Quick Transmigration: Homewrecker System!

"Target acquired, Mamoru Ito, shall be eliminated."

HU5B4N-D0 initiated an attack by itself and sprinted towards Mamoru with a drill as its weapon. Mamoru jumped back and tried to shoot HU5B4N-D0 with an energy blaster, but it didn't have any effect. 

Mamoru frowned, he switched between standard gun, energy blaster, energy cannon, and machine gun, but this robot AI was immune to everything. 

Mamoru started losing his cool once HU5B4N-D0 got closer and was about to drill his body. He dodged and flew away. He thought the AI couldn't fly, but to his surprise, HU5B4N-D0 flew by turned his back into a jetpack. It was even faster in the air. 

Since Mamoru was busy dealing with HU5B4N-D0, who was immune to any attack, Sakuma used his emergency tool and repaired Yukio's damage. Thus, Yukio regained his consciousness back.

[What happened? Did I die? Did we fail the world?]

[Pupa: Not yet.]

"Amano-San!" Sakuma hugged Yukio. For a moment, he thought that he would lose Amano-San for real.

"W—What happened? Where is Mamoru? Are we safe?"

Right after he asked that a loud explosion was heard not far from them. Mamoru was thrown by HU5B4N-D0 to a building, and his body hit a wide advertisement screen. 

HU5B4N-D0 was still in rampage mode, although Mamoru had successfully broken its right arm. 

HU5B4N-D0 rushed to Mamoru to attack again. Mamoru knew that he wouldn't survive if he didn't send his full power blast. 

In desperation, Mamoru opened his mouth and charged a highly concentrated laser from his mouth. Right when HU5B4N-D0 was so close to his range with a drill hand, Mamoru unleashed all his power in one attack and break his final limiter as a perfect android. 

The laser came out of his mouth and directly destroyed HU5B4N-D0's core. 

"NOOOO!" Sakuma screamed as his last AI also fell to the ground. 

Amid the destruction, Sakuma thought that there was no other way. They had to run away from Neo Yokto, "Amano-San, let's escape! We can't deal with this!"

"No, Sakuma… look…" Yukio pointed at Mamoru, whose body started glowing red. It was the sign that he was about to explode soon, "Mamoru broke his last limiter, he will turn into mega nuclear and smother Neo Yokto to dust."

Mamoru screamed out in pain. He felt that his body was burning from the inside, "Pain! It's painful! Arrrghh!"

[Pupa, what is the current percentage?]

[Pupa: Breakmeter is 50%, and Fatemeter is 95%. Breakmeter is stuck because Mamoru's explosion will destroy Neo Yokto nonetheless.]

Yunyu seemed to be in deep thought for a moment, then asked;

[This is a gamble, but If I push him far into the atmosphere, it will not harm Neo Yokto, right? As long as the world is safe, then the Breakmeter will be…]

Yukio turned his head at Sakuma, he smiled and then said, "Sakuma, you still have the saved cloud data of my memory, emotion, and behavior, right? So that means you can create another me if I'm gone, right?"

Sakuma widened his eyes, he clenched Yukio's arm so tight that his nails almost pierced Yukio's skin, "I WILL NOT LET YOU GO!"

Yukio smiled bitterly, "But this is for Neo Yokto and its people. Sakuma, both of us know that humanity is of the utmost importance." 

"NO! LET THEM ALL DIE! I DON'T WANT YOU TO LEAVE!" 

Yukio kissed Sakuma's lips and then patted his head, "I love you, Sakuma. I hope that you can be the hero that everyone worships after this. Please protect the world while I'm gone. You can create me again, right?" 

"IT WILL NOT BE THE SAME! AMANO-SAN, DON'T GO!" Sakuma was begging and crying as he tried his best to hold Yukio. 

Yukio lightly pushed Sakuma off him, and he flew to the sky, "I love you." 

[Pupa: Ding! Fatemeter increases to 100%. Congratulations host! May you have a good love life with the master of this world!]

[Pupa… I'm going to die soon.]

[Pupa: I know, it's just an automatic response.]

Yukio heard Sakuma's long scream from below, begging him to return. But he couldn't. He took Mamoru, whose body was in pain. Mamoru had lost control of all the robots, so there was no more death on the remaining civilians. Everyone looked up to the android above them.

Yukio hovered above everyone and proclaimed loudly, "I am Yukio Amano, Master Sakuma Hoshino's android! He has commanded me to save everyone! I want all of you to thank him for saving everyone in this world!"

Yukio propelled his jet and flew far away to the atmosphere. Mamoru was in his embrace. He retained some of his consciousness, "Amano-San… Amano-San… it's painful… it's burning, pain…"

"I know, we will be in peace soon," Yukio comforted Mamoru. 

"We will be… in peace? Two of us?" Mamoru asked. His body was going to explode soon, and they were already far above the sky as Yukio exhausted all his energy to push the jet further. 

"Yes, two of us. I'm sorry, Mamoru."

Mamoru smiled, and he snuggled in Yukio's embrace, "As long as we are in peace… together… then I am happy…"

Everyone in Neo Yokto covered their eyes once they saw a blinding light from above, almost like an exploding sun, Mamoru's body exploded and created a massive shockwave in the sky. Thanks to Yukio Amano, the remaining people in Neo Yokto and the city itself was safe from ruination.

But there was a heart that was in ruin. Sakuma watched the blinding light on the sky unblinking. Tears didn't stop flowing from his eyes, "Amano-San…"

[Pupa: Ding! Breakmeter increases to 100%. The world has been completed! Congratulations, host!]

Yunyu was floating around in the sky with Pupa, he looked down, from this distance, he couldn't see Neo Yokto at all, which was a good sign. That meant he had successfully saved Neo Yokto.

"Can we visit Sakuma first? He must be heartbroken…"

"We cannot. You are just a soul now. You cannot travel far as a soul like this."

"Aww…." Yunyu was saddened. He wanted to part ways with Sakuma at least once before he jumped out of this world. But it seemed that he couldn't.

"But his Breakmeter and Fatemeter are 100%. So he will have a good life in this world after my death, right?"

"Correct," Pupa replied, "Do you want to jump to the next world now?"

"Hm… this world is challenging and confusing. I squeezed all my brainpower in this world. I hope the next world will be a bit easier," Yunyu complained.

"You will love the next world, trust me," Pupa said.

"Alright then," Yunyu looked down and said, "Goodbye, Sakuma. I know that you are a good man, just a bit misled. I hope you can be a good hero in this world, just like what you wished since you are a kid."

Yunyu hugged Pupa system, and they disappeared from the world.