Bleach: No cheat codes, he joined Aizen's side.

Chapter 154, Section 152: The Prelude to Chaos
Traveling from Soul Society to the Human World doesn't actually take much time, except for the time it takes to open the portal. However, the portal's coordinates can't be directly located on the battlefield, so when Shiba Kaien led his team to the scene of the incident in the Human World, it had already become Hollow Paradise.

As far as the eye could see, there were more than a dozen enormous beast-like phantoms, each dozens of stories high, wantonly grabbing unsuspecting humans and feasting on them.

"Damn it! How dare you idiots?!"
Scattered among the bones of beasts, spires, red crystals, and steel wheels, movement is the wind, stillness is emptiness, and the sound of spears clashing fills the void city!
"Hado #63, Thunder Roar Cannon!"

Shiba Kaien couldn't bear to look at such a tragic scene. Just one glance reminded him of his trip to Osaka Prefecture ten years ago, when the entire Osaka Prefecture was almost turned into scorched earth, and almost one in a thousand of the original humans living there survived.

However, Shiba Kaien's broken path was shattered halfway by a gust of wind before he could even touch the body of a Hollow.

"Death, your opponent is me!"

A Hollow with the symbol "No. 3" etched on its forehead by a white mask, surrounded by two small hurricanes, appeared above the trajectory of Shiba Kaien's Thunder Roar Cannon and said with a smile.

As one of the five great noble families and the future head of the Shiba family, Shiba Kaien usually only participates in the affairs of the 13th Division and has never been to Hueco Mundo. However, he has long heard of this special form of Hollow, not to mention that he participated in the noble hunting incident that shocked Seireitei decades ago.

Afterwards, he became even more wary of this Hollow who was named the Arrancar.

According to the information given by the Captain-Commander at the time, these Arrancar possessed strength far exceeding that of ordinary Captain-level individuals, and were even stronger than Vasto Lorde-class Hollows, the highest level defined by Soul Society for Hueco Mundo in the past.

In other words, he is currently only a vice-captain and has not yet mastered Bankai, so he has no chance against this Arrancar.

This is a matter that only a captain-level officer can handle!

Almost the instant he saw the Arrancar appear, Shiba Kaien made his own judgment in his mind.

Then, the Zanpakuto is released.

"Water and sky reverse, twisting flowers!"

Knowing he was outmatched, Shiba Kaien, as the vice-captain, couldn't abandon his Shinigami team and run away alone. Watching the Hollows swarming towards them, he had to buy time for the others to evacuate.

"The sea and sky meet at the horizon!"

Shiba Kaien raised his trident-shaped spear, swung it around in mid-air, and then slashed it down in front of him. A water curtain connecting the sky and the earth rose up, completely separating the Shinigami on Shiba Kaien's side from the Hollows on the opposite side.

"Retreat immediately! This incident is beyond our control. We need to go back and inform Captain Ukitake right away!"

Shiba Kaien immediately shouted to the Grim Reapers around him.

He knew that apart from the brief appearance of the Arrancar in that incident decades ago, the Soul Society had enjoyed a very long period of peace, and the current members of the 13th Division of the Shinigami were certainly unaware of the Arrancar's power.

However, Shiba Kaien underestimated the seriousness of the incident.

Is his "Sea and Sky Line" impressive?

Compared to ordinary Shinigami, it is certainly powerful, but it is definitely not enough to leave the current Espada No.3, Dordoni, helpless.

The reason why Dordoni simply stood quietly on the other side of the horizon, ignoring the other Hollows that flocked to the water curtain like moths to a flame, was because another man had already positioned himself on the retreat route of Shiba Kaien and his fellow Shinigami.

That man was someone Dorudoni dared only look up to.

"Since you're here, stay!"

The voice of Koyatai Stark, the current No. 1 Espada of Hueco Mundo, appeared in mid-air.

But no death saw him.

It's not that I'm blind, but that I never had the chance to open my eyes.

In less than a second, Koyatai Stark had already moved among the dozen or so Shinigami who had come with Shiba Kaien.

Without even needing to use his Resurrección, the Shinigami members were all killed by Stark simply because of Soren and his overwhelming spiritual pressure.

"Two or two Arrancar?"

Shiba Kaien revealed a miserable, pale smile.

What merit or ability does he possess to deserve such treatment?
With this kind of situation, let alone his vice-captain, even if his captain, Jushiro Ukitake, came, he probably couldn't handle it.

Meanwhile, in Soul Society, Captain Ukitake, whom Shiba Kaien was thinking of, had already arrived at the First Division barracks where the Captain-Commander resided.

"You want to go to the mortal world?"

Seated in his seat, Yamamoto Genryusai Shigekuni faced Ukitake Jushiro's late-night request with a hint of doubt in his eyes.

Similar to how a vice-captain level Shinigami like Shiba Kaien needs his captain's permission to go to the human world, even a captain-level Shinigami like Ukitake Jushiro must obtain the Captain-Commander's permission before going to the human world. In fact, there is an extra procedure compared to a vice-captain: reporting to the Central 46.

In principle, a regular captain can only go to the mortal world after both the Central 46th Bureau and the Chief Captain have given their consent.

This is also to prevent captain-level Grim Reapers from having too much impact on the mortal world and thus disrupting the balance of the three realms.

Although from a practical point of view, this regulation has not had any good effect.

"The divination tells me that Shiba Kaien may encounter a very serious crisis in this world!"

Jushiro Ukitake spoke frankly to his teacher.

"Your divination result?"

"I know a little about what happened to Jushiro Ukitake, but Ukitake's family is deliberately keeping it a secret, and as Ukitake's teacher, I can't pry too much," Yamamoto Genryusai Shigekuni said slowly.

However, Jushiro Ukitake's divinations were always quite accurate. So, if anyone else had said the same thing, Genryusai Shigekuni Yamamoto would have just thought they were joking with him. But with Jushiro Ukitake, he could believe it.

Moreover, the dangerous person is named Shiba Kaien. Even though the Shiba family is now very out of favor among the nobles, there is one thing that Yamamoto Genryusai Shigekuni still has to admit: the Shiba family is still one of the five great noble families.

As the next head of the Shiba family, especially given that the current head, Shiba Muramasa, is no longer at his peak due to age, it goes without saying how important Shiba Kaien is to the Shiba family.

"I've approved it. I'll go and inform the Central 46th Bureau. You can go ahead and do your job!"

Therefore, Yamamoto Genryusai Shigekuni granted Ukitake Jushiro's request.

And after Jushiro Ukitake left in a hurry, Yamamoto Genryusai Shigekuni, under the cover of night, did not go to the Central 46 Chambers first, but instead went to the Shiba family's residence in Seireitei.

"Is my grandson in danger?"

Looking at the elderly man before him, who was almost the same age as himself but had lost his son at a young age and only had two grandsons and a granddaughter still alive, even Yamamoto Genryusai Shigekuni couldn't help but feel a pang of sorrow.
"That should be the case. You should also be familiar with Jushiro Ukitake's divination; it's always very accurate. However, I have already agreed to Jushiro Ukitake's request and approved his immediate trip to the human world to provide support."

Yamamoto Genryusai Shigekuni nodded.

"Is Ukitake Jushiro alone enough?"
Chongguo, don't forget what happened ten years ago.
Although the Gotei 13 claimed afterward that it was the former lieutenant of the 13th Division who fought with all his might, along with the efforts of all the Shinigami in the Investigation Team, that defeated the enemy and killed the traitor, the truth is that it was your disciple, Kyoraku Shunsui, who asked the current Great Sword Commander, then a traitor to Soul Society, Higashino Shuichi, to intervene and successfully rescue Kaien from those Fullbring madmen in the human world.

"If it weren't for this reason, the withdrawal of Higashino Shuichi's arrest warrant wouldn't have been approved by you so quickly, would it?"

Shiba Village gazed at Yamamoto Genryusai Shigekuni across the street and spoke softly.

Are you worried that this incident will be the same as the one ten years ago?

Upon hearing his old friend recount the incident that occurred in the present world ten years ago, Yamamoto Genryusai Shigekuni's expression finally turned serious.

"Shigekuni," Shibamura said, his expression suddenly turning somber as he saw Yamamoto Genryusai Shigekuni's seemingly unclear view of the current situation. He sighed in an even more dejected tone, "Do you know how long it has been since I mastered the Bankai of my Zanpakuto and gained captain-level strength?"

Yamamoto Genryusai Shigekuni shook his head. Even if Shibamura was his friend in the past, they were just friends. How could he possibly remember such a thing?
"Six hundred and fifty-three years and seven months," Shibamura said, "I don't have your talent. Mastering Bankai has used up all the luck I had in my life."

However, you know, I always thought that I had not only used up my luck, but also the luck of our Shiba family. Otherwise, why has our Shiba family never produced another genius who can master Bankai?

Fortunately, Haiyan was born, and he gave me hope.
Everyone knows I'm dying.
Everyone knows that only Kaien remains in our Shiba family, and he has the ability to master Bankai and support our entire Shiba family in the future.
Do you know what I think about that incident ten years ago? (Chong Guo)
I wonder if someone might have planned this all along?
"Is there anyone who doesn't like the five noble families and only wants the four?"

Looking at the deepening wrinkles on Yamamoto Genryusai Shigekuni's face, Shiba Village knew that Yamamoto Genryusai Shigekuni had thought too highly of the nobility.

"I read the report that Ukitake gave me. The report said that the incident that happened in the real world was caused by a Hollow. If a Hollow could be considered a guide, those Hollows who basically only follow their instincts shouldn't be able to do that."

"Then why must it be this period, when the Tsunayo family almost completely controls the discourse? Why must it be in the human world?" Shibamura shook his head and said, "So, just do me this old man a favor, Shigekuni, please send a few more captains to the human world to bring Kaien back safely. After this incident, I will let Kaien come back. He will be released when he has mastered Bankai."

"And if—and I mean if—Kaien really does perish, Shigekuni, I hope you can mentor a Shinigami named Shiba Isshin from our Shiba branch family. Besides Kaien, he's the one I believe is most likely to master Bankai."

After listening, Yamamoto Genryusai Shigekuni gave Shibamura a deep look. He knew that his old friend must be suffering a lot. However, as the captain-commander of the Gotei 13, he also had his own responsibilities. Even if he vaguely agreed with Shibamura's statement, he could not do anything more from his position.

"Emergency meeting of team leaders!"

The Hell Butterfly flew gently from Yamamoto Genryusai Shigekuni's hand and disappeared into the night outside the window in the blink of an eye.

This is the only thing Yamamoto Genryusai Shigekuni can do now.

So, just as dawn was breaking, all the captains of Soul Society, except for Jushiro Ukitake, the captain of the 13th Division, and Shuichi Higashino, the great sword-wielding commander who was not required to obey orders, gathered in the captain's rest room of the 1st Division.

The meeting was as brief as ever, outlining the dispatch of several team leaders to provide support in the real world, and specifying which individuals they would be.

Since Jushiro Ukitake had only recently gone to the human world and the specific details had not yet been reported back, most of the captains were not particularly satisfied with the Captain-Commander's reckless actions.

Just because that vice-captain is named Shiba Kaien, a captain's meeting was convened for him when the situation was still unclear and he was only suspected of being in danger. Furthermore, even though one captain had already been sent, another captain was to be added.

This can no longer be considered special treatment; it's practically throwing the word "privilege" right in the faces of all the team leaders.

If the current captain lineup were still the same as it was decades ago, before Kisuke Urahara and his crew defected, it might be easier to explain. After all, most of the captains back then, even if they weren't nobles, had close ties with nobles, and everyone tacitly understood that.

However, now, after a major reshuffle of captains, more than half of the current captains of the Gotei 13 are from the most authentic Rukongai commoner backgrounds.

Yamamoto Genryusai Shigekuni was well aware of this, but he still did it anyway.

Therefore, the final decision was that the captains sent to the human world were basically all from the aristocratic faction: Soi Fon, the captain of the 2nd Division; Shunsui Kyoraku, the captain of the 8th Division; and Sajin Komamura, the captain of the 7th Division, who had to give face to Genryusai Shigekuni Yamamoto. Only Kenpachi Zaraki, the captain of the 11th Division, seemed out of place among them.

However, Yamamoto Genryusai Shigekuni and the other captains are unaware that this is merely the prelude to the chaos that is about to unfold.

After the captains' meeting, Aizen Sousuke, the captain of the Fifth Division, and Ichimaru Gin, the captain of the Third Division, went to have breakfast together, while Mayuri Kurotsuchi, the captain of the Twelfth Division, quickly returned to his underground laboratory alone.

Although the current time is different from what Higashino Shuichi and he had planned, Mayuri Kurotsuchi would never let go of this once-in-a-lifetime opportunity.
Ichimachi, Kanda Prefecture, right?

Mayuri Kurotsuchi took out a map of the present world and quickly found Hokukai Prefecture, a city farthest from Kanda Prefecture and inhabited by many humans.

Then, he set the coordinates by himself, opened the portal, and simultaneously released the three first-generation experimental subjects of the modified souls who had been under deep hypnosis in the nutrient tank. He then threw them into the portal as quickly as possible and closed it.

What happens to these three modified souls next will all be transmitted back to Mayuri Kurotsuchi in detail through the monitoring bacteria that Mayuri placed on them.

(End of this chapter)