With her sapphire-like clear eyes, Aoi Kanzaki stared firmly at the problematic children in the room.
"Everyone, please rest quietly. Except for Mr. Tanjiro, all of you are seriously injured. If you don't recover properly and end up with permanent aftereffects, don't say I didn't warn you!"
Hearing the word aftereffects, Zenitsu Agatsuma shivered and immediately lay down obediently.
As for Tanjiro, he had been behaving well from the start.
After scolding the patients, Aoi suddenly remembered that Xia Feng was still standing nearby.
Her face turned red as she quickly looked at him.
"Um… Mr. Xia Feng, I was just…"
Xia Feng smiled.
"With someone as diligent and serious as Aoi here, Butterfly Estate really benefits a lot."
"I'm not exaggerating—honestly, I think your work contributions here are even higher than Shinobu's."
Aoi's little face instantly flushed red.
She waved her hands frantically.
"How could that be! How could I compare to Lady Shinobu!"
Then she lowered her head shyly.
"But… I'm really happy to hear you say that, Mr. Xia Feng!"
At that moment, Kiyo, Sumi, and Naho ran over as well.
"Hey! That's unfair!"
"Mr. Xia Feng should praise us too!"
Xia Feng looked at them for a moment.
Then he smiled.
"With you three around, Butterfly Estate is never quiet."
Hearing that, the three little girls immediately cheered.
"The estate isn't quiet because of us!"
"Mr. Xia Feng praised us!"
Watching their backs as they ran off happily, Aoi couldn't help showing veins on her forehead.
"These three idiots… can't they even tell good praise from sarcasm?!"
She said goodbye to Xia Feng with a helpless smile and hurried after the girls.
Xia Feng walked over to Tanjiro's bed.
Next to it was Nezuko's box.
However, Nezuko wasn't inside right now.
She had a separate ward specially designed to block sunlight, where she was currently sleeping peacefully.
Xia Feng pulled over a chair and sat down.
He told Tanjiro about the upcoming mission to investigate the Mugen Train.
When Tanjiro heard he would be participating in such an important mission, he was both surprised and excited.
"I'll do my best, Mr. Xia Feng!"
He straightened his back and declared.
On the neighboring bed, Zenitsu watched the scene with despair on his face.
"We all joined the Corps at the same time… so why is the gap between us so huge?!"
Xia Feng chuckled.
"Zenitsu, your compatibility with Thunder Breathing is actually genius-level."
"As long as you're willing to work hard, reaching Hashira-level strength is entirely possible."
"Compared to you, Tanjiro's path is actually harder."
"Because the sword style he's cultivating is far more difficult than yours, and improving with it takes much more effort."
Zenitsu blinked.
"Isn't Tanjiro training Water Breathing? Shouldn't that be about as difficult as Thunder Breathing?"
Xia Feng simply shrugged and didn't elaborate.
He turned his head to look outside the window.
The warm afternoon sunlight poured into the courtyard of Butterfly Estate.
Xia Feng narrowed his eyes.
Then he used the gold-tier reward he had obtained earlier.
[Drawing…]
[Draw successful!]
[Congratulations! You have obtained the golden ability: "Bajiquan Human Destruction Technique."]
[Bajiquan Human Destruction Technique: Originally a martial art used to strengthen body and spirit. However, after a certain user repeatedly fought in bloody battles, it evolved into a pure killing technique.]
Xia Feng: "..."
Although the system didn't explicitly state who modified this martial art—
He had a pretty good guess.
Most likely it was Kotomine Kirei.
Kotomine Kirei was a Bajiquan master.
During his time as an executor, he had turned Bajiquan into a terrifying killing technique.
With just the wind from his punches, an ordinary person could die instantly.
As the system's voice faded, a massive amount of knowledge flooded Xia Feng's mind.
After quite some time, he finally finished absorbing everything.
Organizing the information in his head, Xia Feng was astonished.
As expected of Kotomine Kirei—
This killing technique was ridiculously powerful.
For a moment, Xia Feng even thought about abandoning swordsmanship and using this martial art for combat instead.
Of course, that was an exaggeration.
But it still showed how terrifying this martial art truly was.
Killing Bajiquan, combined with his previous abilities like Advanced Physical Enhancement, Enhanced Hearing, and others…
Xia Feng suddenly realized—
He was starting to resemble Kotomine Kirei himself.
He couldn't help laughing awkwardly.
He clenched his fist.
Even though he had only gained a martial art technique, he could feel his strength had increased significantly.
This was the difference between knowing how to use one's power and not knowing how to use it.
The advanced swordsmanship he obtained earlier also had a similar effect—
But it mainly enhanced instant explosive attacks.
The benefits of Killing Bajiquan were far more comprehensive.
Tanjiro blinked in surprise.
He suddenly felt that Xia Feng's aura had changed.
In just an instant—
It became deeper and more powerful than before.
What just happened?
Xia Feng exhaled slowly.
Then he looked at Tanjiro.
"You're not badly injured, right? Rest well today."
"Starting tomorrow, your training begins."
"After all, you're a Hashira candidate I personally recommended. You can't embarrass me."
Tanjiro nodded immediately.
"Yes, Mr. Xia Feng!"
Then he hesitated before asking,
"Um… what kind of training will it be?"
Xia Feng smiled.
"Total Concentration… Constant."
"The content is simple."
"You must maintain Total Concentration Breathing all the time—"
"Even while sleeping."
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