"Shisui and Obito, both of you will be learning Flame Breathing, while Guy, you will be learning Stone Breathing," Mutsuki announced the names of the Ninjutsu they would be studying next.
Since Mutsuki had warned them beforehand that what they were about to learn was challenging, even the usually carefree Obito remained silent, attentively listening to Mutsuki's lecture.
As Stone Breathing was the most difficult to master, Mutsuki had Shadow Clones explain the theoretical knowledge of breathing techniques to Shisui and Obito, while he began teaching Guy Stone Breathing.
"The crucial point in breathing techniques lies in breathing itself. Through controlled and focused breathing, inhaling a significant amount of oxygen into the body reaches every cell, thereby enhancing strength and speed comprehensively," Mutsuki explained the principles of breathing techniques.
"If you can master Stone Breathing and enter the state of Total Concentration Breathing, not only will your strength increase, but your body's healing speed will also accelerate, and your mind will become more active."
"Once you can maintain Total Concentration Breathing for twenty-four hours a day, the rate at which your physique strengthens will be several times what it is now. If you also master Stone Breathing, you will tread the path of the strongest Taijutsu Ninja!" Mutsuki painted a bright future for Guy.
"Such a powerful technique!" exclaimed Guy, his eyes widening in astonishment.
The idea of doubling the effectiveness of his physical training was beyond comprehension. What he had been striving for over three years might be achieved in just a year or a year and a half after learning Constant.
This was immensely appealing to Guy, who was determined to excel on the path of Taijutsu Ninja.
"Guy, take a few steps back," Mutsuki instructed, preparing to demonstrate the true power of Stone Breathing to Guy.
"Stone Breathing, Total Concentration Breathing, Shigan!"
Mutsuki inhaled a large amount of oxygen into his body, unleashing the power of every cell, ultimately channeling it into his index finger. With the addition of Chakra, he then pointed towards the surface of the river eighty meters away.
Huff, huff!!
The powerful finger force directly stirred up a massive whirlwind, and an invisible shockwave rapidly flew towards the surface of the river.
In the next moment, a colossal explosion resounded instantly.
Boom, boom, boom!!!
The river roared with a tremendous noise, and the waves generated by the explosion soared to a height of more than ten meters, even blasting some fish onto the riverbank.
In this area filled with towering trees over twenty meters high, Mutsuki refrained from exerting too much force on shorter trees.
"This is the power that Stone Breathing and Total Concentration Breathing can unleash," Mutsuki said, lowering his hand.
"Such destructive power!" exclaimed Guy in astonishment.
Considering they were over eighty meters away from the river surface, the force displayed at such a distance was remarkable. A finger poke from this technique would be overwhelming for anyone.
"You will become even stronger in the future," Mutsuki said, smiling as he patted Guy's head.
"Yeah, I will train hard!" Guy responded, now filled with excitement, his mind consumed by thoughts of breathing techniques and Mutsuki's powerful demonstration.
"Let's begin our training, stand firm," Mutsuki commenced the formal instruction.
Upon hearing Mutsuki's words, Guy straightened his chest, lifted his head, and stood at attention.
"Relax the upper body, inhale deeply, and stabilize the lower body," Mutsuki began teaching the most fundamental and crucial aspect of breathing techniques.
Guy followed Mutsuki's instructions, but Mutsuki shook his head and said, "Use force in the abdomen while breathing. Remember to engage the abdominal muscles, not just open your mouth wide."
Mutsuki then demonstrated several times before letting Guy try again.
"Sensei, I breathed forcefully, but I didn't feel what you described," scratched Guy's head, expressing his confusion.
"Don't rush, take it slowly. Consistent and persistent practice is key," Mutsuki said with a gentle smile.
Stone Breathing is highly challenging, and Mutsuki set the expectation for Guy to grasp it within a year to consider it a success.
Guy nodded and continued practicing according to Mutsuki's instructions.
Creating a Shadow Clone to assist Guy, Mutsuki went over to Obito and Shisui's side.
"Yumi-sensei, was that move you just used the one Guy is going to learn? It feels incredibly powerful!" Obito exclaimed excitedly as soon as Mutsuki approached.
They weren't far away, and with the significant display Mutsuki had just made, they couldn't help but notice.
"Yes, that's right. Just now, I used Taijutsu in the state of Total Concentration Breathing with Stone Breathing," nodded Mutsuki.
"If Guy learns Stone Breathing, it will be incredible!" Obito sighed, impressed by the power displayed with just one Taijutsu move.
"Don't worry, Flame Breathing, which you two are going to practice, is no less powerful than Stone Breathing. It can significantly enhance your strength as well," Mutsuki smiled and reassured them.
Both breath techniques are considered top-tier forbidden jutsu; it all depends on the skill of the user.
"Yumi-sensei, could you show us the strength of Flame Breathing too?" Obito looked at Mutsuki with anticipation.
Even Shisui displayed a curious expression.
Mutsuki, of course, wouldn't refuse such a small request from his disciples. He changed his breathing rhythm, switching from Constant in Stone Breathing to Constant in Flame Breathing, walking towards the river.
"After you learn Flame Breathing and practice Total Concentration Breathing with Flame Breathing, it accelerates the Nature Transformation of Fire Chakra, enhancing the power of flames," Mutsuki explained.
"If you can maintain uninterrupted Total Concentration Breathing throughout the day, the effects of accelerated Nature Transformation and enhanced flame power will become constant, with even stronger explosive force," Mutsuki continued while preparing to perform Ninjutsu.
"Nature Transformation acceleration, making the flames stronger!" Shisui was directly shocked by Mutsuki's words.
Understanding the theoretical knowledge well, he knew what Mutsuki mentioned represented a brutal and straightforward way to raise the upper limit of Fire Release.
"At the same time, it can enhance physical strength to a certain extent, as well as restorative abilities," Mutsuki continued, explaining these abilities that are inherent to breath techniques.
When reaching the riverbank, Mutsuki immediately formed hand seals and unleashed Ninjutsu.
"Fire Release: Fire Dragon Flame Bullet!" Mutsuki opened his mouth, releasing a vast expanse of flames resembling a dancing dragon. The flames split into three directions – front, left, and right – rushing towards the river surface. In an instant, a fire sea over twenty meters wide covered the river.
As the flames descended into the water, continuous water vapor emerged, shrouding the surroundings in a thick white mist. Mutsuki used Wind Release to disperse the water vapor.
In truth, Mutsuki possessed more potent Ninjutsu, such as Mastery-level Intelligent Hard Work or Great Fire Destruction, both surpassing the power of Fire Dragon Flame Bullet. However, those two techniques had excessively large ranges, and if Mutsuki used them here, it might result in burning down the nearby forest.
"So powerful, I really want to learn it!" Obito admitted honestly.
"Could this Flame Breathing be an S-rank Secret jutsu?" Shisui expressed great astonishment.
Mutsuki's strength became increasingly elusive in his mind. Every time he thought he had a grasp of Mutsuki's abilities, Mutsuki would reveal something new and astonishing.
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