Yin Seal Technique

Konoha

The midday sun shone on Naraku's residence in the Uchiha Clan Compound. Naraku originally lived with his parents, but later moved to the Clan Affairs Hall. However, Naraku sometimes practiced Ninjutsu, so living in the Clan Affairs Hall was somewhat inconvenient.

So he built a mansion on the edge of the clan's territory, with a front yard and back yard, planted with flowers and trees, artificial hills and water, and a training ground where Naraku could practice his Ninjutsu.

Naraku his bed in the bedroom, bathed in the glaring sunlight. Exhausted from the long hours of intense work, he had accidentally drunk too much the night before and returned home somewhat tipsy.

"I should have helped Tsunade back last night, but where is she?"

Although he was a little drunk last night, Naraku didn't black out and took the drunk and asleep Tsunade back to the mansion to rest.

Naraku originally intended to send Tsunade back to the Senju Clan Compound, but he had never been to Tsunade's Naraku, as they mostly met at work. In the end Naraku took Tsunade back to his own residence.

Naraku recalled what had happened last night, and touched the damp bedsheets, soaked with sweat. Naraku couldn't help but blush slightly.

Last night, Naraku a little drunk. The two of them had been thinking about each other and were somewhat in love, but after drinking, their true nature was revealed. Like dry wood meeting a raging fire, they ignited at the slightest touch. It's unclear whether it was Naraku or Tsunade who were driven by their animalistic instincts, but they fought until dawn before finally falling into a deep sleep.

Naraku straightened up, feeling completely relaxed. He rummaged through the wardrobe for clothes, reminiscing about the events of the previous night and trying to recall who had made the first move.

Naraku dressed in his robes and put on a purple cardigan, his face slightly flushed, no longer thinking about what happened last night. At that moment, Naraku around and noticed several scrolls on the bedside table.

"Huh?"

Naraku found it strange, walked to the bedside, picked up the scrolls and looked at them. Most of the scrolls were marked with S-class symbols, and a strange expression appeared on Naraku's face.

"I..."

Naraku somewhat ashamed, feeling that he had insulted his masculine dignity. It should have been Naraku the bedside; this made it seem as if Naraku was the passive one.

Naraku regained his composure, Flash Cut red light in his eyes, and began recording the reading scroll.

These scrolls contain the Yin Seal that Naraku was interested in, as well as the Strength of a Hundred Technique and Creation Rebirth Ninjutsu developed by Tsunade herself.

The Yin Seal is a secret Fuinjutsu of the original Uzumaki Clan. Normally, Chakra is stored in the Yin Seal, and over the years, a huge amount of Chakra has accumulated in the Yin Seal.

Releasing Chakra during battle allows the user to unleash a burst of power instantly, but the Yin Seal also carries risks. If the powerful Chakra released in that instant is not properly channeled, it is not impossible for the user to explode and die.

It is difficult to cultivate, dangerous, and powerful, and is classified as an S-rank secret Fuinjutsu.

The Strength of a Hundred Technique, Ninjutsu developed by Tsunade, combined with the Yin Seal, consumes Chakra to greatly enhance various abilities and attributes, making Tsunade's Taijutsu even more powerful and ferocious.

Creation Rebirth, combined with the Strength of a Hundred Technique and the Yin Seal, is a forbidden medical technique that accelerates cell division in the body, instantly healing any injury, but at the cost of shortening lifespan.

The Senju Secret Strong Fist, Strength of a Hundred combat skill that greatly enhances strength, includes fighting Taijutsu such as the Heavenly Foot of Pain.

Naraku carefully perused the text and quickly took notes. "The Yellow Flash, Namikaze Minato, has a great girlfriend who has learned many of the Uzumaki Style Sealing Technique." Naraku an eyebrow, feeling that his own girlfriend wasn't bad either.

Naraku pondered this, he thought of the Yellow Flash, who had also become famous during the Ninja War.

After Naraku finished reading and recording all the scrolls, his eyes gleamed with eager anticipation. The Yin Seal was the Uzumaki Flow, and the Strength of a Hundred Technique and Creation Rebirth that followed were Ninjutsu created by Tsunade herself.

The prerequisite for learning Yin Seal is that it is already an S-rank, extremely difficult series of Ninjutsu. Tsunade's ageless appearance and ability to control her physical appearance are not due to Yin Seal.

Even though Uzumaki Mito was a practitioner of the same Yin Seal, she couldn't maintain her youth, which shows that Tsunade as the number one medical expert in the Shinobi World is well-deserved.

Naraku originally wanted to go back to his bed and sit cross-legged to cultivate, but looking at the wet bed sheets, he hadn't felt anything when he was asleep, but now that he was awake, he couldn't lie down.

Naraku walked to the living room, sat cross-legged, and began his training according to the method of repairing and condensing the Yin Seal.

The Yin Seal gathers the sealing eye on the forehead. The human body's Dantian (energy center) is divided into three parts: the upper Dantian at the Yintang point, the middle Dantian at the Tanzhong point in the chest, and the lower Dantian three inches below the lower abdomen.

Ninjas refine Chakra by synthesizing it using spiritual and physical energy, but the Chakra is generally generated in the dantian, three inches below the lower abdomen.

Naraku didn't want to inscribe the Yin Seal mark on his forehead, but Naraku was worried about other problems if he Yin Seal it on his lower dantian. After thinking it over, he decided to try inscribing the Yin Seal on his middle dantian, the Tanzhong acupoint on his chest.

Naraku followed the recorded Yin Seal Technique, tracing the evolution of Chakra flow and Hand Seals, forming hand Hand Seals to draw in Chakra.

Naraku Fuinjutsu Fuinjutsu and could be considered an expert in them. Although the Yin Seal was extremely difficult and involved a great deal of knowledge, it was not beyond Naraku's comprehension or ability to learn.

Naraku Hand Seals and Yin Seal Chakra flawlessly. With Naraku's deliberation and modifications, blue Chakra quickly permeated his entire body.

The Chakra flow overturned many of the vases and ornaments in the living room, Naraku unmoved and continued to gather chakra, directing the Chakra that should have been gathered in his forehead dantian to his middle dantian in his chest.

Naraku felt that his Chakra was abundant. At least in Konoha and during the Ninja War, he had not seen Hidden Sand from Chakra or Hidden Mist who had more Naraku than him.

Not to mention that due to the evolution of the Sharingan, the amount of Chakra seems to have increased even further, perhaps influenced by the evolution of the Sharingan or other aspects of spiritual energy. Naraku felt that he might not be able to find anyone with a greater amount of Chakra than himself in the future.

The initial formation of the Yin Seal is crucial. With Naraku's abundant Chakra, a rhomboid mark emitting purple light quickly took shape on his chest, marking the core of the Yin Fuinjutsu.

While Naraku focused on his training, night had fallen outside the window, and Gekko streamed into the living room.

"Call!"

Naraku out a soft breath and opened his eyes, looking somewhat tired. He had used Naraku most of his Chakra, but had finally succeeded in mastering the Yin Seal, storing a considerable amount of Chakra within it.

"Um?"

Naraku frowned slightly when he saw the mess in the living room. If it weren't for the fact that they were in the Uchiha Clan Compound, heavily guarded by clan members, Naraku would have suspected that a thief had broken in.

After a moment's thought, Naraku had a rough idea of what was going on. He went to the bathroom and saw a small purple diamond-shaped mark in the center of his chest on the bathroom mirror.

"As I predicted, the Yin Seal has indeed been successfully cultivated."

Naraku looked at the man in the mirror; he was tall and slender, with well-defined muscles and deep, dark eyes.

"Yeah, still so handsome."