Fortunately, he was a puppeteer, and his greatest skill was creating puppets.
Using the method of creating puppets to manufacture these devices, with the required functions and corresponding principles known, he could still replicate them.
It's just that he lacked some of the corresponding materials, but he could find substitutes, at most making the volume larger and the cost higher.
With the Transparent World combined with the highest inheritance of the Sand Village's puppetry, the precision with which he controlled tools with chakra threads was comparable to that of first-class equipment in the 21st century, and he could also produce other related equipment.
It didn't matter that the manufacture of equipment such as centrifuges required lightweight, high-strength materials like carbon fiber; he only needed to inject chakra into them when using them, just like using ninja tools, to temporarily increase the strength, even if they broke after one use.
And some chips didn't need to be manufactured. On the one hand, his own brain, combined with chakra threads, was equivalent to using his brain as an integrated substitute for chips; on the other hand, even Shimizu couldn't hand-craft nanoscale chips at present.
It's just that the manufacturing process would be very troublesome. Often, a piece of glass would need to be carefully polished, and even Shimizu would have to try repeatedly to produce qualified finished products.
Just as Shimizu was still immersed in making parts, a Kakushi quietly knocked on the door.
"Lord Uesugi, Kazumi has returned."
Since the last Pillar Meeting, the current leader of the Demon Slayer Corps had become two people.
One was the head Ubuyashiki Kagaya, and the other was the acting head, Shimizu.
In order to distinguish between the two, the current members of the Demon Slayer Corps called Shimizu "Lord Uesugi", while Ubuyashiki Kagaya was still referred to as "Master" as in the past.
"I know."
Turning off the buzzing machine and opening the door, Shimizu nodded slightly to the Kakushi and walked towards the courtyard.
On the table, Ubuyashiki Amane was tearing strips of cured meat and feeding a Kasugai Crow.
This was Ubuyashiki Kagaya's Kasugai Crow, named Kazumi, the smartest Kasugai Crow in the Demon Slayer Corps, with an IQ close to that of an adult. Just looking at its wise eyes, one could tell that this Kasugai Crow was different from other Kasugai Crows.
Seven years old, it was in its prime among crows, strong, with smooth feathers, and two sizes larger than other adult Kasugai Crows.
Plus, like other Kasugai Crows, it could talk, making it seem like a crow spirit.
"Shimizu, you've come. Kazumi has found Lady Tamayo's location."
Amane said softly to Shimizu.
Finding Tamayo was Shimizu's request.
In the original work, Muzan was able to be dragged until dawn and killed, thanks in no small part to the poison jointly created by Tamayo and Shinobu, which was equivalent to first cutting off a large portion of Muzan's health bar and adding several debuffs.
"No need to thank me."
The big crow stood on the stone table, swallowed a strip of cured meat, and looked at Shimizu with bright eyes, saying:
"The other party requests to meet at the agreed location tomorrow, and the number of people meeting with them cannot exceed three, with a maximum of only one Pillar, otherwise they will not appear."
"Understandable. After all, they are also demons, so naturally they are worried that our Demon Slayer Corps will attack them. I'll just take one or two people there tomorrow night."
Shimizu didn't need to worry about his own safety.
Unless he encountered Muzan, he might not lose even if he faced Kokushibo, Upper Moon One.
Tamayo and Yushiro had some tricks, but their abilities were more inclined towards support and control, and they needed to cooperate with someone with absolute strength to exert their power, so they couldn't threaten him.
"Then I'll go with you tomorrow. Your and my identities should be enough to gain their trust. Also, Shinobu has just become pregnant recently, so you don't have to rush to do those things at night. Spend more time with her when you have time."
Amane stood up from the stone bench and instructed Shimizu.
"I understand."
Shimizu turned his head and looked in another direction in the courtyard.
Kocho Shinobu leaned against the head of the bed, her lower abdomen slightly bulging, holding a pharmacology book that Shimizu had someone buy from Tokyo Medical University, reading quietly.
She was now pregnant, and three months ago, Shimizu had a one-shot wonder.
Through the Transparent World, Shimizu could clearly see the not-yet-fully-formed embryos in her womb, which seemed to be twins.
The gender couldn't be determined yet, and it would take another month or two for the fetus to show more obvious sexual characteristics.
… …
… …
The next day, at night, at the hour of Hai (9-11 PM).
In a bamboo forest on the outskirts of Tokyo.
Shimizu, wearing a light blue robe and a blue and white haori, walked in here.
He was impeccable, with no errors in his expression or attire!
To his left was Ubuyashiki Amane, holding a golden Nichirin Blade, and to his right was the legendary Road Pillar, Murata – he mainly brought him along to borrow the good luck of this passerby king who could lie down and win through the Infinity Castle without injury.
"Where are they?"
Ubuyashiki Amane looked at the quiet bamboo forest, her slender fingers gripping the hilt of her sword, her beautiful eyes constantly surveying the surroundings.
Shimizu scanned the surroundings and looked in a certain direction.
"Yushiro, it seems we've been discovered. Take away your Blood Demon Art."
Tamayo sighed softly and said to the blue-haired boy beside her.
"Yes, Lady Tamayo."
Yushiro responded and removed his Blood Demon Art, revealing the figures of the two.
His Blood Demon Art could help others become invisible, and could also temporarily control the enemy's brain with illusions.
"You kept your word, indeed only three people came."
Tamayo and Yushiro walked out of the bamboo forest, sizing up the three of Shimizu.
"The marriage partner of the Shrine Maiden clan and the Ubuyashiki clan, and an ordinary member and a Pillar, you came on behalf of the Demon Slayer Corps, do you want to cooperate with me?"
Tamayo asked the three, her vermilion lips parting slightly.
Having lived for hundreds of years, she could easily recognize Amane's identity through the patterns on her clothes, and could also judge that Shimizu was a Pillar through his long, steady breathing, and a very strong Pillar at that.
As for Murata…
Well, he looked quite ordinary, and his strength was also quite ordinary.
"You haven't mistaken my identity, but the person in charge here is not me, but him, and now he is not just a Pillar anymore, but the real leader of the Demon Slayer Corps."
Tamayo frowned.
It seemed something had happened to the Ubuyashiki clan.
"Miss Tamayo, I am Uesugi Shimizu, the current acting head of the Demon Slayer Corps."
Shimizu took a step forward and introduced himself to Tamayo.
