Naruto: Starting from the time when the Six Paths of Pain was Kira Yoshikage

Rain Village, a most secretive base somewhere.

This is the original location where Akatsuki was founded, a place known only to the three founding members of the organization: Yahiko, Konan, and Nagato.

"Nagato..."

Hearing the agonizing howls from inside the door, like those of a wild beast, Xiao Nan stood in front of the door softly murmuring her best friend's name, her amber eyes filled with worry.

She desperately wanted to open the door and rush in to be with that best and last companion, but Nagato had warned her before closing the folding door that she should never disturb him until he came out on his own.

Some things can only be faced by oneself.

Xiao Nan couldn't help but recall the brutal battle she had experienced not long ago; even now, she still felt lingering fear and sometimes couldn't stop trembling uncontrollably...

Yahiko died, Nagato's legs were blown off, and countless like-minded comrades fell one after another. If it weren't for the final burst of power from those Sage's Eyes, perhaps even they would have perished...

She witnessed Nagato exuding a solemn aura and using unimaginably powerful strength to kill countless Rain Ninja like weeds. Even Hanzo, who was known as a demigod in the ninja world, chose to flee.

However, such techniques come at a price...

Konan saw it all and felt heartbroken, but there was nothing she could do. After all, she was just a teenage girl at the time... Not long ago, she was very cheerful and lively, not the aloof and indifferent older sister figure in Shippuden who, after experiencing countless events, became indifferent to everything except Nagato.

For the first time, she felt such intense hatred for her own incompetence...

Nagato locked himself inside the door for five days without eating or drinking, and Konan stood outside the door to keep him company for five days without eating or drinking.

That's all she could do and all she could think of.

If it weren't for the miraculous chakra within them, the two of them might have collapsed long ago.

Only when you lose something do you realize its value. Konan now has nothing left but Nagato, and for her, Nagato is everything.

But she was unaware of an even crueler truth...

The Nagato inside the room was no longer the Nagato she remembered.

Having witnessed his best friend's tragic death and been betrayed by the person he admired, Nagato, deeply traumatized, summoned the Gedo Mazo. In doing so, he not only expended a massive amount of chakra, but also had his original soul extracted from it.

Now, Nagato's body is inhabited by the soul of another person, which originally resided deep within Nagato's body and awakened with the departure of Nagato's true soul.

The reason he locked himself in his room for five days was simply to process the memories that originally belonged to Nagato.

Now, it has been almost completely digested.

Nagato slowly opened his eyes in the room, surveying his surroundings with his six-ringed purple Rinnegan.

"His eyesight has improved; to be precise, it's exceptionally good. Even the finest speck of dust can't escape his notice."

He slowly raised his slightly withered hands, and even though he was much thinner than before, they were still full of explosive power.

He could feel an unknown, active energy surging through his body.

Chakra, also known as the source of life, is something unique to this world.

It is the possession of this magical substance called chakra that gives ninjas power far exceeding that of ordinary people.

Through Nagato's memories, he learned that he had come to the world of Naruto.

Fortunately, he became the big boss in the later part of the story, the apparent leader of the Akatsuki organization—Nagato.

It possesses extremely high combat power.

Unfortunately, the timing was wrong. When he awoke, Nagato's legs had just been crippled. Even more unfortunately, he became like this because he was the bottom layer of the nested bosses in Naruto (Nagato - Obito - Madara - Black Zetsu - Kaguya).

Even his most prized Sage's Eye is actually the eye of Uchiha Madara, the third to last character in the matryoshka doll series. His entire life was manipulated by the group of outsiders behind him.

"Move! Your legs, I command you to move!"

No matter how Nagato called out, his legs did not respond at all; he could not even feel anything in his lower body.

Despite having tried countless times, Nagato's expression remained extremely unpleasant.

During these five days, besides processing Nagato's memories, he tried to regain feeling in his legs.

The result was obvious: all attempts ended in failure.

When he was watching Naruto, he thought it was absurd that Nagato was disabled in both legs.

Chakra is a magical thing, and the Rinnegan is the most magical thing in the Naruto world. When combined, they can even summon the deceased and revive people who have been dead for many years.

However, even this miraculous product couldn't cure his legs...

To understand this simply, you need to explain how advanced the surgical technology is in the Naruto world. High-difficulty eye transplants are as easy as plugging and unplugging a USB drive in this world. Even a thirteen-year-old child can perform them independently. Severing limbs or even shattering all the bones in the body are considered minor surgeries.

Against this backdrop, a broken leg cannot be cured?!

The big joke of slipping the world!

However, Nagato probably knew why his legs couldn't heal on their own.

Nagato's gaze unconsciously drifted to the black rods stuck in his back.

These black rods were byproducts of the Gedo Mazo that Nagato summoned when he unleashed his power. Through the powerful perception of the Rinnegan, Nagato could clearly see that something was constantly absorbing his chakra through these black rods.

Gedo Mazo... or rather, the shell of the Ten-Tails.

Although Nagato is suspected of having the bloodline of the Uzumaki clan and possesses an extremely large amount of chakra by nature, even a god would not be able to withstand being constantly drained by this thing.

Moreover, it wasn't just the black rods behind him; these Rinnegan eyes, which didn't belong to Nagato, were also constantly absorbing his chakra.

Nagato is part of Madara Uchiha's nested doll. He was chosen because of his Uzumaki clan identity and the vast amount of chakra within him that could be used to nurture the Rinnegan.

Chakra is the source of life. If the source of life is constantly being drained, it's no wonder that the legs can't get better.

Especially considering that this monster with those eyes is kept alive by Nagato's chakra, it wouldn't be an exaggeration to call Nagato a super healer.

This is also why Nagato's health deteriorated, and by the time he appeared in the story, he was so thin that he was just skin and bones.

Just like that Konoha genius Kakashi, who was almost drained dry after only having one Sharingan. He not only covered his eyes with his headband, but also looked like he was short of 'blue energy' and had kidney deficiency. He could only fight for a short while before he had to lie down and rest for a few days.

Although many people use this to make fun of it, Kakashi actually has a lot of chakra in his body, as can be seen from his performance after losing his Sharingan.

He easily defeated a group of ordinary ninjas.

To restore your legs, removing these black rods is key...

But now is not the time.

The nesting doll behind him (Obito) and the nesting doll behind that (Black Zetsu) are probably watching from nearby.

Both the Gedo Mazo and the Rinnegan are very important to these two guys.