Return to the Hidden Leaf Camp

For the remaining time, Indra continued cultivating the "Qi Transformation and Reconstruction" of Reverse Birth Triple Layer while studying the abilities of the Six Treasury Immortal Thieves and Feng Baobao.

After repeated trials, Indra left behind a "Qi-Devouring Secret Art" before his departure.

He had combined the principle behind Reverse Birth Triple Layer's ability to transform other living beings into qi with the methods of the Six Treasury Immortal Thieves.

The fundamental reason people in the Under One Person World died was that their innate qi had been continuously consumed from the moment of their birth, with no way to replenish it.

The Six Treasury Immortal Thieves, however, could devour the qi of all things, allowing one's innate qi to flow without end and thus achieve immortality.

The "Qi-Devouring Secret Art" transformed animal flesh and blood into qi, then absorbed it through qi-refining methods to replenish one's insufficient innate qi.

As Indra was about to leave, he shut the door and gave Feng Baobao another harsh lesson, leaving her limp and powerless, without even the strength to resist.

Ever since Indra had mastered the Six Treasury Immortal Thieves as well, allowing him to lock away his vital essence and true qi so Feng Baobao could not refine and absorb them, she had lost her endless supply of energy, and her combat strength began to plummet.

"Ah~ Boss, working this hard means you're leaving, huh?"

Feng Baobao lay sprawled across Indra's chest and lifted her delicate, stunningly beautiful face.

The flush on her cheeks and the mature air between her brows caused her charm to rise dramatically.

Her only flaw was her eyes. They still lacked even a trace of seductive allure and remained as blank as ever.

He pinched Feng Baobao's soft, fair cheek and nodded. "I'll be back. Don't miss me too much~"

"Okay, I won't miss you."

Feng Baobao tilted her head, answering with complete seriousness.

Then she extended a finger and poked Indra's cheek, just as she had when they first met.

Indra rolled his eyes at Feng Baobao helplessly and let her poke him.

A moment later, Indra gathered his things and vanished from the spot in an instant.

Watching Indra disappear, Feng Baobao sat there blankly for a long time, blinking her eyes. Breathing in the faint scent of privet flowers lingering in the air, she leaned against the blanket they had shared and fell into a deep sleep.

After returning to the space of the myriad worlds, Indra took stock of what he had gained from this trip.

Other than the Black Snake Armor, he had brought everything else back.

Indra had already reverse-engineered its method of manufacture through qi. Since its strength was not particularly high, he left the Black Snake Armor for Feng Baobao.

"The greatest gain was still Reverse Birth Triple Layer, along with these two Eight Extraordinary Skills."

Patting the stack of ninjutsu talismans in his ninja tool pouch, Indra returned to the Hidden Leaf frontline camp.

"Hiss... haa..." Indra took a deep breath and immediately sensed the difference between the two worlds.

"A unique kind of energy fills the air here. Is this natural energy?"

In terms of quality alone, natural energy was dozens of times stronger than the qi of the Under One Person World.

After practicing the Six Treasury Immortal Thieves, he no longer needed to eat to fill his stomach. The key lay in drawing nutrients in through breathing.

After absorbing natural energy, his physical condition even began to improve slightly.

The increase was small, though. Only after years of accumulation would it become clearly noticeable.

"And I'm even hungrier..."

Indra swept his gaze across the area, and the dense clusters of chakra made his mouth water.

Gulp!

After swallowing, Indra immediately activated Reverse Birth Triple Layer and transformed his six viscera into qi.

The terrifying hunger abruptly vanished, making him let out a long sigh of relief.

"The side effects of the Six Treasury Immortal Thieves are far more obvious than those of the Heavenly Register.

"One must endure the torment of hunger at every moment. Seeing something delicious only intensifies it further, and it can even make one lose their mind."

If he had not mastered a way to restrain it, Indra felt that before long, he would have to retreat somewhere deep in the wilderness, far from anyone else, just to barely keep himself under control.

Drawing back his gaze, Indra began refining chakra while maintaining his Reverse Birth state.

He used cultivation in place of sleep, and when dawn came, he opened his eyes.

"I finally understand how hard it was for Master to maintain the Reverse Birth state."

Maintaining it while constantly dividing his attention was equivalent to having to multitask throughout daily life. Like a taut string, if kept stretched for too long, it could easily snap.

Still, he was fine for now. Unlike Zuo Ruotong, he had not maintained it unchanged for decades.

At present, it was even beneficial to Indra, tempering his soul and making his thoughts more agile.

Indra clenched his fists and rose to his feet, feeling the surging chakra within his body.

"After obtaining the Six Treasury Immortal Thieves, my chakra capacity limit has increased considerably. Now, after fully refining it, my chakra reserves have reached jonin level.

"The terrifying digestive power granted by the Six Treasury Immortal Thieves also lets me absorb natural energy from the air.

"Although I can't synthesize senjutsu chakra, it can be used to restore chakra."

Combined with his two months of cultivation in the Under One Person World, even without borrowing the power of the Twelve Talismans, his true combat strength was already comparable to that of an elite jonin.

"Once I outlast Madara in the shadows, my era will truly begin!"

Indra grinned, suppressing his exhilaration.

He knew full well that the old bastard Madara was still lurking in the shadows, specifically watching the Uchiha Clan's selection of an heir. He could not truly start doing whatever he pleased just yet.

Indra stepped out of the tent and saw Uchiha Mikoto looking utterly exhausted.

"Haah... Good morning, Indra."

"A new day, new work. I think we still have plenty to do, Mikoto."

Indra pointed at the Hidden Leaf ninjas returning in ones and twos nearby. All of them bore injuries to varying degrees, and some were even carrying severely wounded comrades.

Mikoto could only swallow a soldier pill and force herself to rally.

As she walked beside him, Indra unconsciously activated the Six Treasury Immortal Thieves. Traces of vitality mixed with natural energy flowed into Mikoto's body at his side.

She suddenly realized that her chakra was recovering rapidly.

"This soldier pill is incredibly effective today!"

"Haha, I thought so too."

Indra replied with a smile, then entered the first-aid station to continue working.

Looking at the newly arrived wounded, Indra seemed to see one experimental tool after another.

His Reverse Birth Triple Layer's "Qi Transformation and Reconstruction" was exploring ways to heal other people's injuries.

Stopping before an unconscious patient, Indra immediately pressed both hands against him.

"Reverse Birth Triple Layer: Qi Transformation and Reconstruction!"

An enormous amount of chakra poured into the patient's body, precisely locking onto his broken right leg and damaged internal organs.

"Wrap up the injuries, transform them into qi, then reconstruct them to how they were before the injury... Failed."

Pfft!

Watching the patient cough up blood and hang on by a thread, Indra took out the Horse Talisman and lightly pressed it against him.

Afterward, he put on an act by making a few wounds, set the patient aside, and turned to practice on the next one.

As he continued treating patients, Indra learned the good news that the Hidden Leaf's front line had achieved astonishing results.

The surprise attack launched last night had caught the Hidden Sand Village ninjas off guard, reclaiming more than half of the lost territory along the front. The entire camp was now immersed in celebration.