'I can't advance any further.'

Klein looked into the sky and instantly made a decision.

Klein still remembered the system's notification.

Not only was this crypt creature's blood magic extremely destructive, it even had a lasting effect.

Although Klein had advanced to tier 8 and his physical strength had increased a lot, he still didn't dare to be careless.

This was because the magic skills of these crypt creatures were likely terrifying innate spells.

Innate spells were the strangest.

Klein had felt their power time and time again.

For example, the Stone of Destruction stood on the earth with infinite magic power.

The Armored Scorpion could quickly burrow into the ground and come out.

As well as the Rouge Archer's invisibility and so on, all of them had brought great trouble to Klein.

If he couldn't find a solution, Klein would be exhausted to death!

And the traitor in front of him, Zekos, clearly had quite a strong innate ability.

With this thought in mind, Klein stopped in his tracks. He slashed with his Endless Sword, and instantly, huge stone walls rose up, wrapping around Klein.

Whoosh--

Whoosh--

Bang!

The blood bubble in the sky had arrived.

The accelerated blood bubble was like a cannonball as it continuously smashed into Klein's stone wall.

However, Klein's stone wall was very powerful. It had the power to resist elemental explosions, so it naturally easily withstood the attack of the blood bubble.

However, just as Klein was relieved and was about to think of how to approach the traitor, Zekos, he suddenly heard a sound above his head.

He suddenly looked up.

He saw that the stone wall above his head had been corroded by blood bubbles. At this moment, blood bubbles the size of a fist had gathered and were about to fall.

"It's that terrifying?"

Klein's expression changed drastically.

He had already thought highly of the traitor's magic.

He never expected that he would still underestimate her in the end.

She could even corrode a stone wall that could withstand elemental explosions. The power was simply terrifying.

If it were to drip on a human, it would be terrifying!

With this in mind, Klein sucked in a breath of cold air and hurriedly flew away.

Following that, the blood bubble that had gathered completely smashed down, making a sizzling sound as it fell to the ground. There were even wisps of smoke and dust rising up.

...

At this moment, the traitor, Zekos, couldn't help but heave a sigh of relief when she saw that Klein's footsteps had been blocked.

But then, a mocking look appeared on her face.

Especially when she saw that Klein was being protected by a turtle shell, her expression became even more unrelenting.

"Hmph, do you think you can block it just like that? You must be dreaming."

Then, the traitor, Zekos, crossed her hands again and muttered to herself. A magical fluctuation slowly appeared in front of her.

Before long, the magical fluctuation grew stronger and stronger. Soon, a blood bubble the size of half a basketball court appeared.

After the blood bubble had finished accumulating, the betrayer, Zekos, extended her hands and controlled the blood bubble to come to the top of her head. Then, she pointed it at Klein and softly said, "Go."

In an instant, the blood bubble covered the turtle shell where Klein was.

Klein's expression changed when he sensed the magical fluctuation from the outside world.

'Not good! This magical fluctuation isn't ordinary!'

With this in mind, Klein didn't dare to be careless.

Then, he stabbed the sword into the ground and activated all the magic in his body as he crazily injected it into the blade of the Endless Sword.

There was a cracking sound.

The ground was like an eggshell that had been cracked open.

Soon, tall stone walls began to stretch out.

After doing all this, Klein wanted to continue casting magic, but he suddenly felt his head go dizzy and nearly fell over.

"Oh, what's going on?"

Klein's expression changed.

He hadn't cast much magic, so there shouldn't be such a situation!

'No, that crypt creature's blood bubble is poisonous!'

Realizing this, Klein looked at the blood bubble that dripped down from the stone wall. The dripping blood bubble fell to the ground with a splat and emitted traces of poison gas.

The poison gas was very faint, and its form could barely be seen.

It was fine if it was in an open area. It couldn't bring any trouble to Klein.

However, Klein had used the stone wall to build a turtle shell, a completely sealed place.

In such a place, once the poison gas seeped in, Klein had nowhere to hide!

'Damn it, how troublesome!'

Klein hurriedly suppressed the poisonous gas in his mind.

Then, he brandished his Endless Sword and sliced through the turtle shell in front of him.

At that moment, the blood bubbles in the sky had completely disappeared.

The place where Klein was standing had completely turned into a blood-colored lake.

If not for the sealed stone wall that Klein had previously created, Klein probably wouldn't have any place to stand.

However, after Klein removed the stone wall, the blood pool swarmed over.

Klein didn't dare to be careless as he leaped into the air.

Then, he looked down and saw countless wisps of green smoke rising from the blood lake. The density was many times greater than before.

"Not good!"

Klein felt a bout of dizziness once again.

At this moment, Klein was in the middle of the blood lake. The water vapor in the blood lake was being evaporated by the heat waves in the sky, and Klein, who was above the blood lake, was naturally surrounded by the poisonous gas.

As a result, he had once again increased the degree of his poisonous gas infection.

[System notification: Poisonous Gas+1]

[System notification: Poisonous Gas+1]

[System notification: Poisonous Gas+1]

...

Looking at the system notification, Klein knew that he couldn't continue like this.

Otherwise, he would completely faint in a few minutes. By then, he would definitely die!

With this in mind, Klein's body began to churn with magic. Following that, he waved his Endless Sword and conjured a Whirlwind out of thin air.

The Whirlwind that appeared instantly swept away the poison gas in front of Klein, leaving him with a precious habitat.

However, Klein's crisis wasn't over yet.

At this moment, the blood bubble that had been thrown over by the betrayer, Zekos, had accumulated enough heaven and earth elements in the air. Its area had changed from half the size of a basketball court to the size of a basketball court. Furthermore, it was still growing rapidly.

After growing, the blood bubble appeared above Klein and completely blocked the sunlight above him.

It also emitted a terrifying destructive power.

Sensing the strange movement above his head, Klein couldn't help but look over.

When he saw a blood bubble the size of a football field, Klein's expression changed.

"Not good!"

"If this falls, I won't have any chance of survival!"

With no other choice, Klein could only flee at high speed in an attempt to avoid the blood bubble in the sky.

He had experienced the power of the blood bubble. Once he was hit, he might not even be able to withstand the subsequent burns, much less be killed by the explosion.

This wasn't because Klein was being modest. After all, this thing could even corrode a stone wall fused with metal and earth elements.

Therefore, Klein didn't dare to use his body to withstand it.