Yuto's cyborg parts were malfunctioning from all the electricity. He felt like he was in a boss fight, so his adrenaline made it easier to dodge.
The attacks stopped, and Hakkiri raised his palm to create a giant sword of light. It was so large that the blade was barely visible on the horizon. Even the hilt was thicker than mountains. He swung it in all directions, hoping to hit Yuto. It erased everything hundreds of kilometers away, including many cities.
Shit, I didn't think the damage would be this bad... I have to end this quickly, or he'll destroy the country.
Even though it was night, the light was so intense that any normal human being would go permanently blind. He prepared himself physically and mentally to use his strongest attack: the same supreme gravity he used to kill Slade. Hakkiri threw countless lightning strikes from his hands, so he had to dodge them while concentrating his power.
Done!
Akari's body was smashed down in the air. It took about half a second to reach the ground, since there was nothing in the landscape. The closest surface was hundreds of kilometers away, so Yuto's attack had to be the strongest and fastest. It damaged their bodies significantly. Yuto's only eye was being blinded by using so much power at the same time.
When Akari travelled about six hundred kilometers into the ground, he released a omnidirectional light. It was powerful enough to blind Yuto for some seconds. It also vaporized the underground where he was. He managed to reach Yuto in less than a second, due to his light speed and capability of flying. He landed a powerful kick to his head, knocking him out instantly and stunning him for longer.
Then, Hakkiri connected a electrical chain to Yuto's body. He swung it like a whip and released it. His body travelled so far that he was now at the ocean near Tokyo. Yuto woke up and saw a huge tsunami charging towards him. Akari gathered the water with his electricity, making it a canvas to his powers. Electricity being the pencil and paint bucket, Light being the eraser.
He sent several light beams through the water, taking Yuto by surprise. He managed to dodge them, even though they arrived instantly, because of the light's speed. He was just that good to know where the next attack would come from. Or he was being protected by someone from afar. A huge storm formed, sending immense lightning strikes everywhere. Water flew in all directions, electric currents were shot towards him, as well as giant drops of water and light beams.
Yuto thought of something he had tried a few times before, since it was very exhausting and difficult to do with his power. But it was now or never, since it would give him a huge advantage.
Concentrate, Yuto... this is not the first time you use it!
Suddenly, everything around him froze. He used his power to stop all the molecules from moving, lowering their temperature. It was practically impossible to do that on that scale, but Yuto's adrenaline was working wonders.
I got it! I can't believe I could do it in just one try!
Surprised, Hakkiri connected his electricity to Yuto's body again and shook him around, shattering the ice and sending huge waves in all directions. He released him, launching his body towards the sky.
They were both almost exiting the atmosphere. The curvature of Earth was visible there. Yuto catched some air with his power to be able to breath and not explode by the difference in pressure and everything else. Hakkiri didn't need any of that, since he was too strong to die for a stupid reason like that. He could resist it for at least a few hours.
Yuto looked up by instinct and remembered something absurdly important. He understood that his task now was to damage Hakkiri's electrical barrier. He casted a supreme gravity on him, sending his body towards the ground and exploding a mountain on impact. He did it again multiple times, annoying Akari, who sent an omnidirectional discharge and stunned him.
Yuto didn't stop, determined to cause as much damage as possible. Hakkiri grabbed a mountain with his power and threw it towards Yuto, who destroyed it with another mountain. Both of them were throwing mountains at each other now. Lightning was falling everywhere, bolts of lightning, mountains, storms, tornadoes, and more. Yuto and Hakkiri were changing the landscape with their powers, grabbing everything and throwing it everywhere. It was a food fight on an absurdly large scale.
Both were getting tired, so Hakkiri swung his palm, casting a colossal light wall and sweeping it. The only way to avoid it was getting around it, since it was impossible to jump or dig below it. Yuto flew as quickly as possible to not be hit. But Akari was faster and casted another wall with his other palm, closing it like a cage. Yuto used a horizontal supreme gravity towards the kid's heart and managed to erase it.
Surprised, Hakkiri made the walls disappear and put his palms together, sending out an immeasurably powerful yet small beam of light. It passed through Yuto's heart without a hitch and continued on until it reached space. In fact, it went even further than the distance from the moon to Earth. Fortunately, he was aiming for the sky. He would have pierced the entire planet otherwise.
They both fell to the ground, exhausted. Yuto froze his chest and made his blood flow almost normally. Akari made her electricity sustain her body, so he would last at least a few hours fighting. But if he had to go all out again, it would be difficult to last minutes. Yuto, on the other hand, was in an even worse situation. He would only survive if he stopped fighting immediately, since he had to focus his power on his body.
Luckily for him, his job was done. He managed to weaken Hakkiri's electrical barrier by forcing him to use his power on himself.
— Are you tired, Yuto...? I can do this all day...
The air got a bit strange and Akari noticed it. Vertically, something was pulling the ground towards the sky. He looked up, but they were faster.
An abnormally large railgun attack hit Hakkiri. It was the infamous orbital cannon in action. Yuto barely managed to protect himself. An explosion larger than a normal Tsar Bomb occurred. There were no more mountains to tell the tale. The Earth once again had its rotational speed altered and was pushed slightly in its orbit around the Sun.
The electricity from the electric cannon and the flames from the explosion spread more than 10 kilometers away, while the shockwave spread more than 100 kilometers. Many cities were vaporized instantly. The entire fight was so fast that few people even knew there was a fight going on.
Most of the country was still without power, but some places were returning electricity with backup power or other means. City lights were visible moments before being wiped out of existence. The planet's climate underwent major changes once again.
If Yuto could see the damage a fight of this scale could cause, he would want to bring world peace once and for all. But he wasn't doing this just for fun. He needed to kill the Level 7s, the true threat to humanity. Once they were dead, he could rest in peace. If he survived, that would be even better, but people would want him dead anyway.
How could a wanted criminal survive while all the great heroes died? Unacceptable. That was the conventional wisdom. People loved heroes, even though they knew they were villains. They brought uniqueness to this boring world. They didn't need to be real heroes. Just making the world a more fun place to live was enough for them.
Yuto lowered the temperature of the place to check if Hakkiri was dead. He was lying down, almost intact except for the hole in his chest. They were in what was left of a field of flowers.
— It's okay, Yuto... you win...
He's still alive...?
— The railgun drained almost all of my power...
— You know that even 1% of millions is still a lot, right?
— Don't worry, I won't use it on you... I must do one last thing that I will not regret.
Hakkiri pointed his finger towards the moon. He noticed the "X" mark Slade made.
— Wait, something is different...
— Do you mean the huge X?
— The distance... it's further than it used to be...
Slade's strongest attack pushed the moon slightly out of orbit, nearly breaking the solar system.
— Can you seriously tell that from here?
— It's not hard to tell when I touch it.
— Wait, what?
Akari's finger was releasing a thin lightning towards the moon. It was the same ability he used to swing Yuto's body everywhere.