At that moment, the monster leader suddenly stopped.

"Roar!"

The monster leader burst into a huge roar, its eyes blood-red with immense anger, turning to look in the direction of Black Iron Castle.

"What’s happening?"

Liuli was in a somewhat bad mood.

Noticing Liuli’s displeasure, the monster leader shuddered, seemingly very afraid, and instantly retracted its wildly raging aura.

Simultaneously, it communicated with Liuli through mental telepathy.

After a while, Liuli’s eyes became increasingly dangerous.

Even a terrifying aura began to swirl around him:

"Ah, so they really all hid themselves away!"

"A structure similar to a safehouse, but larger than a safehouse, a castle?"

"And they can even kill level five monsters?"

"It seems the trial participants have indeed improved their strength quite fast!"

"Who is the trial participant that killed the level five monster? That Waldo?"

"Heh, it must be you." "Very well, worthy of being the trial participant I most want to kill, indeed different from the others."

"Very good, very good, I’ve decided, I will make you the first to die! And I will ensure that you die more painfully than any other trial participant!"

"Hehehe..."

Liuli’s cold laughter was unspeakably terrifying.

Anyone who saw this would probably feel their scalp tingle, their body turn cold, and their limbs tremble.

He reached out, gently stroking the monster leader’s small head, as if petting his own cat or dog.

And the monster leader was very cooperative.

However, upon closer observation, it would be noticed that the monster leader’s slender body was trembling slightly.

It seemed to be out of fear and terror.

It’s hard to imagine that a level six monster leader would be so terrified of a level five divine being like Liuli, who is of a lower rank than itself.

"Let’s go, you lead the way. I want to see just how tough this Black Iron Castle is! And that Waldo, don’t disappoint me! Otherwise, your death will be very, very miserable!"

Liuli’s voice was ice-cold, as if turning the surroundings into a world of ice and snow.

The slender body of the monster quivered and then darted out like lightning.

Dragging a faint afterimage, it rushed towards the distance.

And Liuli followed suit...

At this moment, they were only a little over three hundred kilometers from Black Iron Castle.

For them, this was not a long distance.

At most, it would take an hour or two to arrive.

Soon.

Black Iron Castle would face an unimaginably terrifying disaster!

Both Liuli and the monster leader were exceedingly fearsome.

The trial participants were simply powerless to resist.

...

In Black Iron Castle, in the secret chamber.

Waldo devoted all his heart and mind to his advancement.

At this moment, the purple energy inside the chamber was extremely abundant.

Like a tangible substance, it surged like waves.

The rich purple energy was incredibly pure, filled with vitality and vigor.

Like an ocean, with waves undulating and crashing against the walls of the chamber.

At the center, Waldo, with his upper body bare, revealed a perfectly sculpted, muscular physique.

His muscles and bones, strong and powerful like dragons, undulated.

His body and organs had already completed the transformation into an undying form.

Only his head remained to be transformed.

Compared to the previous two transformations, this one for the head was even more dangerous and difficult.

"No matter, I must take the risk!"

Waldo’s sense of crisis grew stronger and stronger...

"At this stage, my body is already quite formidable. Even if my limbs are severed or my heart is shattered, I can regenerate them..."

"But my head is my fatal weakness."

"Only by advancing to level five and transforming my head into a part of the undying body, possessing a complete undying form, will I truly be invincible."

"Moreover, transforming my entire body into an undying form will take my strength to an even higher level."

"An undying body, doing as I wish!"

Boom!

The purple energy surged, and in the void, streaks of lightning appeared.

Dense and numerous, they contained astonishing power.

Flashing, they struck towards Waldo’s head.

Hiss, hiss, hiss...

Thunderclouds gathered, and lightning serpents slithered.

They caused tumultuous waves in Waldo’s mind.

On the surface, Waldo appeared calm and composed.

But inside his mind, the sounds of thunderous crashes echoed.

...

This was destined to be a long and perilous process.

A single misstep, and Waldo could end up a fool, it wasn’t impossible.

Unbeknownst when, a golden vortex appeared at Waldo’s forehead, with terrifying lightning flickering within it.

Upon closer inspection, it seemed as if there was another world within.

Lightning was generated there.

And also, a vast ocean.

Golden waves rose and fell.

Surrounding it were the sounds of roaring waves crashing against the shore and thunder flashing and rumbling.

Majestic and deafening.

Within it, there were numerous miraculous phenomena, looking extremely extraordinary.

Golden light and purple energy, centered around the forehead, spread outwards.

Flowing like water...

"Almost there, it shouldn’t take too much time!"

Waldo murmured to himself.

He opened his eyes, and it seemed as if two profound purple suns appeared in his pupils.

Dazzling and captivating, permeated with a terrifying aura.

If anyone were to see these eyes, they would likely be drawn into the incredibly magnificent scenery within them.

Entranced by it, unable to extricate themselves!

Suddenly, the purple suns within Waldo’s eyes extinguished.

As if the sun had fallen, the world destroyed, they exuded a terrifying aura of destruction.

His eyes became unprecedentedly pitch-black, emitting a heart-palpitating aura of destruction...

Waldo’s head was undergoing tremendous changes in this transformation.

Not just a physical change on the surface, but also a sublimation of the spirit and soul.

Transforming the head into a part of the undying body was always the most dangerous and difficult step.

At the same time, it was the step with the greatest change.

As long as Waldo persisted, it wouldn’t be long before he achieved his goal.

A level five trial participant...

Perhaps it was not far off!

Just as Waldo was at the final and most critical moment of advancing to a level five trial participant,

Black Iron Castle reached a critical juncture!

"Bad news, something’s approaching from the west!"

"They’re so fast, they’re about to reach us!"

"What the hell, such a powerful aura!"

"Damn it, it’s that level six monster and Liuli! It’s over, Waldo is still in seclusion, and Liuli with that level six monster are already here! We’re done for, completely done for!!!"