This was not solely due to the effects of the Blanks.
Sarayashiki City was already an Otherworld harboring special powers.
His actions had inadvertently mixed the [Demon Energy] present in this world into his body, resulting in this transformation.
Even if he somehow managed to win this battle by a stroke of luck... having become a monster possessing Demon Energy, he would never be able to return to his original form.
But he could only worry about such problems if he survived. Right now, his only option was to find a way to defeat the black-haired demon god standing before him.
Meanwhile, the Ryudoji samurai who had luckily survived Asuka's attack finally regrouped from the chaos.
Seeing their leader transform into a terrifying behemoth, they did not retreat. Instead, emboldened by that massive wave of resentment, their eyes turned crimson.
"Protect Lord Ganryu! Kill them all!"
The samurai converged with the surging, unidentified Blanks around them, roaring as they attempted to flank Asuka from behind to create an opening for their leader.
Facing this mountain-like monster, Asuka's gaze remained completely unfazed.
"You've grown larger, but fundamentally, you are still meaningless trash."
He cast a sidelong glance at the swarm of samurai lunging from behind, preparing to thoroughly swat away these annoying flies first.
"Hey! Old man Soul Reaper! Don't think you can hog all the glory for yourself!"
"Your target is their general, right? Leave these guys to me!"
Not far away, Yusuke clenched his fists, the blue Spiritual Energy boiling around his body once more.
The glow this time was brighter and purer than ever before, clearly stimulated by Asuka's display of power.
Crack!
Before Yusuke could make a move, a samurai's limbs were bound by an emerald-green rose whip.
"Yusuke, you are as reckless as ever. Encountering this number of enemies, yet you didn't notify us sooner."
Slash!
On the other side, the legs of a sprinting Ryudoji samurai were cleanly severed, sending him crashing to the ground.
"Hmph, to think even this kind of scum could force you into a tough battle. Urameshi, you really are regressing."
On the other flank, a short, aloof youth dressed entirely in black held a straight sword, mocking him coldly.
"Urameshi! I'm here! I, Kazuma Kuwabara, will absolutely not let you fight alone!"
Accompanied by a gruff roar, a tall youth sporting a pompadour charged aggressively to Yusuke's side, brandishing a sword of light radiating an orange glow.
They were none other than Yusuke Urameshi's close friends: Kurama, Hiei, and Kuwabara.
Asuka raised an eyebrow slightly as he looked at these youths who had suddenly appeared to intercept the Ryudoji samurai on his behalf.
They exuded a unique energy, their auras feeling even stronger than those of ordinary Seated Officers...
Is this the Spiritual Energy of this world?
"Haha! You guys made it!" Yusuke fired off a Spirit Gun, laughing as he greeted them. "The situation was just too urgent, there was no time!"
He then shouted at Asuka, "Old man Soul Reaper! Leave cleaning up these tin cans to us! I guarantee not a single one will slip past to interrupt your duel!"
Kurama cracked the long whip in his hand, lashing fissures into a samurai's large shield. "Although we do not know who you are, sir, please rest assured and leave your back to us."
"Don't misunderstand. I just find these mindless monsters to be an eyesore," Hiei scoffed coldly, black flames flickering faintly along his blade.
"Watch my Spirit Sword unleash its awesome power!"
Kuwabara yelled at the top of his lungs, already impatiently charging toward the two leading Ryudoji samurai.
Looking at these youths—who, despite being somewhat reckless, had eyes burning with pure conviction—Asuka actually smiled, a rare sight.
"It seems that no matter the era, there are always young people like this fighting side by side..."
"Don't die, brats."
He turned around, pointing his gold-and-red tachi forward at the mountain-sized Ganryu.
The giant hellfire wolf behind him howled at the sky, heralding the arrival of the final execution.
"Die!!!"
Ganryu let out a furious roar. His four thick arms and four tentacles formed from resentment crashed down viciously toward Asuka from all directions like eight pillars of a falling heaven!
Even an iron beast forged of solid steel would be crushed to dust under such a strike.
However.
Asuka neither dodged nor evaded; he simply thrust his massive, flaming left wolf claw upward.
Boom!!!
A deafening crash echoed!
He had actually caught the combined smashing force of Ganryu's eight giant limbs with just a single hand!
The gold-and-red flames and the grayish-white resentment clashed and tore at each other violently in midair.
But no matter how Ganryu roared, no matter how frantically he pushed the power within his body, Asuka's wolf claw remained completely motionless, not lowering by even a single millimeter!
"How is this possible?! I absorbed the power of the entire Valley of Screams!!!" Ganryu's twisted face was filled with incredulous despair.
Asuka said coldly, "You only grew larger. You didn't grow stronger."
"At best, you are merely at Kaien's level. And you dare to fantasize about ruling the Three Realms?"
"Don't make me laugh."
Vmm—!
The flowing light on the long tachi in Asuka's right hand instantly retracted to the absolute limit, as if it had transformed into a black hole blade that devoured all light.
"Let me show you what true power is."
"Avici・Black Rope Hell."
Following that, he swung his blade fiercely.
Slash! Slash! Slash! Slash!
Four pitch-black blade gleams flashed through the air.
"Ahhhhh!!!"
Ganryu let out the most agonizing scream of his entire life.
His eight limbs, which contained terrifying power, were actually severed at the roots by Asuka's effortless slashes!
The severed stumps were as smooth as mirrors, with no blood flowing out. It was as if a boundless, mighty force had completely severed any form of regeneration.
"No! This is impossible! I am a god! I am the new world's..."
"You talk too much nonsense."
Asuka's figure instantly appeared directly in front of Ganryu's massive head.
The phantom of the giant flaming wolf behind him merged into one with him.
"I've heard a saying before... It's better not to use such strong words."
Asuka gripped his tachi tightly with both hands, raising it high above his head.
The pitch-black blade erupted with gold-and-red hellfire once more.
"It only makes you look weak."
A massive blade gleam that pierced the heavens and the earth descended from the sky, thoroughly illuminating this gloomy world!
Without the slightest suspense, this strike cleaved right through the center of Ganryu's brow.
With unstoppable momentum, it cleanly split his mountain-like body in half from head to toe!
The violent hellfire followed the blade's path, instantly igniting the two halves of Ganryu's ruined body.
"No!!!"
Amidst Ganryu's final wail, filled with remorse and despair.
His body, his soul, and the resentment of the tens of thousands of Blanks he had absorbed all rapidly dissolved under the burning of this purifying hellfire.
Ultimately, they turned into a flurry of black ash, dissipating into the void.
Meanwhile, down below.
"Spirit Gun!!!"
"Rose Whiplash!"
"Dragon of the Darkness Flame!"
"Spirit Sword・Extend!"
Accompanied by the simultaneous eruption of the Spirit Detective team's respective ultimate moves.
The remaining samurai army—having lost their leader's control and their supply of Blanks, turning into a disorganized mess—
—were swept away like fallen leaves in the autumn wind under the combined assault of the Spirit Detective team and Shinobu Kocho.