I will attack as a player!

Chapter 17 Guessing the Poison

Without the Kamado family and other ordinary people, Tomioka Giyuu and Chu Wuji, relying solely on their speed, arrived at the Butterfly Mansion in just five days, even carrying a box containing Tanjiro.

This is a Japanese-style manor located in the mountains and forests, covering a vast area and surrounded by wisteria flowers.

Just by getting close, the fragrance of wisteria mixed with the smell of disinfectant wafted over.

At the main entrance of the Butterfly House, a woman wearing a haori with insect wing patterns and a butterfly-shaped hair clip at the back of her head had been waiting for a long time.

They came forward to greet Chu Wuji and his companion upon seeing them.

"Nice to meet you. I'm Shinobu Kocho, the Insect Hashira, and the person in charge of the Butterfly Mansion." The woman introduced herself to Chu Wuji with a stiff smile, then looked at Giyu Tomioka: "Mr. Giyu, what about the special demon mentioned in the letter?"

"Here." Giyu Tomioka took off the wooden box from his back and placed it on the ground. "The person has been brought to the Butterfly Mansion. Mr. Chu and I will take our leave now."

"......Hi."

"Wait a moment." Chu Wuji interrupted Giyu, who was about to leave. "If I'm not mistaken, this should be the place responsible for the medical care of the Demon Slayer Corps. If possible, I would like to learn some medical skills here."

"To study medicine?"

Giyu Tomioka was a little puzzled. Why not just leave these things to the logistics staff?

For him, learning medicine took a considerable amount of time and was quite tedious.

After thinking for a moment, Yiyong said, "Why learn such boring things?"

"Gurgle!"

Before Chu Wuji could speak, he heard the sound of Kocho Shinobu's veins bulging.

"Mr. Giyu's words are as annoying as ever."

Now that things had come to this, Giyu realized that his words had been ambiguous, but he couldn't think of a way to defend himself. He opened his mouth and could only weakly plead, "No one dislikes me."

Shinobu Kocho took a deep breath, her smile still on her face, but she ignored Giyuu and instead looked at Chu Wuji: "Mr. Chu, why do you want to learn medicine?"

"Mr. Yiyong should have mentioned my background in his letter." Chu Wuji thought for a moment and gave a reason: "I also know some medical skills, so I naturally want to broaden my knowledge on my travels."

This is a lie; Chu Wuji knows nothing.

But Zero should not underestimate the knowledge base of E-level artificial intelligence.

Furthermore, Chu Wuji was not curious about the medicine of this world, which was many years behind reality, but rather about the medical skills of Shinobu Kocho herself and other extraordinary people in this world.

After all, the fact that Tamayo and Shinobu could develop such a bizarre medicine that could consume a year's lifespan in a minute is enough to reveal the strangeness of their medical skills.

This greatly helped him in his later research on Muzan's flesh and blood.

Kocho Shinobu could accept Chu Wuji's words, and she also wanted to know if she could learn anything from this guest from the Far East, so she agreed to Chu Wuji's request.

Now it was Giyu Tomioka's turn to be in a dilemma.

He originally intended to take Chu Wuji to meet the lord so that the lord could persuade Chu Wuji to join the Demon Slayer Corps.

"I will speak to the lord."

It sounded like a naughty child tattling to the teacher, but only those familiar with Yi Yong understood that the other party truly meant no harm and simply wanted to ask the lord about Chu Wuji.

Therefore, Shinobu Kocho ignored him and instead found two members of the Hidden Cave to lift the box containing Tanjiro and go inside.

Chu Wuji was left to kindly say goodbye.

Inside the Butterfly Mansion, the smell of disinfectant became even stronger, and every now and then, members of the Hidden Sect could be seen rushing past pushing wounded people on stretchers.

Shinobu Kocho was not like Giyu, who lacked emotional intelligence. After entering the Butterfly Mansion, she did not leave first because of Tanjiro's matter, but instead found a room and sat down with Chu Wuji.

"I also learned about Mr. Chu's matter from his letter." Shinobu Kocho poured Chu Wuji a cup of wisteria tea. "As for the matter of ghosts, I probably don't need to elaborate."

Seeing Chu Wuji nod, Shinobu Kocho continued, "Although I am a 'Pillar' of the Demon Slayer Corps, I don't actually have the same physical abilities as the other Pillars."

"Even because of my height, I'm unable to cut off the heads of some demons."

"So I thought of another way, which was to use poison."

After saying that, Shinobu took out a test tube from her bosom and placed it on the coffee table in front of Chu Wuji.

In the crystal-clear glass test tube, the purple liquid gleamed with a jewel-like luster.

"This is a toxin I developed using wisteria flowers that ghosts fear. Ordinary ghosts will die from cell rot caused by the poison if they come into contact with it."

After saying this, Shinobu Kocho fell silent.

This is a test, a test of whether Chu Wuji's medical skills are enough to make him spend a lot of time communicating with him.

Chu Wuji also noticed this, and immediately took the test tube, opened the bottle, and fanned the air to his nose to sniff it.

"Zero, analyze this."

Hmph, let me show you the limits of my Zero!

As soon as the thought arose, Zero in the brain-computer interface began to search.

[Searching...]

In just a moment, a large amount of information was displayed from the brain-computer interface.

"Based on the information provided by Ms. Shinobu Kocho, I can only deduce that it contains alkaloids extracted from wisteria seeds or stem bark, which is also confirmed by the irritating reaction of my nasal mucosa when I sniff it."

"Since I haven't been able to see the poisoned person, what remains is my deduction: in order to use poison in actual combat, it must meet the requirement of rapid death, and the regenerative ability of the demon must also be taken into account."

"These two points can be achieved using hemolytic toxins and neurotoxins. Considering the area of ​​influence of your Demon Slayer Corps, the best materials to collect are the hemolytic toxins of the Japanese viper and the neurotoxins of the cobra or the stone clam."

After saying that, Chu Wuji put down the test tube and looked at Shinobu Kocho, whose stiff smile had disappeared and whose face showed a hint of shock.

"...Absolutely right, I admire Mr. Chu's medical skills."

In fact, Shinobu Kocho only wanted Chu Wuji to tell her which part of the wisteria flower's poisonous extract came from, but she never expected that Chu Wuji would reveal both the hemolytic toxins and neurotoxins in it.

Furthermore, Chu Wuji was actually wrong about one thing: Shinobu Kocho did not use Japanese vipers or cobras, but rather Japanese wasps.

This toxin is far less potent than that of a viper, but its advantage lies in its ability to be farmed and mass-produced.

Although many doctors could give an answer after some thought if the question were raised to the public, none could provide one as quickly as Chu Wuji.

Not only was his knowledge accurate, but Chu Wuji, an outsider, also had an incredibly clear understanding of the types of poisons the Demon Slayer Corps could obtain.

Thinking of this, Shinobu took a deep breath.

With the help of the person in front of him, he might be able to develop an even more potent poison, and then... avenge his sister!