Eight Trigrams Sealing

Setting aside the unreliable novel manuscript, Qiuyang actually managed to glean some clues on how to enhance his chakra reserves from the second chapter.

That was to use the unique sealing jutsu of the Uzumaki clan—the very technique used to seal the Nine-Tails—to create a space that functions like a chakra power bank.

A typical ninja's chakra is stored near the dantian, and how much one can hold depends entirely on their innate constitution and how they refine it later in life.

However, the influence of later training is relatively negligible.

Kakashi, known as the "Copy Ninja," still couldn't solve the century-old problem of running out of chakra even by the end of the series.

This is sufficient proof of the importance of innate capacity.

After understanding the basic structure of this chakra storage, a ninja looking to expand their reserves would generally have to focus on training the resilience of that storage area.

Ensuring the dantian doesn't rupture, they would attempt to store slightly more chakra each time, letting the body gradually grow accustomed to it and slowly increasing the amount it can withstand.

But from what his teacher had written, Qiuyang discovered another viable solution—

That is, using the Uzumaki clan's Eight Trigrams Sealing to temporarily create another micro-space within the body specifically for storing chakra.

The principle is similar to Tsunade's Creation Rebirth on her forehead:

First, open up a massive chakra reservoir, then guide the body's original small chakra pool to inject a little bit into the large reservoir every day.

Accumulating bit by bit, when faced with a battle, one can directly unleash a crushing amount of chakra.

Qiuyang didn't count on finding the "Legendary Sucker" to teach him this method, but when he saw the term "release the Eight Trigrams Sealing" mentioned in the scroll, his eyes lit up.

Because this meant his teacher knew this sealing jutsu.

With such a safe and quick method available, why would he bother struggling to find other ways to increase his chakra?

So, he closed the scroll and, for the first time in three days, ran to the "Happy Home," dragging Jiraiya—who was currently leering and holding a slender young lady in each arm—into a separate empty room.

"Oh ho, it's Qiuyang. I'm not leaving until tomorrow, you don't need to be in such a rush to see me off."

Qiuyang helplessly steadied his unreliable teacher:

"Jiraiya-sensei, I need you to help me set up an Eight Trigrams Sealing that can transmit and store my own chakra to alleviate my chakra deficiency."

"Eight Trigrams Sealing? No, no, that thing takes half a month just to write the seal formula. I'm not doing it, hic—"

As he spoke, Jiraiya turned to head back to his den of pleasure, only to be stopped by an urgent Qiuyang:

"It doesn't have to be the complete version, just a simple one that lasts for half a year will do."

This timeframe was perfectly fine.

Because once Snake Auntie implements the Konoha Crush Plan, he would have to seek her help to obtain Hashirama Cells compatible with his own.

Whether it's to increase chakra production speed and storage capacity, or for his later evolution toward the Otsutsuki, he must fuse with the First Hokage's cells.

To survive in front of a bunch of overpowered monsters like Naruto, Kaguya, Isshiki, and Momoshiki, Qiuyang had no other choice.

Therefore, he had to take the risk of meeting the scientist Snake Auntie; it was unavoidable.

He possessed all the clues from the original Naruto story and understood what Snake Auntie wanted, so he wasn't worried about being refused.

He was only using the Eight Trigrams Sealing as a stopgap measure because he had no other options; he estimated that with this chakra power bank, reaching the Jonin level would be entirely possible.

"Even if it's a simplified one, I don't recommend you..."

Jiraiya was still trying to persuade his student not to mess with these unorthodox methods when the door was pushed open a crack by one of the young ladies he had been holding:

"Mister, why haven't you come back yet? We're still waiting for you!"

That pitiful expression and the inexplicable beauty of her jade-like feet stepping on the floor caused Jiraiya to lose a bit more of his reason.

Hurriedly promising to return immediately, he raised his hand, and a scroll appeared in his palm.

The hardest thing to resist is the kindness of a beauty; he chuckled, thinking that what his disciple asked for wasn't a big deal anyway, so letting him experience it was fine.

"As it happens, I wrote a simplified version before, but this thing can only be used for eight months before it automatically dissipates."

Jiraiya then opened the scroll on the floor, performed a series of complex hand seals, and slapped his palm onto the scroll.

Facing outward, the scroll began to sprout dense, black cursed lines.

Without needing Jiraiya to give instructions, Qiuyang took off his shoes and stepped into the center of the circle.

"Sealing Jutsu: Eight Trigrams Sealing."

The black cursed lines on the ground seemed to come alive, crawling like insects toward Qiuyang's feet, burrowing into his body, and finally converging in a spiral pattern on his stomach.

"Ah... ugh..."

A piercing pain followed, and Qiuyang couldn't help but let out a scream at the final moment of the seal's formation.

He gritted his teeth and lifted his shirt to see the ink-black runes gradually fade until they disappeared, while simultaneously feeling a strange, new space within his body.

With a shift of his spirit, his consciousness immediately transferred into the mental space within his body; this was another function of the Eight Trigrams Sealing:

It allowed his consciousness to enter the mental space.

He discovered a black sphere the size of a water tower in this space, which must be the storage area for his chakra, though he hadn't channeled any into it yet.

Qiuyang reached out toward the sphere and saw a stream of black-and-white energy flow from his fingertips, disappearing the moment it touched the sphere.

Importing and storage were working perfectly.

Qiuyang cut off the energy flow and began to reverse the process, causing the energy that had just been sucked into the sphere to be drawn out and drill back into his body.

The extraction worked without a hitch.

It really was just like a power bank.

Qiuyang felt a surge of joy and hurriedly exited his mental world, happily reporting the experimental results to his teacher.

Jiraiya curled his lip and pushed open the Space Gate, still not entirely approving of this shortcut, and didn't forget to admonish his student before leaving:

"I only wanted to give you a taste of it, but you mustn't rely on this kind of thing in the future; true strength comes from within."

"Yes, Teacher."

In the future? Once he had Hashirama Cells, who would still be using this kind of thing?

But Qiuyang did not know at this moment that later on, he would indeed continue to use the Eight Trigrams Sealing to contain parts of the various Tailed Beasts, fusing their chakra to form a unique chakra mode.

The greatest benefit this time was that it made him seriously re-evaluate the formidable sealing techniques of the Uzumaki clan.

Today was the final day of the stay Jiraiya had mentioned, and he went directly to the place where Qiuyang was training to inform his student.

Qiuyang found that he was feeling a bit reluctant to part ways:

"Teacher, are you really leaving?"

Although this convenient teacher was unreliable, he was, after all, the first person he had interacted with deeply since arriving in this world.

Jiraiya noticed his student's sadness and laughed as he patted him on the shoulder to comfort him:

"What do you mean 'leaving'? Your master has missions to complete."

Qiuyang actually knew that during this period, Jiraiya was tracking the movements of the Akatsuki organization and would soon return to mentor Naruto, so he indeed had missions.

"If anything comes up, just let me know through the toad, and then..."

Jiraiya pulled out a scroll labeled "Mission" and handed it to Qiuyang, continuing:

"This is a mission I haven't finished yet; help me complete it before you return to the village. Don't tell me you can't do it."

Perhaps sensing the sorrow of parting, Jiraiya vanished into a puff of smoke as soon as he finished his instructions.

Qiuyang opened the mission and smiled; Teacher Jiraiya must have seen through his financial distress long ago!

'Eliminate the bandits organized by the rogue ninja from the Land of Water at Maple Mountain.'

Over 50 bandits, with a rogue ninja at the Jonin level.

This was going to be a bit tricky!