The moment the voice echoed through the chamber, everything changed.
It did not come like a sound carried by air, nor like something spoken from a mouth. It existed everywhere at once—inside the walls, within the ground, and most disturbingly, inside their minds. The words lingered, heavy and ancient, as though they had been waiting for countless years just to be heard again.
Lina's body went still.
Not frozen by fear, but held in place by something far stronger.
The light beneath her skin brightened, no longer faint or unstable, but flowing with a steady, undeniable rhythm. It spread from her arm to her shoulder, then across her collarbone like glowing veins, pulsing in perfect synchronization with the energy radiating from the massive door before them.
Kai felt it instantly.
That connection.
That unnatural resonance between her and the thing buried beneath the city.
His grip tightened around her wrist.
"Lina," he said, his voice low but firm, "look at me."
For a brief moment, she didn't respond.
Her gaze remained locked on the door, drawn toward it as if something beyond it was calling her by name.
Then slowly—very slowly—her eyes shifted.
They met his.
And in that instant, Kai saw something that made his chest tighten.
Not fear.
Not confusion.
Recognition.
"…I can hear it," she whispered.
Her voice was soft, almost distant, but clear enough to cut through the tension in the air.
Kai's expression hardened. "Hear what?"
Lina's lips parted slightly as if she were trying to understand it herself.
"…It's not just a voice," she said. "It's… memories. Fragments. Like something is trying to show me things I've never seen before."
The ground trembled again, more violently this time. Small cracks spread across the chamber floor, crawling outward from the base of the door like fractures in reality itself.
Kai pulled her slightly back.
"We're leaving," he said.
But even as the words left his mouth, he knew—
It wouldn't be that simple.
The door pulsed.
Once.
Twice.
Then the surface shifted.
Not opening fully, but moving—like something behind it had pressed forward, testing the boundary that held it back.
A low, deep sound followed, something between a breath and a growl, vibrating through the entire chamber.
Lina staggered slightly.
The light within her flared brighter in response.
Kai stepped closer, steadying her. "Stay with me."
"I'm trying…" she murmured.
But the connection was growing stronger.
The patterns across the door began to move faster now, the glowing lines twisting and converging toward a single point at its center. And as they did, Lina's breathing grew uneven again, her body reacting as though the energy inside her was being pulled outward.
"Kai…" she said, her fingers tightening weakly against his arm.
He didn't hesitate.
This time, he didn't just hold her—
He stepped directly between her and the door.
The reaction was immediate.
The pull weakened.
Not gone—
But disrupted.
The light around Lina flickered, the rhythm breaking just enough for her to gasp in a full breath.
Kai's eyes narrowed.
"…So it's targeting you directly."
The realization settled quickly.
Whatever was behind that door—
It wasn't just reacting to her.
It needed her.
The voice came again.
Clearer this time.
Closer.
"Key… synchronization incomplete…"
The chamber shook violently.
Fragments of stone fell from above, shattering against the ground as the pressure in the air rose sharply.
Kai's stance lowered slightly, his body instinctively preparing for impact.
"…We don't have time," he said.
Lina nodded weakly, forcing herself to focus despite the pull.
"What do we do?"
Kai didn't answer immediately.
Because there was only one option—
And he didn't like it.
He looked at the door again, then back at her.
"…We break the connection."
Lina's eyes widened slightly. "How?"
Kai's expression didn't change.
"…Before it finishes forming."
The energy around him began to rise.
Not wildly like before.
Not out of control.
But focused.
Deliberate.
The shadows that once lashed out uncontrollably now gathered around him in a tighter form, responding to his intent instead of overwhelming it.
For the first time—
He wasn't losing control.
He was using it.
The air around them distorted slightly as his power built, pressing outward against the force coming from the door.
Lina felt it.
That difference.
"…Kai… you're controlling it."
"I have to."
The door reacted immediately.
The light across its surface flared violently, as if resisting him.
The pulse beneath the ground grew faster.
Louder.
Closer to breaking.
"Interference detected…"
Kai stepped forward.
Each movement felt heavier, like the air itself was trying to hold him back. But he didn't stop.
He couldn't.
Because if that thing—
Whatever it was—
Fully connected with Lina…
There would be no turning back.
The distance between him and the door closed.
Five steps.
Four.
Three.
The pressure intensified.
Two.
The ground beneath him cracked.
One—
He raised his hand.
And struck.
The impact didn't shatter the door.
But it did something else.
It disrupted it.
The glowing patterns scattered instantly, breaking their perfect alignment. The pulse lost its rhythm, stuttering like something choking on its own breath.
Lina gasped sharply as the light beneath her skin flickered violently—
Then weakened.
The connection snapped.
Not completely.
But enough.
The chamber fell into sudden, heavy silence.
The pressure vanished almost instantly.
Kai staggered slightly but remained standing.
Lina dropped to one knee, breathing hard, her body finally her own again.
The door—
Went still.
The light dimmed.
The movement stopped.
But it did not disappear.
It waited.
Kai exhaled slowly, his eyes still locked on it.
"…That wasn't the end."
Behind him, Lina managed a weak but steady voice.
"…No."
She looked at her hand.
The glow was still there.
Faint.
Quiet.
But alive.
"…It's still connected."
Kai didn't deny it.
Because he could feel it too.
A thread.
Thin.
Invisible.
But real.
Linking her—
To whatever was behind that door.
And this time…
It wasn't reaching blindly anymore.
It had found her.
Far above, the city had already begun to react.
And this time—
They were not waiting.
Deep below—
The door remained closed.
But no longer silent.