You don't know what a fear is

Long ago, there was a young genius scientist.

He directed his immense intellect toward making numerous contributions around the world.

But the world disappointed him.

People praised the genius of his mind but rejected the idea that obsessed with him.

Instead of developing human civilization, his one dream was the artificial evolution of the human species, but no one would cooperate.

"Argh! Those monkeys! They say it's dangerous! They call me a crank! Do they think the human race made it this far by avoiding the risk?! Creatins who think they don't need to evolve... have no right to pass their genes! Anyway, this plan is for me! If I have to, I will do it alone!"

Even as a child, human imperfection dismayed him.

Everyone around him looked like stupid animals.

This pained him.

When he was 15, he thought of his plan for evolving the human race to create a world where he could feel at home.

After he turned 70, he first regained his youth; then, he created clones for himself.

Together, they performed countless animal experiments before moving on to human subjects.

He called their laboratory the House of Evolution, and their experiments gave birth to many new species.

Dr. Genus.

This was the name of the creator of this House of Evolution.

However, at the time, Dr. Genus was in crisis and had long lost his calm, collected attitude.

"Kamakyuri, Slugrus, Frog-man, Ground Dragon, Armored Gorilla, and even the Beast King... he wiped out my elite force to exterminate the stagnant race!"

"According to the armored gorilla, he is going to come. His existence is dangerous. He might destroy the fruits of our research. This is serious."

Dr. Genus, along with all of his clones, discussed how to solve this problem.

All of them were in silence until the real Dr. Genus made up his mind.

"...using our trump card... is the only choice. Prepare to unleash Carnage Kabuto."

"WHAT?!"

Unlike before, all the clones lost their calm.

"No! We can't do that!"

"Do you want to die!"

"If that monster is unleashed, then this world is..."

"but it is the only way..."

"But..."

Calm down. It's only a last resort, with luck traps on floors 1 through 8 will stop him..."

[All the traps are destroyed]

"..."

The sudden announcement from the system silenced all of them.

By now, they knew they had no choice and had to unleash the Carnage Kabuto.

---

Armored Gorilla... no, cyborg gorilla... no, Tamazuki decided to call it gorilla since it was faster this way. As he was drinking a juice prepared by the frog-like monster, he listened to an explanation given by the gorilla who became his tour guide.

Gorilla's explanation was easy to understand, concise, and kind of fun somehow. It seemed he had a talent as a tour guide.

Meanwhile, the frog and slug monsters walked behind them like servants, helping Tamazuki in case he needed something.

By now, Tamazuki knew that he was like a guest in a luxurious hotel.

Still, unlike a luxurious hotel, there were a lot of traps on the headquarters of House of the Evolution, but all of them were destroyed by Tamazuki.

"..."

Gorilla, slug, and frog had many things they wanted to say, especially with how easily Tamazuki destroyed all the traps, but they decided to shut their mouths.

"By the way, who is the strongest mutant among them? That lion wasn't the one, right?"

Hearing his question, the expressions of the three became full of fear.

"That's right. I am only the third strongest, and the Beast King is only the second strongest. Between the two of us, our strength isn't much different, but the first? This guy is a monster. He is the incarnation of the destruction. He will kill everyone!"

While the gorilla knew that the strongest monster might be able to defeat Tamazuki, he didn't want to meet the strongest since he was afraid to be killed too. Unlike the others that could talk normally, the strongest was abnormal, and even he, who was known as one of the strongest mammals in the world, couldn't help but shake in fear.

"Then, let's go there."

"..."

"Eh?"

---

On the underground, a terror was happening. It was more horrible than any scene in a horror movie, and when one stepped into this place, all one could feel was only an intense fear.

"UWAAAGGGHH!"

"S-STOP!"

*Splash!*

All clones of Dr. Genus were killed mercilessly with one punch.

Even if all of them were holding guns, the pinnacle of human weapons, they could do nothing against this incarnation of carnage.

Carnage Kabuto.

A monster with the shape of a beetle with many chains around him was released and ready to destroy everything.

Even if all of his clones were killed, Dr. Genus stepped forward, yet the fear on his face was impossible to hide.

"Hello... Carnage Kabuto. Have you been well? You killed a lot of my clones again. Feeling better now?"

"Hunh?"

Carnage Kabuto stared at Dr. Genus with a cold gaze. "You fool. Of course, I don't feel better. I am the House of Evolution's greatest threat, but you locked me in here beneath the Earth!"

"You are psychologically unstable. We couldn't control you, so it was necessary."

"Control? Gwahahahahaha!!" Carnage Kabuto laughed mockingly at Dr. Genus. "You idiot! I am the perfection of your "New Humanity"! In terms of physical traits and intelligence, I am far surprised by the old human race! So you should take orders from me!"

Dr. Genus didn't agree, but he only dared it on his mind. Still, he had a bigger problem. "Kill me if you want. There are more where I come from. But listen to me for a second. There is someone I need to get as a sample. But he is horribly strong. Only you can beat him. Get him for me—dead or alive."

Then on the hologram screen, a picture of Tamazuki being treated like a prince by a gorilla, frog, and slug was shown.

As Genus's lips twitched while watching this scene, Carnage Kabuto grinned.

---

Being guided by a gorilla, Tamazuki walked into the underground tunnel. He had to say that this place was amazing, and it gave him a giddy feeling like he was in a sci-fi movie. Frankly, he also wanted to make something similar.

'Maybe, when I go back, I will also make one like this.'

However, soon, a loud noise came from the end of the tunnel.

"Wh-What is that?"

"N-No, don't tell me..."

"CARNAGE KABUTO!"

Whether it was a gorilla, a slug, or a frog could see their nightmares from a distance. However, they knew it was too late, and with their speed, it was impossible for them to run away.

"What should I do? What should I do?!"

"Wait?! Isn't that Dr. Genus?"

"What?! If Dr. Genus was killed, then what about us?!"

"It's useless." Gorilla resigned from his life. "Carnage Kabuto, or Asura Rhino. The most atrocious and evil monster that ever came out of the House of Evolution. In front of this monster, our lives can be eaten anytime!"

Carnage Kabuto also could see the despair among them, and his grin was even wider since the feeling of taking the life of those weaker than him had always been fun!

Watching the weak begged for their lives before their death was so much fun!

As soon as he saw his target, he raised his fist, ready to slam him to crush his limbs, then slowly tortured him.

His evil thought was clearly seen on his face, but...

"Eh?"

Before he even reached Tamazuki, half of his body was cut down.

"..." Everyone.

Carnage Kabuto fell as he lost his legs before he screamed in pain, but his jaw was broken since it was kicked by Tamazuki, and his head was stomped, but even so, he could hear the devil's voice.

"I will peel your body slowly, so let's see how long you can stay alive, okay?"

"...."

Carnage Kabuto realized that the clown had always been him.

Soon, a scream echoed through the underground tunnel before that voice completely disappeared.

Whether it was a gorilla, a slug, or a frog, they stood in a place without daring to move.

"So, give me another tour and meet Dr. Genus, okay?"

"Yes!" 3x

The three shouted with all their might and vowed to do their best to serve him.