Use the power of the Demon King to destroy those reincarnated in another world

That is the story of a pair of brothers who love each other deeply——

The younger brother is born with enviable talents. Whether it is skills, magic power or athletic ability, he has talents that are promising for the future.

The elder brother is a powerful figure. Although he has no obvious shortcomings, the ordinary elder brother has made up for everything through hard work.

Unknowingly, his hard work bore fruit, and his brother earned the title of "Thunder Emperor." The younger brother is very proud and loves this older brother very much.

The elder brother is not arrogant because of the status he has received. He treats everyone equally. This quality makes him popular and earns people's respect.

Especially his younger brother became the target of his respect and worked tirelessly. The younger brother, who was talented but worked tirelessly, quickly gained strength, but his elder brother did not allow him to surpass himself.

There is only one reason, and that is to respond to my younger brother's expectations.

In order not to allow talented hard-working people to surpass themselves, my brother endured the painful efforts and continued to do so, even beyond the capacity of his body.

This pair of brothers who love each other do their best for each other without complaining, and sometimes even feel happy because of it.

Just one day——

The brothers completed the capture mission of the "Ecological Research Institute" and were preparing to go home. Alarms sounded throughout the institute, notifying that a monster had escaped. The younger brother was about to leave immediately, but the older brother felt inexplicably uneasy.

Even so, the brothers did not choose to ignore it and go to the station. They went straight to the location of the monster.

As soon as he arrived at the scene, his brother regretted it. The number of monsters that escaped was quite large, and there were many monsters with difficulty level A. More importantly, there is also a "black dragon" with difficulty above S level called "Black Disaster" - a black dragon that even S level adventurers will never challenge alone.

The only option is to retreat.

The elder brother pulled his younger brother and wanted to escape, but the younger brother refused.

"There are people fighting in front of you, why can you escape?" These are the words of the younger brother. Even if the elder brother can take him away by force, he can never deny the heroic spirit of the younger brother.

So, the elder brother vowed that he would protect his younger brother even if his body decayed. The result seemed to be the brother's victory.

In particular, people who witnessed my brother’s efforts said, “He was like a god at that time,” with a sense of awe. However, the cost was huge. My brother exceeded his own limits and damaged the organ that generates magic power.

Doctors later told him he would never be able to use magic and magic again. The younger brother felt deep regret for selfishly implicating his older brother, so he disappeared from his presence.

He vowed never to return to his brother until he found a cure. However, no matter how vast the world is, no such method exists.

One day, the younger brother met a criminal named Phantom. The younger brother prepares to enter combat mode, but the Phantom tells him that he can help him and his brother.

It was like a spider's thread hanging down to hell. Although it was possible to be deceived, my brother had a premonition worth believing.

Ryan raised his hand tremblingly. The S-class adventurer appeared in front of him, shining like a comet, and he was two years older than himself.

Despite this, Lane far surpassed the military prowess of being hailed as a once-in-a-hundred-year genius. He never skimps on his abilities. However, the difference in power is obvious.

Ryan thought: "This guy seems to have been reincarnated and summoned from another world." But from the boy in front of him, he could not feel the unique atmosphere of another world.

There is no point in thinking now. Speculating is just a momentary escape from reality, and the achievement of the goal is in jeopardy.

"Why are you hindering me?" Ryan said unknowingly.

"Of course, my partner was kidnapped by you." Renault put down his hand and replied matter-of-factly.

"I won't let him die."

"That's not the problem."

“I was just one step away from making it, and it took Nia Fultzbelt.”

"I don't know what strength you need, but if it's really that important, you should ask for help, not kidnapping."

"I don't want simple cooperation!" Ryan's voice began to tremble. The longing, the pessimism, it's all in the sound.

"It's his decision whether to do it or not."

"No, I refuse! I will-!" Ryan was about to speak, but suddenly stopped.

The words he was about to say contained contradictions. Things that are being done, things that have been done. All this is denying oneself.

"What would you do?" Renault said. Ryan felt cold sweat break out on his forehead because Renault showed an angry expression.

Renault twisted Ryan's collar and pulled him closer to him. Ryan was stiff and unable to resist. Suddenly, there was an impact on his forehead. Although it was Reno's head hit, the pain this time was different from before.

"Are you making a fuss! You can't do anything, but you put expectations on others! You bastard!!!" Reno hit his head again.

However, Renault's vision became blurry next. Although he couldn't explain why, he unlocked the body strengthening magic because he felt that he had to bear the pain.

"You shouldn't do things you hate to others. Didn't my brother teach you? Huh?" Ryan bit his lip as he was stared at.

"...I know, I understand this. But I have suppressed my feelings and persisted until now." Ryan's emotions collapsed, and all the emotions that had been suppressed came out.

Another hit to the head, and the vision shook again.

"That's where you are wrong!!" Reno held the swaying Ryan tightly and forced him to look into his eyes.

"Do you think your brother would be happy about hurting others? Do you seriously think so? Is your brother the kind of man who would be happy about such boring things?!"

"...!" Ryan couldn't answer, the pain and regret on his forehead, and a strange feeling of emptiness came to his heart. When Renault let go, Ryan let his vision waver and sat on the ground.

Ryan's eyes fell to the ground and he lowered his head: "So, what should I do..." He couldn't make a sound, and everything in front of him collapsed.

Renault looked at Ryan, his angry expression gone, and his eyes had the exact opposite tenderness. Renault scratched his head in annoyance, turned to face them both, and said to Hailin: "Close your eyes and plug your ears, Hailin."

"What?"

Although she didn't understand what he meant, facing Renault's serious eyes, Hailin did as he said.