Half a day later—
Still at Kushina's house—
[You deeply comprehended the Sealing Technique: Adamantine Sealing Chains. Gaining profound insight into its secrets, you carried out extensive modifications and created Adamantine Sealing Chains · Modified.]
[Adamantine Sealing Chains · Modified]: A universal version of Adamantine Sealing Chains. It can be learned and used without Uzumaki bloodline, but its power is only fifty percent of the original.
"…Not enough?"
Uchiha Sora frowned slightly at the result. Looking down at the short strand of golden chakra chain emerging from his palm, he muttered,
"As expected, only with the Uzumaki clan's powerful vitality can the full strength and Tailed Beast suppression of Adamantine Sealing Chains be realized."
"Huh?"
Kushina leaned in curiously, staring at the golden chain in his palm with amazement.
"You succeeded? It's weaker than the original? That doesn't seem right. The power you're using doesn't look any weaker than mine."
Uchiha Sora withdrew the chain and smiled.
"That's because my vitality is also extremely strong. What I'm using is essentially the original version, so it shows this level of power."
"But if someone else without Uzumaki bloodline and without my level of vitality used it, the power would drop significantly."
Still—
At least he had broken the limitation that only those with Uzumaki bloodline could learn it.
"That's already incredible."
Kushina shook her head helplessly.
"No one else could even create a universal version of Adamantine Sealing Chains."
"And honestly, your vitality is ridiculously strong. It's not even weaker than mine. Are you sure you're not secretly from the Uzumaki or Senju clans?"
The way Uchiha Sora felt was completely unlike any Uchiha she knew.
In every sense.
She had met plenty of Uchiha at the academy before.
Most of them were arrogant and hard to get along with.
So far, she had only found two exceptions—
Sora and Mikoto.
Uchiha Sora shook his head. He had heard this more than once.
"There's a special reason for that. I'll tell you in the future. I'm definitely not Uzumaki or Senju."
"But once I fully understand the secrets within your blood, it won't be impossible to cultivate an Uzumaki Sage Body through acquired training."
He said this with a smile.
"Then wouldn't you count as part of the Uzumaki clan too? I'll be waiting for that! Hehe!"
Kushina said happily.
The Uzumaki clan was gone.
But if she could create a new Uzumaki clan together with Sora—
That didn't sound so bad at all.
…
Over the next week, Uchiha Sora either stayed at Kushina's house, continuing to study and refine sealing techniques while also working with Tsunade on the next stage of medical talisman development—
Or he remained in his home laboratory, using experimental equipment to analyze Kushina's blood samples.
At the same time, the first batch of medicinal material transactions with the Nara clan and other suppliers had been completed.
Long-term supply agreements for secret medicines had also been established with the Ino–Shika–Cho clans and the Sarutobi clan.
Their main orders consisted of two types of body-tempering pills and high-quality soldier pills.
The demand was substantial.
And today—
The Uchiha clan's secret medicine shop officially opened.
Originally, Uchiha Sora hadn't planned to attend.
But he couldn't refuse his parents' request, and since Mikoto and Kushina also wanted to see the excitement, he ended up going.
"Wow! So many people! It's so lively!"
"And look at how many are buying things! Sora, your family is going to get rich!"
Kushina leaned over the second-floor railing, looking at the bustling crowd below in amazement.
Uchiha Sora simply smiled faintly.
"I'm not interested in money. Whether I earn more or less doesn't matter."
"Eww… Is this what you called 'showing off' before? Hehe!"
Kushina laughed, wrapping an arm around his shoulder in a playful and intimate gesture.
Beside them, Mikoto remained calm.
She had already gotten used to it.
Seeing Kushina and Sora acting close like this had become normal to her.
In her eyes, Sora was far too exceptional to belong to just one person.
Having Kushina by his side… wasn't unacceptable.
"Hm?"
At that moment, Uchiha Sora suddenly felt a strange gaze fall upon him and Kushina.
He turned to look—
And saw a blond-haired, sunny-looking boy staring at them with a somewhat lost expression.
"Minato…"
Uchiha Sora immediately recognized him.
He smiled and gave a small nod in greeting.
Minato was momentarily stunned, then politely nodded back.
After one last glance at Kushina, he lowered his gaze, holding a bottle of soldier pills and a small vial of body-tempering pills, then squeezed through the crowd and left quickly.
So this is your choice, Kushina…
He really is an outstanding person.
It's my own fault. My clumsiness led to misunderstandings… I missed my chance with you.
I hope you'll be happy.
But if he ever treats you badly—I won't let him off.
On his way back, Minato silently made this vow.
At the same time, he resolved to train even harder under his teacher and focus entirely on improving himself.
He understood the cruelty of the shinobi world.
Only strength could ensure that when happiness came, he wouldn't miss it again—
And that he could protect the people he cared about.
…
Three months later—
Inside the underground laboratory of Sora's home—
[Through extensive experimentation and observation, you have uncovered the secrets of the Uzumaki bloodline. By combining elements of your Innate Technique and the principles of your Sharingan cultivation method, you have achieved enlightenment and created the Uzumaki Sage Body Cultivation Method and the Bloodline Ability · Kagura Mind's Eye Cultivation Method.]
[Uzumaki Sage Body Cultivation Method]: Using a trace of Uzumaki blood as a catalyst, one can gradually strengthen bloodline power and enhance vitality through cultivation. Upon completion, the user attains a complete Uzumaki Sage Body, gaining immense life force and extended lifespan.
[Bloodline Ability · Kagura Mind's Eye]: Using a trace of Uzumaki blood as a catalyst, one can gradually awaken Kagura Mind's Eye through cultivation. When practiced alongside the Uzumaki Sage Body method, the effects are enhanced. Those with Uzumaki bloodline can also awaken this ability through this method.
"Haha! It's done!"
Feeling the two fully deduced and perfected techniques in his mind, Uchiha Sora couldn't help but laugh aloud.
"Not easy… Over three months of effort, but it was worth it."
As he absorbed the knowledge, he felt completely satisfied.
Without hesitation, he took out a drop of Kushina's blood, processed it using the special method described in the technique, and swallowed it.
Then—
He sat cross-legged and began circulating the Uzumaki Sage Body Cultivation Method.