Morning, 7:30 a.m.
Arthur, Yotsuya Miko, Akashiya Moka, Tohru, and Akua Shuzen sat around the table, enjoying breakfast together.
After swallowing a mouthful of food, Arthur spoke up.
"Later, I'll be heading to the Yokai Realm with Ya'ai."
"The Yokai Realm…?"
Akashiya Moka blinked, both surprised and curious. "Why?"
Yotsuya Miko and Tohru also looked at him with interest. They all knew what the Yokai Realm was—
It was where Moka was born.
"Because of that guy from yesterday," Arthur replied calmly. "Since he poses a potential threat, it's best to deal with it early."
"Deal with it early…"
Yotsuya Miko froze for a second, as if realizing something. A glint flickered in her eyes.
"Can I go too?" Tohru looked at Arthur expectantly.
"You…" Arthur thought for a moment, then smiled.
"Tohru, stay home. Help me protect Moka—and the house while you're at it."
"After all, you and I have the highest combat power here," he added with an encouraging smile. "I trust your strength."
"Well, okay then."
Tohru looked a little disappointed, but she nodded obediently.
"Good girl," Arthur said with a grin.
Then he turned to Yotsuya Miko. "What about you, Miko?"
"Ah! Me?"
She blinked in surprise, just as her phone chimed.
"One second."
She took it out and checked—it was a message from Yuri Kawakawa.
After reading, her brows furrowed slightly, then relaxed as she typed a quick reply.
She looked back at Arthur.
"I won't go. Kawa-chan asked me to accompany her to a shrine."
"To a shrine? Why?" Arthur raised an eyebrow.
"She said she felt like someone was watching her when she went shopping last night," Yotsuya explained while scrolling through the message.
"But every time she turned around, there was no one there."
"She also had a nightmare afterward."
"So she wants to visit a shrine to pray for safety."
"I see…" Arthur's gaze deepened thoughtfully.
"If I'm not mistaken, something unclean has probably set its sights on Kawakawa. Be careful, Miko."
He wasn't too worried, though. Yotsuya Miko wasn't weak anymore—and the bond of the familiar contract would protect her if anything serious happened.
"I understand," she replied with a smile and a nod.
In recent days, Yotsuya had exorcised several evil spirits on her own.
Her control over her power had grown more refined.
And she'd noticed something—she seemed to attract evil spirits naturally.
Every now and then, she'd just run into one.
Like two days ago, when she passed through a park after school—
She saw what looked like a child but was actually a disguised spirit.
The spirit even greeted her cheerfully.
If not for her spiritual energy allowing her to see through the illusion, she might've responded.
So, she used the same "old trick" again—
lured it into a deserted area using her own life force as bait,
then ambushed it from behind.
The exorcism was effortless.
"Sometimes being sneaky really pays off," she thought.
Arthur wasn't too concerned—he knew she could handle herself.
Half an hour passed in a blink.
Back in his bedroom, Arthur opened the Compendium of All Things to check his latest reward.
Name: Akua Shuzen
Rank: Blue
Description: Genius Vampire
Reward:Reverse Heavenly Binding
"…'Heavenly Binding'?"
Arthur was genuinely surprised.
That was an ability from the Jujutsu Kaisen world—
a power representing 'imperfection and strength.'
By sacrificing something innate, one could gain enhanced attributes in return.
It had three key traits:
Innate: It activates from birth, unaffected by one's will.
Irreversible: Once the trade-off is made, it's permanent.
Limit-Breaking Enhancement: The strengthened aspect can surpass normal limits.
What he received was Reverse Heavenly Binding—
the kind used by Toji Fushiguro,
who exchanged all cursed energy for total resistance to it and an almost indestructible body.
Without hesitation, Arthur began integrating the ability.
He wasn't worried about losing his energy—
Anything gained from the Compendium came without side effects.
Even if it were something as risky as the Hand of Deathly Seduction, it wouldn't harm him.
Besides, with his infinite energy reserves,
he was curious to see if Heavenly Binding could even drain him—
and just how far it could push his physical body.
After all, it was only a blue-tier reward.
The upper limit shouldn't be too absurd.
As Reverse Heavenly Binding fused with him,
Arthur could feel vast amounts of primal energy coursing through his limbs,
his organs, his very bones—
Every part of his body was rapidly strengthening.
Physical and magical defense skyrocketed.
Under this enhancement, his already perfect physique advanced even further—
almost divine,
impervious to all harm, like a Diamond Body.
His flesh alone could now shatter or nullify both energy and physical attacks.
When the process ended, Arthur took a moment to gauge the results.
His physical power had increased roughly fiftyfold,
his body reaching B-rank.
It sounded like a lot—
but the higher one climbed, the wider the gap between each tier became.
For example:
A B- level being could destroy a small city with one blow.
A B level could wipe out a medium or large city.
A B+ level could do so casually.
The difference between sub-ranks was dozens or even hundreds of times.
The higher the grade, the greater the disparity.
So fiftyfold improvement wasn't too exaggerated after all.
Ten minutes later—
Having made all preparations, Arthur slung a silver-gray shoulder bag and stepped into the courtyard with Akua Shuzen.
Tohru and Moka stood by the window, watching them go.
Yotsuya Miko had already left.
"Well, we're off," Arthur said, wrapping an arm around Ya'ai's waist.
Silver light shimmered around them.
In the next instant, the two rose into the air.
Multiple layers of barriers formed around them as they turned into a silver streak of wind,
soaring skyward toward Fukushima Prefecture.
Their speed broke the sound barrier—
twice, four times, eight times…
until finally reaching Mach 12.
Within moments, they arrived in a desolate mountain region.
Under Ya'ai's direction, Arthur located the massive barrier concealing the spatial gate to the Yokai Realm.
"Inside that barrier is the passage," Ya'ai explained.
"It can only be opened by someone with sufficient power."
"Got it. Let's go," Arthur said, lowering her gently to the ground.
Following her instructions, he activated the gate,
and the two stepped through.
The scenery flickered—
They emerged within a dense forest in the Yokai Realm.
Arthur rose into the air again, locking onto their next destination—
Yanghai Academy,
the school established by yokai to emulate the human world.
At the same time, in a distant room—
The real Fujisaki Miyabi suddenly opened his eyes,
his sharp gaze turning toward the spatial gateway's direction.
His brows furrowed slightly,
a flicker of confusion passing through his eyes.
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