Ultra: The copy challenge is very simple?

However, what Diablo had not expected was that his proud and powerful Tera Hadoken was ruthlessly crushed like a fallen leaf swept by a strong wind by the Double Flash of Ultra released by the Leo brothers.

"This... How is it possible?!" Diavolo's eyes flashed with disbelief and astonishment, his voice trembled slightly due to shock.

At this moment, a dazzling red light streaked across the sky. It was the Ultra Double Flash that condensed all the power of the Leo brothers and hit Diablo hard with unparalleled power.

boom! ! !

Along with a deafening explosion, a powerful wave of energy spread out, dust and smoke filled the air. Diablo was like a scarecrow caught in a strong wind, blown away by the huge impact force, and fell heavily to the ground, stirring up a cloud of dust.

"Aaaaaaah!" Diablo roared in pain, but the pain didn't seem to break him. Almost the moment he landed on the ground, he struggled to stand up, his whole body emitting an unyielding light.

He couldn't help but give his sincere praise to Brother Leo: "You are worthy of being Brother Leo. Such an attack is worthy of being my opponent. It's powerful!"

The Leo brothers looked at the scene in front of them with surprise on their faces, with disbelief flashing in their eyes.

They never expected that after enduring such a powerful attack from Ultra Double Flash, Diablo could actually stand up so quickly, as if the previous attack was just a trivial itch to him.

"This guy's defense is ridiculous!" Leo couldn't help but exclaim, with awe and a hint of uneasiness in his tone.

"But now it's our turn to fight back!" Astra added, with a determined light in her eyes.

Before he finished speaking, Diablo rushed towards Brother Leo again like an enraged beast. His fist, with the sound of wind and thunder, swung fiercely towards Leo's chest.

Seeing this, Leo quickly crossed his arms over his chest, ready to fight.

However, the moment Diablo's fist touched Leo's arms, an indescribable huge force instantly spread throughout Leo's body, causing him to involuntarily retreat more than a thousand meters away. His arms were numb from the shock and he almost lost consciousness.

Leo couldn't help but feel a sense of horror. After countless battles and rigorous training, his body had long been tempered like steel. Ordinary attacks were just a breeze to him, and it was difficult to cause any damage.

However, just one punch from Diablo made his arms feel numb and trembling like never before, which was enough to prove how terrifying the power Diablo possessed was.

"This... this guy's power is simply terrifying!" Leo muttered to himself, his tone full of disbelief.

"Astra, don't be careless!" Leo hurriedly warned his brother, his eyes revealing an unprecedented seriousness.

Astra heard this and nodded slightly to show that she understood.

He took advantage of the flaw that Diablo revealed after attacking Leo, and his figure flashed like a meteor across the sky. He instantly launched an incredibly powerful Astra Kick. The hot energy drew a brilliant trajectory in the air and kicked Diablo hard on the back.

Bang! !

The huge impact caught Diablo off guard. He staggered back several steps with a look of astonishment on his face.

"Hmm? This guy..."

Diablo quickly adjusted his posture, a hint of anger flashed in his eyes. He turned around abruptly, waving his hands quickly, and several dark golden light bullets shot towards Astra like a meteor shower.

Astra was light and nimble, and she cleverly avoided these deadly attacks with a few backflips.

Bang!Bang!Bang!

Light bombs fell to the ground one after another, creating bottomless holes, with dust and smoke flying everywhere.

"During this period, I have also improved and learned some new boxing techniques!"

Astra raised his fist with a confident smile, and the hot flame energy quickly gathered on it, as if to ignite the air.

Diablo looked at Astra's familiar moves and was stunned for a moment. Then his face changed drastically and he exclaimed: "This... Is this Noah Hellfire!?"

However, Astra showed a sly smile at this critical moment, and he thought to himself: "Good opportunity!" Before he finished speaking, he rushed out like an arrow, and the flames condensed on his fist became more and more intense.

"Humph, this is not Noah's Hellfire, but Astra's Hellfire, which was created by Astra!"

With a roar, Astra's fist, blazing with flames, smashed towards Diablo like a meteor.

After saying that, Astra gathered all her strength and punched Diablo hard in the abdomen.

Boom! !

A dull and shocking collision sound suddenly rang out, accompanied by the spreading of hot flame energy, as hot and dazzling as a volcanic eruption.

Under this huge impact, Diablo was like a fallen leaf blown by a strong wind. He was instantly knocked back hundreds of meters and fell heavily to the ground, stirring up a cloud of dust.

Feeling the heat and pain coming from his abdomen, Diablo couldn't help but frown. He looked up at Astra with a hint of surprise in his eyes: "You... When did you learn this trick?"

Astra stood there with a confident smile on his face. He said slowly, "I learned it a long time ago, but I just never had the chance to use it before. It's too early to be surprised now, Diablo. The real battle has just begun!"

"Besides, you seem to have forgotten my existence!" At this moment, Leo's voice suddenly sounded behind Diablo, with a hint of coldness and determination.

Before Diablo could react, Leo's figure appeared behind him like a ghost, and then Leo's fists hit Diablo as densely as raindrops.

Bang!Bang!Bang!

Each punch contained all of Leo's strength, and dazzling sparks burst out when it collided with Diablo's body, causing Diablo to retreat repeatedly and almost unable to stand.

Under Leo's series of fierce attacks, Diablo finally found a gap. He exerted force suddenly, trying to break free from Leo's attack.

However, Leo had already expected him to do this. He flashed, quickly accumulated strength, and then punched Diablo hard in the chest, knocking Diablo back a distance.

Immediately afterwards, Astra and Leo nodded to each other tacitly, and as if they were in sync, they leaped into the air at the same time, each gathering all their strength, ready to perform their signature flying kick technique - Brothers Flying Kick!

At that moment, the two figures seemed to turn into two lightning bolts that pierced the sky, with the sound of whistling wind, and attacked Diablo with the force of thunder. Diablo was like a sandwich cookie that was tightly clamped, facing the fatal attacks from both sides.

"You underestimated me!" Diablo roared, his eyes flashing with unyielding light, and the absolute power hidden in his body was completely stimulated at this moment. Dark golden energy surged like a tide, spreading out from his body, forming an indestructible energy barrier.

Under the impact of this force, Leo and Astra's flying kicks were actually bounced away. The two were like kites with broken strings, and were blown away by this powerful force and fell heavily to the ground.

Standing up, Astra and Leo looked at each other, both of them had solemn expressions on their faces. They knew that Diablo in front of them was not an easy opponent, and his defense was far beyond their expectations.

"This guy's defense is too strong. If we want to defeat him, it may not be enough for just the two of us." Leo said in a deep voice, with a hint of determination in his eyes.

"Yes, I'm afraid we still need Regulus' help." Astra took over the conversation, his tone full of desire for victory and trust in his companions. They knew that only by joining forces could they defeat this powerful enemy.