People in Demon Slayer: The Journey That Began with Demon Slayer

Upon hearing Zenitsu's words, Tanjiro retorted helplessly, "Zenitsu, stop teaching Nezuko those weird things. You've already been reprimanded by Yosuke-sensei so many times, why don't you learn your lesson?"

"How could I possibly teach Nezuko anything strange!" Zenitsu, completely oblivious to his own feelings, gushed, "These are all proof of my love for Nezuko~"

Tanjiro admonished, "Zenitsu, Nezuko is currently suffering from amnesia, and there are many things she can't understand. If you want to be with Nezuko, you need to become reliable first. If you always act cute, she'll be treated like a little brother."

Zenitsu recalled how Nezuko always treated him like a child, patting his hair whenever he tried to be nice to her. Was he being treated like a younger brother by Nezuko...?

Tanjiro is both Nezuko's brother and Zenitsu's friend. Tanjiro knows that Zenitsu has feelings for Nezuko and is very worried about Zenitsu.

Tanjiro reminded Zenitsu, "You need to show Nezuko your cool side, make her think you're reliable, and clearly express your feelings so she'll realize them."

Zenitsu, full of enthusiasm, pleaded with Tanjiro, "Tanjiro, teach me!"

Faced with Zenitsu's sudden request, Tanjiro panicked: "You're asking me all of a sudden? I don't know either. I have no experience with this."

Zenitsu, with lightning speed, knelt down in front of Tanjiro: "You are Nezuko's brother, you must know that, Tanjiro. I am your good brother, and we will be family in the future. My happiness is in your hands."

Tanjiro rested his chin on his hand, pondering how he could help Zenitsu.

Although he wanted to help Zenitsu, Tanjiro's mind was filled with the image of Kanao Tsuyuri, which lingered for a long time.

Tanjiro's cheeks gradually turned rosy, and smoke began to billow from his head like a chimney.

Zenitsu looked up at the sky, puzzled. Although the weather was nice, it wasn't hot enough for summer. "Tanjiro, what's wrong? Is it hot today?"

"No, no..." Tanjiro hurriedly waved his hands, trying to hide his guilty conscience.

Tanjiro coughed lightly and said to Zenitsu, "From now on, Zenitsu, you need to show your cool side in your daily life. Don't always be lazy, and don't always complain..."

Just as Tanjiro was speaking eloquently, Zenitsu was giving Tanjiro a meaningful look.

Tanjiro asked in confusion, "Zenitsu, what's wrong?"

Kanao's voice suddenly came from behind Tanjiro: "Tanjiro, are you very experienced in pursuing girls?"

Tanjiro couldn't help but tremble, stiffly turning his head. Even though Kanao's face was expressionless, Tanjiro still felt a cold wind brush past him.

Tanjiro hurriedly explained, "Kanao, that's not how it is, let me explain..."

Kanao tilted her head and said, "Why are you explaining this to me? I'm just here to tell you, on Nezuko's behalf, that Nezuko has been looking for you ever since she woke up."

After saying that, Kanao disappeared from the spot.

Tanjiro, hearing that Nezuko was looking for him, also disappeared from the rooftop.

Inosuke asked Zenitsu, puzzled, "What's wrong with Santaro? He seems a bit strange. Is it because of Kotaro?"

Zenitsu retorted, "It's Tanjiro and Kanao! Inosuke, you're so straightforward, you'd never understand. Tanjiro's spring has already arrived. I wonder when mine will come."

Meanwhile, in the research room, the Butterfly sisters had very dark circles under their eyes, their nerves were on edge, and they kept shaking the medicine in the test tubes.

Because Tamayo is a demon, she shouldn't feel tired, but at this moment she felt extremely exhausted, constantly recording research data on paper.

The Butterfly Sisters and Tamayo have been working day and night in the laboratory for nearly a week, because the research on the human-transforming drug has reached the final stage, just one step away from completion.

No one dares to rest until they break through this final hurdle, fearing that once they stop, they will lose their inspiration.

As Kanae Butterfly continued to shake the tube, the medicine inside became extremely cloudy.

Kanae Kocho said solemnly, "It's time, Shinobu, drip it in!"

Butterfly carefully dripped in a little red liquid, a concentrated essence extracted from Tsugikuni's eyes and Nezuko's blood.

As the red liquid dripped into the murky potion, the Butterfly Sisters and Tamayo held their breath, not daring to blink, staring intently at the potion.

The cloudy medicine gradually became clear, until finally it became as clear as water.

The Butterfly Sisters and Tamayo breathed a sigh of relief, held hands, and were very excited.

"The human transformation drug has been successfully produced!"

However, this is not the time to let our guard down. Any newly developed drug needs to undergo clinical trials to verify its effectiveness.

On the hospital bed behind Tamayo, there was a man who was tied up tightly.

Since the demons, including the other demons used as research material, had died, this man was a demon that Yosuke had captured from outside for the Butterfly Sisters and Tamayo to study.

Kanae Kocho injected the medicine into a syringe and then injected it into the man's body.

The man, who had been struggling because he was bound and restrained, gradually calmed down after being injected with the drug.

The man's bright red pupils returned to their original color, and the demon horns on his head gradually fell off.

Judging from his appearance alone, the man at this point was no different from a normal human being.

Chapter 118 Success

Tamayo drew a vial of blood from the man and then began the final examination; the success or failure hinged on this moment.

Kanae Kocho asked the man in the hospital bed, "Do you remember what happened before?"

The man's eyes were initially confused, but after a while, they cleared: "I am Takumi Changgu. I remember being attacked by a strange-looking monster, and then I lost my memory. Where am I? How did I get here?"

Kanae gently reassured the man, "Don't worry, we are doctors. You were sick before, so you came here for treatment. You are safe now."

At this moment, Tamayo had finished testing the man's blood and came to the Butterfly Sisters' side.

Even though she was trying her best to restrain herself, Tamayo's slightly trembling body showed that she was very excited.

With a joyful expression, Tamayo announced, "It's a success! He's now human again!"

"I'll go tell Master this good news right away!" Shinobu Kocho said, and before she could finish, she left the research lab to find Yosuke.

At that moment, Yosuke was having tea with Kotsukuni Iwakatsu in his room when he saw Shinobu Kocho panting heavily and asked in confusion, "Shinobu, what's wrong?"

Shinobu Kocho took a deep breath and said, "Master, it's a success! The human transformation medicine is a success!"

Yosuke and Tsugikuni Iwakatsu jumped to their feet, their eyes wide with disbelief, and asked again, "Really?"

Shinobu Kocho replied again, "It's true! The clinical trial was successful. The man has turned back into a human from a demon, and all his physical signs are no different from a human's!"

Yosuke and Iwakatsu Tsugikuni, unable to contain their excitement, followed Shinobu Kocho into the research lab.

In the laboratory, the man had been freed from his restraints, but his body was still very weak.

Yang Jie and Ji Guoyan felt the physical characteristics of the man.

He had no characteristics of a ghost, nor did he sense any ghostly aura. The man was now completely human.

Feeling awkward under so many eyes, the man cautiously asked, "Um... may I leave now?"

Tamayo smiled and said, "Of course, your illness is completely cured."

The man bowed to the crowd and said, "Thank you so much for healing me. I will remember this kindness for the rest of my life."

The man is gone, but what he brought to the world is that humans who have become ghosts now have a way to become human again!

If we're talking about who was the most excited about the successful development of the human-transforming drug, it would have to be Tanjiro.

Upon receiving the news, Tanjiro immediately brought Nezuko to the research lab.

Tanjiro asked impatiently, "Can Nezuko really turn into a human?"

When Tanjiro received clear responses from the Butterfly Sisters and Tamayo, he was completely stunned.

To allow Tanjiro to witness this important moment in person, Kanae handed Tanjiro the syringe for the human transformation drug, which Tanjiro then injected into Nezuko.

Tanjiro's hands trembled slightly as he recalled the tragedy of that night, when only Tanjiro and Nezuko, who had become a demon, remained of his family.

To save Nezuko, who had been turned into a demon, Tanjiro resolutely picked up his sword. Even though his hands were calloused and he was wounded all over in battle, he never backed down. Only Tanjiro knew the hardships he endured.

Now that he can finally fulfill his promise to Nezuko and become human again, Tanjiro is somewhat at a loss.

Yosuke patted Tanjiro on the shoulder and encouraged him, "Tanjiro, isn't all your hard work for Nezuko? Now is the time, what are you still hesitating for?"

Tanjiro said uneasily, "I'm just... a little confused. If Nezuko regains her memories, how should I explain everything that happened to her?"

Yosuke comforted her, "Don't worry, you're the one who understands Nezuko best here, Tanjiro. The kind and gentle Nezuko will definitely understand everything you've done."

Tanjiro looked at Nezuko beside him. Nezuko seemed to sense Tanjiro's confusion, took his hand, and called out in broken, halting words, "Brother... Brother..."

Tanjiro gripped Nezuko's hand tightly, nodded firmly, and with his hands no longer trembling, injected the human-transforming drug into Nezuko's body.

Nezuko, who had been injected with the human-transforming drug, began to sway uncontrollably as if she were drunk, and then collapsed unconscious in Tanjiro's arms.

After a series of investigations, Shinobu Kocho provided an explanation.

"It's normal for Nezuko to fall asleep. Because Nezuko has been a demon for too long, and she has overcome the effects of sunlight, her blood is completely different from that of a demon. However, the effects of the human-transforming drug are still working. It's just that her body's protective mechanism is putting Nezuko into a deep sleep, and she needs to sleep to recover her strength."

Tanjiro breathed a sigh of relief: "It's good that you're alright."

Kanae took two vials of the newly made human-transforming medicine and handed them to Yosuke and Tsugikuni Iwakatsu: "Master, Mr. Tsugikuni, you should get the injections too."

Yosuke looked at the human-transforming drug in his hand for a while, then shook his head and returned it to Kanae: "It's not time for me to turn back into a human yet. If I turn back into a human, I will lose the ability to fight against Muzan Kibutsuji. Please keep this drug safe for me. I will inject it after everything is over."

Like Yosuke, Katsuya Tsugikuni returned the medicine to Kanae: "Yosuke and I share the same idea. It's not time to inject it yet. Once the war starts, we fearless demons must be at the forefront to minimize casualties."

Kanae Kocho reluctantly put it away: "I never thought that after all the hard work of developing the human-transforming drug, only Nezuko would use it."

With a solemn expression, Kokushiro Tsugikuni said, "Kibu Muzan is not dead. It's not over yet. What we can do now is to preserve all our strength to face the battles to come."

Tamayo suddenly remembered something, and a mischievous smile appeared on her lips: "Guess who is the least willing to turn from a demon into a human?"

Shinobu Kocho said confidently, "Is there even a need to guess? It's definitely Kibu Muzan!"

Tamayo's smile widened: "Yes, I'm quite looking forward to seeing what Kibuy Muzan will look like after he becomes human."

I developed many drugs specifically designed to weaken Muzan Kibutsuji, but they lacked the necessary prerequisites to take effect. Now that we have the human-transforming drug, the conditions for the other drugs to work are met.

Faced with Tamayo's cunning smile, Yosuke and Tsugikuni Iwakatsu exchanged a glance and felt a chill run down their spines.

Chapter 119 Massacre

Although the human-transforming drug has been successfully developed, it cannot be mass-produced yet because the most important ingredient in the drug is the blood of Nezuko or Kokushiro.

Nezuko has already taken the human-transforming drug, which means that currently only Kokushibo from Tsugikuni can provide the blood needed to make the drug.

Yosuke summoned Osamu, Gyutaro, Koyuki, and Koume, told them that the human-transforming drug had been successfully developed, and asked them if they wanted to receive the injection.

All four of them refused without hesitation. Although it was unexpected, it was also reasonable. The reason for their refusal was not surprising to Yosuke, because they all shared a common goal: Kibuy Muzan.

In the Infinite City.

After waiting for a long time, Kibuyaku Muzan impatiently asked the God Lord, "Don't you have the ability to foresee the future? Did Ubuyashiki Yosuke actually use the human-turning drug?!"