Nyx had long since lost track of time.
There was no sun to rise or fall in this strange world, no shadows stretching to mark the passing hours. The sky above remained a shifting canvas of unnatural colors, and the ground beneath his feet pulsed like something alive. In this place, time didn't matter.
Only survival did.
And Nyx was still standing.
Barely.
His legs trembled beneath him, muscles stretched far beyond their limits. Every part of his body screamed in protest, yet he refused to fall. His breathing was uneven, sharp and shallow, each inhale dragging against the invisible weight pressing down on his chest.
The pressure hadn't lessened.
If anything, it had only grown worse.
It clung to him constantly, like the world itself was testing him, pushing him, trying to crush him into nothing. It was relentless. It gave him no space to rest, no moment to recover.
But Nyx had stopped expecting mercy a long time ago.
Slowly, he shifted his weight.
Even that small movement caused the pressure to react, pressing down harder as if punishing him for trying to adapt. His knees bent slightly, his balance faltering for just a second before he forced himself steady again.
He exhaled quietly.
"So it reacts…" he muttered under his breath.
That was something new.
Everything here responded to him. Not randomly, but deliberately. Like it was watching. Measuring.
Testing.
Nyx tightened his jaw. If that was the case, then there had to be a way to move without triggering it too violently.
He lowered his stance slightly, adjusting his balance before trying something new.
Carefully, slowly, he lifted his foot.
The moment it left the ground, the pressure surged.
His body trembled violently, his muscles nearly giving out under the sudden increase. Instinctively, he dropped his foot back down, catching himself just before he collapsed.
A sharp breath escaped him.
"…Too fast."
He stared at the ground for a moment, thinking.
Then he tried again.
This time, he moved slower.
Much slower.
He lifted his foot inch by inch, controlling his breathing, focusing on every small movement. The pressure still increased, but not as violently as before.
Nyx's eyes narrowed slightly.
"…I see."
It wasn't just about strength.
It was about control.
With careful effort, he moved his foot forward and placed it down.
The moment it touched the ground, a faint crack spread beneath him. A low vibration followed, like something deep within the earth had responded.
Then the pressure doubled.
Nyx's body dropped instantly.
He hit the ground hard, pain exploding through his entire body. His broken arm slammed against the surface, sending a wave of sharp agony through him.
For a moment, his vision went white.
His chest tightened, breath caught somewhere between pain and shock.
"…Why…" he muttered weakly.
"This is not your world."
The voice answered calmly inside his head.
"The rules are different."
Nyx let out a slow, strained breath.
"…No kidding…"
His body didn't want to move anymore. It had reached its limit. Every muscle burned, every joint ached, and his arm throbbed with constant pain.
But something inside him refused to stop.
His fingers pressed against the ground.
Slowly, painfully, he pushed himself up.
His arms trembled violently under the strain, but he didn't stop. Not this time.
He rose to his knees first, pausing briefly to steady himself before forcing his body upright again.
Standing.
Again.
His breathing was worse now, shorter, sharper. Sweat clung to his skin, his body struggling to keep up with the constant strain.
But his eyes remained steady.
Focused.
"…Again."
The word came out low, almost instinctive.
And this time…
Something answered.
Not the pressure.
Something inside him.
Nyx froze for a moment.
A pulse echoed deep within his chest.
Slow.
Heavy.
Not his heartbeat.
Something else.
"…What is this…"
He pressed his hand lightly against his chest, feeling it again.
Another pulse.
Stronger this time.
The air around him shifted slightly.
Even the pressure seemed to hesitate, just for a brief moment.
Then the cracks appeared.
Dark lines spread beneath his skin, faint at first but growing more visible with each passing second. They stretched from his chest down his arm, across his shoulder, flickering like something unstable.
Nyx stared at them.
"…This…"
Pain surged again, stronger than before.
But it wasn't the same kind of pain.
It didn't feel like damage.
It felt like something was changing.
His body tensed as the pressure around him reacted violently, increasing once more. His legs buckled under the weight, but this time, he didn't fall immediately.
He held it.
Even as his muscles screamed.
Even as the cracks spread further across his skin.
The pulse in his chest grew faster, stronger, louder.
Nyx clenched his teeth.
"I'm not… breaking…"
His voice came out strained, barely steady.
"I'm changing…"
The ground beneath him trembled faintly.
For a moment, the pressure wavered.
Just for a second.
Nyx felt it.
A slight shift.
Like the world itself wasn't sure how to respond.
Then it returned.
Stronger than before.
His body finally gave out, dropping to the ground once again.
But this time, something was different.
The impact didn't feel the same.
It still hurt.
But less.
His body absorbed it better, adjusting in a way it hadn't before.
Nyx's eyes widened slightly.
"…So that's it…"
He understood now.
This wasn't just about enduring pain.
This was transformation.
Everything here was forcing him to adapt, to evolve beyond what he was before.
Slowly, he pushed himself up again.
This time, faster.
Stronger.
His broken arm still hurt, but it moved slightly now. Just enough to support him for a moment before he shifted his weight again.
The cracks flickered once more, then faded.
But the feeling remained.
Nyx stood again.
Breathing heavily, body still trembling, but more stable than before.
"…Again."
This time, when he stepped forward, he didn't hesitate.
The pressure surged.
But he endured it longer.
Much longer than before.
He fell again.
But even as his body hit the ground, his mind was already preparing to rise again.
And again.
And again.
From a distance, the Aetherborn watched silently.
Their expressions didn't change, but their attention was fixed entirely on him now.
"The evolution has begun."
Nyx didn't hear those words.
But deep within him…
Something answered.
Something that did not belong to this world.