I, Hikaru Uchiha, join the chat group

The next morning.

Uchiha Hikaru got up early under the influence of his biological clock. After washing and having breakfast, he went to the nearby training ground at the invitation of Karin and Kimimaro to watch them perform ninjutsu.

These two little guys have good talent for cultivation.

Especially Kimimaro.

He is two years older than Karin and has a certain foundation in physical skills. When he was imprisoned in the dungeon by the Kaguya clan, he was already close to the level of a Chunin. Now that he has come to the Sound Village and received several months of small-class instruction from Orochimaru, he has made remarkable progress.

"Xiao Ai, what do you think?"

Uchiha Guang turned his head and glanced at the military girl beside him.

"……good."

Esdeath crossed her arms and responded casually, "Although the strength is a little lacking and the movements are not crisp enough, but for this age... it's barely acceptable. With the combined efforts of two people, we can almost hunt down an ordinary dangerous species."

"Forehead……"

So, is the criterion for evaluating success or failure based on whether or not one can hunt dangerous species?

But yes.

You know, when Esdeath was in her teens, she had already hunted most of the dangerous and even super dangerous species in the northern part of the empire alone. In the same age group, let alone Karin and Kimimaro, even Senju Hashirama and Uchiha Madara are unlikely to be able to compare with her.

the other side.

After Karin and Kimimaro finished their sparring, they came back panting, and then looked up at Uchiha Hikaru with anticipation: "Sister Hikaru, how is it?"

"Yes, Not Bad."

Uchiha Hikaru bent down, praised him a few times with a pleasant face, corrected a few wrong habits, and then looked at Kimimaro - after the previous drill, the little boy's upper body clothes had a lot of holes poked by bone spurs, as if it had become a trendy see-through outfit, and there was no telling how many times he could wear it.

Hmm... I can consider using the hair of the East Sea Cloud Dragon to make him a soft armor. Otherwise, every time I use the Corpse Bone Vein, the clothes will explode, which is not only unsightly, but also wasteful.

"By the way, has Orochimaru treated you recently, Kimimaro?"

"some."

Kimimaro nodded immediately and said in a very obedient tone: "The teacher arranges for me to have a full body checkup every two weeks. When he is not around, Nono-san will take over... He also prescribed some medicine for me to take every day."

"Oh, what are these medicines?"

"Green ginger, white atractylodes, red flame flower, cold grass..."

"?"

What are these?

Seeing Uchiha Hikaru's puzzled expression, Karin next to him immediately explained a few words, saying that these were all medicinal herbs related to bone development, some of which had been used by the Kaguya clan since the Warring States Period, and Orochimaru got this prescription through private channels, and on this basis he added and subtracted herbs and made some improvements.

In addition, Orochimaru is currently trying to use the active substances in the cells of the "demon" and "dragon king" to enhance Kimimaro's self-healing ability, thereby resolving the problem of the Shikotsuki bloodline disease. However, this research has just started, and a lot of experimental demonstrations are needed before it can be tried on Kimimaro.

"understood."

Uchiha Hikaru nodded and planned to take some time to ask Orochimaru and compile a copy of the relevant information to give to Dr. Gero. If both sides conduct research simultaneously, they should be able to improve efficiency.

But now...

Orochimaru should be busy making plans for clinical trials.

So Uchiha Hikaru didn't plan to go over and disturb them immediately. After encouraging Karin and Kimimaro, he took Esdeath for a walk around the village.

All the way through the long street.

Walked out of the Sound Village.

We followed a rugged path and arrived at a small hill several kilometers away.

Here, Uchiha Guang stopped, found a clean stone to sit down, and stretched.

With this movement, the girl's soft waist curve was fully displayed, and a small section of her white and firm vest line was revealed under her T-shirt, making people unable to take their eyes off.

"Which one to drink, Xiao Ai?"

Uchiha Hikaru took out juice and cola from the universal capsule and looked at Esdeath.

After the latter took the juice, she also unscrewed the pull ring of the Coke, took a few sips while feeling the cool mountain breeze, and then released Mingnu from another sealed scroll.

"...Lord Guang."

Mingnu was still holding the pipa. After appearing, she roughly identified the things around her, then bowed to Uchiha Guang.

"Ah."

Uchiha took two more sips of Coke and looked at the long-haired female ghost in front of him: "Try it out, can your Infinite City be used normally here?"

"……please wait."

Mingnu tried to pluck the strings.

next moment.

Her figure disappeared out of thin air in front of Uchiha Hikaru and Esdeath.

Seven or eight seconds later, it appeared again.

"Ok?"

Esdeath's nonchalant expression disappeared and turned serious: "Is this ghost's ability similar to Shangri-La's spatial ability? It looks quite interesting."

"really."

Compared to Esdeath, Uchiha Hikaru observed more carefully.

In her opinion, the movements of Mingnu entering and leaving the Infinite City are still a little different from real teleportation. In other words, it is necessary to "pluck the strings" before entering and leaving. The pre-swing time is about a few tenths of a second.

For most people, this time can be basically ignored, because even if they see it, they will not have time to react.

But if it was a master with amazing eyesight and nerve reaction speed, it would be possible to kill Mingnu the moment she entered or left the Infinite City.

Of course, not many people can do this.

Moreover, the location where Mingnu disappears and reappears may not be the same. In theory, she can even directly project herself dozens of miles away. If she is a shameless person like Muzan, she will lie dormant after entering the Infinite City just now, and come out after decades, then Uchiha Hikaru may not be able to find her.

——The "Eight Thousand Spears" mark cannot be connected when the opponent is in a different space.

"By the way, if we continue to feed Muzan's blood to Naruto, can we take the blood demon art to a higher level?"

This thought flashed through Uchiha Guang's mind, but he whispered: "Pull me in to take a look."

"it is good."

Mingnu nodded in agreement.

As the strings trembled, her figure disappeared again, and then Uchiha Hikaru also felt his eyes blurred. When his vision returned, he appeared in a light brown space, with his feet on a checkered floor of the same color.

——Another space, infinite city.

Uchiha Hikaru has seen this place many times in the anime.

But this is the first time I come here in person.

As far as the eye can see.

Front, back, left, right, up, down... all directions seemed to extend infinitely far away. On the dark background, there were rows of wooden rooms connected like building blocks. Some of them were fixed, while others were moving up and down, like elevators suspended in the air. The visual effect was somewhat shocking.

Uchiha Hikaru placed one hand on his forehead, looked around for a while, and finally fixed his gaze on the ground not far away.

there.

Mingnu was kneeling with the pipa in her hands, her head lowered and her hands relaxed, as if waiting for her to give the next instruction.

"Mingnu, how big is this space?"

"……do not know."

"what?"

A question mark slowly appeared on Uchiha Guang's forehead: "You don't even know your own blood demon technique?"

“…because no measurements have been made.”

"..."

After confirming that Mingnu was not lying, Uchiha Hikaru formed seals with his hands and created seven or eight shadow clones. He flew into the sky using the Air Dance Technique and then flew in eight different directions around him, intending to verify the size of the "Infinite City" by measuring it himself.

Her real body stayed in the current room, stomped hard on the floor, walked to the edge of the room, and looked down.

It was pitch black, like an abyss with no bottom.

"As I recall, you seem to be able to manipulate the terrain of these rooms at will, right?"

"Yes."

This time, Mingnu answered quickly: "This infinite city was derived from me, so I can change the spatial structure here through my own cognition. But it is limited to changing existing things, and cannot create out of thin air."

"In other words, all the experimental equipment used by Muzan were moved in from outside?"

"……Yes."

Mingnu plucked the strings again.

As the light and shadow became confused, Uchiha Guang saw the door of the next room close and open, and the things in the room changed rapidly, as if many tables, chairs, bookshelves, and experimental instruments such as measuring cups, test tubes, and balances appeared out of thin air.

"This is the room where Master Muzan once lived. Please take a look."

Mingnu said.

Uchiha Guang walked in and took a quick look, then glanced at the names of the books on the bookshelf, then turned around and went back.

Muzan Kibutsuji is such a bad person that even Uchiha Hikaru felt a little uncomfortable staying in the room where he lived.

But...

Since Muzan can build his own laboratory here, Uchiha Hikaru can also turn it into a secret base.

"Since we can change the structure of space, then creating a villa or even a castle out of thin air shouldn't be a problem, right?"

"Then this will be used as a bedroom, and this side will be a study, a game room, a theater..."

"Let's buy some sofas, wardrobes, game consoles and other things from outside, and decorate them a little, and then we can use it as a base."

"Hmm... I wonder if the gravity training room can be moved in?"

Uchiha Guang thought so and asked about the restrictions on bringing things.

"This one……"

Mingnu thought for a moment, her words a little vague: "I don't know the maximum size of the things that can be brought in, because before, I only brought in some furniture and supplies at the request of Master Muzan... But as long as the size and weight are not too exaggerated, it should be possible to teleport in and out."

"Yeah……"

Is it an exaggeration to say that the East China Sea Cloud Dragon is several thousand meters long?

If it counts, what if it is reduced a hundred times using a mini bracelet?

Uchiha Guang plans to go back and do a few experiments to see how it goes.

then.

Uchiha Hikaru asked again about Mingnu's ability to "create eyeballs".

According to the latter, those eyeballs were made with her flesh and blood, and were connected to her body's optic nerves. Like other things, they could be cast in and out of the Infinite City by plucking the strings of a musical instrument, and then transmit the images they saw back through the optic nerves.

As for the observation range...

When in the Demon Slayer world, one can observe the situation in half of the Kanto region at the same time, which is roughly several dozen miles in radius.

——In the original story, Naruto used this method to find the Demon Slayer Corps headquarters and the residences of most of the Demon Slayer Corps members. Although the former was leaked by Ubuyashiki Yoya, the fact that she was able to find these places itself proves Naruto's ability.

If it is farther away, it can theoretically be observed, but there will be a certain delay and the seen images cannot be transmitted back in time.

As for the transmission range, it is farther, and accurate delivery can be achieved within a radius of hundreds of miles, but if you want to transmit people directly from Japan to China or even Europe, it is not very realistic.

——If you really want to, you can try, but then Mingnu won't be able to control the location of the drop. It's like throwing someone out with your eyes blindfolded. Where you can throw them depends entirely on luck. If you throw them into a crater, they might end up being fed with magma on the spot.

"That's it..."

Uchiha Hikaru made a rough estimate.

Although the main body of the Naruto world only has five major countries, its area is still quite large. According to Mingnu, the range that can be observed in real time is roughly equivalent to the entire Land of Rice, and the range of precise delivery is equivalent to most of the Land of Fire.

"good."

After all, the energy level of the Demon Slayer world itself is there, and it is already very difficult to have an exception like Mingnu, and the requirements cannot be too high.

Say.

In terms of transmission, Uchiha Hikaru already has "Shangri-La", and Naruto's delivery is just the icing on the cake. On the contrary, the observation ability is more useful, equivalent to a plus version of "Kagura's Mind's Eye". After Muzan Kibutsuji's slicing research makes progress, maybe her "Blood Demon Art" can be strengthened to further expand the radiation range.

present.

Uchiha Hikaru told Mingnu about his idea of ​​a "villa-style castle", and then instructed Mingnu to use her "blood demon art" ability to create it.

Hmm...it feels a bit like playing "Minecraft", or a kid playing with building blocks.

After nearly an hour of deletions and revisions, a small four-story castle finally took shape.

Then, Uchiha Hikaru took out some sundries that he would not need in the short term, such as antiques and paintings that were difficult to value from Minister Ernest and the Red Silk Army, as well as various comic books and video discs, from the universal capsule and placed them in the villa, thus clearing out his backpack.

This cleanup took some time.

At this moment.

The shadow clones that had gone out to explore the way just now came back one after another.