Golden Firestorm Saber.

Fire elemental slash!

Three fire blades instantly flew towards the Mask Monster.

"It's useless, heh heh."

The Mask Monster laughed.

"This kind of attack is completely useless to me."

"I just wanted to slightly interrupt your voice attack."

Klein said slowly, and the Golden Firestorm Saber in his hand instantly released a powerful heat wave!

The huge heat wave raised the temperature of the underground cave.

As it changed the density of the air, the sound attack weakened slightly.

At the very least, it didn't cause Klein much pain.

"It's time to take action."

Klein's heart throbbed, and he instantly flew into the air.

He continuously released fire elemental missiles at the Mask Monster's feet.

These fire elemental missiles smashed into the ground.

The ground instantly exploded.

Countless pits were instantly formed on the shattered ground.

The Mask Monster instantly sank.

"What is this?"

The Mask Monster had a disdainful look on his face.

"Don't play any tricks. You have to know that your little tricks are tricks that can not be any weaker in my opinion."

The Mask Monster didn't even feel a ripple in his heart when he saw Klein like this.

Klein smiled and said, "Alright, I don't plan on using these little tricks to get rid of you."

"You have to know that I have many ways to deal with people like you."

The Mask Monster looked at Klein and said, "Where did you get such confidence from? Your little tricks are completely useless against me."

"Heh heh, my confidence comes from my strength. You might not know this at all, but I'm really much stronger than you," Klein said with a smile. At the same time, the fire elemental missiles in his hands smashed large craters into the ground.

'What is all this?'

'Again?'

The Mask Monster was somewhat speechless.

'Is this guy's brain damaged?'

'I already said that these moves are useless against me.'

'And he's still using such an attack?'

The Mask Monster was getting impatient.

"That's enough. This little trick of yours, hurry up and die!"

The Mask Monster knew that his Depressed Mask was useless against Klein.

In that case, he could only change his clothes and mask.

He was now extremely furious!

He switched to the Mask of Fury.

A huge flame instantly smashed towards Klein!

Elemental Firestorm Saber.

Absorption!

These flames were completely absorbed by Klein.

The flames that were absorbed completely disappeared.

"Hehe, I didn't expect you to be so proficient in flames."

The Mask Monster gave a strange laugh.

"However, my flames aren't that simple."

With that said, the Mask Monster once again spat out a ball of flames from its mouth.

This ball of flames was extremely huge, completely surrounding Klein.

Furthermore, Klein realized that these flames weren't ordinary at all.

They were those blue flames.

"Ghost flames?"

"That's right."

The Mask Monster gave a strange laugh.

"This kind of ghost flames are different from ordinary ghost flames."

"One has to know that this kind of ghost flames can absorb the yang energy in your body."

"It will cause your kidneys to fail and die."

"It won't burn you."

"Instead, it would slowly deplete the yang energy in your body and corrode you from the inside."

The Mask Monster spoke with a sneer.

Its voice was filled with mockery.

"Heh heh, is that what you think?" Klein said with a smile.

His expression was very confident.

"What?"

The Mask Monster didn't expect Klein to have such a reaction.

It had thought that Klein would be very afraid.

He might even beg for mercy.

Then, it could toy with him to its heart's content.

In the end, it would kill him.

'Where did this fellow get his confidence from?'

'At this level, he has the nerve to show off in front of me?'

The Mask Monster was completely speechless.

Wait a minute?

The Mask Monster suddenly realized that the flames around Klein had disappeared.

That's right, they had completely disappeared.

What was going on?

This ghost flames would only completely disappear after it had completely absorbed the other party's yang energy.

Otherwise, it would never have disappeared.

But at the moment, Klein was completely fine.

This meant that Klein definitely still had a lot of yang energy.

But how did this ghost fire completely disappear?

'Impossible!'

'Absolutely impossible!'

The Mask Monster had never encountered such a situation before!

Its mind suddenly turned chaotic.

This was a situation that it had never imagined.

At this moment, it was momentarily stunned!

It didn't know what to do.

"Then, it's my turn next."

Klein picked up his Golden Firestorm Saber and instantly ran towards the Mask Monster.

"Don't you know? This move is completely useless against me! Don't waste your energy!"

The Mask Monster felt that he was completely out of his mind.

Although it also felt that this person was very strange, that was right.

The Firestorm Saber smashed into the Mask Monster's body.

The Mask Monster instantly blocked it.

It didn't hurt at all!

Even if the Firestorm Saber was still burning, it was useless.

It didn't hurt at all!

"Can you just die?!"

The Mask Monster instantly released its ghost fire again!

It didn't believe that the ghost fire couldn't hurt Klein in the slightest.

But strangely, the ghost fire didn't even hurt Klein.

It only lasted for less than a second before it completely disappeared!

What was this feeling?

The Mask Monster was really depressed this time.

It could be said that the previous Mask Monster was just pretending to be depressed.

That was the ability of the mask!

But now, it had really been shut down by Klein.

"Wait, the Charm Mask doesn't seem to be of any use to this fellow. Since that's the case, Mask of Fear!"

The Mask of Fear was different from the Mask of Despair. The Mask of Fear directly released terrifying elements, making the other party feel fear!

As long as the other party had normal five senses, they would definitely be intimidated by the terror element.

They would be infected, and then they would feel fear!

However, when it released the terror element again, Klein had no reaction at all.

The Mask Monster was shut down again.

'How can this be?'

'This fellow shouldn't be like this. Shouldn't he feel fear and hide in a corner?'

Even under the torture of fear, he would die of fear.

However, Klein's reaction greatly exceeded the Mask Monster's expectations.

'It's too strange!'

'It's really too strange!'

'So the two of us really can't hurt each other?'

This was the first time the Mask Monster had encountered such a situation.

How should it be resolved?

It really left it speechless.

"No!"

"You must die today!"

"I don't believe it!" the Mask Monster roared.

It decided to unleash its trump card!

Its strongest mask!

The White Mask!

This White Mask will enter the opponent's inner world and find out the opponent's most painful memories!

And play them back and forth in the opponent's mind until the opponent's spirit breaks down!

This move was invincible.

At least, the Mask Monster had never failed once.

The reason why it was hesitant was that this move also required it to pay a price.

This price was not small.

Because it also needed to feel the other party's mental pain.

Only, this mental pain would cause real harm after the other party felt it.

And it would only feel it, but it wouldn't actually cause harm to the body.

But it was also very uncomfortable.

However, in order to kill Klein...

It decided to use this move.

White Mask!

Mental attack!