The next day, as soon as Uncle Sasuke woke up, he planned to leave with Boruto.
After hearing the news about Isshiki Otsutsuki, Uncle Sasuke didn't feel much joy even after joining forces with Naruto to defeat Urashiki. Instead, he felt a sense of urgency.
He had to go back and find a way to become stronger with Old Man Naruto so that he could protect his world.
Boruto didn't think so much. Having been constantly watched by Naruto to study, Boruto couldn't help but cheer. He could finally escape this terrifying cram school hell!
Even though he had only been away from home for a few days, Boruto missed his useless father, whom he used to dislike so much.
After comparing him with the strict father figure of Naruto here, he could understand how good his own father was to him. Although he didn't spend much time with him, he always cared for and indulged his willful nature.
Just thinking about how soon he could go back and have a happy dinner with his parents and his sister Himawari, Boruto couldn't help but smile.
"Stay a few more days before you leave."
But the next moment, the smile on Boruto's face froze.
He watched as Naruto reached out and took the turtle that could travel through time and space from Uncle Sasuke's hand.
He wanted to stop him, but he didn't have the courage to confront him.
"Boruto needs to study, and your body needs to recuperate. Stay for three more days," Naruto said without any room for argument.
Although Naruto kept joking that Sakura's juicer was too powerful, causing Uncle Sasuke to have kidney deficiency, that was only one of the reasons.
The bigger reason was that Sasuke had been living outdoors for more than a decade, coupled with the physical defect caused by the severed arm, and the damage from the final battle with Naruto.
All these factors combined were the reason why Uncle Sasuke's body was not in good shape.
Although three days wouldn't be enough to fundamentally cure Uncle Sasuke's physical deficiencies, he could use this time to prescribe some prescriptions to replenish blood and qi, nourish yin and tonify the kidneys to recuperate his body.
In addition, he could also popularize some methods of maintaining health.
Ninjas are strong in combat, but they only excel at killing and are not so proficient in health preservation.
He had a good time getting along with Uncle Sasuke during this period, and they also fought side by side against Urashiki, so they could be considered friends. Naruto didn't want to see his friend die young.
Watching Naruto's firm eyes, and thinking that the problems of Sasuke and Itachi in this world had not been resolved, and they could also discuss it in these few days, Uncle Sasuke did not insist on leaving immediately.
Boruto couldn't help but wail. He could already imagine what kind of hell awaited him in the next three days.
And the facts proved that Boruto's premonition was correct.
In the next few days, Boruto's game time was all canceled.
Naruto used Chakra to link and frantically instill knowledge of mathematics, physics, biology, chemistry, and philosophical political methodology from elementary school to university into his brain.
Each time he instilled something, he would ask Boruto to repeat it all over again to deepen his memory.
He wanted to not learn, but whenever Boruto had a lazy thought, he would be greeted by Naruto's Rod of Love. In the end, Boruto reluctantly memorized all the knowledge that Naruto stuffed into him.
As for understanding, that would be a matter for the future.
While educating Boruto, Naruto was not idle. He divided a Shadow Clone to take care of Uncle Sasuke's body, and by the way, he discussed with him about Sasuke and Itachi in this world.
On the other side, Naruto began to study the turtle he took from Uncle Sasuke. After opening the turtle shell, he began to memorize the complex structure inside.
Although he couldn't understand the meaning of these structures for the time being, he would memorize them first. This method of crossing the world is rare, and if he misses this opportunity, he doesn't know how long it will take to encounter it next time.
While one Shadow Clone began researching the space-time machine, another took out Urashiki's corpse and used a Secret Technique to read information from the corpse's brain.
This Secret Technique wasn't too difficult; Kakashi and Jiraiya had taught him this kind of Ninjutsu.
Although Urashiki had been struck by Little Sasuke's Sebun'arōbukku, obliterating his soul, his brain was perfectly preserved. Although there was a complex, unknown principle protecting it, it couldn't stop Naruto.
Although he didn't fully understand the technique protecting Urashiki's brain, the principle remained the same.
Relying on the Uzumaki Clan's years of accumulation and the vast knowledge of Sealing Techniques he learned from Uncle Sasuke's Sage of Six Paths Techniques, Naruto began to slowly but surely crack the technique in Urashiki's brain.
According to the progress, it would take about two days to break it open.
Spending two days reverse-engineering a technique that protects the brain and obtaining the massive amount of valuable knowledge stored within it was worth it.
When Little Sasuke woke up, he originally planned to send Uncle Sasuke and Boruto away with Naruto.
However, in the end, Naruto persuaded them to stay, asking them to leave in three days.
Little Sasuke glanced at Uncle Sasuke, thought for a moment, and a mischievous smile appeared on his face. While he went to train, he sent a Shadow Clone running towards Yanbo Town.
At this moment, Jiraiya had already used Reverse Summoning Technique to go to Mount Myōboku, the Toad Sage Land, to refine Sage Techniques.
As for Tsunade, she was taking Sakura and Shizune to find Naruto's Shadow Clone and have them take her to Orochimaru.
Amidst Tsunade's confused expression, Little Sasuke dismissed Shizune and Sakura, stopping her just as she was about to leave.
"Uchiha brat, what do you want from me?" Tsunade asked, her expression unfriendly at being delayed.
"I've long heard that Sister Tsunade is not only beautiful as a flower, with an outstanding figure, kind-hearted, gentle, and generous, but also a world-renowned medical expert, saving countless lives and proficient in all kinds of pharmacology."
"So, I'm taking the liberty of coming here today because I really have something to ask of you."
Sasuke, having been taught by Naruto, had become much more slick recently. Upon seeing Tsunade, he immediately showered her with flattery without changing his expression.
Flattery will get you everywhere.
Tsunade's expression immediately relaxed, a smile appearing on her face as she said with interest, "Not bad, young man. What do you want from me? Just say it. If it's not too much, I'll agree."
Naruto was right, no matter how old a woman is, calling her 'sister' is always the right thing to do.
Sasuke muttered to himself and began to tell Tsunade his intentions. As Tsunade listened, her expression became strange, and then she became furious.
Just as she was about to explode, Sasuke pulled out a bankbook as if by magic and handed it over.
Tsunade's expression immediately became amiable
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