Death: Starting as the Guardian of Avici Hell

At this point, Mayuri Kurotsuchi's expression suddenly turned somewhat annoyed:

"When spiritual particles are concentrated in a small area for a long time, their properties undergo subtle changes, ultimately leading to the failure of the forging."

"If we use the soul of the Grim Reaper to forge it, there will definitely be no problem."

Upon hearing this, Kisuke Urahara couldn't help but rub his eyebrows.

“Mr. Nie, you’re going a bit too far.”

Naraku Sora seemed to be deep in thought.

In summary, these two brilliant strategists collected the fragmented souls of criminals who died in prison, used them as raw materials for forging a Zanpakuto that didn't resemble a blade at all.

"It's not a big deal if the research fails, is it?"

Naraku shook his head indifferently, "Why not just start over? As for souls and such, aren't there still many nobles who are unwilling to give up?"

Urahara Kisuke: "?"

He always felt that he was already one of the best among the unorthodox, but compared to the two people in front of him, he was simply an ordinary citizen.

However, upon further reflection, it does seem to make sense.

Experiments and research inevitably involve sacrifices. If the nobles knew that their contributions could bring about change in Soul Society, they would probably be very gratified.

The moment the thought crossed his mind, Kisuke Urahara shook his head repeatedly.

Spending too much time with those two guys has made my thinking become extreme.

The nobles are at the very top of the Soul Society's order; without them, things would get very complicated.

"Lord Naraku, now is not the time to discuss that issue. We will find a way to obtain the materials."

Kisuke Urahara rubbed his face vigorously, trying to make his expression serious and avoid being led astray by someone again:

"The key is that iron bar in your hand."

"Because of the materials used, it's not unreasonable to consider it part of an underground prison, which also gives it a special function."

"what?"

"Open the lowest level of the Avici Hell."

Upon hearing this, Naraku's eyes lit up.

He immediately reached out and slapped Urahara Kisuke hard on the shoulder, the exaggerated force causing Urahara to grimace.

"Well done, Kisuke! You truly are someone I value!"

"This prison order grants you half a day, uh, two hours of leave. Take a good rest."

Urahara Kisuke: "..."

You are truly compassionate.

After Naraku finished speaking, he picked up the iron bar and prepared to leave, but as soon as he turned around, he was grabbed by Urahara Kisuke.

He said with a serious expression:

"Lord Naraku, the sinners imprisoned in the Avici Hell are all heinous thugs, and they must not be released."

Naraku Sora grinned, revealing a somewhat dangerous smile:

"Who said I was going to release them?"

Seeing that expression, Kisuke Urahara shuddered.

Looks like someone's going to be in trouble.

He stated that he has extremely rich experience in this regard.

……

……

After some persuasion, Kisuke Urahara gave up on this futile endeavor and instead began preparing things that might be needed in Avici Hell.

Mayuri Kurotsuchi then brought out a surveillance bacterium that had just been developed.

By attaching it to an object or skin, it can achieve spiritual synchronization, observe the outside world, and store visual information.

Naraku Sora couldn't understand why something as small as bacteria could perform surveillance work.

After thinking about it carefully, I suddenly realized that Mayuri Kurotsuchi, who seemed to call himself a scientist, was actually the most unscientific guy.

In his words—

Is spirit material such an inconvenient thing?

Kisuke Urahara wholeheartedly agreed.

After simply carrying a reinforced version of the communication device, the three of them headed towards the lowest level of the underground prison.

After avoiding the others, we quickly arrived at the entrance.

To prevent any accidents, Mayuri Kurotsuchi was responsible for guarding the entrance to the seventh floor, while Kisuke Urahara was responsible for opening the entrance to the Avici Hell.

Because the eighth floor and the seven floors above it are not part of a whole, and because the three people were unauthorized intruders, the preparations were somewhat complicated.

Before long, as Kisuke Urahara injected his Kido spiritual pressure, the space in front of him began to distort, revealing a pitch-black vortex.

After quickly assessing the situation and confirming there was no danger, he nodded to the person next to him:

"Lord Naraku, you may proceed with the entry. Just in case, please remember the password we agreed upon. Also, releasing criminals without authorization is illegal..."

Before he could finish speaking, Nairoku said impatiently:

"Kisuke, why have you become as nagging as an old man in the mountains?"

"I know what I'm doing!"

Having said that, he took a step forward and plunged his body straight into the constantly fluctuating vortex.

……

……

What came into view was endless darkness, as if it were a world where light did not exist.

I simply released my spiritual pressure to sense it.

Naraku Sora was shocked to discover that no matter how much he expanded his spiritual pressure range, he could not reach the edge of the Avici Hell. In terms of the boundary alone, it had even surpassed the entire Seireitei.

It seems to completely reject the concept of "space".

Naraku Sora extended his finger and released a Crimson Fire Cannon with a weak spiritual power, making it hover near his body as a light source.

As the most commonly used Kido by Shinigami, the Red Fire Cannon has a wide range of uses, and using it as a lighting device is one of them.

Soon, the darkness slowly brightened.

The light only illuminated the black, special material of the floor, not the ceiling or any walls; the area outside the light remained shrouded in darkness.

Now comes the main event.

The prisoners in the seven upper levels of the prison can no longer provide any effective benefits, but hopefully the Muken, which holds the most vicious people in Soul Society, can bring some surprises.

According to records preserved in the Shin-o Prison, there were quite a few criminals in the Avici Hell.

Most of them were extremely dangerous and had committed heinous crimes that were intolerable to the 46 Chambers and even the entire Soul Society.

However, because his spiritual pressure reached the third level, it was inconvenient to execute him, so he could only be imprisoned in the Avici Hell.

I wonder if these guys, after being imprisoned for so many years, still possess the power they once had.

If it's too weak, it's not worth much.

We might as well take it up and give it to Aizen, and use it as material.

Following the dark floor forward, they soon discovered something unusual at the end of the light source.

A smooth stone pillar.

On the floor made of murderous stone, there were some broken restraints and chains, which seemed to indicate that the criminals who were imprisoned here had escaped.

Naraku Sora curled his lip in disdain:

"Old man Shan is still being stingy and won't give me the key. If he doesn't come down here to check soon, Wujian will be riddled with holes."

However, just as he finished speaking, a faint spiritual pressure fluctuation suddenly emanated from the air, and a strong wind swept through the darkness.

It was as if some unknown creature was walking silently.

Naraku Sora frowned and subconsciously released a detection circuit. A faint light emanated from his fingertip, instantly covering an area of ​​a thousand meters in radius.

In places where even the concept of space has been distorted, the detection circuit is undoubtedly much more useful than the Grim Reaper's spiritual pressure perception.

He quickly discovered the source of the unfamiliar spiritual pressure.

A man hiding in the darkness.

Emaciated, with disheveled hair, his face contorted with hysterical madness, his bloodshot eyes fixed on Naraku Sora, as if he were Naraku Sora's only hope.

Perhaps it was because he had spent so much time in the Infernal Realm that he was able to remain unaffected by the darkness.

It seems they are planning to ambush from the shadows and use that as an opportunity to escape from the Abyss.

If it were any other Grim Reaper, they might actually succeed.

Unfortunately, he encountered an absolute monster.

Naraku Sora grinned, full of anticipation, and followed the path forward as the other party had planned, until he reached the attack range.

Just then, a barely perceptible clicking sound rang out.

An extremely violent spiritual pressure suddenly burst forth, pouring down like a flood bursting its banks, instantly engulfing Naraku. At the same time, the man burst out of the darkness.

A fierce gaze met a half-smile.

Kuroda Ryosuke's heart skipped a beat.

Did this guy already know I was there?

What was he doing pretending to be clueless? Was he setting a trap?

Ryosuke Kuroda felt a little flustered, but there was no turning back now.

As the third-generation captain of the 10th Division, even though he had been suppressed by Mugen for over a hundred years, he could not possibly lose to a mere brat who didn't even have a captain's haori.