Naruto: I'm really not an evil scientist!

Even a useless person like Muzan Kibutsuji, who is not skilled in martial arts and cannot sense battle aura, can clearly see this fantastical scene with his already blurry old eyes.

And so, Muzan Kibutsuji's fear of death grew stronger, his face contorting more and more: "Wait..."

"If you have anything else to say, I will listen to it slowly as part of my work after we go to hell." Kamado Tanjuro gripped the blade tightly. To be honest, this was the first time since he was born that he had been so angry and so eager to kill a living humanoid creature.

He didn't want such a disgusting guy to live even a second longer.

"Don't worry, I'll be there soon..." Kamado Tanjuro "gently" gripped the sword in his hand, crouching slightly, like a leopard gathering its strength, a scorching current spreading through his limbs and bones.

The terrifying flames surrounding him had already pierced the sky, as if they were about to devour the entire world.

"The! Seventh! Life!" With Tanjuro's roar, Boom—! Like a nuclear explosion, a deafening roar shook the heavens and earth, and the Infinity Castle was completely shattered, with mushroom clouds rising slowly.

Immediately afterwards, terrifying arcs of sword energy completely filled the entire Infinity Castle ruins. Each sword light was not as thin and sharp as a wind blade, but rather like the marks left by an eraser wiping a pencil, erasing everything related to Muzan Kibutsuji.

Kibutsuji Muzan's body was completely erased, and his soul was sent directly to hell by Kamado Tanjuro.

At the same time, Muzan's "curse" took effect, and the remaining cells in all the demons he created dragged all his subordinates down to hell.

The scale of these layoffs is comparable to Yhwach's Saint-Berth. For example, Upper Moon Two Doma was still hopping and skipping over to provide support when the entire demon was instantly gone, turning into a pool of blood. Even his soul was directly locked into Hell by the Underworld along Muzan's causal lines to be tortured. It was quite sudden.

However, even though the scumbag boss was extremely selfish and thought that if he died, it would be better for all the ghosts to die with him, there were still a few ghosts who could not be dragged down with him.

First is Nezuko Kamado, the ultimate Rasetsu demon king under Hiruko's command who is not afraid of the sun. After being professionally modified by Hiruko, Muzan has no way to affect Nezuko.

Moreover, Nezuko herself was a public servant of the Underworld who served under Hiruko, and she was already waiting for Muzan to come down in the Underworld.

Hiruko's research laboratory was filled with various equipment and reagents for modifying life forms. It was with these that he transformed Nezuko into an ultimate life form that was not afraid of sunlight.

Secondly, there's Tamayo, the doctor who had long since broken free from Muzan's control, and Yushiro, the demon created by Tamayo, who also survived. There's also a cat that Tamayo turned into a demon, who also survived.

Next is Kokushibo, the Upper Moon One of the Twelve Demon Moons. Although he and Muzan have a superior-subordinate relationship, they are more like partners.

Moreover, he broke through the physiological limits of ordinary ghosts, was able to turn around and not die, and could even create ghosts with his own blood.

Aside from the sun and the Crimson Blade's restraint, he is practically immortal.

Although he was seriously injured by Muzan's curse before his death, he was not dragged down to hell by Muzan. He was completely healed within minutes and was fine.

"Is the battle over...?" However, after sensing that Muzan had been killed, Kokushibo, who was originally heading to the Infinity Castle to support Muzan, decisively changed direction and ran away.

slip away.

Firstly, Muzan has already been killed, so he probably can't beat him either. After all, although Muzan is not skilled in martial arts, as the progenitor of demons, he is indeed a little bit stronger than him.

Secondly, he had no real connection with Muzan to begin with. Muzan wasn't exactly a charismatic guy, and before Muzan died, he even tried to drag him down with him. So what kind of revenge was he supposed to get for Muzan?

Akaza, the Upper Moon Three, also survived Muzan's curse, because all the wandering ghosts in the human world were locked into the underworld by Hiruko using scientific methods, and his deceased wife was unable to interfere with him.

So during this process, his strong desire to continue living allowed him to successfully break through the limits of a ghost and, without being influenced by his wife, voluntarily unplug the WiFi and enter the underworld.

However, he was clearly not as powerful as Kokushibo. He was seriously injured due to cell collapse, which reduced his strength and made him somewhat weak. He would need to recuperate for a period of time to recover his strength.

However, after overcoming the limits of a demon through his strong will to survive, his memories of his human days resurfaced even without his wife's intervention.

Chapter 411

This transformed him from a simple-minded and joyful fighter who only thought about training to become stronger and fighting powerful enemies into a severe depression patient.

He didn't know what the point of living was anymore, and his originally strong will to survive collapsed instantly, leaving him feeling utterly hopeless.

He lay down on the open ground like a salted fish, gazing at the night sky, quietly waiting for dawn to arrive, ready to bask in the sun.

"Koiyuki, I'll be there to find you soon." Akaza, no, it should be Komaji, was now very annoyed. Why did he have to break the limit? Now it would be hard for him to die; he could only wait for the sun to rise so he could be scorched to death by the sunlight.

...A few days later, Kagaya Ubuyashiki was stunned upon receiving the news.

"What? Muzan is dead?" All the team members were also dumbfounded.

“That’s right. Muzan has been killed by my father. I heard from the god that apart from Nezuko, Tamayo, Yushiro and his cat, and the surviving Upper Moon One Kokushibo, all the demons have perished along with Muzan and are being tortured in Hell right now.”

Tanjiro Kamado scratched his head. He really hadn't expected his usually sickly father to be so powerful, actually defeating the Demon King all by himself.

"Hmph, it seems Kagaya, your trial is not going to be completed." Hiruko No. 1 said with a smile.

He felt no displeasure whatsoever. Being able to follow God's will and come to another world to teach a group of passionate, righteous, and gentle young people was simply the best thing ever.

Moreover, in his opinion, Kagaya Ubuyashiki really has no talent in combat, and this is for the best. Anyway, it's just that whoever kills Muzan is just acting on a whim of the god, and there will be no punishment for not killing Muzan with his own hands.

"I heard that the ruins of the Infinity Castle after the war are now like a scorching hell. Kamado Tanjuro, what a powerful man."

Kagaya Ubuyashiki sighed helplessly, regretting that he was a step too late. However, he didn't feel any regret. As long as Muzan was dead, it didn't matter who killed him. After all, none of the Demon Slayer Corps didn't want to kill Muzan, so there was no need to argue about it.

"The Upper Moon Two is dead too..." Shinobu Kocho frowned slightly, her fists clenched tightly under her sleeves. She felt somewhat unwilling that she couldn't kill that scoundrel with her own hands.

"We can't let our guard down yet! There's still Upper Moon One alive, isn't there? He's another target that our Demon Slayer Corps must take down!"

The Wind Pillar, Sanemi Shinazugawa, said with a resentful expression. He was hostile to all demons, and if it weren't for Kagaya Ubuyashiki stopping him, he would have even wanted to cut down Tamayo and Nezuko.

"Um... Mr. Shinazugawa," Tanjiro called out weakly.

"What's wrong?" Shinazugawa Genya stared menacingly at Tanjiro.

"The High God said that Upper Moon One was also a swordsman of the Demon Slayer Corps and the older brother of the creator of Sun Breathing. He awakened his Demon Slayer Mark during his human years and also opened the Transparent World..." Tanjiro Kamado said cautiously.

In Tanjiro Kamado's mind, his father, Tanjuro Kamado, had mastered the Demon Slayer Mark and the Transparent World, while Upper Moon One, Kokushibo, also mastered the Demon Slayer Mark and the Transparent World. Furthermore, Kokushibo was a demon with physical abilities stronger than humans, meaning that Kokushibo's fighting power was actually roughly equal to his father's.

Now it seems that none of the Demon Slayer Corps members have mastered the Demon Slayer Mark or the Transparent World, and he doesn't want to watch these seniors go to their deaths.

"You brat, what do you mean?!" Shinazugawa Genya glared at Kamado Tanjiro. "Want to fight?" How could he not understand the subtext? This brat was looking down on him!

"No, Tanjiro is right! We haven't even mastered the Transparent World and the Demon Slayer Mark, so we might not even be able to defeat Kokushibo from his human days. What makes us think we can defeat this last demon?" Rengoku Kyojuro shouted, his voice filled with passion and fervor.

"Should we cower just because the enemy is strong?" Shinazugawa Genya roared back.

"No! It is precisely because the enemy is powerful that we must become stronger, at least to master the corresponding abilities, in order to be qualified to stand before the evil spirits!"

Just as we distinguish between Pillar-level swordsmen and ordinary swordsmen, the Demon Slayer Corps must avoid unnecessary sacrifices, and the strong must protect the weak! Let's train together, Shinazugawa, to become stronger! Kyojuro Rengoku is even more passionate and energetic than Superman.

Deep in hell, having just endured the scorching heat of karmic fire, drowning in the underworld, freezing in the Crimson Lotus Hell, being soaked and scrubbed in wisteria sap, and being baked by the sun, Muzan Kibutsuji, whose eyes had already lost their luster, was bound by silk threads and hung on a large tree.

Countless toy sprites and fairies held hands and sang and danced under the big tree, giving the Demon King a spiritual enjoyment worthy of a cosmic emperor—a treatment that Frieza had once enjoyed.

"Damn it! So noisy!" Muzan Kibutsuji had been silent for a while, but he couldn't hold back any longer. However, as soon as he shouted, he was silenced and his eyes could not be closed. He could only be forced to accept mental pollution.

"Is this Muzan Kibutsuji?" Kanae Kocho stood at the edge of "Paradise" and curiously observed the true form of the Demon King.

"That's right, it's that villain!" Nezuko Kamado said angrily, waving her little fists. She hadn't forgotten the grudge of being wiped out by Muzan.

"This guy's willpower is unexpectedly strong when it comes to survival; he's even more resilient than a cockroach and hasn't broken down yet."

Looks like we can play a little longer.

Hiruko was also somewhat surprised. He had originally thought that Muzan Kibutsuji was just an ultimate loser, but he did not expect that this guy's will to survive could be so tenacious.

Hiruko's scientific spirit kicked in at this moment, and he began to study Muzan's soul structure.

Even after going to hell and enduring all kinds of torture, Muzan Kibutsuji, a weak-willed good-for-nothing, did not suffer a mental breakdown. Instead, he discovered that the soul was a kind of "living" state, which strengthened his will to survive. He even fantasized about escaping hell one day and achieving eternal life.

It's truly a unique talent to be so afraid of death and so eager for life; at least it fully utilizes the survival instincts of wild animals.

However, Muzan was completely blind to reality. The reason his soul could endure so much torment without perishing was essentially because Hiruko didn't want him to be completely destroyed and wanted to play with him a little longer.

In Hiruko's research laboratory, various soul research devices flickered with an eerie light; he used these to maintain Muzan's immortal soul.

Therefore, before Hiruko gets tired of playing with him, Muzan's soul will not perish no matter how much torture he endures under the unique rules of Hell.

Moreover, Muzan had committed atrocities for over a thousand years, and his soul carried an enormous amount of karmic power and curses. Hiruko was able to extract this negative, idealistic energy from Muzan and convert it into energy for absorption.

All ghosts have some sins, or karma, on them, and even ordinary souls are no exception. However, it is more obvious and more abundant on ghosts, and they feel no guilt when it comes to exploiting them.

"Muzan is in your hands now." Hiruko stood up to leave, smiling as he patted Nezuko's head. "Oh, and Nezuko, don't forget to tell Muzan that you have evolved into an ultimate life form that is not afraid of sunlight, and will walk towards eternity with me." Hiruko's scientific research has made Nezuko a being that is not afraid of sunlight.

“Hmm…” Nezuko blushed, then nodded. Of course, she knew what Hiruko’s words meant.

Shrimp and pork heart—that's what made Muzan so jealous he lost his mind.

It's incredibly satisfying to have something you've worked so hard for so long easily obtained by someone else and then flaunted in front of you.

However, the goddess is so intimate, walking towards eternity together... Young Nezuko has no idea how many people this scumbag Hiruko has said such cheesy things as walking towards eternity together to, and not just women, but also men, or rather, non-human species like Orochimaru and Sasori that transcend gender.

Hiruko then said to Kanae, "Kanae, the Demon Slayer Corps is about to disband. When you have time, bring your sister Shinobu and Kanao from the Butterfly Mansion over as well. I have high hopes for Shinobu. You are too gentle and are more suitable for guidance work. And Upper Moon Two Doma also needs someone who can be ruthless to make arrangements."

"I understand, Lord Hiruko, but Shinobu is actually very gentle!" Kanae Kocho pouted and muttered softly.

"...Upper Moon Three Akaza, or rather Komaji, do you want to see Koyuki?" Hiruko crossed his legs and lay in Kanroji Mitsuri's arms, feeling her soft and bouncy bosom, just like a villain who indulged in extravagance and lust.

His scientific spirit was also manifested in his study of human emotions at this moment.

Upon hearing this, Komaji's previously dull eyes instantly ignited with fire: "Really? I want to! I really want to see Koyuki again! Please, I'll do anything to see Koyuki again!"

"But you are a demon, a demon that has been wandering the human world for at least two hundred years. Have you ever thought about something?"

"Wh...what?"

"The fact that Koyuki, who died more than two hundred years ago, may have been reincarnated." Hiruko's words struck Komaji like a thunderbolt, making him tremble as if struck by lightning. He then collapsed to the ground with a thud, his eyes losing their luster once again.

"However, you're lucky. You have a good wife. For the past few hundred years since her death, she has been wandering between the human world and the underworld, refusing to reincarnate, waiting for you." Hiruko's lips curled into a pleased smile as he toyed with Komaji's fragile heart, which resembled that of an innocent young man.

His scientific curiosity was greatly satisfied at this moment.

"Really?! Koyuki... Waaaaa!!!" Overwhelmed with both sorrow and joy, Komaji completely lost control of his emotions and burst into tears.

Sadness, joy, guilt, fear and other emotions mixed together, crashing against his heart like a surging tide, leaving Komaji unable to control himself for a long time.

Meanwhile, Hiruko, the science ninja, quietly watched Komaji "go crazy" while holding the blushing Kanroji Mitsuri in his arms. His ears twitched slightly, and the pleasant, crisp sound of countless coins colliding echoed in his ears.

As a scientific ninja, Hiruko has reached an extremely high level in his research on the extraction of "heart". Now, his extraction of "heart" is not just about desire, but also about anyone whose emotions fluctuate greatly in front of him.

He can acquire large amounts of energy using his self-developed precision instruments and unique energy sensing techniques, and quantify and transform it into a "universal" coin similar in nature to a cell coin for storage.

After Komaji could no longer contain his emotions, Hiruko spoke again, his voice, tinged with a hint of mockery yet filled with authority, saying, "Swear allegiance to me for all eternity, and I can grant your wish." As a scientific ninja, he was well aware of the complexity and manipulability of the human soul, and through this contract, he could better control Komaji.

"My lord, I will be loyal to you for eternity." Komaji knelt down and swore without hesitation. He would not hesitate to sell his soul to the devil if he could see Koyuki again.

"The contract is complete." Hiruko used his self-developed causal thread binding device to complete this demanding contract, then smiled and said, "Turn right after you leave, and you will see your wife who has been waiting for you for more than two hundred years. Go."

"Thank you for your kindness, sir." With that, Komaji rushed out of the room.

Hiruko watched Komaji's departing figure and muttered to himself, "Words really do have power. It seems I can't make oaths so carelessly anymore."

Having completed an experiment on "causal lines," he found it difficult to completely enslave a soul that had no connection with him. However, after the soul voluntarily swore allegiance, he was able to easily manipulate the other's "lines" and enslave them forever through causal entanglement.

The reason for choosing Komaji is that he is simpler than other demons, and his wife's soul is also preserved in his scientific laboratory using a special device, which will make it easier to conduct the next step of the experiment.

For example, they could intertwine the karmic threads between the souls of the husband and wife, then send them to reincarnate, to experiment with whether they could discover a more reliable procedure than the reincarnation and continuation of fate by the Tushan fox demons.