Arin carefully reviewed his current combat style.
His main strengths were:
Yin Release, Fire Release, and Nen.
These three formed his core combat power.
Beyond that, he had various buffs and support abilities:
Byakugan, Demon Form, Clone Technique, Transformation Technique, Substitution Technique, Bear Combat Technique, and Brain Enhancement (Naofei).
By now, Brain Enhancement had become a constant passive state.
With it active, he functioned like a precision computer.
If he stacked all buffs—
He could maintain peak output for about half an hour.
During that time—
He could fight at a level comparable to a Kage.
He might not match a Kage's raw destructive power—
But holding his own, even winning, was possible.
At least, that was his estimate.
After all—
He hadn't actually fought a Kage.
Hiruzen and Danzo both claimed to be "busy."
Sakumo was nowhere to be found.
Orochimaru was buried in Root's underground labs.
Tsunade couldn't leave the hospital.
And Jiraiya hadn't returned yet.
With Brain Enhancement, he could calculate the most efficient way to maximize results.
For now—
He decided to upgrade Nen and Fire Release.
[Fire Release (Lv.5) EXP (0/80000)]
[Nen (Lv.5) EXP (0/80000)]
He raised both by two levels.
[Fire Release (Lv.7) EXP (0/320000)]
[Nen (Lv.7) EXP (0/320000)]
That left him with a little over 130,000 experience.
Next—
He upgraded Dragon Slayer Magic by three levels.
This ability primarily enhanced energy resistance and defense—
Which was exactly why he had fused it in the first place.
[Dragon Slayer Magic (Lv.1) EXP (0/5000)]
→
[Dragon Slayer Magic (Lv.4) EXP (0/40000)]
Around 90,000 experience remained.
He decided not to touch it for now—
Saving it as a reserve for emergency upgrades.
"Defense, offense… that's about my limit."
Arin nodded in satisfaction.
As for endurance—
He had over 100,000 essence stored.
Enough to sustain a full day of combat.
"Once I farm some Sunagakure ninja, I can earn quite a bit more."
He smiled faintly.
"Next… Earth Release and Wind Release."
He had quite a few of those techniques—
But learning them now wouldn't help much.
He planned to max them out later and fuse them directly.
His Yin Release remained hidden.
No one knew he was proficient in genjutsu—
And with the Sharingan's support, his illusions were extremely powerful.
At this point—
He had reached his current limit.
Just then—
The front door opened.
Machi walked in, rubbing her shoulder, and sat on the sofa.
Hyuga Natsuna popped out of nowhere and immediately began massaging her shoulders.
…Was Machi his summon, and Natsuna Machi's summon?
"Off work early today?" Arin asked curiously.
"What do you think?" Machi replied expressionlessly.
She had a task—
To monitor Arin.
If he was off work—
She naturally returned to keep watch.
"You look tired. Perfect timing—come with me on a trip," Arin said.
This time—
He wasn't planning to go alone.
"A trip!?" Natsuna's eyes lit up. "I want to go too!!"
"Go play somewhere else. We've got serious business," Arin waved her off.
"What serious business? Why can Machi go but not me?!" Natsuna puffed her cheeks angrily.
"Kill a Kage," Arin said coldly.
"…Never mind. You two go ahead. I'll cook."
Natsuna immediately retreated to the kitchen.
This was way above her pay grade.
Machi remained calm.
"You're sure you want me with you? The people in your world are strong. I don't think I can help much."
(And things like warming the bed? Absolutely not.)
Arin, unaware of her inner thoughts, replied:
"Perfect. I was planning to improve your strength anyway. You've taken quite a few techniques from Root, right?"
Machi turned her head away.
Since arriving in this world, she had felt uneasy.
There were too many powerful individuals here—
Even national-level threats.
She had tried to grow stronger—
But Nen and chakra were fundamentally different.
They didn't naturally integrate.
She had secretly obtained chakra training methods and ninjutsu—
But with little success.
Arin extended his hand.
"Take this. It should awaken chakra within you."
A blue seed floated above his palm.
If Nagato and the others could awaken Nen through him—
Then Machi should be able to awaken chakra the same way.
Machi didn't hesitate.
She grabbed the seed.
Blue aura erupted from her body.
"So this is your world's power?"
She raised her hand.
Aside from the aura turning blue—
Control felt just as natural.
"No. This is a fusion of Nen and chakra," Arin said plainly.
"It combines Nen's traits with chakra's nature. In a way, you've already surpassed most ninja."
Machi quickly reined in her energy.
"How much time do I have?"
"Seven days," Arin replied. "Show me how much stronger you can get."
"This mission is dangerous. If you die… I'm not sure I can summon you again."
"Alright."
Her expression didn't change.
People from Meteor City didn't fear death.
…
The next morning—
Arin stepped out of his house.
"Morning, Dr. Arin!"
"Have you eaten, Doctor?"
Everyone greeted him warmly.
Since joining Konoha Hospital—
His popularity had skyrocketed.
Known as the "Second Chief Surgeon," he was widely respected.
Arin nodded to them.
Over the past two years—
Not only had he gained goodwill—
His medical ninjutsu had leveled up naturally.
[Medical Ninjutsu (Lv.8) EXP (0/72000)]
He hadn't invested a single point into it—
Yet it reached Level 8 on its own.
If only his other skills could learn from that…
Unfortunately—
They didn't listen.
Annoying.
He looked up at the Hokage Tower ahead.
He was here to request leave.
This time—
He couldn't sneak out.
His incarnation was busy being the Daimyō—
It couldn't replace him.
So—
He had to properly ask Hiruzen for permission.
✨ Bonus Chapter Goals ✨
10 Reviews = 1 Bonus Chapter
100 Power Stones = 1 Bonus Chapter
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