Kakashi told Tsunade about this matter. Tsunade did not object, and approved Kakashi's application to leave the village.

  Kakashi made a little preparation and left Konoha. In the forest outside Konoha, he used the Hiraishin no Jutsu (Flying Thunder God Technique).

  A spatial fluctuation appeared in the forest for an instant, and then Kakashi disappeared.

  Withered Town, a small town on the border of the Land of Fire.

  There is not much prosperity or excessive poverty here. It is just a small town that is inconspicuous in the Land of Fire.

  But today, in this ordinary town, there are a few great figures in the Shinobi World.

  In the hotel, Kakashi's figure quietly emerged.

  Kakashi stood still, and saw a man with long white hair in front of him.

  "Jiraiya-sama." Kakashi said respectfully.

  Jiraiya smiled and said: "Kakashi, you come so fast. Just like Minato."

  "Thanks for the praise, Jiraiya-sama. By the way, where's Naruto?" Kakashi looked around, but he did not see Naruto.

  "Naruto probably is still asleep at this time. Yesterday's practice was a bit tougher, so there is nothing wrong with sleeping longer," Jiraiya said.

  "So it's like that. Jiraiya-sama, you said in the letter that you plan to remove Naruto's seal?" Kakashi asked.

  "To be precise, it's not remove, but to open it slightly and let Naruto try to control the power of Kyuubi. Kakashi, have you ever entered Naruto's body before and talked to Kyuubi?" Jiraiya asked.

  Kakashi did not deny it, and said directly: "Yes, when Naruto was a child, I used the power of Sharingan to enter the Kyuubi's seal and talk with the Kyuubi. After that, the Kyuubi control his strength, and did not interfere with Naruto's training."

  "No wonder that even after being sealed for so many years, I didn't feel Kyuubi's Chakra leaking from Naruto. After all, it's been a long time since he's sealed in Naruto, so the seal should be weakened. I'm really curious though, how did you make Kyuubi obedient?" Jiraiya looked at Kakashi curiously.

  Kakashi smiled but didn't answer.

  Seeing Kakashi didn't want to answer, Jiraiya sighed and said, "Forget it, it seems that you don't intent to answer it."

  "Thank you for your understanding, Jiraiya-sama."

  "You brat, I don't understand you more and more." Jiraiya sighed. At this moment, he had the illusion that he was old.

  "Jiraiya, you meant that you want to make Naruto to become a perfect Jinchūriki like Killer B?" Kakashi said.

  "Yes, this is what Minato wanted. Minato used the Dead Demon Consuming Seal to divide the Kyuubi into two parts, one yin and one yang. Then, the Yang part of Kyuubi was put into Naruto's body with the Eight Trigrams Sealing Style, while the Yin part of Kyuubi entered the belly the Shinigami with Minato. Before Minato died, he gave the key to the Naruto's seal to the Toad Race, and asked the Toad Race to pass it to me, hoping that I would help Naruto to fully grasp the power of the Kyuubi."

  Hearing this, Kakashi frowned and said: "I think it's still too early. Naruto is just 15 years old, and he didn't necessarily have the strength to control the Kyuubi so it is too risky."

  "No, we should give it a try. In the past two years, Naruto's strength has improved a lot. If Naruto can control the Kyuubi's strength, then Akatsuki's threat to Naruto will be reduced to almost zero. Even if it fails, both of us are here. I believe that even if Naruto couldn't control it and rampage, we can stop it without any trouble" Jiraiya said.

  "This…maybe we can give it a try, but we only need to open the seal by a little bit. If it's too much, there may be some trouble," Kakashi said.

  "Hahaha, rest assured, I understand that. It's okay to open it up to Four Tails' strength and let Naruto get used to it. If it's too much, it may be troublesome," Jiraiya said.

  "Since that is the case, I have no objection."

  "Good!"

  Jiraiya said, and with a wave of his right hand, a creature like a scroll came out of him.

  "This is…" Kakashi was surprised.

  "This is Gerotora, Mount Myōboku's scroll toad, who closely guards whatever secret has been written on its scroll-abdomen. Back then, Minato handed over the key to the Kyuubi's seal to him," Jiraiya explained.

  Gerotora exclaimed, "Jiraiya, did you call me?"

  "Yeah."

  "Why did you call me?" Gerotora said impatiently.

  "I want Naruto to try to master the power of Kyuubi, so I need your help."

  "You want to open the Kyuubi's seal?" Gerotora asked.

  "Yes, I want to give it a try. If it succeeds, we can proceed to the next step," Jiraiya said.

  "Jiraiya, this is a very dangerous thing. If it is not done properly, even you will be seriously injured." Gerotora said solemnly.

  Hearing this, Jiraiya just laughed and then said: "Hahaha, don't worry, I have my own measures."

  "Well, since you want to do this, then I naturally won't argue. When the time comes, you can just call me out."

  After Gerotora finished speaking, he got into Jiraiya's body again.

  After signing the contract, Gerotora will enter the contractor's body until the contractor dies or the contract is reached.

  Therefore, Gerotora have always been inside Jiraiya's body.

  And he is also the key for Naruto to fully control the power of Kyuubi.

  "Kakashi, everything is ready now. We just need to wait for Naruto to wake up." Jiraiya said with a smile.

  "Yes, Jiraiya-sama."

  "By the way, Kakashi, where did you go in the past two years? If I didn't learn from Tsunade that you have returned, I would do this myself," Jiraiya asked.

  "I went to a place that shouldn't have been visited, and met some people who shouldn't have been met," Kakashi said with emotion.

  "Hah, you sure are hard to understand. Forget it, let's just assume I didn't ask."

  Kakashi smiled faintly, and didn't explain much. After all, going back to the past is a thing that shouldn't be talked about.

  At this time, the door was pushed open.

  A yellow-haired teenager in a toad pajama walked in with a sleepy eye.

  "Ero-Sennin, why didn't you call me up? It's already noon now. If I delay my training, I will be surpassed by Sasuke. Kakashi-sensei would be disappointed."

  The yellow-haired teenager mumbled and accidentally bumped into Kakashi.

  "Ouch!"

  The yellow-haired teenager looked like he was not awake. When he suddenly hit something, he fell directly to the ground.

  "Naruto, you have grown taller, but why hasn't this problem been corrected yet?"

  The familiar voice rang in Naruto's ears, and Naruto immediately woke up.

  He opens his eyes and looks at the person in front of him.

  Naruto's expression went from shock to surprise, and he immediately leaped into Kakashi's body.

  "Kakashi-sensei!"