At a little past three in the afternoon, Tsunade walked out of the casino.
"Damn it! How is my luck this bad?"
"And 1,000,000 ryō really isn't enough to lose. It didn't even last two hours before it was all gone. I should've demanded more from Danzo back then. What rotten luck!"
Grumbling and cursing the whole way, she made her way to Kushina's house.
Then she told Uchiha Sora everything in detail about the negotiations over the medical talismans in the Hokage's office.
"I just hope you don't hold anything against me. This is already the best condition I could get for you."
At the end, Tsunade added that.
"I understand. This is already enough."
Uchiha Sora nodded without concern.
"I already expected something like this from the moment I decided to develop it."
"No village would just sit back and allow something with this level of strategic significance to remain solely in the hands of an individual, beyond its reach."
"Being able to get one chance to learn a technique from the Scroll of Seals is already enough to satisfy me."
After all, he already had plenty of ways to make money.
If he held onto the medical talisman technology himself, aside from giving the Uchiha a little special treatment and earning himself some money, the drawbacks would outweigh the benefits.
It would only draw even more hostility and suppression toward both himself and the Uchiha clan.
It was better to hand it over to the village in exchange for benefits like this.
Just so happened that he was quite interested in the Flying Thunder God Technique recorded in the Scroll of Seals.
He could use this rare opportunity to obtain it.
Otherwise, with his identity as an Uchiha, getting access to that technique would be nearly impossible.
Truthfully, when he first came up with the idea of creating medical talismans, it had only been a whim.
But after seriously considering it, he realized the process itself would bring him many gains.
For example, Tsunade's deeper approval.
For example, the sealing techniques he was learning now.
For example, the opportunity to get close to Kushina and forge a friendship with her.
And now, the Flying Thunder God Technique that was practically already in his hands.
The gains were plentiful.
On top of that, the process of creating medical talismans would also lay a solid foundation for him to create other ninjutsu talismans in the future.
Though as for those future talisman-making methods, he had no intention of handing them over.
"You've been wronged. Since I'm in a good mood today, and since you're already learning sealing techniques, I'll teach you one more special sealing technique."
Tsunade reached out and rubbed Uchiha Sora's head.
Before he could answer, Kushina, standing nearby, tilted her head and guessed, "A sealing technique? What sealing technique is there that I can't teach? Don't tell me it's the Yin Seal?"
Tsunade snapped her fingers.
"That's right. The Yin Seal."
"Oh?"
Hearing that, Uchiha Sora immediately looked toward the mark on Tsunade's forehead.
"You mean the seal on your forehead, Big Sister Tsunade?"
Naturally, he knew about the Yin Seal, but that was information from his previous life. At this moment, he still had to put on a show.
"That's right."
Tsunade touched the seal on her forehead and nodded.
Then she took out a scroll and handed it to Uchiha Sora.
"Here. It's all inside. Read through it first, and if there's anything you don't understand, ask me immediately."
"I know your comprehension is monstrous, but this technique is dangerous to cultivate. There's absolutely no room for carelessness, so don't mess around."
After all, it involved the spiritual sea of consciousness in the forehead. Tsunade could not afford not to be cautious.
"Tch."
At that point, Kushina puffed out her cheeks.
"I have a scroll of that sealing technique too."
"But you can't use it."
Tsunade immediately poked Kushina's puffed-up cheek and teased her with a smile.
Kushina instantly deflated and said irritably, "Sorry for not being able to use it, then. It's only because I'm still too young, my spiritual power isn't strong enough yet, and my will isn't firm enough."
"And besides, I don't need it for now anyway."
She wanted to learn the Yin Seal as early as possible too.
As for her, she didn't care much about the Yin Seal's chakra storage function. As an Uzumaki, her chakra reserves were already enormous.
What she cared about more was the fact that the Yin Seal could, to some extent, preserve youth forever.
"But Sora is only three. Are you sure he can learn this technique already?"
Kushina asked with some concern.
"Relax."
Tsunade waved her hand dismissively.
"If he can't learn it, then no one in this world can."
"Don't be fooled by his age. This brat's spiritual power is ridiculously strong. It's even stronger than mine."
Truthfully, Tsunade herself had always been curious about why Sora's spiritual power was so strong.
Both in quality and in quantity.
But she had never asked.
Everyone had their own secrets.
"Really?"
Hearing that, Kushina looked at Uchiha Sora in surprise, then said enviously, "That's nice…"
"Hehe."
Uchiha Sora smiled knowingly and comforted her at once.
"It's fine. Once I've learned it, I'll try to improve it and see whether I can reduce the difficulty of cultivating it."
In his eyes, that was by no means impossible.
"Huh? Really? That can be done?"
Kushina asked in delight.
Tsunade also turned to look at him curiously.
"Seriously? You're sure you can do it?"
"It shouldn't be a problem. Just give me some time. Let me finish learning sealing techniques first."
Uchiha Sora shrugged.
Truthfully, he was also extremely interested in the Yin Seal.
He had been thinking for quite a while about how to get it from Tsunade.
Unexpectedly, it had gone this smoothly.
So throwing out medical talismans as bait had indeed been the right move.
As for the Yin Seal, the anime in his previous life had not described it in much detail.
But Uchiha Sora had his own guesses about it.
He immediately undid the seal on the scroll in his hand and opened it to read.
With his perfect memory and powerful spiritual power, it did not take long before he finished reading it.
And he had already gained a considerable degree of understanding.
So that's how it is. This involves the spiritual sea of consciousness, in other words, the Upper Dantian. It's essentially a space-sealing technique that opens the spiritual sea of consciousness by taking a different path.
The one who created this sealing technique was truly a genius.
Uchiha Sora could not help but sigh inwardly in admiration.
Since it involved the spiritual sea of consciousness, he had no intention of cultivating it rashly.
Instead, he planned to wait until after he had finished learning all the sealing techniques from Kushina before returning to study and research this technique properly.
He also intended to use this technique as a foundation for further deduction and expansion. At the same time, by combining it with his Spirit-Refining Method, he would try to deduce a truly complete method for opening the Upper Dantian.
Otherwise, it would be too much of a waste of his talent and monstrous comprehension.
Anything involving the spiritual sea of consciousness demanded the utmost caution.
"So? Can you understand it? Any problems?"
Tsunade asked curiously.
She also wanted to see whether this technique could finally stump Uchiha Sora.
"It's manageable. It involves a great deal of deep and complicated sealing knowledge. I plan to finish learning sealing techniques first, then come back to study and research it."
Uchiha Sora replied immediately.
"I see. Fine, then."
Tsunade nodded in understanding.
"This technique is dangerous to cultivate, so being cautious is the right choice."
"You two keep learning sealing techniques. Big Sister is going to go rest first. What a tiring day…"
As she spoke, she stood up and stretched lazily, her upper body rising and falling in an exaggerated curve.
Then she simply left and returned to her own courtyard.