Start with the Mangekyō and leave Konoha with Madara.

Fire Country, Cat House.

Shen Yu closed his eyes and took a deep breath of the air in the room. A mixture of mint and a faint fishy smell floated into his nostrils. He then opened his eyes, his eyes full of excitement.

"I'm finally back!"

"呲流~"

A large tongue covered with barbs suddenly licked the side of his face.

Shen Yu shuddered on the spot. Although his body responded to the stress and activated the water molecule barrier immediately, the feeling was still very disgusting.

He quickly turned his head and looked into Pochi's blue cat face.

"Hmm~ You seem different." Pochi spoke first.

Shen Yu looked disgusted, and the goose bumps on his body had not yet subsided. "It's indeed different, but I don't really like the way you confirm it."

Pochi pretended not to hear anything and sniffed around Shenyu. He stretched out his paw to touch the "Frost Heart" hanging on his waist, and the cat's face was full of interest.

"Where have you been?"

"Shouldn't I be the one asking this question?" Shen Yu thought of something. "A few days ago, Zesuke said that you didn't go back to the cat house. As I remember, you were fighting with Sarutobi Sasuke?"

Pochi yawned lazily, "This Ape Demon King is very interesting. I was amazed. I fought with him for a while before the spiritualism was over."

"Come to think of it, you're pretty peculiar, too."

Shen Yu held his chin up and said thoughtfully: "It can change its own shape at will. When it gathers, it takes shape, and when it disperses, it becomes gas. It can also evolve a barrier with itself and draw a line on the ground to make a prison..."

"Are you finally interested?" Pochi's head floated over, his bronze eyes lit up, "This is all a clever use of natural energy. For 10 billion taels, I will pass on the magic I practiced to you. How about it?"

"If you don't want to teach, just say it. Do you know what one billion means?" Shenyu slapped over, and Pochi's cat head immediately dissipated into mist and reunited on the other side.

"Besides, if you learn the magic from Myoboku Mountain, you will turn into a toad, if you learn the magic from Ryuchi Cave, you will turn into a snake, and if you learn yours... you will not grow cat hair..." Shen Yu waved his hand, "I always feel that the human body is the innate immortal body. There must be a magic that is more suitable for humans, and you... are all considered monsters."

"Meow~ Where did these words come from? They're quite new... Eh? What is this?"

The bright blue mist passed by Shenyu's pocket, wrapped in a glittering golden object, and floated in front of Pochi.

The blue mist condensed into a cat's paw, holding the "Helmsman's Order" on the pad.

Pochi opened his mouth and took a bite, his eyes immediately filled with surprise, "It's gold, pure gold!"

"Give it back to me." Shen Yu stretched out his hand, "This thing is of no use to you."

"No, this will be the cost of this trip."

Shen Yu had anticipated its temper, so he took out a bag from his waist bag and threw it over. There was a thick stack of banknotes in the bag.

"Here is one million taels."

Pochi took the purse with a smile, and no longer attached to the "helmsman's order", allowing Shenyu to take it back.

It licked its paw and said, "Speaking of which, after seeing the Ape Demon King, I suddenly had an idea. Could I also turn into a weapon and always be by his side?"

Shen Yu was slightly startled, "For example?"

“For example…” Pochi transformed his body into a blue mist of light that swirled around the divine feather. The dreamy colors made it seem as if he was in a sea of ​​stars.

As the light gathered, it eventually turned into a long, dark blue sword, hanging next to the "Heart of Frost".

Shen Yu marveled at the sound, gripped the knife handle, and flicked the blade lightly with his fingers. This was a normal operation, and the sharpness could be judged by the metal echo.

Clear and loud, like a dragon's roar.

"It can be big or small." A lazy voice came from the handle of the knife.

"Got it." Shen Yu suddenly looked bored and threw aside the gorgeous long sword that was full of brilliance.

"It must be too expensive. I can't afford it."

"The daily rent is three million taels. Consider it. I can even conjure up a cage to lock up the enemy and injure them..."

Shen Yu ignored it and pushed the door open.

The dazzling sunlight came into view, and the air with a faint scent of flowers and plants was refreshing. His eyes adjusted to the light in an instant. The distant mountains were towering, and endless green was in sight.

Maybe it was because he had been accustomed to the ice and snow in the past few days, and now bathed in the warm sunshine, he had the illusion that he was in another world.

The Cat House is still the same Cat House. It sounds like a house, but it is actually built on ruins. It is a city belonging to cats alone.

Among these cats there are ordinary cats as well as talking ninja cats. They are good at making ninja tools and with their shrewd minds, they have already established their own economic chain.

The specific situation can be described in four words:

Between abundance.

Here, you can see countless cats of all sizes jumping up and down in the streets, and only the Uchiha clan has the ability to enter the cat house.

"Well...it's time to go back to find Madara-sama. Guang has taken me back to the base a few times before...I remember it was...um..."

Shen Yu lowered his head in thought, his brows furrowed tighter and tighter.

"Am I so... directionally challenged?"

He finally realized something was wrong.

Although he could not tell the directions originally, his memory of the roads he had traveled was not vague. The dynamic vision from Uchiha and the memory brought by the super high soul strength allowed him to remember every road he had traveled.

It’s okay in the Iron Kingdom. After all, it’s the first time and it’s normal to not know the way.

But now...

He has walked this road from the Cat House to the Kannobi Bridge many times, there is no reason why he couldn't remember it!

Humans' sense of direction is innate. Unlike animals, humans do not have organs specifically designed to sense the Earth's magnetic field.

In other words, humans' magnetic sense is too weak, because the five senses and vision that humans possess are sufficient to ensure survival, and the magnetic sense is redundant. Over a long period of time, humans' redundant magnetic sense will degenerate or even disappear.

For this reason, people rely more on visual memory to locate themselves in space.

If you want to go somewhere, your brain will often imagine the general appearance of the destination first, and then the surrounding environment. Then, according to your previous memory and your current location, you will follow the map and conceive a general route step by step.

But now Shenyu's memory of the route has split!

His intuition told him that the south was the straight line to his destination, but suddenly he felt that east, west and north were the correct directions.

Each fragmented memory fits the location in my mind. This feeling of being close yet distant makes it seem as if no matter which direction I go, it’s wrong.

"Moxuluo!"

When he was in doubt, he decisively opened his Mangekyō Sharingan, and "Makyō" slowly started to rotate in a red light.

With the blessing of infinite adaptability, he looked inside his body inch by inch, while constantly recalling the route in his memory.

"Something's wrong! There's something wrong with my body."

"Under the interference of some force, the route memory that once existed in my mind has become confused."

Could this be...magnetic induction?

Could it be that through some adaptation, my brain has evolved the ability to sense magnetic fields?

He looked up suddenly and grasped the key point of the problem.

"Yes...Flying Thunder God Technique!" He clenched his fists silently.

The essence of the Flying Thunder God Technique, after all, is to use chakra marks to jump through space, which is an undisputed space-time ninjutsu.

In space, there exists a uniformly distributed physical field, which is a vector field composed of countless tiny particles in motion and transmits magnetic forces between objects. This is the magnetic field.

It refers to the existence in the universe and is an important environmental factor in space. It can be the magnetic field generated in space by the electric current inside the universe and celestial bodies, or it can be the magnetic field generated by the electric current system in space.

The disturbance and change of the magnetic field in space affect the distribution and change of charged particles in space. That is to say, if there are fluctuations in space, the magnetic field will change.

Shen Yu frowned. The reason why he was in such a terrible state in the previous battle with Tobirama was because he had put all the power of "Magic Hollow" into adapting to the "Flying Thunder God Technique", but the power of space was so vast that he was unable to adapt until he was transferred to the deep sea by Tobirama.

After that, he even wanted to use "Moxu Luo" to adapt to his own "Tian Zhi Chang Li", but unfortunately, activating the power of origin at the same time was tantamount to a contradiction.

Moreover, the essence of "the constant standing of the sky" is to change the spatial state from the temporal state, which will not cause spatial fluctuations. Therefore, the adaptation to space has been in a stagnant state.

This also made him understand that it would be difficult for the current "Magic Luo" to adapt to the nature of all things in the world through ninjutsu. Even if he could do it, it would take an immeasurable amount of time.

However, the solution given by "Moxu Luo" to deal with the "Flying Thunder God Technique" is to evolve the ability to sense magnetic fields and promptly detect subtle changes in space. This way, it can react at the moment of space fluctuations and directly predict the target's spatial landing point!

But... due to incomplete evolution, he did not successfully adapt to Flying Thunder God. Therefore, the incompletely evolved magnetic sense could not be synchronized with the original visual memory, so they interfered with each other!

"If I can't fully adapt to Flying Thunder God, my original sense of direction and my new magnetic induction will always interfere with each other, causing me to become a directionally challenged person!"

No wonder... why am I wandering around in circles in the Iron Kingdom...

If the adaptation of "Moxu Luo" is not complete, it may cause me to have some strange problems. This... I have to pay attention to it in the future.

He took a long breath and looked towards the horizon.

Senju Tobirama... I will come to find you.