Today, Meikyō has become the strongest fighting force of the Demon Slayer Corps and the greatest reliance for everyone to kill Muzan Kibutsuji. Although he cannot explain why he knows about the special nature of the Kamado family, no one will care as long as he doesn't want to talk about it.
This is the change brought about by the growth of power and status.
"So it's the flesh and blood of three Upper Rank Demons. In that case, the poisons I originally prepared for Muzan Kibutsuji must have room for improvement. But why did I use blood samples from the Kamado family?"
Tamayo took the three test tubes from Meikyō after she broke the seal and looked at Meikyō with curiosity.
Kochō Shinobu also stopped purifying the Wisteria Flower Poison and turned her head in unison.
"They are special. At least based on my experimental results, they have extremely strong resistance to ghost cells, but also perfect compatibility. Perhaps it is possible to use their blood to make a drug that can turn ghosts back into humans."
Kochō Shinobu paused involuntarily in her movements.
"Meikyō, you wouldn't..."
"I will not, at least not while I am in this world. I will absolutely not touch Muzan Kibutsuji's power."
Meikyō naturally knew what Kochō Shinobu was worried about, and smiled slightly at her.
Upon hearing this, Kochō Shinobu breathed a sigh of relief.
"In fact, I did this in order to find a better way to kill Muzan Kibutsuji. The previous Upper Rank Three wouldn't have died even if I had beheaded him. The current Upper Rank Three also has a variety of ways to save his life. If it were Muzan Kibutsuji, there would be even more. But if we could use the antidote to turn Muzan Kibutsuji back into a human, that would be the best time to kill him. Even if we can't succeed, we can still deplete Muzan Kibutsuji's power."
"A drug that turns demons into humans... With Muzan Kibutsuji's abilities, he'll probably discover the clues and remove it soon. However, I think I can use this drug as a cover because... I have other poisons that I developed specifically for Muzan Kibutsuji over the past few hundred years."
Tamayo's gentle face was adorned with a radiant smile.
Three hundred years later, since Tsugikuni Yoriichi, she has finally found hope of killing Muzan Kibutsuji again.
"Three hundred years ago, the Sun Hashira of your Demon Slayer Corps almost killed Muzan Kibutsuji, but at the last moment, he split into countless clones to escape. This is a poison that I have specially developed over the past three hundred years to prevent him from self-destructing and splitting. And this can target the defects in the genes of demons and accelerate their aging. I tried it on myself once, and it aged me fifty years in just one minute. Once Muzan Kibutsuji is poisoned, he has to expend a considerable amount of his power to break down this poison."
"Similarly, you must kill him before he finishes breaking down these toxins!"
Tamayo spoke in a remarkably calm tone about her plan, which she had been preparing for three hundred years.
"You can also add my Wisteria Flower Poison, which is two thousand times concentrated."
Kochō Shinobu finally finished preparing the reagent in front of her.
"The Wisteria Flower Poison I usually use weakens demons rapidly, slowing down their regeneration, speed, and other functions. It can also destroy demons' body cells and kill them. After being concentrated two thousand times, I think Muzan Kibutsuji will really like this gift."
The reagent in Kochō Shinobu's hand emitted a beautiful, shimmering purple glow, but to demons, it was the most deadly poison.
"The next step is to develop a drug that can turn ghosts into humans, and then combine these poisons with blue pigment and fluorescent powder to achieve the desired effect. After that, I will introduce it into the Spider Lily."
Meikyō smiled slightly and concluded that the Spider Lily seed in her hand quietly sprouted and grew, condensing into a flower bud and blooming with a bright red color.
Kyoto.
It was getting late, and at that moment, Kitasato Shibasaburo, a leading figure in the Japan medical community and the first Japan scientist nominated for the Nobel Prize in Physiology or Medicine, was on his way home Kitasato Shibasaburō work.
"Professor Kitazato!"
Suddenly, Kitasato Shibasaburō heard someone calling his name and instinctively turned around to look.
A young man with two scars on his face and a fierce look was walking towards him, carrying a knife.
"My Oyakata-sama requests your presence."
Kitasato Shibasaburō adjusted his Glasses.
"May I ask who your Oyakata-sama is...?"
"You'll know when Mr. Kitazato arrives."
Shinazugawa Sanemi tried his best to put on a friendly smile, but with his face, it only made people think that this guy might be planning to draw his sword and cut me.
At this moment, Kitasato Shibasaburō realized that he was surrounded by swordsmen carrying knives.
"Okay, I guess I don't have the right to refuse."
Kitasato Shibasaburō resigned himself to his fate.
Following a group of swordsmen, Kitasato Shibasaburō arrived at a somewhat secluded house.
"Professor Kitazato, I have long admired your name."
Ubuyashiki Kagaya smiled knowingly as he watched the arrival of this important figure chosen by Meikyō.
"Our Ubuyashiki family would like to ask Ogata to publish a paper, saying that we have found a Blue Spider Lily that is only recorded in ancient medical texts."
"Blue Spider Lily? I've never heard of such a flower. I won't do anything that goes against scientific rigor."
Kitasato Shibasaburō said.
"No, we have it now."
Standing next to Ubuyashiki Kagaya, Akekyou magically produced a blue Spider Lily Meikyō, its petals shimmering with a mysterious fluorescence.
A few days later, Kitasato Shibasaburō finally finished a paper after a great deal of effort and published it. At the same time, he held a press conference at the University of Tokyo to announce that he had discovered a Blue Spider Lily that had only been recorded in ancient medical books. It contained mysterious unknown elements, and the only samples were being cultivated in a research institute in Tokyo.
Thanks to Ubuyashiki Kagaya's efforts, the news quickly spread throughout Japan.
As a family that has continued for thousands of years, the Ubuyashiki family not only controls a powerful force like the Demon Slayer Corps, but also has a strong network and influence throughout Japan, enough to make this news spread to every corner of Japan in the shortest possible time.
Now, we're just waiting for Muzan Kibutsuji come knocking.
Entertainment District.
"Warabihime, this is today's newspaper."
Warabihime is the name that Daki has just become the Upper Rank Five, uses when she plays the role of a courtesan in the Entertainment District.
"Newspapers? I never read those."
Daki sat in front of her dressing table and spoke to the maid behind her in a cold tone.
"Yes, I know, but this contains information about the blue flower that you've been asking us to pay attention to."
Blue flowers?
Daki suppressed her murderous intent and took the newspaper.
"Blue Spider Lily... a plant recorded in ancient medical books from a thousand years ago..."
Isn't this Muzan Kibutsuji what Muzan has been searching for all along?
Daki was startled and hurriedly called out to Muzan Kibutsuji in her mind to send him the message.
"You can go down now."
Daki waved away the maidservants.
Right now, Muzan Kibutsuji's matter is more important.