I, Uchiha Hikaru, join the chat group

In the laboratory.

Bulma first took out a pair of strange-style goggles and gloves, put them on Uchiha Hikaru, and also put on a pair himself, and then took out a device that looked like a flashlight. After pressing the switch, a narrow and blade-like light purple beam was immediately released, extending to two or three meters before spreading slightly.

"This is a laser sword. The components of the beam include ultraviolet, infrared... and gamma rays and X-rays. As long as you press a button, they can be released in the form of high-energy beams, and then constrained by magnetic fields to form the shape of the sword. You can adjust the intensity of the light here when using it..."

"However, this kind of beam will cause some damage to human skin. You need to wear goggles and gloves, and be careful not to hit others... If Xiaoguang is you, there will definitely be no problem in using it."

"Um……"

Uchiha Hikaru watched Bulma displaying several lightsabers one by one, and pondered for a moment: "Have you paid the copyright fee to the Jedi Order?"

"ah?"

Under Bulma's puzzled gaze, Uchiha Hikari walked over to take a lightsaber without explaining too much, and tried to wave it a few times: "These beams...are not tangible?"

"Of course, it's just light, how could it have an entity..." Bulma's tone was matter-of-fact.

Too.

Whether it is a laser or a ray, it is essentially a kind of electromagnetic wave. When it comes into contact with each other, it will pass through directly. It is impossible to crackle for a long time like a fluorescent tube.

"But what you said, Xiaoguang, is theoretically possible."

Boomer rubbed his chin and thought: "If the laser is replaced by ultra-high-density plasma, and a strong constrained magnetic field is used to control their shape, it can indeed cut objects like a real sword... But the plasma particles After colliding with neutral air, energy will be lost immediately. This problem must be solved to allow the lightsaber to maintain for a long time..."

While Uchiha Hikaru looked confused, Bulma had already given up this idea and walked to the next workbench:

"and this."

"This is an ultraviolet protective garment. It is heavier than an ordinary coat. When you wear it, as long as you press the switch, it can instantly form a strong sun-like light, forming a 360-degree all-round illumination around the body without blind spots. It's as bright as day, and can cover a radius of two hundred meters without the obstruction of trees or buildings, and the energy can last for about two to three hours..."

"...Sun Fist, right?"

Uchiha Hikari couldn't help but complain.

And Boomer continues:

"But last time I heard what you and Tanjiro said, I wasn't sure if this thing would be useful, so just to be on the safe side, I invented a new thing. Qiang Qiang~ This is it!"

"I named it the 'Mini Bracelet'. As long as you wear it on your wrist and press this button, the whole person can shrink to the size of your index finger, and then you can hide it in your pocket."

With that said, Bulma demonstrated live. As the button was pressed, her body shrank to only a few centimeters at a speed visible to the naked eye. She stood at the feet of Uchiha Hikari and waved.

"...6"

Uchiha Hikaru admitted that he did not understand science.

But in her opinion, shrinking a person instantly to the size of an index finger is much more incredible than a laser sword or plasma. But listening to Bulma's tone, the invention process of this thing seems to be more complicated than the previous two. It went much smoother... Considering that there is a magical thing like the universal capsule in the Dragon Ball world, the principle of changing size anywhere may not be complicated at all.

only……

(This technology tree is not an ordinary crooked one...)

Moreover, even counting from the last time she found the Dragon Ball, the time left for Bulma to invent was only more than two months at most, during which she had to go to school... The efficiency of this invention was really a bit ridiculous.

"Are there any other new inventions, Dorabooma?"

Uchiha Hikaru blinked and looked at Bulma expectantly.

Under her gaze, Bulma scratched his head a little embarrassedly: "No more... In fact, there is another plan that is being improved, which is a firearm version of the laser sword, tentatively named 'High Energy Particle Gun', but that one has just been made There are many technical issues that have not been resolved before the samples are released, so I won’t show them to you this time, Xiaoguang.”

"..."

There really is...

Uchiha Hikaru was a little speechless.

She had previously thought that no matter how talented the 16-year-old girl Boomer was, her level would be limited. In the original plot, things like her invention of spaceships and time machines were almost ten years later. But now it seems...she underestimated the value of the word "genius".

"Limited level" is only compared to the older generation of top scientists such as Dr. Breeve and Dr. Gro, but compared with ordinary scientific researchers, Bulma no longer knows how high he is.

(It seems that I can take the time to talk to Bulma about the idea of ​​the "gravity training room" and come up with this training method in advance...)

Uchiha Hikaru chatted with Bulma for a while, and after verbally finalizing the departure date for Demon Slayer World, he stood up and left.

Then he flew all the way to the holy land of Karin and climbed to the tower to visit the Cat Immortal.

I can tell.

The Neko Sento was a little happy about Uchiha Hikaru's arrival.

After all, Kalin Tower is isolated from the world, and the gods from above rarely come down. Every day, only this lonely old cat stays here, and there is no one to talk to. He can only pass the time by observing the lower world. It is still quite lonely after a long time. Uchiha Guang had anticipated this long ago, so the cat fairy brought a large number of gifts-

A bunch of comic books, novels, CDs, and two DVD players.

"What is this, an invention from the human world?"

"Well, it's something that can help you pass the time."

It's a pity that the entertainment industry in the Dragon Ball and Naruto worlds is not very developed. If those entertainment products on Earth in the 21st century can be moved here, the cat fairy will not have to worry about having nothing to play for decades to come.

After briefly teaching the cat fairy how to use the DVD player and demonstrating it in person, Uchiha Guang raised the problems he encountered in his recent "Qi" practice one by one and asked the cat fairy for advice.

That night, Uchiha Guang cooked with the kitchen utensils left last time and stayed in the tower.

She stayed like this for three or four days.

She was ready to leave and go back.

This time, Uchiha Hikaru did not ask for Senzu beans.

After all, she had brought a large bag of Senzu beans when she went back last time. Although there were many Senzu beans at this time, there were several jars, and the Cat Immortal himself did not care much about Senzu beans, she could not ask for them too frequently, otherwise it would be annoying.

As long as she came to visit from time to time and made a good emotional investment, she could just take a few jars away in the future and realize Senzu beans freedom.

——It is better to be taken away by her than to be eaten up by Yajirobei in the future.

And the god in the temple, most likely, can only have the opportunity to meet through the introduction of the Cat Immortal...

However.

Although Uchiha Hikaru did not speak, the Cat Immortal suddenly called her when she was about to leave.

"What's wrong, Master?"

"... This fairy cat didn't agree to be your master."

The cat fairy first denied Uchiha Guang's title, and then said: "Didn't you say last time that you wanted me to give you a somersault cloud? In fact, in addition to the golden somersault cloud, there is also a black one. This kind of somersault cloud does not require a pure heart, and even people with evil hearts can ride on it. If you don't mind it, you can take one back."

As if to prove his words, the cat fairy raised his cane and waved it. Soon a purple-black cloud flew from the sky and landed in Kalin Tower.

"Huh?"

Uchiha Guang looked at the somersault cloud, vaguely thinking of something, and asked a little unnaturally: "Master, you don't want to throw me down when I'm halfway through the flight, do you?"