Spirit Refining and Returning to Emptiness

Half a year later, the five organs and five elements within Tsunade's body circulated in harmony, and her cultivation had reached minor accomplishment.

Doichi Hyuga taught her the full-body Great Five Elements Technique for a week, but in the end, he could only helplessly set it aside for the time being.

Fortunately, Tsunade understood the human body well enough. She could only work hard on studying the theoretical knowledge first; once she passed the theory, she could slowly grind away at it over time.

As long as she was given enough time, she would surely be able to do it. But if she wanted her strength to rise rapidly in the short term, she might as well wash up and sleep! Everything was possible in dreams!

But that meant the pressure had fallen onto Doichi Hyuga.

The future was far too dangerous. His current strength could not guarantee absolute safety.

Konoha!

Death Forest Laboratory.

Doichi Hyuga lay on an operating table while his Shadow Clone Technique clones busied themselves nonstop around him.

"Original body! Everything is ready. Shall we begin?!"

A shadow clone said.

"Begin!"

Doichi Hyuga nodded.

A needle pierced the veins on the back of his hand, and Otsutsuki Toneri's cellular extract slowly entered his bloodstream.

As time passed, waves of numbness, itching, and pain struck his body in succession.

A shadow clone took out a syringe and injected him with an anti-rejection agent.

Doichi Hyuga's expression remained indifferent. This little pain was nothing to him.

He activated his Byakugan, using its ocular power together with the spiritual energy in his body to suppress Toneri's cells.

He forcibly fused Toneri's cellular extract into his own cells, trapping it firmly within their nuclei. Then, he slowly devoured and digested it, strengthening his own physique.

After Toneri's cellular extract had been stripped of its personal will, its purity reached ninety-seven percent.

This was the ultimate result of countless experiments. Its purity had already reached the limit.

Four hours later, Doichi Hyuga calmly stepped down from the operating table.

The cellular matter within his body became extraordinarily active, and the genetic chains within his chromosomes began undergoing unknown changes.

He closed his eyes and rested for two hours.

As the agitation of his cells gradually subsided, his eyes suddenly throbbed.

Doichi Hyuga understood. The fetal movement had begun!

After putting on his eye covering, Doichi Hyuga began meditating and cultivating.

As he began the Six-Syllable Breathing Method, both the amount of spiritual energy from heaven and earth he drew in per breath and his absorption speed increased severalfold.

When he stopped using the breathing method and relied solely on spiritual energy to mobilize the spiritual energy of heaven and earth outside his body, his absorption speed decreased by less than ten percent.

A Sage Body truly made cultivating Natural Energy twice as effective with half the effort. It was far easier than before.

Driven by his Sage Body, Doichi Hyuga swiftly entered the Spirit Refining and Returning to Emptiness Realm. He had been stuck at the Qi Refining and Transforming into Spirit Realm for more than a year. Now, he could finally breathe a sigh of relief.

Essence Refining and Transforming into Qi, Qi Refining and Transforming into Spirit, Spirit Refining and Returning to Emptiness, Emptiness Refining and Uniting with the Dao!

Spirit Refining and Returning to Emptiness meant refining the Primordial Spirit.

The first fetal movement ended nine days later.

The second lasted eighteen days.

The third did not end until twenty-seven days had passed.

It seemed to have taken even longer than Otsutsuki Toneri's three fetal movements!

Doichi Hyuga sighed inwardly as he removed his eye covering.

A pair of beautiful eyes appeared in the mirror.

Their irises were sky blue, and their pupils were sky blue as well. Three golden six-petaled snowflake patterns of varying sizes overlapped each other, slowly rotating around the pupils.

"Eh! Something's not quite right!"

"What is it, original body? What's wrong?"

A shadow clone asked.

"I remember that Otsutsuki Toneri's Tenseigan had two snowflake patterns in its irises, and they should have been white."

"Perhaps it has something to do with the Byakugan ocular power the original body absorbed from the Giant Tenseigan! The snowflake pattern within the moon's Giant Tenseigan is golden! Could it also be related to the original body's exceptionally high-quality spiritual energy?"

The shadow clone guessed.

"Perhaps! Though I fused with Otsutsuki Toneri's physique, it feels more like devouring and digesting it. After the fusion, my physique is clearly much stronger than Toneri's original cells!"

Doichi Hyuga withdrew his shadow clones. With a thought, his Tenseigan reverted to the Byakugan. His Byakugan was crystal-clear, becoming even purer and brighter.

What he saw was no longer a black-and-white world, but one filled with color.

Otsutsuki Toneri could not deactivate his Tenseigan because the eyes were not originally his. It was the same principle as Uchiha Madara's Rinnegan; Nagato likewise could not deactivate the Rinnegan.

After familiarizing himself with the Tenseigan's abilities, Doichi Hyuga left the laboratory.

"Where have you been these past few days? Qianyue has been looking for you every day!"

Tsunade crossed her arms and glared at Doichi Hyuga with a resentful expression.

"I had matters to deal with. It couldn't be helped!"

"Your eyes seem different from before?"

Tsunade stared at his eyes. They looked even more crystalline and translucent than before.

"Yeah! I made some progress in my cultivation. It may have affected my eyes!"

After all, teachings were not passed to a third pair of ears. It was better not to casually reveal certain things. Some scheming bastards truly did not act like human beings; no amount of caution was excessive.

"Daddy! Daddy! You're finally back!"

Upon hearing Doichi Hyuga's voice, Qianyue came running out. She jumped into his arms and planted several loud kisses on him.

"Haha! Has Qianyue been a good girl?"

Doichi Hyuga gave the little girl a big kiss on the cheek and laughed happily.

"Mhm, mhm, mhm!"

Qianyue wrapped her arms around Doichi Hyuga's neck and nodded repeatedly.

"How has your studying been lately?"

Doichi Hyuga turned to Tsunade.

"Not bad! I've gained a preliminary understanding of the fundamental composition of the world. It's just that some of the terminology is too obscure, making the meanings difficult to understand!"

Ever since Tsunade began studying the knowledge recorded on the Dao Scripture scroll, she had felt as though she had grown a brain.

"It can't be helped. If it were written too plainly, one scroll would never be enough. Even ten million words wouldn't suffice to explain it all clearly in straightforward language. If there's anything you don't understand, I'll give you private lessons tonight!"

If the Dao Scripture were written too plainly, the scheming natives of this world might easily steal and learn it.

At the word "tonight," Tsunade's face reddened. She shot him a fierce glare.

The moment Tsunade made that little expression, she became incomparably alluring, brightening the whole room. Doichi Hyuga could barely withstand it and wanted to begin their lessons immediately.

Heh! This wicked woman is disrupting my Dao heart. She's truly damn... enchanting!

After dinner, Teacher Dao Yi began tutoring Tsunade.

An hour later, the two moved to the bedroom to continue their tutoring.

Shizune hurriedly picked up Qianyue and coaxed her to sleep.

Doichi Hyuga won three battles in three victories, utterly routing Tsunade until she surrendered with both hands raised.

Perhaps because they had not seen each other for so long, Tsunade's fighting spirit was high that night. One new tactic she had always shyly refused was successfully unlocked, and she even learned new knowledge from Teacher Dao Yi.

Tsunade could personally feel that Teacher Dao Yi had grown stronger again.

"I can't do this anymore! Stop fighting! I want to sleep!"

Just as Doichi Hyuga was about to begin another round of conquest, Tsunade sternly refused him.

Always passing out from exhaustion made Tsunade feel ashamed, humiliated, and defeated.

"More exercise helps improve sleep quality!"

Teacher Dao Yi spoke with righteous conviction, then sent out forces on both flanks and began seizing territory again.

"Stop! Stop! Can't we talk for a while? Let me rest first!"

Tsunade's eyes were misty, her voice weak, with a trace of pleading in it.