Hiding in the sand, splitting into many places, starting with Arkham

Upon request, Shimizu demonstrated the six forms of Thunder Breathing in front of Kuwajima Jigoro.

After watching, Kuwajima Jigoro fell silent.

It wasn't as he had guessed, that Shimizu could only barely manage the complete Thunder Breathing, but rather that he was quite fluent and had a certain degree of proficiency.

"It seems that my meager skills will soon be completely learned by you."

Kuwajima Jigoro stroked his beard as he said this.

What he could teach was naturally more than just the techniques of Thunder Breathing; his own research into breathing methods was also very deep.

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It was estimated that before long, the Demon Slayer Corps would have another Pillar. Coincidentally, the position of Wind Pillar was already occupied by Shinazugawa Sanemi. If Shimizu were to become a Pillar, he would most likely take the title of Thunder Pillar from him.

And what he could do was to shorten this time and make Shimizu even stronger.

"Shimizu, your strength is already sufficient. It just so happens that the next selection at Mount Fujikasane is in a little over a month. During this time, I will be responsible for teaching you Constant Concentration Breathing. If you can master this, you should not be far from becoming a Pillar."

"Then, I will continue to bother you, Senior Kuwajima, for this next period of time."

Shimizu cupped his hands towards Kuwajima Jigoro.

With a little over a month's time, taking some time in between, he should be able to manufacture the puppet exoskeleton.

… …

… …

The strength of the exoskeleton puppets in the Demon Slayer world is limited.

This is due to the limitations of materials and the environment, so its main function is to assist in combat and cooperate with the avatars of the Demon Slayer world to use breathing techniques.

Then, is it possible to create a puppet that can both cooperate with breathing techniques in combat and possess sufficient strength?

The puppets in the Naruto world are temporarily sufficient. With Shimizu's ability, controlling the fourth puppet is still slightly lacking.

And Shimizu's avatar in the DC world has enough resources. The DC world also has sufficiently advanced auxiliary technology, and after such a long time of cultivating chakra, he already has the ability to manipulate two puppets simultaneously.

Originally, Shimizu's plan was to use Black Gold One in conjunction with Black Gold Two. Now it seems that Black Gold One can be retrieved and used as a collectible.

Shimizu wasn't worried about being stolen because, apart from him, no one in the DC world had the ability to use chakra threads to manipulate puppets. They simply couldn't drive Black Gold.

Unless the other party had an energy core like a miniature reactor, and powerful information technology to create an operating system and inherit a bunch of auxiliary hardware onto Black Gold.

If they really had that ability, they could completely become Iron Man themselves and build their own suit. There was no need to steal Black Gold.

The only slightly troublesome thing was that some good things that required special channels to obtain, the Penguin wouldn't sell to him anymore.

The Penguin understood very well that over 70% of the Hogg Union's current momentum was supported by Shimizu's personal combat strength.

Once Shimizu was gone, the huge Hogg Union would collapse.

On the surface, the Penguin still happily did business with Shimizu, saying that everyone should make money together. You get what you want, and I make money, but things like Wayne Enterprises' high-strength flexible rubber, the Penguin never had in stock.

Fortunately, however, Shimizu had opened up another channel.

The physics laboratory at Central City University.

Last time he went to Central City, Shimizu not only gained superpowers in the particle accelerator experiment, but also used money to pave the way and established a relationship with the physics laboratory at Central City University.

He not only used the equipment there to manufacture several Type II Titan serums, but also visited many good things developed by Central City University.

For example, a new type of material jointly developed by their physics and chemical materials departments.

Graphene-enhanced elastomer, this thing can perfectly replace high-strength flexible rubber, with excellent strength, ductility, and toughness.

Due to cost reasons, it has not been commercialized outside the laboratory, but it is enough to provide a more complete, stronger, and more space-saving pneumatic drive system for the new puppet, creating a more mechanically streamlined body.

There are also many other good things.

In the past, when making Black Gold, he only had a budget of several hundred thousand US dollars. Now it has increased more than tenfold, and Shimizu naturally used all the good things he could use.

The frame is mainly made of titanium alloy and cobalt-chromium alloy, which are alloys with extremely high strength and extremely low density. The bulletproof layer of the outer armor is made of these two alloys combined with composite ceramics and carbon fiber with lower density.

The mounted rocket launchers and other weapons maintain the same configuration as Black Gold, and are equipped with a high-voltage electric sword, and a built-in air filtration circulation system.

Without exception, all first-class products are equipped with an internal circulation system!

This is to avoid poisoning.

You can't just use breathing techniques when the Joker uses laughing gas or Scarecrow uses fear gas, right?

"Tsk, as expected of me."

In the workshop, Shimizu stroked his chin, looking at this white metal puppet that was taller than Black Gold, but had beautiful streamlined lines.

The figure is slender yet full of power, and the light-sensitive multi-functional lens in the eyes flickers with a faint blue light. Although it hasn't been painted yet, the white color scheme combined with this shape is full of science fiction.

Shimizu decided to retain the main color when using fireproof paint, not for anything else, mainly for the sake of looking cool.

"Let's call it White Knight."

Shimizu patted the White Knight's metal shoulder, and the panel interface flashed in front of him.

[Puppet Name]: White Knight

[Comprehensive Parameters]:

Height: 2.02 meters

Weight: 134.39 kg

Material: Lightweight alloy, composite fiber, graphene-enhanced elastomer… …

Energy: None

Operating method: Chakra line

[Puppet Rating]: A - (A)

[Comprehensive evaluation]: Armored combat puppet, a product of the high integration of modern engineering and puppetry. With the blessing of some high technology, it has both speed and power. The melee power is huge. When combined with the operator, it will further exert stronger power depending on the operator's own combat ability. With some superpowers and additional components, it can have flight capabilities.

The rating is the same as Big Ivan, but Shimizu believes that White Knight's combat power will be stronger.

Wearing the White Knight, Shimizu walked to the empty parking lot under his car dealership and tested it there.

Although simulation tests can be performed on the panel, Shimizu himself also needs to be familiar with the operation of the puppet in order to avoid mistakes in combat.

The only unsatisfactory thing is that although this garage is big, it seems too un-spacious when flying.