Escaping the Mist Ninja starts with backstabbing your teacher.

"No wonder you dared to hold back like that." Tsunade's face showed a hint of bitterness.

Recalling the previous battle, he realized that his opponent had been holding back and not going all out, stalling for time to observe him.

It turns out that the other party was not afraid at all, and Konoha had no spare capacity to deal with them, so they were not worried about the huge commotion they caused in Tanabata Street.

Shizune remained silent. Although Konoha was in a bad situation, they were now struggling to protect themselves. The village's presence was a huge deterrent.

Izumi glanced at the two of them but said nothing. He simply told Yekura, "Arrange rooms for them separately. Nothing special is needed; normal rooms will suffice."

"Now, they are my experimental subjects, guests who need to be carefully observed."

He directly separated the two. Without Tsunade as her pillar of support, Shizune, even though she had been strengthened by him, was of little use.

As for Tsunade, she would be hesitant to act until she could find Shizune, and she was also aware of his methods, so she would only make a move when she had an opportunity.

"Okay, leave it to me." Yecang looked at the two of them, his gaze lingering on Tsunade's chest for a brief second.

Sure enough, even as a woman, Ye Cang couldn't help but care about this aspect.

Meanwhile, Momona was muttering in her ear, quite indignant, saying that she was still young and could grow up a bit more.

As if unwittingly reminding Yekura of her age, Momona angrily smacked her on the head and stared blankly at Yekura's departing figure.

"Huh? Why did you hit me?" Momona looked confused, completely bewildered.

She had no idea when she had offended Sister Ye Cang, since she had just returned.

At this moment, Izumi waved to Momona and said, "Come with me, Momona, it's your turn for the experiment."

Momona was startled and pointed blankly at herself, "Huh! Me?"

"right!"

Izumi nodded, which immediately made her eyes widen. She pressed her large hand to her head, revealing a complex expression like a palette of colors.

This left Izumi speechless. He then conjured a crimson chakra arm, wrapped it around Momona, and grabbed her.

"What are you mumbling about? Let me strengthen you and also study your bloodline limit."

"oh!"

With those words, Momona breathed a sigh of relief, and her legs, which had been straightened, quickly returned to normal as she caught up.

……

When Izumi returned to the lab, it was filled with various skeletal models, resembling a large-scale figurine collection.

There were also some scattered bones on the table, all of which were modified from various ninja beast skeletons.

Now that we have his [Yin Seal], we can try to create, absorb, store, and call upon these functions to create puppets.

"Come on, lie down here!" Izumi pointed to a platform desktop entirely constructed of skeletons.

Momona gave an "oh" sound, feeling a little uneasy, but she didn't dare to ask and could only lie down on top.

As Izumi formed hand seals and pressed them onto the skeletal platform, the enamel-covered platform instantly adjusted its shape to fit Momona's body.

Lying there, her body slightly tense, Momona said with tears welling in her eyes, "Lord Izumikawa, you will pity me, won't you?"

Izumikawa: "???"

This whole thing left him speechless. When did he turn this girl into such a drama queen?

He said, rather exasperated, "What on earth have you been imagining?"

Momona pouted and said aggrievedly, "I secretly saw you doing the experiment on that flat-chested girl."

"The other person looked to be in great pain and discomfort, covered in sweat, and with a pained expression. Even after you untied them, they collapsed."

"So I hope you will be more loving towards me, I feel I can't handle it."

Izumikawa: "..."

He only did that to intimidate Tsunade, so how could the misunderstanding be that deep?

Too lazy to waste words, he took direct action, striking Momona's pressure point and injecting chakra, quickly knocking her unconscious.

Then, crimson chakra rose from his body, forming a thousand-armed phantom behind him. The chakra arms transformed into crimson needles, striking Momona directly.

Chakra needles pierced into various acupoints, his right eye veins bulged, his Byakugan activated, and his palm pressed against Momona's lower abdomen.

【optimization】!

Chakra immediately invaded her, and red lines spread from Momona's lower abdomen, reaching all over her body.

Based on his own cultivation method, he optimized it by combining it with the Yin Seal, and then moved the core of the Yin Seal to this location.

The Yin Seal is like a stagnant pool of water, where chakra can only flow in but cannot flow out normally; to let it flow out, the seal must be broken, allowing all the chakra to pour out directly.

Therefore, if it is to become a true method of cultivation, it is necessary to convert the chakra that ninjas constantly generate and dissipate into one's own power, and to be able to use it anytime and anywhere.

One must revitalize a stagnant pool and make it flow; this is how one can cultivate oneself.

Secondly, the Yin Seal is very difficult to perform. Without precise chakra control, even ordinary medical ninjas cannot do it.

That's the case with Shizune; medical ninjas are inherently at a level where their chakra control is stronger than that of ordinary ninjas.

Even so, Shizune was unable to master the [Yin Seal], and Tsunade was helpless against it; this is a matter of personal talent.

To complete the construction of the [Yin Seal], one needs to become a top-tier medical ninja, possessing sufficient chakra control.

Yin and Yang, spiritual energy and physical energy, one positive and one negative, the place where the two meet is the best point to store chakra.

Therefore, the best location to choose is along the midline of the body, followed by the place where spiritual energy or physical energy is generated.

The space between the eyebrows is where spiritual energy is generated, while the lower abdomen is where physical energy is generated, so he abandoned the space between the eyebrows and chose this place instead.

If something goes wrong here, he can still salvage the situation; but if something goes wrong between his eyebrows, then there will be no cure.

The chakra needles that had been placed earlier blocked the flow of Momona's own chakra, thus contributing to the flow of his chakra within the other person's body.

However, he clearly underestimated Momona's chakra reserves. This surging chakra constantly impacted and cleansed, stirring up the blockages.

This made Izumi frown slightly, and he quickened his movements even more.

"optimization!"

His supernatural abilities worked in two ways once again, reducing Momona's body's rejection of his chakra and allowing his own chakra to merge with hers to some extent.

At the same time, it is rapidly constructing new [Yin Seal] patterns, or rather, it is no longer a [Yin Seal] now.

Instead, it should be called the "Yin-Yang Seal," which divides the human body into Yin and Yang halves, allowing them to flow and circulate between each other before combining.

In this way, chakra is no longer stagnant water, but flowing water, which can still regulate the body's cells and ensure that they are maintained in the best condition.

At the same time, the flowing chakra can also become a source of power for performing ninjutsu or other techniques, without having to completely break the seal.

Izumi withdrew his hand and looked at the Yin-Yang seal on the other person's lower abdomen, which perfectly formed a Tai Chi pattern. He could only say that the research of his predecessors was still too profound.