Chapter 189: Teaching the Breathing of Thunder
After instructing Shisui for two hours, Mugetsu's main body exchanged places with his Shadow Clone. The clone continued teaching Shisui, while the main body returned to oversee Kakashi and the others.
Though Shisui was undeniably the most promising disciple, Mugetsu never allowed favoritism to guide his teaching. He shared his knowledge evenly—each student was a vital piece in his larger vision.
Upon returning, Mugetsu used his Appraisal Technique to assess their current progress. Kakashi and Obito had already developed some proficiency in Yin Release—though Obito's was minimal, barely one point—while Might Guy's was still at zero.
Mugetsu wasn't surprised. This was, after all, Might Guy—who had spent a full month failing to master Shadow Clone even with the help of his Teaching ability.
However, under the enhanced teaching boost of Mugetsu's main body, their growth was notable. Within two hours, Kakashi's Yin Release proficiency rose from three to ten points. Obito's increased from one to three. As for Guy… he finally broke through zero, gaining a single point.
It wasn't much, but Mugetsu was genuinely pleased. As long as there was progress, there was hope. Even the slowest climb could reach the peak in time.
By afternoon, Mugetsu decided not to let Guy continue with Nature Transformation practice. Instead, he directed him to train in the Eight Gates.
For Guy, mastering the Eight Gates was the true key. His greatest potential lay in pairing Rock Breathing with his immense physical prowess. The stronger his mastery of the Eight Gates, the greater the Chakra reserve Rock Breathing could draw upon.
After all, Armament Haki when used without precise control was a Chakra consumer. Even if Guy learned it now, it wouldn't be practical in battle. Without the vast Chakra output provided by the Eight Gates, where would he find the energy to sustain it?
Meanwhile, Kakashi and Obito continued their Yin Release Nature Transformation training throughout the afternoon.
Nature Transformation was easy to grasp, but difficult to refine. Many Chunin instructors in the village could use Yin Release, but most were at the beginner level—barely capable of applying it to simple Genjutsu.
Based on Kakashi's current pace, Mugetsu estimated he could reach the beginner threshold within a week. The gap from uninitiated to initiated required one hundred proficiency points. Although Kakashi gained ten points in a morning, each increment grew harder as comprehension deepened.
As for Obito, Mugetsu predicted it would take around twenty days. And Guy… perhaps months. Maybe more.
Near the end of training, Mugetsu formed another Shadow Clone and sent it toward the Training Grounds for the holiday special class. He had promised Anko and the others that he'd visit whenever time allowed.
His main body was far too occupied constantly using his skill to accelerate his students' learning but sending a clone was a simple matter.
When Mugetsu arrived at the Training Ground, the session was nearing its end. The students were resting, sprawled across the grass.
Scanning the area, Mugetsu's gaze landed on Anko, lying flat on the ground like a fallen soldier. He walked over, a faint smile on his lips.
"How's the special training going?" Mugetsu asked warmly.
At the sound of his familiar voice, Anko's eyes snapped open. The moment she saw him, her face lit up. She immediately threw her arms around his leg and cried out,
"Teacher Mugetsu! The holiday special training can't go on without you! Without you, it's like a strawberry cake without strawberries it just isn't sweet anymore!"
Mugetsu chuckled softly, crouching down to ruffle her hair before sitting beside her on the grass. "Oh? What happened? Why does the training lose meaning without me?"
Anko's voice had already caught the attention of nearby students. Recognizing Mugetsu, several of them quickly gathered around.
"Those teachers don't teach like you do, Teacher Mugetsu," one student complained. "They pile on training drills without explaining anything properly—and they don't even let us rest between sets!"
Anko poured out all her frustrations from the past few days to Mugetsu.
"That's right! Even with several teachers, they're still not as good as you, Teacher Mugetsu," one student nearby said, nodding in agreement as Anko complained.
The surrounding students echoed the sentiment. The previous special training had been a huge success, so why change what was already working?
Anko's words opened the floodgates—students began voicing their own dissatisfactions one after another, while Mugetsu listened quietly with a calm smile.
He wasn't surprised. This outcome was within his expectations.
After the success of the last special training, Mugetsu had been promoted to Special Jōnin by the Third Hokage. For this new session, the village had assigned several skilled Chūnin instructors to replicate his success.
Individually, none dared to compare themselves to Mugetsu—but together, they believed they could achieve the same results. Even if they couldn't match his achievement as a Special Jōnin, surely they could secure a promotion or at least a raise.
However, reality was cruel.
Even without the Professor skill, Mugetsu's teaching ability far surpassed theirs. His high-proficiency skills came from countless hours of real combat experience, and unlike most shinobi, he had also studied systematic teaching methods from another world.
Neither in Ninja knowledge nor in pedagogy could those Chūnin instructors compare.
When they realized that their combined efforts still couldn't produce the same results as Mugetsu's solo sessions, they grew anxious. Their solution was predictable—increase the training load.
After all, more practice couldn't possibly make results worse, right?
As more students noticed Mugetsu's arrival, the group around him grew larger. Some came just to watch the commotion, but upon seeing the familiar teacher, they couldn't resist joining in.
The crowd swelled rapidly until nearly every student had gathered near Mugetsu.
"Why are you all gathered here? Return to your own classes!" a Chūnin teacher barked, walking over after noticing the disturbance.
"It's almost the end of class anyway," Mugetsu said mildly. "Let them rest for a while."
The teacher froze when he finally noticed who was sitting among the students. The group's sheer size had obscured Mugetsu from view.
"Oh—it's Director Mugetsu! You're right, of course," the Chūnin said quickly, his stern tone replaced by a nervous smile. "Everyone, rest well!"
As an ambitious instructor, he deeply admired Mugetsu—who had risen from a new teacher to Special Jōnin in less than a year, achieving both academic and battlefield recognition.
Mugetsu continued chatting with the students, patiently answering their questions. Even after the session ended, many lingered, reluctant to leave.
"I won't be able to participate in this round of holiday special training," Mugetsu explained. "I have other duties to handle. As for the future, it depends on Lord Third Hokage's arrangements—but personally, I'd like to continue leading the training."
He smiled as he spoke, his calm presence reassuring the crowd.
Once Might Guy and his team graduated, Mugetsu knew he would likely pause his intern programs for a while. Shisui would still be in Fourth Grade then, so there was no immediate rush.
"I'll coordinate with the current instructors," Mugetsu added, "and see if we can come up with a more balanced and effective training plan."
The students brightened at his words. They had impressed him once before during the last special training, and Mugetsu didn't mind helping them again—it cost him nothing but a little time.
"Teacher Mugetsu is the best!" Anko cheered, her eyes sparkling. She decided right then that if the next special training wasn't led by him, she wouldn't attend at all. After all, participation wasn't mandatory for students outside Fourth Grade.
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The Next Day
Morning proceeded as usual: Kakashi, Obito, and Guy continued their Yin Release Nature Transformation training, while Shisui practiced Armament Haki separately.
By afternoon, Mugetsu began a new lesson—this time, Lightning Breathing for Kakashi.
He hadn't taught it the previous day for a simple reason: the disciple teaching reward could only be triggered once per day. To ensure he received an additional return, he had intentionally delayed the lesson.
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