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Behind Every Star Is a Rival

Summary:

Heeseung and Sunoo have been competing since childhood—both talented, both driven, but with one crucial difference. While Heeseung has always dreamed of stardom, Sunoo pursued it simply to beat his rival at his own game.

When Sunoo unexpectedly rises to fame first, it seems like victory is his. But after a scandal threatens to destroy everything he's built, he's forced into the unthinkable: joining a group with none other than Heeseung, whose star is only beginning to rise.

Chapter Text

The bass line vibrated through the soles of Sunoo's shoes as he stood in the shadows of the backstage area. He'd promised himself he wouldn't come tonight, yet here he was, hidden behind a stack of speakers, watching Heeseung own the stage like he was born for it.

 

The small venue pulsed with energy as the crowd of three hundred strong packed themselves against the barrier, arms outstretched toward the slender figure bathed in blue light. Every eye fixed on Heeseung, every voice raised to sing along with the chorus. His voice—clear, steady, and infuriatingly perfect—soared above the instrumental track, filling every corner of the room with a tone that somehow managed to be both powerful and vulnerable at once.

 

"Still hiding in corners to watch him perform?" A voice behind Sunoo made him jump. His manager, Jay, stood with arms crossed, one eyebrow raised knowingly.

 

"I'm not hiding," Sunoo replied, straightening his shoulders. "I'm observing the competition."

 

Jay's face softened with something that looked dangerously like pity. "After fifteen years, I'd think you'd admit it's more than that."

 

Sunoo didn't answer. On stage, Heeseung hit a high note that sent chills down his spine—the same spine that suddenly stiffened when his mind flashed back to the first time he'd heard that voice.

 

He could still remember the scent of floor polish and anxiety, the weight of his mother's hands on his small shoulders, and the exact moment when Lee Heeseung had walked onto that elementary school stage and changed everything.

 

"You'll see him at the company meeting tomorrow anyway," Jay said, checking his watch. "We should go. The CEO wants to talk to you before—"

 

"I know what he wants to talk about." Sunoo's voice came out sharper than intended. The scandal. It was always about the scandal now.

 

On stage, Heeseung dropped to his knees for the bridge of the song, eyes closed, one hand clutching his chest as if the emotion was too much to contain. The crowd screamed their approval, and Sunoo fought the urge to roll his eyes. Always so dramatic, always so perfectly, calculatedly authentic.

 

"Just five more minutes," Sunoo said, not looking at Jay. "I want to see how he ends it."

 

Jay sighed but didn't argue. He'd been Sunoo's manager long enough to recognize a lost cause when he saw one.

 

As Heeseung launched into the final chorus, Sunoo studied him with the intensity of someone memorizing an enemy's weaknesses. The way Heeseung's fingers curled around the microphone. The controlled way he used his breathing to support each phrase. The subtle body movements that seemed spontaneous but that Sunoo knew were choreographed down to the smallest gesture.

 

And despite everything—despite the fifteen years of competition, the barbed comments in interviews, the charts where they'd battled for position—Sunoo couldn't deny it. Heeseung was magnificent.

 

That was the worst part. It would be easier if he were mediocre, if his success was just industry manipulation or pretty privilege. But no—he was genuinely, undeniably talented. Always had been. The golden boy with the golden voice, who made everything look effortless while Sunoo worked himself to exhaustion behind the scenes.

 

The song ended with Heeseung holding a perfect note that tapered into silence, followed by an explosion of applause. He bowed deeply, genuine gratitude evident in the way he pressed his hands together and touched them to his forehead. Sunoo had never mastered that humility. His own bows always felt mechanical, a performance of thankfulness rather than the real thing.

 

"Now we really need to go," Jay insisted, placing a hand on Sunoo's arm. "The last thing you need right now is for someone to spot you here and start more rumors."

 

With one last look at the stage, where Heeseung was now waving as he prepared to exit, Sunoo nodded and turned away. They slipped out through the service entrance, avoiding the crowds and potential fan recognition. Outside, the night air hit Sunoo's face like a splash of cold water, breaking the spell of the performance.

 

Jay's car was parked in the alley, nondescript enough not to draw attention. As they pulled away from the venue, Sunoo's phone buzzed with a notification. He ignored it, knowing it was probably just another commentary on the leaked private conversations that had thrown his career into jeopardy.

 

"You know," Jay said as they merged into the late-night Seoul traffic, "there was a time when you two were just kids who loved music."

 

Sunoo stared out the window at the blur of neon signs and streetlights. "There was never such a time."

 

His mind drifted back—not to their first meeting, not yet, but to the night three weeks ago when everything had fallen apart. The private messages, never meant for public consumption. His unfiltered thoughts about the industry, about other artists, about the fans themselves. Words typed in moments of frustration and exhaustion, now weaponized against him. The headlines had been merciless: "LUMINA's Sunoo Exposes True Colors in Leaked Chat Scandal."

 

LUMINA. The company that had made him a star and might now be preparing to let him go.

 

"The CEO has a proposition for you," Jay said carefully, eyes on the road. "It's... unconventional, but it might be the only way to salvage things."

 

"Just tell me."

 

"He wants to wait until tomorrow, to present it properly with the team."

 

"Jay." Sunoo turned to face his manager, fatigue and frustration sharpening his tone. "I've had three weeks of people talking about me behind my back. Don't you start too."

 

Jay sighed, tapping his fingers against the steering wheel as they stopped at a red light. "They're forming a new group. Requiem. Six members, high-concept, multi-national, positioned to target the global market."

 

Sunoo frowned. "What does that have to do with me? I'm a solo artist."

 

"Not anymore. At least, not if you want to stay with LUMINA."

 

The light turned green, but the words had hit Sunoo like a physical blow. Not a solo artist? After everything he'd worked for? A fter climbing the charts on his own, building his personal brand, distinguishing himself from the endless parade of idol groups?

 

"That's ridiculous. I'm not joining some rookie group at this point in my career. I'd rather terminate my contract."

 

"That's the other option they'll present tomorrow," Jay said quietly. "Termination with full breach penalties."

 

Sunoo's blood ran cold. The penalties would bankrupt him. Three years of income, plus damages, plus potential legal fees if he fought it. All his success, all his careful saving, gone in an instant.

 

"Who else is in this group?" he asked, already dreading the answer.

 

Jay hesitated, then delivered the blow Sunoo had been anticipating since the moment he'd seen Heeseung on that stage tonight.

 

"Heeseung is the leader. The company has been preparing him for this role for months. That's why they've been booking him these small venues, to build an organic following before the official debut."

 

Sunoo closed his eyes, a hollow laugh escaping his lips. Of course. Of course it would come to this. Fifteen years of rivalry, and now they wanted to package them together like some perverse buddy comedy.

 

"There are five others including you," Jay continued. "All talented, all with their own followings. They're going for a dark, ethereal concept with Requiem."

 

"And I'd be what? The villain brought in for drama and publicity?"

 

"You'd be the veteran. The experienced one." Jay paused, then added quietly, "And yes, the publicity wouldn't hurt."

 

As the car wove through the nighttime streets of Seoul, Sunoo felt the walls closing in around him. Join a group with Heeseung or lose everything. Those couldn't be the only options. There had to be another way.

 

But as they approached his apartment building, the memory he'd been avoiding all night finally broke through—the day it all began, the first competition, the first comparison. Two six-year-old boys with dreams too big for their small bodies, set on a collision course that had defined every day since.




 

"Next up, Kim Sunoo, age six, performing 'My Dream'!"

 

Sunoo clutched his small microphone, heart pounding against his dinosaur t-shirt as he climbed the three steps to the community center stage. The elementary school talent show audience—mostly parents with cameras and restless siblings—applauded politely.

 

In the front row, his mother sat with perfect posture, her encouraging smile not quite reaching her eyes. Next to her, his father checked his watch for the third time in as many minutes. They'd fought that morning about whether this was a waste of time. "He's too sensitive for this industry," his father had said, not bothering to lower his voice. "He'll be crushed." His mother had countered with her usual argument: "He needs to learn resilience. Better to start now."

 

Sunoo tried to focus on the bright lights instead of his churning stomach. He'd practiced the song a hundred times in front of his bedroom mirror, holding a hairbrush instead of a microphone, imagining applause much louder than the smattering he was receiving now.

 

The music started—a children's song about following your dreams that his vocal coach had chosen. Sunoo took a deep breath and began to sing. His voice was clear and sweet, if a little thin with nervousness. By the second verse, he'd found his confidence, moving around the stage with cautious choreography his mother had helped him practice.

 

When the final notes faded, there was a moment of silence before the applause began—slightly louder this time, with a few "awws" from the mothers in the audience. Sunoo bowed deeply, just as his mother had taught him. When he straightened, he saw her nodding with the tight smile that meant "acceptable, but room for improvement." His father had stopped checking his watch, which was something.

 

"Thank you, Sunoo! Very nice," the MC said, guiding him toward the steps. "Next up, we have Lee Heeseung, also age six, performing 'Reach for the Stars'!"

 

Sunoo was supposed to return to his seat, but curiosity kept him lingering at the side of the stage. He'd never heard of Lee Heeseung before. This was his first competition in this district since his family had moved from Busan two months ago.

 

A small boy with serious eyes and a blue button-up shirt that looked uncomfortable took center stage. Where Sunoo had been visibly nervous, this boy seemed unnaturally calm, taking the microphone with a polite bow to the MC.

 

The music began, a more difficult song than Sunoo's, with complicated melodies and key changes. At the first note, Sunoo's stomach dropped. Even at six years old, he knew immediately—this boy was better than him.

 

Heeseung's voice resonated through the community center with a richness that belied his age. He didn't move around the stage like Sunoo had; he didn't need to. He stood perfectly still, only his expressive face and occasionally outstretched hand conveying emotion as his voice did all the work.

 

The audience's reaction was immediate and undeniable. Phones came up to record. Parents who had been chatting fell silent. Even the fidgeting siblings stopped to watch.

 

From his position in the wings, Sunoo could see his mother's face. She was watching Heeseung with naked assessment, her head tilted slightly as if calculating something. His father had put down his newspaper and was paying full attention.

 

When Heeseung finished, the applause was thunderous by elementary talent show standards. The boy bowed with perfect ninety-degree precision, his face serious until he straightened and broke into a smile that transformed him from solemn performer to ordinary child in an instant.

 

"Wow! Wasn't that something special?" the MC gushed, placing a hand on Heeseung's shoulder. "I think we might have a future idol in our midst!"

 

Sunoo's chest tightened with a feeling he couldn't name. He'd been singing since he was four, taking lessons his parents could barely afford, practicing until his throat hurt. And this boy—this stranger—had just walked in and effortlessly outshone him.

 

As Heeseung descended the steps, he passed close to where Sunoo stood. Their eyes met briefly—Heeseung's curious, Sunoo's wide with something between awe and dismay. Neither boy spoke, but something passed between them, a recognition perhaps, before they both turned away.

 

Sunoo made his way back to his seat, hyper-aware of the whispers around him.

 

"Did you hear that Lee boy? Incredible!" "Natural talent, you can't teach that." "The Kim boy was cute too, but that Heeseung..."

 

By the time Sunoo slid into his seat beside his mother, his cheeks were burning.

 

"Mom, did you hear him? He was really good," Sunoo whispered, seeking reassurance.

 

His mother placed a cool hand on his arm. "Yes, he was. But that doesn't mean you can't be better with practice." Her voice was low, for his ears only. "Watch him carefully. Learn what makes him special, then find a way to be more special."

 

The rest of the talent show passed in a blur. Sunoo couldn't focus on the other children performing—all he could think about was Heeseung's voice and his mother's words. More special. How could he be more special than that?

 

At the end of the show, the judges conferred briefly before announcing the winners. Sunoo received an honorable mention ribbon, which his mother tucked into her purse without comment. Heeseung won first place, accepting his trophy with that same serious expression, followed by the transformative smile.

 

During the reception afterward, with cookies and juice boxes arranged on a folding table, Sunoo watched as parents and teachers flocked around Heeseung and his family. His own parents stood slightly apart, his mother's eyes never leaving the crowd around the other boy.

 

"We should introduce ourselves," she said suddenly, straightening Sunoo's collar. "Connections are important in this industry."

 

Before Sunoo could protest, she was steering him through the crowd toward Heeseung and his parents. Heeseung was nibbling a cookie, looking uncomfortable with all the attention but politely answering questions from the adults around him.

 

"Excuse me," Sunoo's mother said, her voice honey-sweet. "We just wanted to congratulate your son. He has an exceptional voice."

 

Heeseung's mother—a slender woman with the same serious eyes as her son—turned with a practiced smile. "Thank you. Your son performed well too."

 

"This is Sunoo," his mother said, nudging him forward. "He's been taking vocal lessons for two years now."

 

"Heeseung started last year," his mother replied, the slightest emphasis on 'last year' making it clear she was noting the comparison. "He's a quick study."

 

The two women sized each other up with identical smiles that didn't reach their eyes. Sunoo and Heeseung stood awkwardly between them, neither sure what to say.

 

"Perhaps the boys could practice together sometime," Sunoo's mother suggested. "I'm sure they could learn from each other."

 

"Perhaps," Heeseung's mother said noncommittally. "Heeseung's schedule is quite full with lessons and school, of course."

 

"Of course. Sunoo's as well."

 

As the adults continued their passive-aggressive exchange, Sunoo glanced at Heeseung, who was staring at his feet. "I liked your song," Sunoo offered quietly.

 

Heeseung looked up, surprised. "Thanks. Yours too. The choreography was cool."

 

Before Sunoo could respond, one of the judges approached their group. "Mrs. Lee, I wanted to speak with you about opportunities for Heeseung. He has remarkable potential."

 

Heeseung's mother's attention immediately shifted to th e judge, her smile warming considerably. "We'd be very interested in hearing about that."

 

The conversation pivoted, leaving Sunoo and his mother effectively dismissed. As they walked away, Sunoo saw his mother's knuckles whiten around her purse strap.

 

"You need to work harder," she said simply. "That boy has natural talent, but natural talent only goes so far. Discipline and determination will take you further."

 

Sunoo nodded, but inside, something had changed. The pure joy he'd always felt when singing had been tainted with a new emotion—comparison. From this day forward, his voice would never be just his own; it would always be measured against Heeseung's.

 

In the car on the way home, while his parents discussed vocal coaches and additional lessons, Sunoo pressed his forehead against the cool window and made a silent promise to himself. One day, people would crowd around him instead. One day, his voice would be the one everyone remembered.

 

One day, Lee Heeseung would be the one standing in the shadows, watching him shine.