After Hiruko agreed to cooperate, Asuka began researching the progress of the Ghost Bud Technique together with him.
With Hiruko explaining its principles and Asuka personally observing the experiments, he quickly gained a solid understanding of the technique.
At its core, the Ghost Bud Technique forcibly plundered the Bloodline Limits of others, deconstructed them, and integrated them into the user's own meridian system.
However, two major prerequisites had to be met.
First, the user needed an extremely powerful body to withstand the violent energy backlash during fusion.
Second, the user had to gather the three seals—Heaven, Earth, and Human.
The Heaven Seal required the power of the stars to guide energy.
The Earth Seal required soil from an area of extreme Yin to temper the body.
The Human Seal required devouring a living ninja with a complete Bloodline Limit.
But the process of collecting these seals was slow, and the margin for error during fusion was extremely small. Even the slightest imbalance in Chakra could result in fatal backlash.
This fell short of Asuka's expectations.
So, he decided to personally refine and improve the technique.
---
In the days that followed, Asuka completely immersed himself in research.
He studied Hiruko's experimental notes in detail and actively participated in multiple small-scale human experiments.
At first, Hiruko resisted his involvement.
But after witnessing Asuka's overwhelming analytical ability, that resistance gradually faded.
Once the experiments began, however, the two often clashed.
Their differing ideas led to heated arguments, voices raised, faces flushed with frustration. Yet Asuka never used his strength to suppress Hiruko, and Hiruko, in turn, forgot his weaker position during these debates.
They argued like equals—fiercely, relentlessly.
More than half a month passed in the blink of an eye.
---
It wasn't until one day, while organizing experimental data, that a familiar face suddenly flashed through Asuka's mind—
Uchiha Madara.
Only then did he remember the unfinished "deal."
Rubbing his temples, he glanced at Hiruko, who was still deeply absorbed in research.
"I'm heading out for a bit," Asuka said casually. "Verify the data based on what I marked last night."
Without waiting for a reply—
He vanished.
---
When he reappeared, he was already near the underground cave.
Before even entering, he heard loud shouting from inside.
Obito.
Asuka couldn't help but shake his head slightly.
The kid really was too much like Naruto—dead last, reckless, loud, and hopelessly optimistic.
If not for being chosen by Madara, he might have returned to Konoha and lived a simple life with Kakashi and Rin, just as he dreamed.
But fate had already shifted.
From the moment he was crushed beneath that rock, his path had been sealed.
Asuka wasn't interested in changing destiny entirely.
But making small adjustments?
That, he didn't mind.
---
He stepped into the cave.
The moment he entered, Uchiha Madara opened his eyes and fixed him with a sharp gaze.
Asuka waved casually.
"Yo, Madara. I'm back. Made up your mind yet?"
Madara said nothing at first, simply staring at him.
Meanwhile, Asuka turned his attention to the stunned Obito.
"Kid, you're awake. How are you feeling?"
"P-pretty good…" Obito stammered.
Then he immediately hid behind White Zetsu.
He had witnessed part of Asuka's earlier confrontation with Madara—and it had left a deep impression.
Seeing him again now, fear instinctively took over.
---
Finally, Madara spoke.
"I agree."
A pragmatic decision.
He understood clearly—opposing Asuka now would only introduce uncertainty into the Eye of the Moon Plan.
Stability came first.
Once he revived and regained his full power, everything else could be handled later.
---
Asuka smiled.
"Smart choice."
"As a show of sincerity, I brought you a gift."
He glanced toward Obito.
"Hey, you. Stop hiding. Come here."
Obito hesitated, then slowly shuffled forward like someone walking to his execution.
"Don't look so miserable. Lift your head. Open your mouth."
Confused but obedient, Obito complied.
The moment he did—
Asuka lightly cut his fingertip.
A drop of golden blood fell directly into Obito's mouth.
---
Instantly, warmth spread through his body.
Then came a strange tingling sensation from his injured side.
Before he could react—
His wounds began to heal.
Skin regenerated.
Muscles repaired.
The crushed, mangled flesh restored itself at a visible speed.
Within moments, the injury was completely gone—without even a scar.
---
This was the power Asuka had obtained from the Angel mutant ability.
Its core function—
Healing through blood.
Even fatal injuries could be reversed, as long as life remained.
---
Obito froze.
Then slowly touched his body.
Again.
And again.
"…Wow…"
His eyes lit up like a child discovering something magical.
---
Madara's expression subtly shifted.
This mysterious man—
Intangibility.
Energy absorption.
Space-time techniques.
And now… extreme regeneration.
Each ability deepened his wariness.
---
"Alright, stop touching it," Asuka said. "It's fully healed."
"Though… if your body hadn't been completely crushed, I could've restored everything."
"Sugoi!" Obito exclaimed, eyes shining. "Big brother, you're amazing!"
"Yeah, yeah. Wipe your drool first."
Asuka waved it off.
"From now on, I'll be training you. Got it?"
---
Obito froze.
"…What?"
"I—I want to go back to Konoha—"
"Back to Konoha?" Asuka raised an eyebrow.
"I think you mean going back to see that girl… Rin, right?"
"Wha—?!"
Obito's face turned bright red.
"I—I'm not! I just want to check on things!"
His voice grew weaker with every word, his eyes darting away.
---
The atmosphere shifted.
The tension dissolved.
White Zetsu snickered quietly.
Even Madara said nothing.
---
Looking at Obito's flustered reaction, Asuka smiled faintly.
Some things—
A teenager could never hide.
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