Special Training

The next day, without any surprise, they were assigned D-rank missions: pulling weeds, helping residents of Konoha find lost cats and dogs, and picking up trash in the sewers.

"Although these missions are boring, are you sure Naruto Uzumaki can handle all of this alone?"

In front of Kakashi Hatake were dense crowds of Naruto Uzumaki, working hard in a small river with baskets and tongs to pick up trash, while not far away, one could hear Naruto Uzumaki shouting as he chased a cat to make it stop.

"Don't worry, Naruto Uzumaki is from the Uzumaki Clan and is incredibly durable; this is also to train his physical strength. Besides, isn't this a mutually beneficial deal between us? Naruto Uzumaki takes on the missions for us, and I teach them how to train. Well, it's very fair."

Kakashi Hatake couldn't help but rub his forehead. In front of him, Mufeng Uchiha was constantly trying to practice Chidori on the bank, but every time he failed to condense the lightning on his hand, it would quickly dissipate, leaving his palms injured by the electricity.

Naruto Uzumaki squatted halfway, his face flushed red, looking completely out of breath.

"Naruto Uzumaki, I told you to breathe, not to hold your breath. Sakura Haruno is doing it right; she is already very close to mastering the basics of a Breathing Style."

On the side, Sakura Haruno's breathing was gradually stabilizing. She had already grasped the knack for Water Breathing, which was the easiest to start with, while Naruto Uzumaki still hadn't figured out the trick to Wind Breathing.

"It's no use, this Wind Breathing is too hard. I still can't run through the Breathing Style smoothly."

Mufeng Uchiha couldn't help but rub his forehead. This Wind Breathing was the one he shared from the memories of Demon Slayer Mufeng that was most suitable for Naruto Uzumaki.

"I will demonstrate it for you one more time. Feel my guidance and breathe accordingly."

Mufeng Uchiha placed his hand on top of Naruto Uzumaki's head, channeling his Aura deep into Naruto Uzumaki's body to guide his breathing.

This time, Naruto Uzumaki's breathing was very smooth, and he performed Wind Breathing quite naturally.

"Haha, I, Naruto Uzumaki, am indeed a genius! I have finally mastered Wind— cough, cough."

Excited, Naruto Uzumaki's breathing suddenly became chaotic, and he immediately choked. Sasuke Uchiha, who was watching from the side, couldn't help but say:

"Idiot dead-last."

"Damn Sasuke, I have mastered Wind Breathing! Hmph, don't tell me you haven't even mastered Chidori yet, Sasuke."

Naruto Uzumaki looked at the dense wounds on Sasuke Uchiha's hands and couldn't help but feel smug. So much for Sasuke; he was nothing special.

"Who says? I am a genius. You only mastered Wind Breathing because of Mufeng's help. If it were me, I could have mastered it alone."

Seeing Sasuke Uchiha's tsundere expression, Mufeng Uchiha turned to look at Kakashi Hatake, who was slacking off while reading Icha Icha Paradise.

"Ah, how troublesome. Sasuke, you are barely passing in terms of shape transformation, but your nature transformation is still not proficient enough."

As he spoke, Kakashi Hatake took Sasuke Uchiha aside to start correcting his Chidori one by one, fixing the flaws in his execution bit by bit.

"Naruto, try performing Wind Breathing on your own again."

Mufeng Uchiha couldn't help but admire Naruto Uzumaki's talent. After just one guided session, Naruto Uzumaki was able to run Wind Breathing smoothly by instinct.

As for Mufeng Uchiha, he had been using the opportunity of coaching to check Naruto Uzumaki's body with Aura. Under the ability sharing, he only possessed one-tenth of Pokemon Mufeng's Aura, but it was still quite easy to find the Asura Chakra hidden within Naruto Uzumaki.

"It is almost impossible to extract the Chakra belonging to Asura; it contains the obsessions belonging to him and Indra. Absorbing it rashly would likely result in being influenced by his will."

Knowing the original story, Mufeng Uchiha understood that to obtain the Rinnegan, one must have both Asura and Indra's Chakra to successfully evolve it.

Since Madara could evolve the Rinnegan by consuming Hashirama Cells, why not combine Sasuke Uchiha's blood with Hashirama Cells to create a potion that could evolve the Rinnegan without needing the two Chakras?

"As expected, I really can't do without you, the omnipotent Orochimaru."

"I can't do it anymore, I'm exhausted!"

With the three D-rank missions completed, the fatigue from dispelling the Shadow Clone rushed over Naruto Uzumaki all at once, and he collapsed onto the ground like a puddle of mud.

"Kakashi-sensei, do you really know how to teach? Mufeng teaches better than you."

Kakashi Hatake's process of teaching Sasuke Uchiha the Chidori didn't seem to be going very well; Sasuke Uchiha kept complaining that Kakashi Hatake was teaching too slowly and wouldn't let him fully master the Chidori.

"Second Pillar, everything requires a step-by-step approach; you can't be too impatient."

Mufeng Uchiha saw that Sasuke Uchiha's hands were already covered in wounds from the lightning; if he continued, he would definitely suffer long-term consequences.

In the years he had spent with Sasuke Uchiha, if it weren't for Mufeng Uchiha's care, Sasuke Uchiha would have already accumulated countless hidden injuries from this suicidal training method.

"In order to kill that man, I cannot slack off in the slightest. Before that, I am willing to pay any price! You should understand, Mufeng."

After saying this, Sasuke Uchiha tried to condense the Chidori again, but this was only harming his own body.

"Sigh, I can understand you, Sasuke, but if you keep this up, you'll collapse before you even get your revenge."

Mufeng Uchiha interrupted Sasuke Uchiha's attempt to continue practicing Chidori. He had been wanting to try out a combination technique between Sasuke Uchiha and Naruto Uzumaki for a while.

"The strength of one person is ultimately limited. Sasuke, your Chakra affinity with Naruto is very good; why don't you try a combination ninjutsu?"

"A combination technique with this smug Sasuke? I'd rather die!"

Naruto Uzumaki, who had been unconscious on the ground, suddenly sprang to life, immediately refusing upon hearing Mufeng Uchiha's words.

"Truly worthy of the Uzumaki Clan; he recovers to a normal state after just this much rest."

While Mufeng Uchiha was complaining, Sasuke Uchiha righteously refused, stating that he would never cooperate with this dead-last.

"Mufeng, are you sure you aren't joking about having Naruto and Sasuke cooperate to perform a combination ninjutsu?"

Kakashi Hatake didn't think these two bickering rivals could ever reach the level required to perform a combination ninjutsu.

"Just watch, Kakashi-sensei. In this world, no one will have more tacit understanding than these two."

Although they were unwilling in words, the two still followed Mufeng Uchiha's suggestion and began to try coordinating. Since Naruto Uzumaki didn't know many ninjutsu, they chose to combine their Breathing Style with ninjutsu.

"Damn it, Sasuke, your fire almost scorched me."

"Hmph, it's your Wind Breathing that's too slow."

The Phoenix Sage Fire Technique spat out by Sasuke Uchiha combined with the wind blades Naruto Uzumaki slashed out using his Chakra-infused Wind Breathing to form a perfect union; the fusion of wind and flame created a power far exceeding that of standard combination ninjutsu.

"I use Water Breathing, so I should be able to perform combination ninjutsu with Sasuke too, right?"

Sakura Haruno watched Naruto Uzumaki and Sasuke Uchiha perform their combo technique with an envious look, while Kakashi Hatake cast a glance at Mufeng Uchiha and couldn't help but remark.

"Perhaps everyone was wrong; you are the one with the greatest talent among the Uchiha. It's a waste of time to keep having you perform D-rank missions, so we'll take on a C-rank mission next time."