After accompanying Kushina to the Senju compound, he met Mito Senju, also known as Mito Uzumaki.
To be honest, Minato had no intention of stopping Kushina from becoming a Jinchuriki.
The power of the Nine-Tails was immense. In the Fourth Great Ninja War, Naruto, with only half of the Nine-Tails, could contend with several other Tailed Beasts, which showed its strength.
Now that Kushina was going to become friends with the Nine-Tails, Minato felt more at ease with its protection.
That fox was also a tsundere. It looked fierce, but after becoming friends with Naruto, it was unwilling to leave him.
"You must be Minato. Thank you for letting Kushina experience love and for filling her heart," Mito said, looking kindly at Minato. She was very satisfied and relieved that Minato would be Kushina's future husband.
"Grandma, I'm going to tell Minato about it. I don't want to hide it from him," Kushina said to Mito after a moment of hesitation, stating her intentions.
"Silly girl, I knew when you brought Minato here. As your lover, he indeed has the right to know the whole story. Although he is young, I believe in Minato. He will definitely be able to help you."
Mito smiled and pulled Minato and Kushina closer to her.
"Grandma Mito, thank you for your trust. I will definitely protect Nana," Minato said solemnly.
"I believe you can do it," Mito said, stroking Minato's hair.
Next, Mito told Minato about sealing the Nine-Tails and making Kushina a Jinchuriki.
She also mentioned that she had notified her granddaughter, Tsunade, to return and help with the sealing, which would take place in a few days.
"This is the Uzumaki clan's sealing scroll. Minato, little Nana, I am now entrusting it to you," Mito finally said, taking out the Uzumaki clan's sealing scroll and handing it to Minato.
Taking the scroll, Minato slung it onto his back, planning to hide it with a barrier seal when he got back.
"Don't worry, Grandma Mito. I won't let the Uzumaki clan's sealing jutsus be lost."
"Go on. Just remember to treat Nana well in the future."
Minato nodded and left with Kushina.
After walking out of the Senju compound, Minato stopped and looked at Kushina. "Nana, you should spend more time with Grandma Mito these next few days. Once the Nine-Tails is extracted, Grandma Mito's life will probably be on a countdown."
"I know," Kushina nodded sullenly. In fact, Mito's life was already on a countdown. At most, she had ten days to half a month, probably the time it would take for Tsunade to return from the front lines.
"Then you should stay here and accompany Grandma Mito. You don't need to accompany me," Minato said, gently stroking Kushina's hair before heading home.
After returning home, he didn't immediately open the sealing scroll to check the sealing jutsus on it.
On it were the Adamantine Sealing Chains, the Eight Trigrams Sealing Style, the Four Symbols Seal, the Dead Demon Consuming Seal, the Contract Seal, and other advanced Uzumaki clan sealing jutsus.
After looking at them, Minato learned them one by one. In the world of Naruto, sealing jutsu was a unique existence, and it was necessary to learn it.
But this meant Minato had to create another shadow clone to specialize in studying sealing jutsu.
This made his chakra a bit insufficient. It seemed he needed to focus on improving his physique recently. During his sparring sessions with the elite Chunin from the Anbu, he had been rewarded for his physique three times: once with 4%, once with 3%, and the last time with a mere 2%.
Coupled with his continuous training these past few days, his physique development had now reached 99.6%, with only 0.4% remaining.
But even 0.4% was not easy to achieve. Now, a full day of exhausting work only increased his experience by 0.05%, which meant he needed another 8 days.
There was no other way. Obtaining the Sage Body would probably double his chakra. Then he wouldn't have to worry about not having enough chakra. Chakra monster, you know.
Time passed day by day. Recently, Kushina had been constantly accompanying Mito. Every day, she would also spend some time with Minato, pouring out the sorrow in her heart. To watch someone wait for death, what a painful thing.
Fortunately, Mito was open-minded and did not fear death. She was always happy with Kushina, and of course, her grandson, Nawaki Senju.
With such a major event, it was impossible for Nawaki Senju not to know.
As Minato continued to train hard, his physique continued to improve. 99.6%, 99.7%, 99.99%... Finally, with a roar from Minato, his physique reached 100%.
For eight days, he had been training his body with all his might, constantly breaking all kinds of limits.
If it weren't for the system's bonus, which fully recovered him no matter how tired he was the next day, he probably wouldn't have been able to persevere, and his body would have been affected by various hidden injuries in the future.
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