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"You''ve all mastered Tree Climbing and Water Walking? No wonder you learned the Strength of a Hundred Seal so quickly."
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Tsunade was no longer surprised by their rapid progress.
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"Well, I guess I have nothing left to teach you. Let''s start taking missions tomorrow."
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She sounded a bit disappointed.
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"Tsunade, want to learn a Jutsu?"
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Shin asked, a Rasengan swirling to life in his hand.
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Tsunade had taught them her secret technique; he didn''t mind returning the favor.
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"You''re going to teach me that no-hand-seals Jutsu?"
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Tsunade was surprised. Not many Shinobi were willing to share their Jutsu.
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"Of course. You taught us your secret Strength of a Hundred Seal technique; it''s only fair that I teach you something in return. Besides, don''t you want to learn it?"
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"Well, since you''re offering, I suppose I''ll learn it," Tsunade said with a playful arrogance.
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Shin''s lips twitched. He hadn''t expected Tsunade to be so tsundere.
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He explained the Rasengan training method to Tsunade and even provided personal guidance. But even so, it wasn''t something that could be mastered quickly.
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It would take at least a few days.
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"This Rasengan is pretty good, but I don''t see how it''s useful for me."
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Tsunade said. No-hand-seals Jutsu were powerful, but her fists were just as strong.
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Why bother with the Rasengan when she could just punch her enemies?
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"Don''t underestimate the Rasengan. It has a lot of potential. The basic Rasengan is a non-elemental Jutsu, but you can add Chakra Nature transformations to create even stronger Jutsu."
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Shin explained.
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In the original story, Naruto had taken the Rasengan to incredible heights.
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"And the Rasengan isn''t limited to close-range combat. It can be used for long-range attacks as well."
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Shin held out his hand, Chakra gathering and swirling into a Rasengan.
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He increased the Chakra output, the pale blue sphere deepening in color.
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Then he threw it. The Rasengan struck a rock thirty meters away, exploding on impact, pulverizing the rock and creating a small crater.
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"You can throw the Rasengan?" Kushina gasped.The narrative has been taken without permission. Report any sightings.
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"Yes, but you need to make it more condensed and stable."
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Naruto, in the original story, couldn''t throw the Rasengan, but Shin, after some research, had figured it out.
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The reason the Rasengan couldn''t be thrown was that its unstable rotation would cause it to dissipate once it left the user''s control.
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By increasing its stability, it could be thrown.
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But this came with a drawback: increased Chakra consumption. Making the Rasengan more stable required more Chakra.
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A thrown Rasengan consumed three times the Chakra of a regular Rasengan.
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It was a trade-off, but Shin had Chakra to spare. For him, the benefits outweighed the costs.
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Kushina and Tsunade''s eyes lit up as Shin explained how to throw the Rasengan. Mikoto, however, sighed.
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Shin had already taught her the Rasengan, but she couldn''t throw it.
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She didn''t have enough Chakra. The Uchiha Clan had decent Chakra reserves, but they couldn''t compare to the Senju and Uzumaki.
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Mikoto could barely create two Rasengan. It was an A-rank Jutsu, after all. Even though it was less Chakra-intensive than other A-rank Jutsu, it still required a significant amount.
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"Let''s head back for today. Meet me at this training ground tomorrow," Tsunade said.
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"You two go ahead. I''ll train here for a bit."
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Tsunade nodded and left with Kushina and Mikoto. Kushina had wanted to stay, but Tsunade dragged her away.
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Once they were gone, Shin activated the Mind''s Eye of Kagura, confirming that there was no one within several dozen kilometers. His eyes turned crimson, three black tomoe swirling.
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The tomoe spun faster and faster, merging into a five-pointed shuriken shape.
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The Mangekyō Sharingan.
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The Sharingan was a reflection of the heart. When it evolved from the three-tomoe stage to the Mangekyō Sharingan, it awakened three new abilities.
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Besides the Susanoo, which was common to all Mangekyō Sharingan, the other two abilities were unique to each user, born from their deepest desires.
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The Mangekyō Sharingan could awaken incredibly powerful abilities, like Obito Uchiha''s Kamui and Shisui Uchiha''s Kotoamatsukami.
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And Shin''s two abilities were perhaps even more broken.
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His left eye''s ability was Yomotsu Hirasaka, the ultimate Space-Time Ninjutsu. It allowed the user to travel between dimensions instantaneously, without the need for any markings or formulas.
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It was far superior to the Flying Thunder God Jutsu.
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It was a Jutsu that could only be used by those who possessed all three dōjutsu: the Sharingan, Byakugan, and Rinnegan.
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In the original story, even including Boruto, only Kaguya ōtsutsuki and Urashiki ōtsutsuki could use this Jutsu.
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But as Shin''s Mangekyō ability, he could use it even without the Byakugan and Rinnegan.
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His right eye''s ability was even more broken. It was called Tenmomei, and if Yomotsu Hirasaka controlled space, Tenmomei controlled time.
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It allowed Shin to rewind his personal time by three minutes.
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Three minutes might not seem like much, but in battle, it was a game-changer.
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If he was injured, he could rewind time and undo the damage.
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Unless someone could kill him instantly, they wouldn''t be able to harm him. He could be injured one second and perfectly fine the next.
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And combined with Yomotsu Hirasaka, his survivability was practically unmatched.
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"Am I really that afraid of death?" Shin chuckled to himself.
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He decided to test his new abilities. He took out a Kunai and slashed his arm. His clothes tore, but his skin was unharmed.
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Shin blinked. Had his skin become so tough that even a Kunai couldn''t pierce it?
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"Looks like I''ll have to use the big guns."
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He took out a scroll and unsealed a sword.
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He made a small cut on his arm, then activated Tenmomei. The wound vanished instantly.
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His clothes, however, remained torn. It seemed Tenmomei only affected his body. Clothes were external objects; the Jutsu didn''t apply to them. The Chakra and dōjutsu strain, however, was significant.
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Using Tenmomei didn''t rewind the Chakra and dōjutsu exhaustion he had experienced.