Death: Starting as the Guardian of Avici Hell

It wasn't until the battle with Enra Kyōden that a flash of inspiration struck Naraku Sora when he witnessed Enra Kyōden combining the power of different Zanpakutō in combat.

Since it's not possible to fuse Ryushin with Kido for the time being, it's better to prepare in advance, accumulating the power of Kido within the Zanpakuto, and then unleash the ultimate Ryushin with this form of Zanpakuto—

Thunder Roar Dragon Flash!

A deafening roar erupted, shaking heaven and earth.

A crack appeared on the spiritual pressure shield, which had been nearly halved by Aizen's Kido, and it instantly disintegrated.

Arturo stared in astonishment, as if he saw thousands of thunderbolts surging towards him.

A dazzling beam of light erupted from it, instantly piercing the sky and becoming the most spectacular scene on the battlefield.

The violent impact caused the sand sea to explode layer by layer, with smoke and dust swirling and surging, and leaping lightning bolts connecting heaven and earth into one, while a raging hurricane rose from the ground.

boom!!

A sharp explosion rang out from within the pillar of light, and a figure was sent flying backward, like an iron plow turning over a desert, with visible waves spreading out in the hurricane.

From south to north, concentric waves of air burst forth, trailing trails of lightning and flames. Arturo carved a deep trench tens of meters long in the sea of ​​sand before crashing violently into the rising sand dunes, raising clouds of dust.

Aizen looked on in surprise at the exaggerated scene.

Because they often compared what they had learned, he was very clear about Naraku's strength.

Although I have never used blurring in a competition, I have a general understanding of how it works.

But the strike just now had clearly exceeded its original limit.

At this rate, can I really keep leading?

A sense of urgency inexplicably arose in Aizen's heart.

"—The crawling Iron Princess, the clay doll that constantly self-harms, combines, rebounds, and extends to the ground, knowing its own powerlessness."

A calm voice rang out amidst the howling hurricane, and a faint, dark glow of demonic energy emanated from his fingertips, profound and unknown, as if it had even absorbed the moonlight.

It's still the black coffin that they're best at and most effective at.

Aizen stared at the sand dunes not far away, his spiritual pressure locking onto Arturo's location, giving him no chance to catch his breath.

As he fell, a deep blackness rose from the ground, a vast spiritual pressure surged and pressed down, and intricate patterns were outlined on the iron wall.

In an instant, Arturo was sealed inside.

Countless sharp blades erupted from the black coffin, the sound of flesh being torn apart was incessant.

When the black coffin dissipated, the battered Arturo still stood upright, but covered in blood and no longer recognizable as a human.

The most serious injury was inflicted by Naraku Sora's enhanced Dragon Flash.

The gash stretched from the right shoulder down to the waist and abdomen, so deep that the bone was visible, almost severing half of the body.

His pale face was stained with blood, and his cold, golden eyes stared at the two people not far away. His indifferent voice slowly rang out.

"It must be admitted that time is the most deadly weapon."

"Only two thousand years have passed, and yet another Shinigami comparable to Yamamoto Shigekuni has appeared in the Soul Society."

"And it's even worse."

"I underestimated you."

"But at the same time, you have no idea what an immortal king is."

As he spoke, countless granulation tissues sprouted from the wound, and the super-fast regeneration, far exceeding the limits of cognition, continued to take effect.

As someone who nearly ruled the Soul Society, Arturo possesses a crucial core ability in addition to absorbing the spiritual pressure of the defeated to strengthen himself.

That is extreme super-speed regeneration.

Unlike other Hollows with their super-fast regeneration, Arturo can regrow his head and be resurrected no matter how severe his injuries are, or even if his head is cut off.

Even residual body tissue can be restored.

This is precisely why Yamamoto chose to seal it rather than kill it.

Looking at the rapidly recovering, broken body, Naraku Sora's face showed envy.

While his super-fast regeneration is impressive, it's still far inferior to the completely unreasonable Arturo.

Despite this incredible feat, Arturo couldn't detect even a trace of fear on the faces of the two people opposite him; on the contrary, they remained remarkably calm.

It was as if nothing had happened.

He frowned, somewhat puzzled.

Seemingly sensing Arturo's confusion, Aizen took two steps forward. By this time, the aftershocks around them had subsided, and the dust had settled.

A calm voice broke the deathly silence.

"Actually, I had considered this issue long before I even left Hueco Mundo."

Aizen's calm demeanor stirred a strong sense of unease in Arturo, as if something bad was about to happen.

"Given Captain-Commander Yamamoto's temperament back then, how could he have chosen to seal a self-governing Arrancar at the Hill of Twin Extinction?"

"Could it be that even the sword demon can have mercy?"

“I fully understand the flaws in this idea, so I changed my approach. Perhaps it is only when an enemy cannot be killed that we resort to sealing as a second-best option.”

"This idea was later proven during your battle with Kong; your super-fast regeneration was completely illogical."

"Therefore, we conclude that even if we combine our strength, we cannot kill you."

"So, at the moment you were shot down by the air, I used the black coffin to inject a self-created binding spell into your body."

Arturo's expression changed drastically.

The next moment, a sharp spike appeared out of nowhere and pierced straight through his chest.

As if by some signal, countless spikes appeared out of nowhere, disintegrating Arturo's proud steel-plated defenses from the inside.

"This is impossible!"

Arturo, who had remained calm throughout, finally showed some panic, and swung his knife at the spikes, causing a series of sparks to fly.

Seeing that the attack was ineffective, it ruthlessly attempted to cut off the flesh.

"It's no use. The place I chose to plant it is not flesh and blood, but spiritual pressure."

Aizen's words, though seemingly cold, were like knives piercing Arturo's heart.

"At the same time, most of your spiritual pressure is used for hyper-regeneration, which is an instinctive reaction that cannot be suppressed."

"Therefore, the effect of the binding spell will be brought to its limit."

Beside him, Naraku Sora looked on with a strange expression.

Is it possible that scientists' thinking often shows a surprising consistency?

If he remembered correctly, this method was used on Aizen by some lazy bum, right?

But with Arturo as an example, will Aizen take precautions in advance?

Come to think of it, he seems to have left that salted fish out for too long; he doesn't even know if it took the bait.

I'll have to visit the Second Division when I get back this time.

Naraku Sora fell into deep thought.

"Goo-"

Amid Arturo's desperate cries, spikes gradually engulfed him, and chains emerged from within, completely sealing his spiritual pressure.

A huge cross stands in the desert.

Seeing this, Aizen breathed a sigh of relief.

it is finally over.

……

……

Meanwhile, somewhere in Hueco Mundo, inside a massive lair.

A gaunt figure lay on a chair, wearing something resembling binoculars on his face, a slight smile playing on his lips, as if he were witnessing something captivating.

"It's surprising that Arturo was sealed away."

"What a unique existence! Compared to intelligence and talent, the unknown is what scientists should pursue."

"I've memorized your scent, Death..."

Chapter 104 Harvest Night

Rukongai, Koibushiyama.

Inside the secret base, in the laboratory.

Looking at Arturo, who was submerged in an unknown liquid, Naraku Sora looked eager to pounce.

"Sousuke, how do you plan to deal with this guy?"

Aizen stared intently at Arturo in front of him, occasionally tapping the equipment and injecting a little reagent into the container.

"First, we analyze the nature of spiritual particles, then we conduct a detailed analysis of the skin, flesh, and bones of the spiritual body, and in addition, we also study the soul level."

Why are you asking this?

Arturo is, after all, a Vasto Lorde who is an independent Arrancar, so it's definitely right to pay more attention to him.

In addition to injecting the necessary anesthetic, corresponding spiritual energy suppression drugs and related binding seals are also required.

Besides Arturo, this trip to Hueco Mundo also yielded a Gillian on the verge of evolution, and an Adjuchas in its hyena form.

Although they are all corpses, they still have high research value.

Looking at the enormous object floating in the liquid, Aizen couldn't help but smile slightly.

With these materials, his research will enter a phase of rapid development, and many problems that are usually difficult to solve will be easily resolved.

What he lacks most right now is data support.

However, we don't lack Hollows for the time being, but we are somewhat lacking in Shinigami.