I'm in Bleach, starting with Unlimited Blade Works.

Former captain of the 12th Division, Kiryu Hikifune, is a successful example of this path.

By researching and developing the "temporary soul," and then integrating the "temporary soul" into the Shinigami's body as food, Kiryu Hikifune was able to directly increase the Shinigami's spiritual pressure, allowing him to successfully break through the Shinigami's limit with his own spiritual pressure.

Since it's an "experiment," there are bound to be risks.

For example, more than a thousand years ago, someone proposed the "Soul Vanguard Project" at the predecessor of the Seireitei Technology Development Bureau, which can be considered the precursor to "transforming souls".

Unfortunately, the experiment went wrong, resulting in a massive explosion that destroyed almost a tenth of the Seireitei and shattered the barrier between the Soul Society and the real world. This caused the spiritual particles generated by the experiment to leak into the human world, creating the immortal Bount clan.

It's no secret in Seireitei that some people stagnate due to a lack of strength, while others improve themselves through research.

The Soul Society has a history of over a million years, and countless experiments have been sealed away.

All those experiments caused enormous damage to Seireitei or had serious consequences.

The Hollowfication experiment of the Grim Reaper is one of them.

However, even though much of the experimental data has been sealed away by the nobles of Seireitei, over a million years, there will always be successors who will walk the same or similar paths as their predecessors.

Therefore, in order to prevent the Grim Reapers from secretly conducting experiments that could cause great damage to the Seireitei, the nobles granted permission to establish the precursor to the Technology Development Bureau.

The predecessor of the Technology Development Bureau, and even the 12th Division of the Gotei 13, were all places where Shinigami could openly conduct research on these things.

Yes, the research was conducted under the supervision of the nobles.

Any research conducted by Shinigami that is the same as or similar to experiments strictly prohibited by the Seireitei will be subject to sanctions by the Central 46, which will block the experimental data and arrest the researchers.

In this way, the nobles effectively curbed many experiments that could have had serious consequences.

However, there are always some people who can bypass the surveillance of the nobility and start their own experiments.

Urahara Kisuke was like that, and so was Aizen Sousuke.

Kisuke Urahara's Zanpakuto has the ability to modify all matter around him; wherever he is, that place becomes his laboratory.

And what about Aizen Sousuke?

Even if he entered the 12th Division's laboratory and used the experimental equipment to complete his experiment, probably no one would find out.

Upon hearing Mayuri Kurotsuchi's words, the captains present all fell silent.

Decades ago, Kisuke Urahara conducted experiments on Hollowfication and was expelled from the Seireitei. His laboratory was also sealed off by the Central 46.

The Hollow that has been discovered is clearly not an experimental product left behind by Kisuke Urahara.

In other words, there are still people conducting research on Hollowfication experiments within the current Seireitei.

"Boom!"

Yamamoto Genryusai Shigekuni slammed his cane hard on the floor, opened his eyes, and released an immense spiritual pressure from his body.

Clearly, Yamamoto Genryusai Shigekuni was very angry with the person who was researching the virtualization experiment.

"Captain Soi Fon of the Second Division, Captain Kyoraku of the Eighth Division."

"Lord Captain."

Soi Fon and Kyoraku Shunsui stepped out of the queue.

"Now, I expect your two squads to find out the origin of this Hollow as quickly as possible. Once you discover anything..."

"Captain Erin of the Eleventh Division."

"Yes, Captain."

"For this mission, I require you to follow up on it from beginning to end."

"If Captain Soi Fon and Captain Kyoraku find anything out, arrest all those involved immediately."

"Yes!"

Seeing this, the other captains also sensed Captain-Commander Yamamoto's determination this time.

Captain Erin of the Eleventh Division rarely gets involved in anything and usually stays at the Kuchiki residence.

The Eleventh Division's operations are all carried out by Vice-Captain Zaraki.

This time, however, Yamamoto Genryusai Shigekuni specifically requested that Captain Erin accompany him throughout the investigation, demonstrating the importance he places on this matter.

"The other captains must also be on high alert during this time to prevent the appearance of other Hollowfied Shinigami."

"Yes."

After leaving the captain's meeting room, Erin walked with Soi Fon and Kyoraku Shunsui and asked, "Soi Fon, Kyoraku, what are your thoughts on this incident?"

"Ha, everyone who researches the Hollowfication phenomenon deserves to die!"

Upon hearing Erin's question, Soi Fon's face hardened with a menacing aura.

It was as if everyone who researched the virtualization experiment had an irreconcilable hatred for her.

"Ha ha……"

Erin gave an awkward laugh.

He knew that Soi Fon was venting her resentment towards Kisuke Urahara on everyone who was researching Hollowfication experiments.

But there was nothing Erin could say about it.

After all, it was precisely because Kisuke Urahara was caught red-handed by the Central 46 that Yoruichi Shihouin abandoned Soi Fon and fled to the human world with Kisuke Urahara and the Hollowfied captains and vice-captains.

"What about the band leader of the Peking Opera?"

"Ugh……"

"We have very little intelligence right now, so we can only keep investigating and see if we can find anything else."

Kyoraku Shunsui held no hope that anything could be found this time.

After all, Kyoraku Shunsui couldn't find any flaws in either Erin or Aizen Sousuke.

No, Aizen has many weaknesses.

However, these flaws seem more like a deliberate attempt by Aizen to mock the others.

It gives you the feeling of "I gave you a chance, but you still couldn't do it".

The Hollow that Mayuri Kurotsuchi detected as possessing Shinigami spiritual pressure might have been released unintentionally by one of their subordinates, but after so much time, the traces of it must have been almost completely erased.

"By the way, Captain Soi Fon, although both the Second and Eighth Divisions have intelligence divisions, the Eighth Division mainly focuses on intelligence outside of Seireitei."

"The Second Division is better at handling intelligence about the inner workings of Seireitei."

"This time, Lord Yamamoto has asked our two divisions to join forces. As for the inner workings of Seireitei, we'll leave it to Captain Soi Fon."

"As for the Rukongai outside of Seireitei, let our Eighth Division take charge."

For Kyoraku Shunsui in his current state, regardless of whether the Fifth Division Captain Aizen Sousuke or the Eleventh Division Captain Erin has a problem, it's not something he can handle right now.

In that case, it would be better to take advantage of the fact that these two are still in the incubation period and improve your own strength.

With the power of his Zanpakuto, as long as his spiritual pressure increases, Kyoraku Shunsui will be able to fight against both Aizen Sousuke and Erin.

Since this Hollow was discovered within the Seireitei, Kyoraku Shunsui didn't want to get involved, lest he discover something that would upset one of the two of them.

Let Soi Fon handle this kind of troublesome matter.

"Yes, that way we can find out the truth about this matter in the shortest amount of time."

Soi Fon nodded in agreement to Kyoraku Shunsui's suggestion.

Chapter 235 Expectation

Indeed, as Kyoraku Shunsui said, the intelligence gathered by the Execution Army was primarily aimed at the inner workings of Seireitei.

While they do have external intelligence channels, they are far inferior to the professional Eighth Division.

After all, Kyoraku Shunsui and Ukitake Jushiro were on good terms, and their team members were also very familiar with each other.

Many of the Shinigami stationed in the mortal world are themselves Shinigami of the Thirteenth Division, but at the same time, they are also intelligence agents for the Eighth Division, collecting information about the mortal world for the Eighth Division.

Therefore, Soi Fon was completely unaware of Kyoraku Shunsui's ulterior motives, and instead felt that this would make it easier to find more information.

After that, Soi Fon turned her gaze to Erin.

"Captain Erin, Captain-Commander Yamamoto has asked you to assist us in the investigation. Now, our Second Division and Eighth Division are dividing up the tasks. Are you going to investigate inside Seireitei with us or outside Seireitei with Captain Kyoraku?"

“Since this Hollow was discovered within the Seireitei, I think investigating it within the Seireitei will yield results faster, so I'll go with you.”

"Ah."

Soi Fon nodded; Erin's words reflected Soi Fon's thoughts.

So, Soi Fon said to Kyoraku Shunsui, "Then, Kyoraku-sensei, we'll begin our work here."

"Well then, I wish Captain Soi Fon the best of luck in her first battle."

After waving to Soi Fon, Kyoraku Shunsui turned and left, preparing to take the Eighth Division to Rukongai for a bit of fun.

"Whizzing……"

Soi Fon is an impatient person by nature. After saying goodbye to Kyoraku Shunsui, she rushed to the scene of the incident in a single Shunpo.

Erin instantly appeared behind Soi Fon.

Soi Fon glanced around but didn't slow down.

Although she didn't know exactly how strong her former colleague was, Soi Fon, who had received Erin's instruction, knew that his strength far exceeded her imagination.

Perhaps, even a man as powerful as Ye Da is no match for this guy.

On the way, Soi Fon also sent a message to the Second Division through the Hell Butterfly, asking the Second Division's intelligence unit and the Detective Corps, who were skilled in reconnaissance, to rush to the location where the Hollow was found.

At Soi Fon's speed, it took less than ten minutes for them to arrive at the location where the Hollow was killed in the back mountain of the 13th Division from the captain's meeting room of the 1st Division.

"teacher."

"Captain Shatterbee."

Upon seeing Soi Fon and Erin arrive, a girl with an onion-shaped hairstyle stepped forward, bowed to Erin first, and then bowed to Soi Fon to greet her.

"Captain Soi Fon, Captain Erin."

The 13th Division Shinigami guarding the area also quickly greeted the two captains.

However, these Grim Reapers were now quite surprised.