Tobirama Senju:
"Faster training speed? What's going on here?"
Orochimaru:
"Hahaha… Nagi, it seems Kabuto and I were correct."
Kabuto Yakushi:
"Lord Nagi, if becoming stronger requires it, one can temporarily discard their sense of shame."
Nagi :
"…Th-that's not necessarily the case."
Tsunade:
"What kind of riddle are you people speaking in?"
Orochimaru:
"Hahaha, then allow me to explain. That night, Nagi was emotionally stimulated, which caused his Yin Release chakra to surge. At the same time, the power he obtained from his Mangekyō Sharingan was also activated."
Fugaku Uchiha:
"The ability of the Mangekyō Sharingan?"
Shisui Uchiha:
"Could it be an ability that accelerates training? No wonder Nagi became so powerful two and a half years later."
Orochimaru:
"No. That speed was Nagi's natural training pace. This time, however, his cultivation speed was enhanced."
Naruto Uzumaki:
"What does that even mean? I'm completely confused!"
Orochimaru:
"In that case, I'll explain it. Besides, revealing this information may actually benefit you, Nagi."
Nagi :
"..."
Orochimaru continued:
"The Mangekyō Sharingan is often called the eye that reflects the soul. The abilities awakened within it usually mirror the owner's mental state at the moment of awakening.
"At the time, Nagi was wholeheartedly devoted to cultivating Yin–Yang chakra.
"So the ability awakened in his Mangekyō became a dōjutsu specialized for cultivation.
"His two Mangekyō abilities are called 'Yin' and 'Yang.'
"As Nagi's strength increased, these two powers gradually fused together—
"Becoming 'Yin–Yang.'"
Kabuto Yakushi:
"Lord Orochimaru and I conducted numerous examinations afterward. We discovered that Lord Nagi cannot actively use this Mangekyō ability.
"But after consulting many legends and ancient texts, combined with our analysis, we were finally able to determine what his ability actually does."
Orochimaru:
"Nagi's Mangekyō ability clearly represents dual cultivation of Yin and Yang.
"In other words, the ability can only activate when another person cultivates together with Nagi.
"When activated, it directly accelerates the cultivation of Yin–Yang chakra.
"Yang represents the body.
Yin represents the spirit.
"When both are cultivated simultaneously, the growth rate of both practitioners increases in every aspect.
"The closer the two individuals are—
"Whether in physical distance or emotional closeness—
"The faster their training speed becomes."
The entire ninja world erupted in shock.
Wait… if Orochimaru was right—
Didn't that mean the closer someone was to Nagi, the faster their training speed would become?
Seeing what everyone was thinking, Orochimaru quickly poured cold water over their excitement.
Orochimaru:
"However, the conditions for Yin–Yang dual cultivation are extremely strict:
The two participants must be of opposite sexes.
The difference between their Yin–Yang chakra attributes cannot be too large. Otherwise, the acceleration effect will not work for Nagi.
Nagi himself must not reject the partner. Only then can the Mangekyō ability activate."
Tobirama Senju:
"I see. Being of opposite sexes is manageable, but matching Yin–Yang chakra attributes is far more difficult."
Orochimaru:
"Exactly, Lord Second Hokage. Nagi's Yin–Yang chakra is extraordinarily powerful in both quality and quantity. In this world—excluding Kaguya Ōtsutsuki—there are almost no individuals capable of matching it."
Madara Uchiha:
"I see. Naruto and Sasuke possess extremely refined chakra attributes, but they are the same sex. That girl Hinata has exceptional Yin–Yang chakra, but she essentially ruined her own potential."
Jiraiya:
"But in that world, Naruko, Satsuki, and Hinata all satisfy the conditions for Nagi's dual cultivation."
Mei Terumī:
"I have a question. Since both physical and emotional closeness affect the ability… wouldn't Nagi's wife have the greatest advantage?"
In other words—
Negative distance contact.
The ninja world exploded again.
"Holy—!"
Orochimaru:
"Yes. That would greatly accelerate the cultivation of both parties."
Jiraiya:
"Whoa! Nagi, that ability is every man's dream!
"But seriously—why does your Mangekyō ability require male–female dual cultivation to enhance Yin–Yang chakra? Shouldn't there be other ways?"
Kabuto Yakushi explained:
"There are two main reasons.
First, dual cultivation offers one of the fastest possible training speeds.
Second, Lord Nagi studied under the Second Hokage and worked with Lord Orochimaru for many years.
"It is highly likely that he had absolutely no interest in romantic matters between men and women.
"But when something reaches an extreme, it often rebounds in the opposite direction.
"When the Mangekyō Sharingan awakened, the ability mutated slightly—creating a power that resembles his inner self, yet is not exactly the same."
Tsunade:
"Hahaha! A complete idiot when it comes to romance, yet awakening an ability like this? The mutation probability is so low, yet it happened to you. That's hilarious!"
Jiraiya:
"Come on, Tsunade. The probability of such mutations is about the same as you winning a bet—extremely small, but it still happens."
Tsunade:
"Jiraiya, you're dead!"
Minato Namikaze:
"So in that case, Satsuki and Nagi experienced faster training because of Nagi's Mangekyō ability."
Orochimaru:
"Correct. However, the two of them only realized that training together improved their speed. They still don't understand the real reason."
Jiraiya:
"Tsk… those two brats really don't understand anything."
The screen continued.
During the vacation, Satsuki and Nagi gradually developed a tacit understanding and often trained together.
One day, as usual, Satsuki prepared to head toward the Naka River.
Her brother Itachi approached her with concern.
"Going to train again? Want your big brother to train with you?"
Without even turning around, Satsuki replied,
"No need. I can handle it myself. And don't you have a mission today?"
Itachi smiled indifferently.
"How could any mission compare to my world's cutest little sister? So, Satsuki—want your big brother to accompany you?"
Satsuki opened the door and left behind a single sentence:
"That's disgusting. Stop bothering me."
Then she slammed the door shut.
Itachi froze instantly.
He stood there like a statue struck by lightning.
After finishing the dishes, Mikoto Uchiha noticed him standing blankly at the doorway.
"What's wrong? Aren't you supposed to be heading out on a mission?"
She lightly tapped him—
And the "Itachi statue" shattered into pieces.
"Rejected by Satsuki again?"
Mikoto was already used to it and calmly returned to the kitchen.
That day, Itachi's mission was to patrol the Uchiha Clan district and check for potential security risks.
Standing atop a watchtower, he surveyed the surroundings with binoculars.
He saw:
Shopkeepers selling grilled snacks
Uchiha children laughing and playing
Women chatting about daily life
And Izumi, who had just bought the dango he liked so much
Afterward, Itachi began inspecting darker alleyways and hidden corners of the district.
Suddenly—
In one shadowy corner, he noticed something strange.
The air briefly twisted into a spiraling distortion, forming a tiny vortex.
A small gust of wind scattered some nearby trash—
And then the phenomenon vanished.
"…Was that just my imagination?"
PS: I've been releasing chapters daily . Honestly, it hurts seeing almost no support on Patreon after all that work.If you're enjoying the fic, even a little, supporting me would mean a lot. It helps a student stay independent .
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