When the Yin Seal Seal was completed, Kirito instantly felt that the pressure on his body that had been preventing him from using his chakra at full power normally due to maintaining the Yin Seal Seal instantly disappeared, and the chakra in his body actually received a wave of surge.
This was due to the accumulated chakra in the Yin Seal, which began to output chakra at a low power to provide feedback to Kirito as the master, in effect boosting the normal amount of chakra in his body.
The feedback from a Yin Seal that had amassed Tailed Beast level chakra was undoubtedly amazing, and even if it was just a little bit, Kirito felt that his chakra had been boosted by two or three levels in disguise, reaching Elite Chunin level chakra amounts.
For a moment, Kirito felt filled with power.
The Yin Seal was a secret art developed by the Uzumaki clan, and its main function was only to save chakra, not the Strength of the Hundred Seal developed by Tsunade in the later stages on the basis of the Yin Seal, and thus did not have the ability to instantly heal, strengthen attacks, increase speed, etc., but it already possessed the function of residing in the youthfulness of the face, enhancing the bodily functions, and allowing the bodily functions to remain in full bloom.
That was all the functions of the Yin Seal that Mito had taught him.
Kirito estimated that the Strength of the Hundred Seal developed by Tsunade also needed to have some relationship with her family's secret art of Inhuman Raw Strength as well as Mystical Palm Technique, and that the other party had most likely blended the Yin Seal, the Inhuman Raw Strength, and Mystical Palm Technique together to make the Strength of the Hundred Seal have the efficacy of all three.
"Yin Seal, it's amazing that this brat has mastered this sealing technique first, what a marvelous brat."
Tsunade looked at the blue diamond-shaped seal on Kirito's forehead and marveled in her heart.
The difficulty of Yin seal cultivation is mainly in having extremely strong chakra manipulation power, this point, she already has, at present, it is just a matter of supplementing the knowledge of sealing art.
Ever since she stepped into the battlefield and realized that the amount of chakra she used to be proud of was far from enough to heal all of her teammates, she remembered this sealing technique that could provide a large amount of chakra, and had been wanting to train it successfully, but since she had been fighting all of the time, coupled with using Mystical Palm Technique to heal the injuries of her comrades every day, she simply didn't have the time or enough chakra to train in the Yin Sealing Seal.
This time she came back to Konoha, and it was with the intention of learning this sealing technique.
She just didn't realize that before she could learn it, a junior brat had learned it before her.
However, she was not jealous, there was only appreciation and happiness, because her grandmother's sealing art legacy had a successor.
The fact that the later generations of Konoha had properly passed down the knowledge of their ancestors, just like the Will of Fire, which was a thing to be very happy about.
"Mito-sensei, it's already done, stop it."
Kirito said immediately when he realized that he had already succeeded in cultivating the Yin Seal, but Mito did not discontinue the chakra transfer.
"Is it already successful? Then let's cultivate another one, but this one won't be able to be as big as the one before."
Mito said with a slight smile, looking at Kirito with bright eyes.
Kirito's heart shook when he heard Mito's words, and as he looked into Mito's eyes, he instantly had the feeling that his entire body's secrets were being seen through.
Before he could say anything, Mito said to the others in the room, "All of you go out, let me have some time alone with Kirito."
The others heard Mito's words, Momo wanted to say something, but he was silenced by Mito's glare and honestly went out.
Momo, the Hokage advisor, was still like this, what else could the others say, they obediently went out and waited outside.
Nawaki still wanted to struggle a bit, only to be carried out with one hand by Tsunade.
When the others left the room, Mito casually laid down a sealing barrier that screened the outside world's perception.
When Kirito saw this, he smiled bitterly, "Sensei, when did you find out."
In the next moment, a head identical to Kirito's grew out of Kirito's shoulder, and it was none other than the White Zetsu clone.
"Hmph, I'm your teacher, that little secret of yours that you want to hide from me is still a hundred years away."
Mito glanced at the head on her shoulder and said smugly, but did not ask Kirito about the White Zetsu clone.
She actually did not know what the White Zetsu clone was, she only relied on the ability to perceive good and evil brought to her by the Nine Tails to vaguely discover that there was another person inside Kirito, and she did not expect it to be true, this disciple of hers was even more complicated than she had imagined.
This is good, Konoha and Senju have him to protect, no matter how bad the situation is in the future, it won't be that bad.
She is clear about the character of her disciple. He is a master who will never suffer losses. Sandaime and Danzo have better not to provoke him, or else there will definitely not be any good results.
"Teacher, this is my ..."
Mito did not ask about the origin of the White Zetsu clone, but Kirito did not intend to continue to hide this benefactor who was so kind to him, and wanted to explain the origin of the White Zetsu clone.
Since the White Zetsu clone had been discovered, there was actually nothing to hide.
He believed that Mito wouldn't tell anyone else the secret of the White Zetsu clone, otherwise she wouldn't have let anyone else out just now.
"Alright, I'm dying, I don't want to hear that little secret of yours, just know it yourself, just speed up a bit, I have a little less chakra, and that little fox in my body is getting restless again, it's making my ears a little tired right now."
Mito shook his head and said, not intending to listen to Kirito's explanation.
It was natural that the fewer people knew such things as secrets, the better, and she didn't have a penchant for prying into other people's secrets, she just needed to know that Kirito wouldn't harm her or hurt the people in the village.
"Then let's forget about channeling chakra, you're so weak right now, you won't be able to suppress the Nine Tails if you lack enough chakra again."
Kirito hurriedly persuaded when he heard that the Nine Tails were going to mess up again.
"Rest assured, I have properly educated that little fox when I just slept over, the reason why he would break free from the seal before is that the previous seal was a bit long, and was partially eroded by him secretly using the Nine Tail Chakra, I have now reattached new chains to it, and for the time being, no matter how much he struggles, he won't be able to come out again."
Mito sniffed and said confidently.
At this moment, her elegance as a top sealing art ninja was revealed.
"Sensei is truly the most powerful sealing art ninja in the world."
Kirito flattered decisively.
Mito accepted it openly, with a happy expression on her face, then said with a stern face, "Alright, stop flattering, quickly build up your chakra to cultivate the Yin Seal, I'm going to sleep for a little while longer later, I'm slightly tired."
Kirito immediately collected his smile and once again forced back his tears and closed his eyes before concentrating on assisting the White Zetsu clone in cultivating the Yin Seal.
Having had the process of successfully cultivating the Yin Seal once, it was naturally a breeze to do so again.
He quickly opened up a pool of chakra constructed from the Yin Seal on the White Zetsu clone's body, which was much smaller than Kirito's main body's.
And Mito's amount of chakra really wasn't something to sneeze at, it was definitely at the Tailed Beast level, plus she herself had a Yin Seal, which had the same Tailed Beast level of chakra built up in it.
As long as Kirito stops being greedy and creates a Yin Seal Chakra pool that can accumulate tailed beast-level chakra, and then quickly cultivates a Yin Seal for Kirito's White Zetsu clone, it's not a joke, and there's enough confidence to do it.
In about half an hour, a blue Yin Seal Seal likewise appeared in the center of the White Zetsu clone's eyebrow.
"Kirito, Kushina is in your hands, protect this child on my behalf, our Konoha owes her too much."
Mito said with some fatigue, then slowly closed her eyes, using the last of her mental energy to concentrate on suppressing the Nine Tails within her body.
"Yes, Sensei, you can rest assured and leave it to me, I will seal the Nine Tails safely inside Kushina's body, and I will be Kushina's pillar of support, guarding her all the way until the moment I die."
Kirito carefully helped Mito lie down, covered her with a blanket, and solemnly promised.
If it was the case that the Yin Seal hadn't been successfully cultivated, he definitely didn't have the backbone to make such a promise, but it was different now, his Yin Seal had been successfully cultivated and there was another Yin Seal on the White Zetsu clone.
With the chakra built up from the double Yin Seal in place, he was now confident that he could use his modified Adamantine Sealing Chain alone to temporarily suppress the Nine Tails.
Sage Mode was also within reach.
This was the final gift from his beloved teacher.