised to see Jaehyun barging into his home like a hurricane, he didn’t show it. He simply lifted his head and said,

“Are we having a sleepover?”

Jaehyun stopped in the middle of the living room and turned to face them both. His eyes were wild, breathing uneven. His hair looked like he had been electrocuted.

“I have terrible news,” he announced.

Riwoo sat up, the eye patches nearly sliding off his face, while Leehan folded his arms and fixed Jaehyun with a suddenly attentive stare. Jaehyun looked from one to the other, drew in a deep, shuddering breath, and prepared to deliver the worst news of his young life.

“I LOST MY HEART.”

Riwoo blinked. Leehan tilted his head. Before either of them could say anything, Jaehyun grabbed the hem of his T-shirt and yanked it up to his chest. For one suspended second, the apartment fell silent.

Riwoo stared. Leehan leaned closer. Both of them looked directly through the perfectly heart-shaped hole in the center of Jaehyun’s chest. Then Riwoo screamed—a loud, piercing scream that rivaled Jaehyun’s earlier performance.

“Oh my God!” He scrambled backward across the couch, nearly tangling himself in the blanket. “OH MY GOD.”

Leehan, by contrast, remained eerily composed. He stepped forward, narrowed his eyes, and—before Jaehyun could object—extended one finger through the opening.

Jaehyun yelped.

Leehan wiggled his finger thoughtfully, then withdrew his hand. “That’s interesting,” he said.

Riwoo clutched a pillow to his chest. “Interesting?” he repeated. “His heart is gone!”

Jaehyun pointed at both of them, voice climbing an octave.

“I saw a beautiful man on the subway and now I’m missing an internal organ!”

Riwoo’s eyes widened as understanding dawned, while the corners of Leehan’s lips curved in slow, unmistakable amusement. A brief silence settled over the room before Riwoo lowered the pillow to his lap and said,

“Tell us everything.”

Park Sungho liked to think of himself as a rational person. He kept color-coded notes for his classes, he separated his laundry properly, he compared prices before buying shampoo. And, most importantly, he did not believe in things like magic, ghosts or curses. Which was why, the moment he stepped out of the subway station and heard a suspicious boing beside his ear, his first thought was that he was more tired than he realized. Sungho adjusted the strap of his tote bag and kept walking.

The evening air was cool, carrying the familiar mix of traffic, food stalls, and the faint scent of rain lingering on the pavement. His classes had run late, and all he wanted was to get home, finish the chapter he’d started on the train, and go to bed.

Boing.

That sound came again. Small and bouncy and too close. Sungho slowed, then turned, and stopped dead on the sidewalk. Hovering at shoulder height beside him was a tiny pink heart. An actual heart. Round and plush-looking, about the size of two fists pressed together. Bubblegum pink, with glossy little eyes and a perpetual blush across its chubby cheeks. It bobbed gently in the air. The moment Sungho looked at it, the heart gave an enthusiastic wiggle.

Sungho stared. The heart wiggled harder. Sungho blinked. The heart spun in a delighted circle, releasing a few sparkles that vanished almost immediately. For several seconds, neither of them moved. Then Sungho narrowed his eyes.

“I’m hallucinating,” he said aloud.

The heart tilted to one side, as if mildly offended.

Sungho nodded to himself. Yes, that had to be it. Exhaustion. Too much reading, not enough sleep. Maybe low blood sugar? He turned and resumed walking.

Boing.

Sungho froze. Very slowly, he glanced over his shoulder. The heart was still there. Floating. Following him. As if this were the most natural arrangement in the world.

Sungho walked faster. The heart bobbed faster.

He lengthened his stride. The heart zipped to keep pace.

Sungho broke into a run. The heart shot after him with a series of frantic little boing boing boings, like an excited puppy determined not to be left behind.

“Nope,” Sungho muttered, sprinting the final block to his apartment building. “Absolutely not.”

He unlocked the front door, slipped inside, and tried to close it as quickly as possible. The heart squeezed through the narrowing gap with an indignant bounce.

“How did you—” Sungho stared at it in disbelief. “You cannot come in.”

The heart ignored him. It floated calmly down the hallway, turned toward his bedroom as though it knew the layout, and drifted inside. Sungho followed, too stunned to do anything else. The little pink creature circled once above his bed. Then, with a satisfied wiggle, it settled onto his pillow.

Sungho stood in the doorway, tote still hanging from one shoulder, and tried to process the fact that a sentient floating heart had apparently adopted him. The heart gave a tiny contented sigh, then snuggled into his pillowcase.

“Okay,” he said to the empty room, because what else was there to say?

The heart lifted one sleepy little eye and gave a happy wiggle. Sungho rubbed both hands over his face. He remained standing in the doorway for a long moment, staring at the tiny pink intruder nestled in the center of his pillow. The heart stared back with his two glossy little sparkly eyes.

Sungho closed the bedroom door behind him and set his bag on the floor with deliberate care, as if moving too quickly might shatter the fragile logic holding reality together. He was exhausted. That had to be the explanation. Between classes and his shifts at work, he had barely had time to breathe all week. He was overtired and sleep-deprived, and quite possibly suffering from some rare, highly specific hallucination in which cute floating organs developed an unhealthy attachment to him. That seemed plausible. More plausible, at least, than the alternative.

The heart bounced once on his pillow.

Boing.

A few tiny sparkles drifted into the air before disappearing.

Sungho pinched the bridge of his nose. When he opened his eyes again, the heart was still there. Pink, round, looking at him with unconcealed excitement. Very slowly, Sungho crossed the room and sat on the edge of his bed. The mattress dipped. The heart let out a delighted little wiggle so vigorous that it nearly tipped itself over. Sungho folded his hands in his lap and the heart scooted closer. For a moment, they simply regarded one another.

Sungho had always considered himself good under pressure. He got excellent grades, never missed deadlines, and once remained perfectly calm when a classmate accidentally set a kitchen towel on fire during a cooking elective. And yet, faced with a floating pink heart in his bedroom, he found himself completely at a loss.

He cleared his throat. “What are you?”

The heart bounced.

“Why are you following me?”

Another bounce, this one accompanied by a burst of glittering sparkles. The little creature drifted forward until it was hovering directly in front of his face. Before Sungho could react, it pressed its soft, warm body against his cheek in what could only be described as an affectionate nuzzle.

Sungho froze.

The heart gave a happy tremble and rubbed against him again. It was... surprisingly cute. Which was dangerous. Sungho leaned back and stared at the ceiling.

“I’m losing my mind.”

The heart floated patiently at his shoulder, as if willing to wait until he came to terms with this. After several seconds, Sungho sat up and looked at it with as much firmness as he could manage.

“Listen,” he said. “Whatever you are, you can’t stay here.”

The effect was immediate. The heart stopped moving, its sparkles vanishing as its bright pink color seemed to dim. Slowly, it drifted backward until it hovered a few inches away, small and sad. If an animated heart could look hurt, this one did.

Sungho felt something in his chest tighten. “Oh…” he said softly.

The heart lowered itself onto the pillow and turned away from him quietly. As though it had expected rejection and was trying very hard not to make a fuss about it. Sungho pressed his lips together. This was absurd. Utterly absurd. He was a sensible adult. He should not be feeling guilty because he had upset a very emotional floating heart. And yet the sight of the tiny creature sitting dejectedly on his pillow made his stomach twist.

Sungho sighed. A long, resigned sigh.

“Fine.”

The heart perked up instantly, its color brightening. It spun in place so fast that sparkles burst around the room like confetti.

Sungho raised a finger. “But only for tonight.”

The heart launched itself against his cheek with such enthusiasm that he nearly fell backward onto the mattress. Warmth spread across Sungho skin. He couldn’t help the small, helpless smile tugging at his lips. He reached out hesitantly and cupped the little thing in both hands. It fit perfectly in his palms, soft and pleasantly warm, humming with quiet contentment.

Sungho shook his head. “I cannot believe I’m letting a floating heart sleep in my bed.”

The heart nestled deeper into his hands. Comfy.

By lunchtime the next day, Sungho had accepted two things. First, the floating heart was real. Second, it had no intention of leaving him.

The little pink creature had followed him through his entire morning routine, hovered patiently outside the curtain while he showered, perched on the edge of the sink while he brushed his teeth, and ridden to campus tucked inside the hood of his sweatshirt like a very affectionate stowaway.

Now it floated at shoulder height as Sungho crossed the university courtyard toward the cafeteria. Students stared, a few did double takes. One girl walked directly into a bench because she was too busy pointing at the heart to watch where she was going. Sungho pretended not to notice.

At a table near the windows, Taesan and Woonhak were halfway through lunch. The older was scrolling through his phone while eating kimbap with the sort of detached elegance that made it seem like he was posing for a magazine spread. Woonhak, by contrast, was devouring a bulgogi sandwich with alarming enthusiasm, punctuating every particularly satisfying bite with appreciative sound effects.

Both of them looked up as Sungho approached and both of them froze. Woonhak’s sandwich slipped from his hand. Taesan lowered his phone. The pink heart hovered beside Sungho and gave them a cheerful wiggle. For a long moment, no one spoke. Then Taesan leaned back in his chair, folded his arms, and said, perfectly deadpan:

“I can’t believe you stole someone’s heart.”

“I did not steal it,” Sungho said immediately.

The heart bounced up and down in vigorous protest. Taesan lifted an eyebrow. Woonhak gasped, eyes shining.

“Hyung, it’s so cute.” he whispered, awestruck, then reached across the table with both sticky hands. “Come here, little guy.”

The heart squeaked—if hearts could squeak—and darted behind Sungho’s back, peeking out from over his shoulder with obvious suspicion.

Woonhak clutched his chest. “It’s shy.”

Sungho sat down and set his tray on the table. “I found it after getting off the subway last night,” he explained. “It followed me home.”

Taesan nodded as if this were a completely reasonable sentence. “And now it lives with you.”

“It does not live with me.”

The heart rubbed affectionately against Sungho’s ear.

“That…” Taesan pointed at it with his chopsticks. “...seems to disagree.”

For the next ten minutes, the three of them discussed the situation with varying degrees of seriousness. Woonhak remained convinced that the heart was some kind of angel, while Taesan insisted that it almost certainly belonged to someone. Sungho maintained that there had to be a logical explanation, though he was increasingly unable to articulate one.

“It has to be attached to a person,” Taesan said. “Hearts don’t just detach themselves and start freeloading.”

Woonhak nodded vigorously. “Maybe you saw someone at the café.”

Sungho worked part-time at a small coffee shop near campus, and over the years, no shortage of customers had flirted with him. He thought back carefully—yesterday, classes, his shift at the café, the subway ride home. Had anyone flirted with him? Passed him a note? Stared at him with unusual intensity? Nothing came to mind.

No one except...

His brow furrowed. There had been a boy standing across from him on the train, with dark, slightly curly hair, large expressive eyes, and headphones resting over his ears. Cute, very cute. Their gazes had met a couple of times, and even now Sungho could still remember the warmth of that shy, startled expression.

Before he could linger on the thought, Taesan snapped his fingers. “You need to find the owner.”

“Yes! Return the baby to its parent.” Woonhak pointed dramatically.

“That seems impossible.” Sungho sighed.

“Or maybe it’s fate.” Taesan shrugged.

Sungho rolled his eyes. “Please.”

Taesan smirked. “You locate the owner, you reunite them with their heart, and maybe you finally get a boyfriend or girlfriend.”

The heart shot upward with excitement, spinning so quickly that pink sparkles scattered over the table.

Woonhak clapped. “It likes that idea!”

Sungho reached for his drink, carefully avoiding the expectant stares directed at him. “I’m not interested in dating.”

The reaction was immediate. The heart stopped spinning, its sparkles winked out. Its plump little shape visibly drooped in midair like a flower deprived of sunlight.

“Hyung!” Woonhak gasped in horror. He turned to Sungho with the same scandalized expression one might reserve for kicking a puppy. “You made it sad!”

Sungho blinked. The heart floated lower, small and pitiful, like a deflated balloon.

Woonhak folded his arms. “Apologize.”

Taesan hid a smile behind his cup.

Sungho looked from his friends to the drooping pink heart hovering miserably beside him. Then he sighed. He was beginning to suspect this tiny creature was going to manipulate him for the foreseeable future.

“I’m sorry,” he muttered.

The heart brightened instantly, bobbing with renewed joy before nuzzling against his shoulder. Woonhak beamed. Taesan smirked. And Sungho, despite every rational instinct he possessed, found himself wondering about the boy from the subway and whether somewhere in the city, someone might be missing more than just their chance to say hello.

By the third day of his unexpected companionship with a sentient pink heart, Sungho had reached an uneasy truce with his situation. The heart followed him everywhere. Campus, the library, the convenience store. And, most inconveniently, to work.

Sungho tied on his apron and stepped behind the counter of the small café, grateful to find the afternoon unusually quiet. Only a handful of customers occupied the tables by the windows, laptops open and headphones on. The espresso machine hummed softly in the background, and rain tapped against the glass in a steady rhythm. For once, the universe seemed inclined to show him mercy.

The heart floated at shoulder height, glowing faintly with contentment. Sungho shot it a warning look.

“Behave.”

The heart bobbed solemnly. Which, in Sungho’s experience, meant absolutely nothing.

The first customer of the afternoon was a graduate student who ordered an iced vanilla latte and then squinted at the pink object hovering near Sungho’s ear.

“Is that…?”

Sungho handed over the drink with a pleasant customer-service smile. “I’m sorry?”

“The floating heart.”

Sungho glanced around as though genuinely puzzled. “What floating heart?”

The customer stared. The heart, offended by its deliberate erasure, puffed up and bounced indignantly. Sungho maintained perfect eye contact. After a long pause, the student accepted the latte and walked away looking mildly concerned.

This became the pattern of the day.

A girl ordering a caramel macchiato pointed at the heart and asked if it was some kind of promotional mascot. Sungho blinked innocently and said he had no idea what she was talking about.

A group of freshmen whispered excitedly and took photos. Sungho ignored them.

The heart, meanwhile, seemed to interpret every new face as a potential reunion. Whenever the café door chimed, it perked up eagerly, hovering near the entrance with visible anticipation. And every time the arriving customer turned out to be an exhausted student rather than its mysterious owner, the heart deflated slightly before returning to Sungho’s side. It was… difficult not to feel sorry for it.

Fortunately, his manager took the phenomenon in stride. After a single startled blink on the first day, she had merely adjusted her glasses and said, “As long as it doesn’t interfere with service.”

It did not.

Mostly.

The only exception occurred when the heart became so excited by the smell of fresh pastries that it accidentally knocked over a stack of paper cups. Even then, his manager simply sighed and added, “Please make sure your… friend cleans up after itself.”

Euijoo, Sungho’s coworker for the afternoon, was considerably more enthusiastic. He leaned against the counter, watching the heart twirl around the pastry case.

“It’s adorable.”

“It’s disruptive.”

“It loves you.”

Sungho wiped down the espresso machine. “It’s homeless.”

Euijoo laughed as the little pink heart zoomed over and rubbed affectionately against Sungho’s shoulder. Immediately, he clasped his hands beneath his chin, his expression turning positively delighted.

“See? That is true love.”

Sungho rolled his eyes, though his ears warmed. “It belongs to someone else.”

“Then you should find them.”

The heart brightened immediately, spinning with such excitement that pink sparkles drifted into the tip jar. Sungho looked up just in time to see it dart to the front window and press itself eagerly against the glass whenever the door opened. Waiting. As if every entering customer might be the one it had been searching for.

Sungho’s chest tightened unexpectedly. He thought again of the boy from the subway—the one with the dark hair and oversized headphones, who had looked at him as though seeing something extraordinary. He still remembered those wide, startled eyes, the strange warmth that had passed between them.

The bell over the café door chimed.

The little pink heart shot toward the entrance so quickly that it left a trail of glittering sparkles in its wake. Sungho looked up from the espresso machine, half expecting to see the person it belonged to standing in the doorway.

Instead, a tall student in a leather jacket sauntered up to the counter with the confidence of a man who had never doubted his own reflection. The heart, which had been vibrating with barely contained excitement, visibly deflated. It drifted back to Sungho’s shoulder with a disappointed wobble. Sungho tried not to feel oddly sympathetic.

The customer smiled. “Hi.”

“Hello,” Sungho replied in his practiced barista voice. “What can I get for you?”

The man ordered an iced americano. Then, instead of stepping aside, he leaned one elbow against the counter and smiled again.

“You know,” he said, “I think this is the third time I’ve come here this week.”

Sungho entered the order into the register. “Thank you for your continued support.”

The man chuckled. “And I think the coffee’s becoming my second favorite thing about this place.”

Sungho, who had been flirted with enough times to recognize the pattern immediately, offered a polite smile and reached for a cup. Before he could respond, there was a sudden, decisive—

BOING.

The pink heart launched itself across the counter like a tiny missile, slamming into the customer’s shoulder with all the force of an indignant marshmallow. The man stumbled sideways.

“What the—?”

The heart darted back behind Sungho and hid there, peeking around his waist with unmistakable suspicion.

Sungho blinked. Euijoo, who was wiping down the pastry case nearby, had both hands clapped over his mouth.

The customer looked around in confusion. “Did something just hit me?”

Sungho maintained impeccable composure. “I’m sorry?”

The man frowned but seemed to decide he had imagined it. He turned back with another grin. “So anyway, I was wondering if—”

BOING.

The heart shot out again. Instead of charging straight at him, it zipped around his side in a wide arc like a determined boomerang. The customer barely had time to turn his head before it thumped squarely between his shoulder blades. He lurched forward, nearly knocking over the tip jar.

“What is happening?”

The heart zipped behind Sungho once more, nestling against his spine as if seeking protection after committing a highly justified act of violence. Sungho bit the inside of his cheek to keep from laughing.

The customer stared at the empty air, visibly unsettled. Then he seemed to reconsider whatever line he had prepared.

“Nevermind…” he said slowly.

Sungho handed him his drink. “Have a nice day.”

The man accepted the iced americano, cast one final suspicious glance over his shoulder, and hurried out of the café, the bell jingling behind him. For a moment, silence settled over the counter. Then Sungho turned to the pink heart, which was floating beside him with an expression of smug satisfaction. He folded his arms.

“You cannot do that.”

The heart bounced once, innocently.

Euijoo let out a strangled squeal. “Oh my God,” he said, gripping the counter, practically vibrating with delight. “It got jealous.”

Sungho closed his eyes. “It did not get jealous.”

The heart puffed up proudly.

Euijoo pointed so hard he nearly toppled over. “Look at it! It’s proud of itself!”

Sungho stared at the tiny pink menace hovering at shoulder height. In the span of a few days, it had chased away customers, invaded his apartment, manipulated him with sad expressions, and apparently decided that any potential romantic competition was a direct threat. As if sensing his scrutiny, the heart drifted closer and rubbed affectionately against his cheek—warm, trusting, and hopeful.

Sungho exhaled through his nose. This had gone far enough. Reaching up, he cupped the little creature gently in his hands, and its glossy eyes widened at once.

“Okay,” he said quietly. The heart froze. Sungho softened despite himself. “I’ll find your owner.”

For one suspended second, the heart seemed too stunned to react. Then it exploded into joyous motion. It spun in tight circles, showering the café in pink sparkles before launching itself at Sungho’s face in an ecstatic nuzzle.

Euijoo made a noise that sounded suspiciously like a sob.

Sungho held the heart gently against his chest and shook his head, though there was no real exasperation left in his voice.

“This has to end,” he said softly.

And yet, as the little creature nestled happily against him, Sungho couldn’t ignore the fondness that had taken root in his chest.

Three days after losing his heart, Jaehyun had developed a highly effective strategy for dealing with the situation.

He ignored it.

This was, in Jaehyun’s opinion, a perfectly valid coping mechanism. Historically, it had served him well in a variety of circumstances, including overdue assignments, suspicious bank notifications, and the time he accidentally replied “love you too” to his professor’s email. If he pretended a problem did not exist, then, for a brief and beautiful period, it did not. Simple.

His friends disagreed. Riwoo, in particular, had sent seventeen messages in the last twenty-four hours.

The latest read:

[Riwoo]

> if your INTERNAL ORGANS are MISSING you need to SEE A DOCTOR

Followed immediately by:

[Riwoo]

> i am not joking

And then:

[Riwoo]

> leehan says this might be magical but even magical conditions require medical supervision

Jaehyun had left them all unread.

Because what exactly was he supposed to do? Walk into a hospital and say, “Hello, yes, I made eye contact with a pretty man on the subway and now there is a hole in my chest”?

He could already imagine the doctor’s expression. The gentle clearing of the throat, the solemn adjustment of glasses.

“Mr. Myung,” they would say, with practiced sympathy, “I’m afraid your heart has been stolen.” A dramatic pause. “It’s terminal.”

Jaehyun absolutely refused to participate in that conversation.

So he continued attending class, eating convenience store kimbap, and pretending his body was not missing a crucial anatomical component.

The denial might have worked better if he didn’t ache all the time. Now there was a constant, hollow soreness in the center of his chest, an emptiness that seemed to echo with every breath. A part of him really had left, taken with the beautiful stranger on that train, leaving behind nothing but an empty, heart-shaped space where it used to be.

Jaehyun knew, logically, that he was being ridiculous. He had exchanged exactly two glances with the boy. Two. Not even a conversation. And yet he remembered him with startling clarity—the soft brown hair, the quiet concentration as he read, the elegant hands turning each page, and the tiny smile that had nearly short-circuited Jaehyun’s brain.

Every night, before falling asleep, Jaehyun replayed the scene on the subway until it felt less like a memory and more like a favorite film. Every morning, he woke with the same ache. And every afternoon, he took the exact same train home. Always the same car, always standing in nearly the same spot by the doors, scanning the crowd with growing desperation.

Maybe today. Maybe at the next stop. Maybe the universe would take pity on him and return the boy who had unknowingly walked away with the most important part of Jaehyun’s anatomy.

But three days passed. Then four. And the seat by the window remained stubbornly occupied by everyone except him—a businessman snoring into his scarf, a teenager playing games on her phone, a grandmother carrying enough groceries to feed a small village. Never the beautiful stranger with the book and the life-ruining smile.

By Wednesday evening, even Jaehyun’s naturally optimistic heart—well, his metaphorical one—was beginning to falter.

The train rattled through another tunnel. Jaehyun leaned against the door, headphones around his neck, staring out at his own reflection in the darkened glass. He pressed a hand over the heart-shaped hole hidden beneath his hoodie. The ache was especially strong tonight. He closed his eyes and exhaled.

“Oh, heart stealer,” he whispered dramatically to the window, as though addressing a long-lost lover across time and space. “Where are you?”

The elderly man seated nearby glanced up from his newspaper. Jaehyun ignored him. The train sped onward through the city, carrying him home once more without the stranger who had taken his heart.

By the end of the week, Jaehyun felt like a ghost haunting his own life. He still went to class, turned in assignments, laughed when Riwoo said something outrageous, and listened to Leehan explain, in academic terms, why magical cardiac displacement was “a fascinating case study.” But everything felt muted, distant, as though someone had turned the volume down on the world.

Without his heart, Jaehyun discovered, emotions did not disappear entirely; they simply dulled around the edges. Food tasted blander, music didn’t hit as deeply, and even his usual tendency toward theatrical overreaction had been replaced by a heavy, persistent ache in the center of his chest.

It had been the worst week of his life.

And yet, every evening, he found himself back on the same train, still chasing the impossible chance that the beautiful stranger who had unknowingly walked away with his heart might appear again. By Friday, Jaehyun had stopped allowing himself to expect anything. Hope was exhausting. Hope hurt. And he was already hurting enough.

So when the automated voice announced the approaching station—the one where the stranger had boarded seven days earlier—Jaehyun kept his expression carefully neutral. He adjusted his headphones around his neck, pressed a hand over the hidden hole beneath his hoodie, and told himself, firmly, not to get his hopes up.

The train began to slow, lights from the platform sliding across the windows as passengers shifted in anticipation. Jaehyun stared straight ahead for all of two seconds. Then, because he was weak and hopelessly in love with someone whose name he didn’t know, he turned to look through the glass. At first, he saw only the usual blur of waiting commuters. Then...

There.

Standing on the platform in a cream-colored sweater, a tote bag slung over one shoulder, soft brown hair falling over familiar eyes.

The beautiful stranger.

The boy was looking directly at the train as though searching for something—or someone. Jaehyun’s entire world narrowed to that single point, the empty space in his chest pulsing with sudden warmth. The stranger’s gaze moved over the windows, then landed on him, and those beautiful eyes widened in recognition. Beside the stranger, floating at shoulder height like a tiny pink star, was a heart—round, glossy, and bubblegum pink, radiating an excitement so intense it seemed almost incandescent.

Jaehyun stopped breathing.

His heart.

His actual heart!

At long last, it had found him. The little creature shimmered, sparkles bursting around it as it began to glow brighter and brighter, vibrating with barely contained joy.

The train shuddered to a complete stop, and for one suspended moment neither Jaehyun nor the stranger moved. They simply stared at one another through the glass, equally stunned, while the pink heart trembled between them, shining with all the brilliance of a week’s worth of longing. Then, with a familiar chime, the doors slid open.

Jaehyun stood frozen in the doorway of the train while the pretty boy remained on the platform, equally stunned. Between them, the little pink heart glowed so brightly it looked like a tiny star. Then the warning chime began to sound and the doors started to close.

The boy reacted first. Without thinking, he stepped forward, reached through the narrowing gap, and grabbed Jaehyun by the wrist. Jaehyun barely had time to squeak before he was tugged out onto the platform, the train doors sliding shut behind them a second later.

With a rush of wind and a metallic rumble, the subway pulled away, leaving the two of them standing side by side beneath the harsh station lights. For a moment, all Jaehyun could hear was the pounding of his own nonexistent heart. The stranger seemed to realize all at once what he had just done; his eyes widened, and he released Jaehyun’s wrist as though burned.

“I’m sorry,” he said quickly, cheeks coloring. “I just—”

Jaehyun stared at him. Up close, he was even more devastating—the soft brown hair, warm eyes, and elegant mouth that Jaehyun had spent the last week composing mental sonnets about. He was real. He was here.

After days of searching and aching and wondering whether he had imagined the entire encounter, the beautiful stranger now stood less than a meter away, and somehow, impossibly, it felt less like Jaehyun had found him and more like he had been found. The boy shifted awkwardly under his silence.

The floating heart hovered between them, trembling with so much excitement that sparkles drifted onto the platform like pink snow. When it became clear that Jaehyun was too overwhelmed to produce coherent language, the stranger lifted one hand and pointed to the glowing creature. His voice was soft.

“Is this yours?”

The question snapped something back into place inside Jaehyun’s brain. He blinked rapidly.

“Yes,” he blurted, perhaps louder than necessary. “Yes! It’s mine!”

The heart spun in ecstatic circles, and Jaehyun’s face grew hotter by the second. The words tumbled out before he could stop them.

“I lost it the moment I saw you.”

Jaehyun’s eyes widened. He wanted to fling himself onto the tracks. What he had meant to say was that he had literally lost his heart after seeing the boy on the train, but what had actually come out sounded like the most shameless confession in the history of public transportation.

The pink heart wiggled with smug delight.

The boy’s cheeks turned a lovely shade of pink, his lips parting slightly—and then, to Jaehyun’s infinite relief, he smiled. A soft shy smile, beautiful enough to make Jaehyun lose his heart all over again.

For a moment, neither of them seemed quite sure what to say next. The little pink heart hovered between them, glowing with unabashed satisfaction, as if it had personally orchestrated this reunion and was extremely pleased with the results. At last, the beautiful stranger cleared his throat.

“I’m Park Sungho,” he said.

His voice was gentle and warm, in a way that made Jaehyun’s knees feel suddenly unreliable. He swallowed. Right—words, human conversation. He could do this.

“I’m Myung Jaehyun.”

Sungho repeated his name softly, as if trying it out. “Jaehyun-ssi.”

The simple sound of it in Sungho’s voice nearly caused a second medical emergency. The pink heart bounced happily between them, as though delighted to finally have names to attach to its matchmaking efforts. Sungho lifted both hands and gently cupped the floating heart. It settled into his palms at once, nestling there with obvious affection. The sight was so unbearably tender that Jaehyun had to grip his backpack strap to remain upright.

Sungho looked down at the tiny creature, smiling fondly.

“Well,” he said, his thumb stroking lightly over its rounded surface, “I suppose I should give this back.”

The heart, however, had other plans. With a delighted squeak, it launched upward and attached itself to Sungho’s cheek with a dramatic smooch. Its soft pink body flattened adorably against his skin. Sungho laughed, bright and sweet and so breathtakingly lovely that Jaehyun’s legs nearly gave out beneath him. Sungho peeled the heart off his cheek with obvious reluctance.

“It’s been kind of a menace,” he admitted, still smiling. “But I’ve grown attached.”

Jaehyun’s face burned. His heart was in love. His heart’s kidnapper was in love with his heart. And Jaehyun himself was standing on a subway platform trying not to faint from excessive feelings.

“That’s…” he managed weakly. “That’s very cute.”

Sungho’s ears turned pink and Jaehyun’s brain short-circuited all over again.

“Thank you,” Jaehyun said, extending both hands. “For taking care of it.”

Sungho placed the heart toward him, but instead of moving immediately, the little creature hesitated. It looked back at Sungho, then at Jaehyun, then back at Sungho again, its glossy eyes flickering with uncertainty—as though it wasn’t ready to leave, as though after spending a week nestled at Sungho’s side, it wanted to stay close just a little longer.

Jaehyun’s chest tightened with sudden understanding. The heart had not merely been waiting to return; it had been trying to bring them together, as if it didn’t want them to be separated again. Sungho seemed to understand it too, his expression softening into something impossibly gentle.

“It’s okay,” he whispered. With one fingertip, he gave the heart a tender little push.

The pink creature floated slowly across the small space between them and settled into Jaehyun’s waiting hands. It was warm and squishy, its glossy little eyes blinking up at him with unmistakable sadness—no sparkles, no excited bouncing, just a small, drooping pout that made Jaehyun’s chest ache in response. Before he could dwell on it, Sungho spoke.

“I’m sorry.”

Jaehyun looked up. Sungho’s fingers twisted nervously around the strap of his tote bag.

“I wanted to find you sooner,” he said, his cheeks faintly pink. “But I worked the evening shift at work all week, and…” He glanced at the floor, then back at Jaehyun. “I’m really glad I found you today.”

The simple sincerity in his voice made Jaehyun’s throat tighten. He nodded, unable to trust himself to speak right away.

“I’m glad too,” he said softly.

The words felt too small for what he meant, but Sungho’s smile told him they were enough. Jaehyun looked back down at the little heart in his hands as its rounded shape rose and fell in a tiny sigh. He swallowed, and then, in the gentlest voice he could manage, he asked,

“Are you ready to come home?”

The heart blinked and, slowly, floated up from his palms. Jaehyun set his backpack on the ground and tugged up the hem of his hoodie and T-shirt, revealing the familiar heart-shaped hole in the center of his chest.

Sungho inhaled sharply. Even after carrying the heart for days, the sight of the empty space must have been startling. The tiny creature hovered before the opening, and for one brief moment, it turned back toward Sungho, its eyes shimmering. Sungho smiled, though his expression was a little wistful.

“Go on,” he whispered.

The heart gave one last affectionate wiggle before beginning to glow, soft pink light spilling across Jaehyun’s hands and chest as sparkles drifted around them like luminous dust. Slowly, gently, it pressed itself into the waiting space, fitting perfectly.

Warmth spread through Jaehyun’s body in a rush so overwhelming that he nearly swayed where he stood, and color returned to the world all at once. The fluorescent lights of the station seemed brighter, the distant rumble of the tracks sounded richer, and even the air felt fuller in his lungs. Inside his chest, where emptiness had lived for the past week, his heart beat once, then twice, before executing what could only be described as a triumphant somersault. Jaehyun let out a shaky breath.

He was whole again.

He lowered his shirt, clutching the hem for a moment as he tried to gather his thoughts. Standing in front of him, beautiful and gentle and still faintly pink-cheeked, Park Sungho watched him with quiet concern.

Jaehyun rubbed the back of his neck.

“I’m really sorry,” he blurted.

Sungho blinked. “For what?”

Jaehyun laughed nervously, his ears burning. “For… all of this.” He gestured vaguely between them. “I didn’t exactly expect my heart to detach itself and follow you around.”

For a split second, Sungho simply stared—then he laughed, the sound soft, bright, and impossibly sweet, sending Jaehyun’s newly restored heart into another cartwheel inside his chest. Sungho ducked his head, still smiling.

“Well,” he admitted, voice quieter now, “I’m glad it did.”

Jaehyun forgot how to breathe, his heart performing a series of increasingly reckless acrobatics as the station around them blurred into a haze of lights and distant voices. All that remained clear was Sungho—the warmth in his eyes, the faint blush across his cheeks, the shy honesty in his expression.

Jaehyun opened his mouth, but nothing came out. At that exact moment, another train pulled into the station with a gust of wind and a metallic screech, its doors sliding open. Sungho glanced at the arriving cars and stepped inside, leaving Jaehyun frozen on the platform. Then he turned. For one fleeting heartbeat, he stood framed in the doorway, bright subway lights at his back and the crowd murmuring around him, before raising a hand toward Jaehyun. An offering.

“Aren’t you coming?”

Jaehyun looked at the outstretched hand, at Sungho’s smile, and at the possibility waiting just a single step away. Inside his chest, his heart gave one delighted leap, and this time, he didn’t hesitate—he smiled and took Sungho’s hand.

Together, they stepped into the train as the doors slid shut and the carriage lurched forward. As the city lights blurred beyond the windows, Jaehyun stood beside the boy who had stolen his heart, feeling it beat happily and completely in his chest.

The journey home no longer felt lonely.