The school hallways were quieter than usual that afternoon.
Sunlight filtered through the tall windows, stretching long pale lines across the polished floor.
The sound of distant classrooms, footsteps, and lockers opening echoed faintly—but everything felt strangely suspended, like the building itself was holding its breath.
Ji-Woo walked through it all in her uniform.
Neat.
Simple.
Her short hair now framing her face softly, no longer tied back in the same controlled way. Her expression was calm, almost gentle—but different.
Not softer in a fragile way… more like she had finally stopped bracing for impact all the time.
People noticed.
They always did.
She just didn't care enough anymore to react to their stares.
Ji-Woo kept walking until she reached the empty hallway near the staircase.
The place they were supposed to meet.
Eun-Woo was already there.
Leaning slightly against the wall.
Hands in his pockets.
Waiting.
When he saw her, his expression tightened immediately.
"…What are you doing here?"
Ji-Woo stopped a few steps away.
For a second, she just looked at him.
Then she said quietly—
"…It's me. Ji-Woo."
Eun-Woo frowned.
"Ji-Woo?" he repeated sharply. "Which Ji-Woo? I thought you were leaving."
That made her pause.
Her brows knitted slightly.
"…Leaving?"
A beat of silence.
Then it clicked.
Her eyes lowered briefly.
"Oh," she said softly. "That must've been my sister. Ji-Soo."
The moment she said it Eun-Woo's expression shifted.
Confusion first.
Then disbelief.
Then something sharper.
"…Your sister?"
Ji-Woo nodded slowly.
But the air around them changed instantly.
Eun-Woo stepped forward.
Not close enough to touch.
But close enough to feel the tension.
"So all of that," he said, voice tightening, "was a lie?"
Ji-Woo blinked.
"What are you talking about?"
His jaw clenched.
"You being here. Talking to me. Acting like you were—" he stopped, breath uneven, "—like you were you."
Ji-Woo frowned slightly.
"I am me."
"No," he snapped.
The sound echoed slightly in the hallway.
Eun-Woo's eyes were sharp now.
"Everything I felt… everything I thought was real—was it even real?"
Ji-Woo went still.
Slowly, she understood.
Not just his words.
But what he was actually breaking down over.
"…Eun-Woo," she said quietly, "why are you angry?"
He laughed once.
Short.
Cold.
"Because it was all a lie," he said. "That's why."
His voice cracked slightly at the end, but he kept going.
"All I'm feeling right now… feels like a lie too."
Silence.
Ji-Woo stared at him.
Something in her chest tightened—not guilt exactly, but something more complicated. Understanding, maybe.
He wasn't just angry at her.
He was angry at the version of reality that had shifted under him without warning.
Eun-Woo stepped back slightly.
"I don't even know what was real anymore," he said quieter now, almost to himself.
Then he turned.
And walked away.
Ji-Woo stood still.
Watching him go.
She didn't follow.
Didn't call him back.
Just stood there as the space between them widened.
Then—
a soft tch tch tch sound came from behind her.
Slow.
Deliberate.
Mocking in a quiet way.
Ji-Woo didn't even need to turn to know who it was.
Mi-Sook.
Leaning against the wall nearby.
Arms crossed.
Watching everything like she had just been enjoying a private performance.
"Well," Mi-Sook said lightly, "that went beautifully."
Ji-Woo slowly turned her head.
Her expression was calm.
But her eyes—
not as soft anymore.
Mi-Sook smiled.
"You really should've thought before playing both sides," she continued. "Now look at him. Completely broken over something that wasn't even stable to begin with."
Ji-Woo's fingers curled slightly at her side.
Mi-Sook stepped forward a little.
Still smiling.
"You're good at pretending," she said. "But eventually people see through it."
Something inside Ji-Woo shifted.
Just slightly.
Her body moved half a step forward—
like she might actually shove her.
But she stopped.
Paused.
Then exhaled slowly.
Her voice came out quieter than expected.
"…If I push you right now," she said, "what am I?"
Mi-Sook blinked slightly.
Ji-Woo's eyes stayed steady.
"I'd just be you."
A beat.
Silence.
The words landed heavier than anything physical.
Because for once—
Mi-Sook didn't have a quick reply.
Ji-Woo looked at her for a second longer.
Then stepped past her without another word.
No shaking.
No hesitation.
Just calm control.
Mi-Sook stayed still.
And for the first time—
her expression wasn't amused anymore.
It was slightly… unsettled.
Because Ji-Woo hadn't reacted the way she expected.
And that was beginning to scare her more than anger ever did.
Mi-Sook didn't let it go.
The moment Ji-Woo turned her back, she moved again—fast, sharp, reckless.
"How dare you push me and walk away like that?" Mi-Sook snapped, her voice rising in the hallway. "Do you think you're untouchable now?"
Ji-Woo stopped.
Slowly turned.
Her expression was still controlled, but there was something colder in her eyes now.
Mi-Sook stepped closer, breathing heavier.
"I've dealt with people like you before," she hissed. "I tried to finish this once already. You were just lucky someone interfered."
A pause.
Then her voice dropped lower, more venomous.
"Next time, I won't miss."
That was enough.
The air shifted.
Ji-Woo's calm cracked slightly—not into fear, but irritation.
She exhaled slowly.
"…You really like talking, don't you?"
Mi-Sook's face twisted.
"I'm warning you—"
Before she could finish, she shoved Ji-Woo hard.
Not enough to seriously hurt her—
but enough that Ji-Woo stumbled back and hit the edge of the classroom desk directly.
Her head struck the side sharply.
A dull, painful impact.
Ji-Woo froze for a second, hand lifting instinctively to the spot near her hairline—close to her birthmark area.
Her breath hitched.
Then she slowly straightened.
And something in her expression changed.
Mi-Sook didn't stop there.
She moved again, grabbing Ji-Woo's shoulder to push her further—
but Ji-Woo reacted faster this time.
She stepped back into the classroom.
Stumbled slightly.
And landed on the floor.
Hard.
A sharp pain shot through her side.
The room went quiet for half a second.
Ji-Woo blinked once, jaw tightening.
Then she pushed herself up quickly, anger finally breaking through the calm.
"…That's enough," she said sharply.
Mi-Sook moved in again, clearly losing control now, reaching forward like she was going to grab her collar or worse—
But before she could touch Ji-Woo again—
a hand shot in from behind.
Fast.
Firm.
Someone grabbed Mi-Sook's wrist and twisted it away mid-motion.
Then, without hesitation, another hand grabbed her uniform collar and slammed her back against the classroom wall.
The impact made the room go silent.
Everyone turned.
Mi-Sook's eyes widened as she looked up.
And froze.
Ji-Soo.
Standing there.
Expression sharp.
Not soft.
Not confused.
Nothing like the version people usually expected from her.
This one—
was alert.
Focused.
And faintly amused in the most dangerous way.
"…You," Ji-Soo said quietly.
Her grip on Mi-Sook's collar tightened slightly.
"You really don't learn, do you?"
Mi-Sook swallowed.
For the first time, she looked unsure.
Around them, students had frozen completely.
Whispers stopped mid-air.
Ji-Bok was at the side of the room, watching—eyes slightly widened, like he was half-impressed and half-annoyed at the chaos.
Eun-Woo stood further back near the doorway.
Expression unreadable.
Just watching everything unfold.
Ji-Soo leaned slightly closer to Mi-Sook.
Voice calm.
Almost playful.
But dangerous underneath.
"You touch my sister," she said slowly, "and you still think you get to walk away afterward?"
Mi-Sook tried to speak—
but Ji-Soo's grip tightened again, cutting her off.
"I don't care what you've tried before," Ji-Soo continued. "I don't care what you think you can do."
A small smirk formed.
"But if you ever touch her again…"
She let the silence hang for a moment.
Then finished softly—
"You won't have a chance to try anything twice."
Mi-Sook's face went pale.
Ji-Soo stared at her for another second.
Then released her collar.
Not gently.
Just… decisively.
She straightened Mi-Sook's uniform with one quick motion, like fixing something messy.
Then ran a hand through her own hair, smoothing it back into place casually.
Like nothing happened.
Ji-Soo turned slightly.
And the room finally saw her properly.
Not Ji-Woo.
Not an imitation.
But Ji-Soo.
Different presence.
Same face.
Sharper energy.
Ji-Woo, still sitting at her desk nearby, muttered under her breath—
"…Seriously?"
Ji-Soo glanced at her and smiled faintly.
Then looked back at Mi-Sook one last time.
Before turning toward the door.
As she walked out, Min-jun was waiting outside.
He leaned casually against the wall.
And whistled low.
"Wow," he said. "That was actually impressive."
Ji-Soo didn't even slow down.
"Let's go," she said simply. "Before someone recognises me properly."
Min-jun followed with an amused grin.
Inside the classroom, Mi-Sook stood frozen.
Humiliated.
Breathing unevenly.
Watching the door Ji-Soo had just walked out of.
And for the first time—
she wasn't angry.
She was shaken.
Because that wasn't just a threat.
That was a promise.