Chapter 421 King Ao's Assistance
Some of the five siren heads release terrifying sound waves, while others emit cold light.

Most of Leo and Astra's bodies were frozen, and they were also destroyed by the sound waves, which was undoubtedly extremely painful.

Just then a siren head rushed over at full speed, punching Leo and Astra in the chest with both fists.

Knock them both out.

"Woo, Astra, are you okay?"

Leo sat up, stroking his chest and ears, and quickly helped Astra up.

"Luckily, they are very strong, much stronger than the monsters we encountered before."

Astra was panting as she spoke, and it was obvious that she was seriously injured.

"Kill them all in one go! Use the Kaio-ken I taught you!"

Leo clenched his fists. He didn't want to delay any longer and had to kill the Siren Heads quickly.

"it is good!"

Astra nodded vigorously, then concentrated on adjusting the strength in her body.

He is not very proficient in using the Kaio-ken yet, so it will take some time.

Leo took this time to take a step forward and placed his hands in front of the timer.

"Ahhhhh!!"

As Leo shouted, his whole body emanated an extremely dazzling light.

The strong light was so blinding that the Siren Heads couldn't open their eyes, and they couldn't help but raise their hands to cover their eyes.

"Ten times Kaio Fist!"

At this time, Astra finally used the Ten Times Kaio-ken, increasing all his strength to ten times in one breath!
"Ten times Kaio Fist!"

Seeing this, Leo also used the Ten Times Kaio-ken.

Then Astra knelt in front of Leo and raised her hands. Leo immediately stretched out his hands and pressed them tightly against Astra's hands.

The energies of the two Ultramen are concentrated together to launch the Ultra Double Flash!
A huge crimson beam of light was about to hit the five Siren Heads who were protecting their eyes.

This looks like it should be easy to hit them.

However, in the next second, something unexpected happened.

That is, a space appeared in front of the five siren heads, and the light was sucked away by the space and disappeared.

"what!"

Seeing this scene, Leo and Astra couldn't help but feel extremely surprised, and for a moment they didn't understand what was going on.

I saw a siren head slowly crawling out from the crack that was created by Leo's light.

It turns out that a siren head fell into the ground at that time and has not appeared until now.

It just so happened that he was underground and was not affected by the light released by Leo just now.

So it can distort space to absorb light.

"how so!"

Leo and Astra didn't expect such a turn of events to happen.

Just as they were surprised, the siren head shook his hands slightly.

The light that is sucked away by the distorted space is emitted in the opposite direction.

Attack the Leo brothers!

Seeing this, Leo and Astra hurried to hide.

But at this moment, the five siren heads emitted a cold light at the same time.

Freezing Astra and Leo's feet, making them unable to dodge.

I'm about to be hit by my own double light!
This is the result of the combined efforts of Leo and Astra, and it is a double beam used in the 10x Kaio-ken state.

If they were to get hit, they would probably be either dead or disabled!

At this critical moment, a huge red cloak appeared out of nowhere.

Floating in front of Leo and Astra.

It was this ordinary-looking cloak that blocked the double flash.

No matter how powerful the double flash is, it cannot break through the cloak's defense!
"Um!?"

Leo and Astra looked at the cloak that was protecting them with confusion, not realizing what was going on.

When the cloak completely canceled out the light, it automatically moved closer to Leo and touched Leo's right arm, then turned into a bracelet and attached itself to Leo's arm. "What is this!?"

Leo looked at the bracelet on his arm, confused.

"This is my gift to you, Prince of L77."

An old voice came.

I saw an old-looking Ultraman appear next to them at some point.

"Who are you? Are you also Ultraman?"

Astra asked confusedly.

"Me? According to you, I am also Ultraman. They all call me the king. I am called the King of Ultra."

The King of Ultraman introduces himself.

Leo and Astra were both shocked to hear his title.

However, the King of Ultra ignored their surprise.

Instead, he looked at the six Siren Heads in front of him.

"Humph!"

The King of Ultra just pushed with both hands.

A violent flash of light was released from the palm of his hand.

"Bang Bang Bang!!!"

The next second, sparks exploded all over the bodies of the six Siren Heads.

They twisted their bodies in pain and retreated repeatedly.

"It's now!"

After King Ultra used this move, he stopped taking action and looked at Leo and Astra!
Seeing this, Leo and Astra immediately stood up and used Double Flash again.

"Ten times Kaio-ken! Ultra Double Flash!"

Leo and Astra used Double Flash again.

This time there was no hindrance, and he hit the six Siren Heads on the opposite side without reservation!

"Boom!!!"

A terrifying explosion rose from the ground, destroying the trumpets of the six siren heads.

This is not the end yet, now the whole island is shaking.

Even the environment on all sides is crumbling.

If you look from above.

You'll see that the island seems to be breaking apart.

Upon seeing this, King Ultra immediately released energy to stop the island from splitting and restored it to its original state.

"Leo, Astra, your Kaio-ken is indeed very interesting. It can increase your own strength, but if you can't control it well, it will cause huge troubles."

The King of Ultra folded his arms helplessly and looked at Leo and Astra to remind them of this.

"Feel sorry."

Only then did Leo and Astra realize how outrageously powerful the double flash under the tenfold Kaio-ken was.

If it's not handled properly, it will not only destroy the island, but also cause more casualties.

When they thought of this, they couldn't help but regret being too impulsive just now.

In fact, it was not necessary to use Kaio-ken at that time.

It's just that they wanted to end the fight as quickly as possible and crush Siren Head without thinking through the consequences.

"Thank you, King of Ultra."

Leo said while looking at the King of Ultra.

"Well, I'll leave it to you to handle from now on. You will encounter more dangers in the future. Although I don't know what's going on, I can feel that many things that don't belong to this universe are emerging recently. You have to be more careful."

The King of Ultra said calmly.

Although he did not touch the screen, he was able to detect the appearance of the containment with his powerful ability, which made him worry about what would happen in the future.

But he would not interfere too much. As long as the young Ultra Warrior could still handle it, he would not take action.

(End of this chapter)