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It was the way Kim Sunoo smiled.
At first glance, there was nothing unusual about it. He was still bright in the way people had come to expect, still the sunshine of their group in the way that made conversations easier and long days feel lighter, still effortless enough that no one questioned whether that something was wrong. If anything, he seemed even more consistent than before, still shining without hesitation no matter the situation, as if it had become something fixed instead of something he actually felt.
And maybe that’s why no one noticed right away, because it didn’t disappear when something in him shifted. It stayed the same, steady and unwavering, just a little too perfect.
The announcement didn’t feel real.
It was delivered in a room that felt too controlled for something that heavy. The words came out clean, practiced, leaving no space for interruption, no room for misunderstanding.
“Heeseung will be leaving the group to pursue a solo career.”
There wasn’t even a pause after. No moment for it to sink in, no space to ask questions, no time to process what had just been taken from them before everything moved on. Slipping straight into schedules, expectations, adjustments that needed to be made, as if this was just another change to manage instead of something that would reshape everything after.
Sunoo remembered sitting there with his hands folded neatly in his lap, back straight, expression carefully composed like he understood, like he had accepted it without hesitation.
He even smiled.
Not because he was okay.
But because his body didn’t seem to know how to do anything else.
By the next day, everything had already started moving again.
The practice room looked the same, the mirrors still reflecting familiar figures moving through familiar choreography, the music filling the space with a kind of consistency that made it easy to pretend nothing had changed. They were told to adjust the formations, to shift into new positions, to take on parts that didn’t used to be theirs. Everything was handled with efficiency that there wasn’t much time to hesitate, or to think too hard about why.
“From the top,” the choreographer called, clapping his hands once. “Six-member formation.”
No one reacted.
But the word stayed, settling into the room in a way that was impossible to ignore, even if no one acknowledged it out loud.
Sunoo stepped into place like he always did, without needing to be told twice. He lined himself up where he was supposed to be, his movements clean, precise, familiar as the music started again. His body followed what it knew, what it had practiced over and over—but for a split second, something slipped. His foot moved before he could stop it, drifting toward a space that wasn’t his anymore.
He caught it just as quickly.
“Sorry,” he said with a small smile, light and easy, like it hadn’t meant anything at all.
They kept going.
Jungwon started pausing more before he spoke, like he was weighing every word now, choosing them more carefully than he used to. Jay stayed in the living room longer at night, not really doing anything—just sitting there, eyes unfocused, like he was waiting for something that never came. Jake still laughed, but not as often, and when he did, it came out quieter, softer, like he was holding part of it back. Sunghoon didn’t say much, but he watched everything, and somehow his silence felt heavier than it used to.
And then there was Sunoo.
If anything, he was the easiest to read.
He smiled the same way he always had, bright and effortless. He talked just as much, laughed just as warmly, filled the space the way he always did. He reassured them during practice, kept the mood light during schedules, moved through each day like nothing had been shaken loose.
It wasn’t that he looked unaffected.
It was that he didn’t look affected at all.
And somehow, that made it harder to believe.
It wasn't a single moment of noticing, but a series of small observations from the members that eventually added up.
Small, fleeting moments that didn’t last long enough to be addressed, but stayed just long enough to be remembered.
Sunghoon noticed it first.
He had arrived early to practice that day, expecting the room to still be empty, the lights not fully on yet, the mirrors dimmed into something softer than usual. So when he saw movement in the reflection, he stopped.
Sunoo was already there.
Alone in front of the mirror.
Not dancing. Not stretching. Just standing still.
Sunghoon stayed near the doorway, quiet enough that he wasn’t noticed yet, watching without meaning to.
Sunoo’s expression was blank.
Not tired.
Not distracted.
Just still in a way that didn’t feel like rest.
Then, slowly, Sunoo lifted his head and looked at himself—and smiled.
It didn’t look natural.
Not the Sunoo they knew, the one whose expressions usually came so easily, so instinctively, it never felt like he had to think about them.
This one did.
It was like something being adjusted.
Carefully.
He held the smile.
Let it drop.
Tried again.
Held it a little longer this time.
One second.
Then two.
His lips shifted slightly, like he was correcting something invisible only he could see.
Wider.
Softer.
Brighter.
Sunghoon felt something tighten in his chest.
Because it didn’t look like practice for dancing or singing.
It looked like practice for being seen.
Before he could decide whether to step away or speak, his foot shifted against the floor—just enough to make a sound.
Sunoo turned instantly.
“Hyung!” he greeted, and the smile was already there again, bright and easy, like it had never left. “You’re early.”
Sunghoon held his gaze for a second longer than usual. “…You too,” he said.
Sunoo gave a small laugh. “Couldn’t sleep.”
And just like that, it was gone.
No trace of what Sunghoon had seen a moment ago remained.
Not in his expression.
Not in his voice.
And if Sunghoon hadn’t been there to witness it himself, he wouldn’t have believed it had happened at all.
It didn’t stop there. Jake noticed it one night in the dorm.
He had woken up halfway through the night. The dorm was quiet, everything swallowed in darkness except for a faint light spilling from the kitchen.
He didn't meant to look, and he definitely didn't meant to intrude, but when he stepped out into the hallway, he stopped.
Sunoo was there.
Standing by the counter with one hand resting lightly against it, shoulders slightly slumped in a way Jake had never seen before.
He wasn’t doing anything.
Just standing.
Breathing unevenly, like something had been left unspoken too long. For a second, it looked like he might cry.
Jake stayed frozen where he was, partly hidden by the hallway wall, unsure whether to step forward or pretend he hadn’t seen anything at all.
He was about to move when Sunoo’s lips pressed together tightly, his eyes squeezing shut for a brief moment, like he was forcing something down before it could surface.
And then—
He opened his eyes.
And he was smiling.
Jake stepped out before he could think better of it.
“Hey,” he said softly.
Sunoo turned immediately, too quickly, like he had already reset himself.
“Oh hyung, did I wake you?” he asked, voice light, expression already rearranged into something familiar.
Jake hesitated for a second. “…No. I just couldn’t sleep.”
“Same,” Sunoo said easily, like nothing had happened. “Guess we’re just too used to busy schedules.”
Jake nodded slowly.
But even after he went back to his room, the image didn’t leave him.
Not the smile.
Not the moment before it.
Ni-ki noticed it during practice.
Jungwon noticed it during interviews.
Jay noticed it in the way Sunoo spoke before anyone else could interrupt.
And slowly, without any single moment marking the change, all the things they had noticed began to pile up, until staying silent about it no longer felt like an option.
The conversation happened late, in the dorm after their dinner,when Sunoo had to step outside for a moment.
The air felt heavier than usual. No one spoke at first, the silence stretching longer than it should have, each of them sitting with the same thought they hadn’t said out loud yet.
Until Jake finally broke it.
“He’s still smiling.”
Jay looked up slightly. “What do you mean?”
Jake hesitated, eyes dropping to his hands before he spoke again. “Sunoo,” he said. “He keeps smiling. Even when there’s nothing there to smile about.”
That sentence alone didn’t feel new.
What made it heavier was that no one asked him to explain further.
Jungwon leaned forward, elbows resting on his knees, letting out a slow breath. “I thought it was just me,” he admitted quietly. “But you’ve all noticed it too, right?”
“Yes,” Ni-ki said immediately. No hesitation. “We have.”
Sunghoon, who had been quiet until then, shifted slightly. His gaze stayed distant, like he was replaying everything he had already seen but hadn’t fully understood at the time. “He’s always been like that,” he said. “But not like this.”
That line lingered.
Not like this.
Jungwon looked down at his hands. “He hasn’t said anything,” he said after a moment. “Not once.”
No complaints. No frustration. Not even confusion.
Nothing.
Ni-ki let out a small, almost humorless laugh. “That’s worse,” he said quietly.
And no one disagreed.
The silence that followed wasn’t empty.
It was full of all the moments they had brushed off before, all the smiles they hadn’t questioned, all the times they had told themselves it was nothing.
Jay let out a quiet breath, staring at the floor. “Then what do we do with that?”
No one answered.
Because the truth was, none of them were sure they were ready for the answer.
The next day, it just happened not because they planned it, but because it was impossible to keep it silent any longer.
The practice room felt the same again, though nothing about it really was. Sunoo stood near the mirror, relaxed posture, familiar smile already in place when he looked at them.
“Should we start practicing again?” he asked lightly.
No one moved.
The shift was immediate. Subtle, but unmistakable.
Sunoo’s smile faltered for a fraction of a second.
“…What?” he let out a small laugh, but it didn’t land the way it usually did. “Why does everyone look so serious?”
Jungwon stepped forward first, careful. “Sunoo hyung… can we talk for a bit?”
“About what?”
“About you,” Jay said this time, steady, direct.
That made him blink.
Then he smiled again but this time, it felt like something he chose to do.
“Me? I’m fine.”
“You’re not,” Ni-ki said immediately.
“I am,” Sunoo insisted, his voice tightening. “Why does everyone keep saying I’m not?”
“Because we see you,” Jake said quietly.
Sunoo shook his head quickly. “There’s nothing to see. I’m doing everything right. I’m keeping up. I’m not causing problems.”
“That’s not the point,” Jay said.
“Then what is?” Sunoo snapped, sharper than before. “Do you want me to fall apart? Is that it? Because I can’t do that. I won’t.”
Silence followed.
“I have to be okay,” he continued, more forceful now, like he needed them to accept it. “Someone has to be. We have schedules, expectations—fans are watching us. If I start breaking down now, what happens to everything else?”
“Then what happens to you?” Jungwon asked quietly.
Sunoo shook his head immediately. “It doesn’t matter. There are more important things.”
“That’s not true,” Jay said firmly.
“It has to be,” Sunoo shot back. “Because if I fall apart, then what happens to everyone else?”
The room stilled.
“I can’t do that,” he said again, voice rising. “I can’t be another problem you all have to deal with.”
“It’s not a problem,” Jake said softly.
“But it is,” Sunoo insisted. “You all have your own responsibilities. I don’t get to add mine on top of that.”
“That’s not how this works,” Jay replied.
“It’s the only way I know how to do this,” Sunoo said, voice cracking slightly at the edges.
That hit harder than anything else.
Because it wasn’t defiance.
It was belief.
“I’m fine,” he repeated again, more urgently now, as if repetition could make it real. “I have to be fine.”
“Hyung—”
“I have to be okay,” he cut across Ni-ki, stepping forward slightly. “That’s my role. That’s what I’m supposed to do.”
“No,” Ni-ki said quietly, firmer now. “That’s what you decided you had to do.”
Sunoo shook his head. “It’s the same thing.”
“It’s not,” Ni-ki insisted.
“It is, Ni-ki,” Sunoo said, breathing starting to shake. “Because if I stop—if I let myself feel even a little—”
He stopped.
Swallowed hard.
“I won’t be able to stop.”
Silence followed.
And then it happened.
Not all at once, but in pieces that no longer held together.
His breathing broke first, uneven, too fast, like his body had outpaced his control. His hand pressed against his chest instinctively, as if that could hold everything in.
“I’m okay,” he said quickly.
Too quickly.
Across from him, Jungwon took a small step forward, then stopped, his hands at his sides wanting to move closer to his Sunoo hyung to help or but doesn’t want to make things worse. Jake’s hand curled tightly at his sleeve, like he was holding himself back from moving too fast. Ni-ki stood frozen, watching.
Jay’s jaw tightened. Sunghoon didn’t look away even once.
“I’m okay, I just—” Sunoo continued, shaking his head, his voice uneven now.
“I just need a second. That’s all. It’s nothing.”
But even he didn’t sound convinced anymore.
The words started slipping after that.
“I’m fine, I just— I’ve been fine this whole time, I just need to keep going—”
His voice broke.
“I just need to hold on a little longer—”
He stopped, breath catching hard.
Jay exhaled slowly, the sound barely audible, his jaw tightening as if he were holding himself back from saying something too soon, something that might shatter what little control Sunoo still had left. Sunghoon’s gaze didn’t leave Sunoo for even a second, quietly taking in every move, every crack that was becoming harder to hide.
“I’m fine,” he insisted again, forcing his shoulders back, trying to straighten himself into control, trying to rebuild something that was already slipping. “See? I’m still—”
His breath caught.
Sharp.
Painful.
“…I’m still okay,” he tried again, softer this time, like he needed them to agree.
Jake shook his head just slightly.
And Sunoo saw it. That was the breaking point.
“I have to be okay!” he rushed, words spilling faster now. “I can’t break down now. I can’t. I just have to get through this again, I’ve been fine this whole time, I just need to keep going a little longer and then it’ll stop, it always stops, I just need to—”
Ni-ki’s hands clenched at his sides.
Jungwon took another step forward.
Jay inhaled sharply.
“I’m okay,” Sunoo whispered.
But it was already happening.
Everything he had been forcing down—every forced reaction, every suppressed thought, every moment he told himself not now, not here, not like this—came out all at once, overwhelming and unstoppable.
A broken cry tore out of him before he could stop it.
His shoulders shook as he struggled to breathe through his tears. He tried to speak, but his voice kept breaking
“I— I can’t—” The rest disappeared into another sob.
His chest hurt.
His throat burned.
And still, it didn’t stop.
“I tried—” he choked out, barely audible. “I tried to just—keep it—”
His voice broke completely. He stopped trying to control how he sounded. He just finally let himself cry.
Jungwon moved first, crossing the space and pulling him in before he could fall any further. Sunoo clung to him immediately, like he had been waiting for something solid to finally break against.
“I’m here, hyung,” Jungwon said quietly, voice trembling.
Jake stepped in next, hand resting carefully on Sunoo’s back, grounding him without pressure.
Jay stayed right there, silent and protective
While Sunghoon remained nearby, watching, ready to help if needed.
“Hyung,”Ni-ki said softly. He finally moved to hug his Sunoo hyung.
And this time—there was nothing left to argue.
Sunoo cried openly without restraint, shaking in their arms, finally letting everything he had been forcing down come out without restraint.
Instead of trying to fix things, they just let him cry. They just stayed by his side until he started to calm down. Things weren't perfectly fixed, but now Sunoo knows he didn't have to hide his pain anymore.
That same night, they decided to have a sleep over. The dorm felt different, even though it was quiet, the silence between them didn’t feel heavy anymore, but it wasn’t awkward either. It just… existed, without needing to be filled.
They stayed together without forcing conversation. There was no need to pretend everything was fine, but also no need to act like everything had fallen apart.
“I couldn’t sleep,” Jake admitted quietly.
“Me neither,” Jungwon said.
Jay nodded.
Sunghoon stayed where he was
Ni-ki didn’t look away.
Sunoo sat with them, quietly. He looked more relaxed because he wasn't trying to hide his feelings anymore.
“…Me too,” he said.
And this time, that was enough.
The following days weren't suddenly "better" or easier. The schedules were still demanding, and the pressure didn't just go away. There was still a gap in their group that they felt everywhere—at practice, backstage, and in those quiet moments when no one was looking.
Sunoo still felt that old habit creeping up. He’d feel his chest tighten and instinctively want to sit up straighter, put on a smile, and pretend everything was fine before the others saw.
And sometimes, he still did.
But not every time.
Now, there were moments where he just let the silence happen. He didn't feel the need to fill it with a fake laugh or a forced joke. If he felt like he wasn't okay, he just said it. He kept it simple and honest.
And every time he did, the others just... stayed. They didn't try to "fix" him or tell him to get over it. They were just there.
The empty spot in their choreography didn't go away, and it still felt weird to look at. But they stopped trying to hide the gap. Instead, they learned how to move around it together. It was just a part of them now.
Sunoo still smiled, of course. But it wasn't a mask he had to wear anymore. He finally allowed himself to feel other things, too. And for the first time, that made his smile feel real.