While Kakashi was in the Land of Hot Springs for training and transformation, research on the Kaito was still being carried out meticulously. However, as the saying goes, 'you may not be able to bloom if you try hard, but you may grow willows by accident'.
There was not much progress in the areas of toxins and the Rinnegan, but the Flying Thunder God Technique that Kaito was researching had made some progress.
Kaito used the Shadow Mouse to sneak into Konoha's library and found the sealed book that recorded the Flying Thunder God Technique. Although the Shadow Mouse could not take the sealed book away, it was still no problem for him to secretly peek in the library when no one was around.
But there is still a huge gap between just seeing and learning. It's like programming. Even if it is something with such tight logic, people with talent can learn it quickly, but people without talent will never understand it in their entire life.
The Flying Thunder God Technique is much more difficult than ordinary programming. The most important point is the talent in time and space.
Obviously, Kaito has a talent in this area.
Maybe it's because of the time travel, maybe it's because of the body itself, or maybe it's some other reason.
In short, after watching Minato Namikaze's Flying Thunder God Technique up close, he began to sense the fluctuations in space.
However, Kaito did not concentrate on studying the Flying Thunder God Technique. He just learned it occasionally while reading picture books or doodling to relax.
Before Kaito learned how to use Flying Thunder God, he discovered something interesting.
It turns out that shadows in this world can not only be transformed into physical energy, but also contain a space.
It was a space of black and white. The black was the shadow in reality, and the white was the projection of light in the shadow world.
Kaito entered the shadow world, but he couldn't stay there for long. He could only move around using his shadow, and movement was very difficult. He couldn't breathe, hear any sounds, or feel the touch of the outside world. He felt like he was in a black and white painting.
After entering once, the rats never came back again.
In addition to the shadow world, he found that he could actually sense a certain spatial connection between shadows, and then he could connect the two shadows in space to form a kind of door.
Shadow Gate, this is the name given to this ability by Kaito.
At first, Kaito didn't care about Yingmen's ability. He thought he just had a skill that made it easier to travel, or a skill to save his life.
But then he thought that since his shadow rat was a pure shadow creature with no chakra in its body, it could freely enter and exit the barriers of various ninja villages.
And based on the Shadow Mouse, he can also open the Shadow Door.
So, in other words, he could use the Shadow Mouse to enter the places where the secret techniques were hidden in various ninja villages and directly steal the ninjutsu and secret technique scrolls inside.
This is much more efficient than using the Shadow Mouse to peek bit by bit. Not to mention that he can look more conveniently. After stealing the scrolls, he can ask other people to help him look through them, which can greatly increase his efficiency in finding specific functional ninjutsu and secret techniques.
The ninja world has been passed down for thousands of years, and various ninjutsu and secret techniques have emerged one after another.
His accumulation over the years, plus the various ninjutsu brought by the ninjas that Yugen Village absorbed back then, are just a drop in the bucket in this ninja world.
Do it when you think of it...
The Kaito directly attacked the big ninja village. After all, the powerful ninjutsu secrets were all in the big ninja village. If it attacked from the small ninja village, the big ninja village would sense something was wrong, and it might be difficult to steal.
After all, the Great Ninja Village has a wide variety of abilities, and there might be a barrier that can hinder his Shadow Mouse.
Konoha Village, Mist Village, Cloud Village, Iwagakure Village, and Sand Village.
The library of the five major ninja villages was robbed one after another, but because it was too embarrassing, the five major ninja villages did not choose to grow. Therefore, the subsequent small ninja village Kaito also stole very smoothly.
Tens of thousands or even hundreds of thousands of scrolls were stored in the dungeon. A large number of shadow rats and shadow guards gave up their other work and began to copy the scrolls for the Kaito while searching for what he needed in them.
For example, about poison, cells, medical treatment, resurrection, life, beauty, eye power and so on.
As expected, there is strength in numbers. In just one month, Shadow Guard helped Kaito find useful things from those scrolls.
One is the cloning technology that can copy the Sharingan, and the other is the technique that can convert Yin attribute chakra into eye power.
When cloning the Sharingan, Kaitoo and Tsunade do not need to be as careful with each Sharingan, and can conduct experiments more efficiently.
The eye power transformation technique makes it possible to evolve the Three-magatama Sharingan into the Mangekyō Sharingan.
The cloned Sharingan are all basic types, without even one magatama. They are awakened little by little through the infusion of pupil power until they have three magatama. This process only takes about a month.
Then comes the step of upgrading to the Mangekyō Sharingan.
In the laboratory, Kaito stood in front of the test bench, shadows squirming around him, and Sharingans appeared one by one.
Held up by the shadow, there were hundreds of three-magatama Sharingan, which looked extremely creepy and even a little disgusting.
Inside the Sharingan, the three magatama are connected by a black line. If you look closely, you can see that the black line is made up of connected characters, and this is the technique for transforming eye power.
For ordinary people, it is difficult to extract Yin attribute chakra alone.
However, Shadow Technique itself is the most perfect embodiment of Yin attribute chakra, and Shadow Realm is the best culture dish for Sharingan.
Put the Sharingan into the Shadow Realm, and then let the Shadow Rats protect it, so as to prevent these Sharingans from being assimilated into shadows by the Shadow Realm over time.
It is difficult for objects in the real world to exist for a long time in the shadow world, as the power of the shadow world will erode these objects.
If it is a dead object, it will turn into a shadow, and if it is a living thing, it will turn into a shadow creature, just like a shadow mouse.