The rumbling beneath their feet grew stronger with each passing second. Dust poured from the towering stone doorway as ancient cracks spread across its weathered surface. The silver symbols carved into the stone shone brighter until the entire clearing was bathed in an ethereal light.
Kael instinctively stepped back, his hand resting on the hilt of his sword.
"What did you do?" Finn asked, his voice trembling.
"I don't know," Kael replied honestly. "I only touched it."
A deafening crack echoed through the ruins.
The stone doorway split down the middle.
Centuries of dust burst into the air as the two halves slowly slid apart, revealing a narrow passage descending into darkness.
No one spoke.
Even Marcus, who had insisted on searching for the ruins, stared silently at the newly opened entrance.
"So..." Finn finally muttered. "Anyone else thinking this is a terrible idea?"
Darren nodded without hesitation.
"Absolutely."
Marcus, however, was already smiling.
"This place hasn't been opened in who knows how long."
"Which means?" Elena asked.
"It means whatever's inside has probably been waiting there for centuries."
Kael looked toward the dark passage.
His instincts warned him to leave.
Every lesson his father had taught him echoed in his mind.
A Hunter survives by knowing when not to take unnecessary risks.
They already had the Monster Core.
They had already passed the trial.
There was no reason to continue.
Yet something inside him stirred.
A strange pull.
Not a voice.
Not a command.
Just a quiet feeling urging him forward.
Marcus noticed his hesitation.
"We'll only take a quick look," he said. "If it seems dangerous, we leave immediately."
Finn sighed dramatically.
"I've heard those exact words before every bad decision I've ever made."
Despite his complaint, he followed the others.
The passage sloped gently downward. The air grew noticeably colder with every step, while faint blue crystals embedded in the walls provided just enough light to guide their way.
Unlike the ruins outside, this corridor remained untouched by time.
No collapsed ceiling.
No broken walls.
Not even dust.
It was as though someone had built it yesterday.
The silence became almost unbearable.
Even their footsteps seemed strangely muted.
After several minutes, the corridor opened into a circular chamber.
Everyone stopped.
The room was enormous.
Stone pillars taller than trees supported the ceiling high above, each engraved with symbols none of them recognized. At the center of the chamber stood a single black pedestal.
Resting upon it was a crystal no larger than a human heart.
Unlike the blue crystals lining the walls, this one absorbed light instead of reflecting it.
It wasn't glowing.
It was darkness given form.
Finn swallowed hard.
"That's... unsettling."
Elena frowned.
"I've never seen anything like it."
Marcus slowly approached the pedestal.
"This has to be some kind of relic."
Kael remained where he was.
The strange sensation from earlier had returned.
Only now it was much stronger.
His heartbeat quickened.
The black crystal seemed strangely familiar despite the fact he had never seen it before.
Then something impossible happened.
The crystal pulsed.
Once.
A wave of invisible energy swept through the chamber.
Everyone felt it.
Marcus stopped walking.
Darren frowned.
Even Elena lowered her bow.
Kael's chest suddenly burned.
Not with pain.
With recognition.
The crystal pulsed again.
This time, it floated into the air.
Finn's eyes widened.
"Did... did anyone touch it?"
"No," Darren answered quietly.
The crystal slowly turned.
Not toward Marcus.
Not toward the others.
Toward Kael.
Every pair of eyes followed its movement.
Kael instinctively took a step backward.
The crystal drifted closer.
Another step.
It continued following him.
Marcus stared in disbelief.
"It's choosing someone."
"What does that mean?" Finn whispered.
No one answered.
The crystal stopped directly in front of Kael.
For a brief moment, everything became completely silent.
Even the faint hum of the chamber disappeared.
Kael found himself staring into the endless darkness contained within the crystal.
Countless tiny lights swirled deep inside it like distant stars scattered across an infinite night sky.
Without understanding why, he slowly raised his hand.
The moment his fingers touched the crystal, warmth spread through his entire body.
Instead of feeling cold like stone, it felt alive.
The black surface dissolved into countless streams of dark light.
Before anyone could react, the light rushed into Kael's chest.
His eyes widened.
The chamber shook violently.
The black crystal vanished completely.
Only the empty pedestal remained.
Kael stumbled backward, grabbing his chest.
"What... what happened?"
He searched himself frantically.
There was no wound.
No mark.
Nothing.
"It disappeared," Elena whispered.
Marcus's expression slowly changed.
The excitement on his face faded.
Confusion replaced it.
Then confusion gave way to something else.
Greed.
His eyes never left Kael.
"You absorbed it."
"I didn't," Kael said immediately. "I don't even know what happened."
"But it went into your body."
"I couldn't stop it."
Marcus remained silent.
Finn scratched his head awkwardly.
"Maybe it'll come back out?"
No one laughed.
Kael looked at his friends.
Something felt different.
Marcus wasn't looking at him anymore.
He was looking through him.
As though calculating something.
Darren avoided Kael's eyes.
Elena quietly lowered her bow.
The atmosphere inside the chamber became noticeably heavier.
Kael forced a smile.
"Whatever that crystal was, we should report it to the Hunter Association."
Marcus looked at him for a long moment before nodding.
"You're right."
His voice sounded calm.
Too calm.
"We should leave."
The group turned toward the corridor.
Kael walked a few steps behind them, still trying to understand what had happened.
He didn't notice Marcus exchanging a brief glance with Darren.
Or the almost invisible nod Elena gave.
Only Finn appeared genuinely confused.
As they disappeared into the ancient passage, the empty pedestal remained silent.
Deep beneath it, hidden below layers of black stone, an ancient mechanism slowly awakened after lying dormant for countless ages.
And far ahead, beyond the narrow corridor leading back to the forest, four hearts had already begun to weigh the value of friendship against the promise of unimaginable power.