Swordsmith Village.
Kiyomizu sat at the dining table, looking at the leftovers in front of him, and let out a satisfied burp.
Before he arrived at the Swordsmith Village, Uesugi Yu had people send the collected plants to the Demon Slayer Corps.
As the Pillar with the highest status in the Demon Slayer Corps, the Kakushi immediately sent him the several baskets of things they had collected, and Kiyomizu brought them to the Swordsmith Village.
For almost every meal, Kiyomizu changed the way he cooked these vegetables.
Wild vegetable and radish soup, wild vegetable stew with meat, wild vegetable braised spare ribs, he had used all the methods he could think of.
Unfortunately, until now, Kiyomizu's blood had not changed.
Collecting a tube of his own blood, dripping a drop of the diseased leaf's blood into it, letting it sit overnight, and then exposing it to the sun the next day, would always turn into gray smoke and dissipate within a few seconds.
The only gain might be that his cooking skills had improved a lot.
"I should find a way to make the remaining wild vegetables into pickles so they can be stored longer."
Stretching lazily, looking at the clear weather outside, Kiyomizu went outside, intending to take a walk to digest his food.
However, before he had gone far, Kiyomizu was stopped by three swordsmiths wearing fire man masks.
An old man, a middle-aged man, and a child.
Kiyomizu knew the middle-aged man; it was Haganezuka Hotaru, who helped him forge his Nichirin Blade.
"Yo, Haganezuka-senpai, I presume this is the village chief, Tekkado Kosou, everyone came to find me, is there something you need?"
Kiyomizu asked the three.
Before Haganezuka Hotaru and Tekkado Kosou could answer, the child pointed at Kiyomizu.
"The things you had us make with Scarlet Crimson Iron before, were they for creating mechanisms to deal with demons?!"
"Kotetsu, don't be rude to the Retsu Pillar-sama."
Haganezuka Hotaru reached out and pressed down on the child's head, apologizing to Kiyomizu.
"Let this old man speak."
The old man jumped down from Haganezuka's shoulder, the same height as Kotetsu next to him.
Secondly, at Kotetsu's request, to ask if Retsu Pillar-sama is proficient in the art of mechanisms."
Kiyomizu looked at Kotetsu.
"I don't have any other requirements for the Nichirin Blade, just that it's sharp and tough enough. As for the art of mechanical puppets…"
Under Kotetsu's expectant gaze, Kiyomizu nodded.
"I'm very good at it, so good at it that it exceeds your imagination."
Seemingly to prove his words, Kiyomizu stretched out his left hand, and the armor-type puppet in the backpack behind him quickly flew out and assembled into a set of ancient armor.
The three swordsmiths were stunned.
What kind of operation is this, as magical as a Blood Demon Art?
Seeming to see through the thoughts of the three, Kiyomizu immediately said:
"I wonder, do you all know about puppet shows? It's a folk art that uses thin threads and mechanisms to control multiple puppets."
Kiyomizu took out a strand of thread that was difficult to detect with the naked eye, which he had deliberately prepared beforehand, showed it to the three, and quickly put the armor back into the backpack.
Puppetry was his forte, and Kiyomizu also knew that if he encountered problems that could not be solved by swordsmanship alone in the future, he would definitely have to use puppetry, so he had already prepared corresponding explanations.
The three looked at each other in shock.
They had heard of puppet shows, but Retsu Pillar's performance was a bit too outrageous, right?
It's as magical as a Blood Demon Art!
"Ahem, of course, relying on those alone is not enough to do what I do, but I am a genius, and my family is rich and well-connected, so I can access the most advanced technology in the world and transform it into my own use, and innovate…"
Kiyomizu spoke nonsense, embellishing his words, making the three swordsmiths in front of him dizzy.
But at least they could be sure of one thing.
This Retsu Pillar at least knew something about mechanics.
"Ahem, stop, stop! Retsu Pillar-sama, that… actually, we wanted to ask you to see if you could help us repair a puppet from the Warring States period. It was made by the most outstanding swordsmith of that time, imitating the moves of the strongest swordsman of that time. However, because it was too heavy to move long distances and too difficult to make, it was not continued to be produced.
Without error, one head, one hair, one inside, one appearance, one capacity, one is watching!
However, for three hundred years, that powerful puppet has always been the force protecting the Swordsmith Village, but it has been too long since then, and it has been somewhat damaged. Even Kotetsu, as the descendant of that swordsmith, can only barely repair most of its functions, and cannot fully exert its former power, so we thought…"
Haganezuka Hotaru stopped and looked at Kiyomizu expectantly with Kotetsu.
Kiyomizu said, "Then let's go take a look."
He remembered that in the original timeline, there was indeed such a puppet, called Yoriichi Type Zero.
It was unmanned and did not know what it relied on for power, but it had the combat power to fight against the Pillars. Tokito Muichiro took it from Kotetsu to train and eventually broke it.
Kiyomizu was quite interested in this.
Yoriichi Type Zero was a puppet made by a predecessor based on Yoriichi's moves. However, because Yoriichi's speed was too fast, it was impossible to reproduce his moves with just two arms, so six arms were used instead.
Doesn't that mean that the moves used by this puppet are related to Sun Breathing?
He had already reproduced Sun Breathing through Tanjirou, so could he discover some new progress and have new insights by comparing it with the moves of this puppet?
This puppet can exert the combat power of a Pillar-level even when fighting on its own, so what if he controlled it?
Under the control of Chakra threads, the puppet's moves would no longer be rigid, and its power, speed, and other aspects would continue to improve. What level of combat power could it reach?
Moreover, three hundred years ago, it was possible to create a puppet with such combat power by simply relying on mechanics. The person who made Yoriichi Type Zero must have been a master of mechanics.
Kiyomizu was also thinking about whether he could create a puppet with Pillar-level combat power by simply relying on mechanisms with his own abilities?
He wanted to try.
Moreover, he also wanted to know whether the puppet mechanics of two different worlds could collide and create different sparks?
Following the steps of the three, Kiyomizu came to a yard.
Under the eaves of the yard, Kotetsu pulled open the covering cloth, revealing a puppet with only half a face, but with six arms.
"Retsu Pillar-sama, this is it!"
Kotetsu excitedly introduced to Kiyomizu.
Kiyomizu held his sword, looking at this tall puppet, which was ten centimeters taller than him.
