Starting as a pirate, he rose to become the strongest Shinigami in Soul Society.

Chapter 421 Saito is immortal in the Abyss.

"You almost changed the history of Soul Society?" Tsunayoshi Tokinada asked with great interest.

He suddenly felt that he should take some time to study the Great Spirit Book Corridor properly. Last time he went there, he discovered his family's disgraceful deeds, such as plotting to harm the Spirit King. He was extremely disgusted with his family's identity as the Tsunami clan. Although he still didn't act like a human being afterward, he didn't go to the Great Spirit Book Corridor much.

"That's right. The first generation of Gotei 13, which Yamamoto Genryusai formed, were all ruthless people. At that time, Yamamoto Genryusai was the same, and he could get along with them. But later, Yamamoto Genryusai gradually changed his mind and 'betrayed' these people." The bald clan elder said.

"The support of the Central 46 alone is not enough for the Gotei 13 to gain a firm foothold in the Seireitei. It also needs the support of some nobles, but how could nobles like us possibly be interested in those assassins? To gain our support, they must relinquish their power within the Gotei 13. Fortunately, the head of the Shihouin family was one of the first captains of the Gotei 13. He helped Yamamoto Genryusai and introduced us nobles to the cause. Since then, the internal conflicts within the Gotei 13 have completely erupted. Now, the Fourth Division has fallen into the hands of our Tsunayo family, and the Seventh Division has fallen into the hands of the Tenshoin family. Do you all think these things came out of thin air?" the bald elder continued.

However, the old man didn't go into details about the two noble families vying for power in the Gotei 13, but instead brought up the Kuchiki family again.

"As for the Sixth Division, it is now in the hands of the Kuchiki family. But back then, Saito Immortal, who had completely broken with the Kuchiki family and parted ways with them, and whose personality was extremely crazy and eccentric, was unwilling to make such a concession. She led those resentful captains to launch a coup against Captain-Commander Yamamoto Genryusai, which completely ignited the internal strife of the Gotei 13." Tsuna continued on behalf of Makoto.

"In the end, she failed. Apart from Unohana Yachiru having absolutely no interest in these matters and not participating, the first captains of the Gotei 13 also completely withdrew from the historical stage due to various reasons and this rebellion. Imagine if the rebellion she led back then had succeeded, and she had seized power from Yamamoto Genryusai. Given her personality, she would have at least bloodily suppressed the Kuchiki family, if not slaughtered all the nobles. The Central 46 would have inevitably lost control of the Gotei 13 as a result, and the course of history in Soul Society would not be what it is today." Tsuna said this with a somewhat emotional expression.

"And what about this first captain of the Sixth Division now?" Tsunayoshi Tokina asked again.

"Compared to the others, she does possess the noble bloodline of the Kuchiki family. Therefore, taking these factors into consideration, the Central 46 Chambers ultimately decided to permanently suppress her in the Abyss," said the bald-headed elder.

Tsuna was speechless upon hearing this.

Are so many people imprisoned in this hellish place?

But then he thought about it again and realized that the underground prison had a long history, dating back to the Seireitei. It was much older than organizations like the Gotei 13, which only had a history of a few hundred years. Over the past million years, countless villains had been suppressed in the Abyss. He was only surprised to hear about two of them today.

"Saito, who is immortal, harbors great resentment towards the Gotei 13 and the Kuchiki family. I believe that once we release her from the Abyss, we will have a sufficient basis for cooperation. We can promise her that after she helps us defeat that Spirit Lord, we can help her take revenge on Yamamoto Genryusai and the Kuchiki family," Tsuna said sincerely on her behalf.

"The current captain of the Ninth Division, Tenbu Ross, is someone who secretly defected to us. The Ninth Division is responsible for managing the underground prison. With his help, releasing these two guys from the Abyss will not be a problem," said a clan elder named Tsunayoshi.

"Make sure to handle this cleanly afterwards, lest someone find fault with us," another elder said.

"In that case, let's proceed according to this plan. The first stage is to find a suitable reason and method to get that Spirit Lord to make a trip to Hueco Mundo," said Tsunami on behalf of Makoto.

After thinking for a moment, Tsuna said to Tokina on behalf of Makoto, "Tokina, you take charge of this matter. Find a reason to get that guy into Hueco Mundo."

"Me?" Tsunayoshi Tokina was taken aback for a moment, but after a while, he nodded and said, "I understand."

The following day, the Shinigami Academy held its new student entrance ceremony.

Yamamoto Genryusai personally attended the ceremony and delivered a speech. Afterwards, Ban, as the headmaster of the Kidoin Academy, also gave a speech of blessing to the new students along with the other headsmasters.

Just as Bane and other high-ranking figures from the True Central Spiritual Arts Academy were gathered in the main hall, all the Hollows captured from Hueco Mundo and imprisoned in the academy's combat zone prison suddenly died.

A week later, in Bane's dean's office.

He was holding a copy of "Hado No. 63: A Detailed Explanation of the Thunder Roar Cannon," leaning back on the sofa, reading it.

As the headmaster of the Kido Institute, Bane attaches great importance to the Kido tradition, which has been passed down through generations of Shinigami. He has now mastered the sixty-three types of Hakudo, a remarkable achievement.

However, because the lower the number, the lower the difficulty and power of learning, the more complex the Hakudo (demons) become after number 60, Bane's progress has slowed down considerably.

Just as Bane was looking at the book in his hand, there was a knock on his door.

"Please come in," Bane said, sitting up to appear more serious.

Then, a man dressed in the academy's white faculty uniform walked in and said with some helplessness, "Dean, it seems your practical lesson today will have to be changed to a theoretical lesson."

"Haven't you replenished enough of your ethereal energy yet?" Bane asked, somewhat surprised.

During the freshman orientation ceremony, all the virtual objects that the academy had prepared as practice materials for the students suddenly died. To this day, the cause has not been found.

The academy then applied to the Central 46th Bureau for additional practical materials, but it seems that this has not yet been implemented.

"Not yet. The Central 46th Bureau is investigating and reviewing it, but it should be soon. In a few days, after the approval, our academy can open the barrier and enter Hueco Mundo. Are you interested in capturing Hollows from Hueco Mundo this time? As the dean of the Kido Academy, everyone is eager to see your prowess," the teacher said with a smile.

"Speaking of which, I've never been to Hueco Mundo before. I've heard it's very dangerous there?" Bane asked with some interest.

"Hueco Mundo is definitely dangerous." The teacher nodded, but quickly added proudly, "But the teachers in the academy are all outstanding talents in various fields, and many of them are already serving in the Gotei 13. They are very experienced, and there will also be members of the Fourth Division traveling with us, so there shouldn't be much of a problem."

"Of course, it would be even more reassuring if you came along," the teacher added with a smile.

Bane was still very curious about Hueco Mundo. After thinking for a moment, he nodded and said, "Then count me in. Once the Central 46 approves, we'll go to Hueco Mundo and take a look."

"Okay, then I'll pass on your message to the other teachers." The teacher quickly replied, then added, "If you have no further instructions, then I'll take my leave."

"Go ahead," Bane said with a wave of his hand and a smile.

After looking at his book for a while, and seeing that it was almost time, Bane got up and left his office, heading towards the classroom where he was going to give the lecture.

He arrived at the classroom quickly. Although it wasn't time for class yet, all the students were already there.

Seeing this, Bane smiled, walked up to the podium, and said, "Your freshmen this year are certainly quite enthusiastic."

Among the new students attending his class today were Byakuya Kuchiki, Aya Hachisho, and others. Bane, having taught them before, naturally began, "Last time, we talked about how to combine spiritual particle attributes with hand seals to alter one's internal body."

As he spoke, Bane was also observing the students below.

Despite being a direct descendant of a great noble family, Byakuya Kuchiki showed no arrogance whatsoever at the academy, diligently taking notes. Among the other students, there were more or less absent-minded individuals.

Not a single mistake, not a single poem, not a single post, not a single piece of content, not a single look!

Then, Bane noticed that Yoruichi Shihouin and Kisuke Urahara had come to the last row today!

You see, because this class is for freshmen, the content is all basic material that has been taught before. Therefore, the team leaders have already heard it and won't come again. They will only receive advance notice when Bane teaches a new class so they can see if they need to adjust their schedule to attend.

In the last row, as Bane explained, Yoruichi Shihouin couldn't stay still either, her hands moving back and forth in hand seals. She said smugly to Kisuke Urahara beside her, "See? How fast I can form hand seals? Maybe this hand seal style is perfect for me."

"Yes, yes, listen carefully to the lesson." Kisuke Urahara ignored her and listened to Bane's lecture with a very serious expression, even taking notes.

He discovered that these entirely new ideas also provided him with some fresh and ingenious insights that were quite helpful for his research.

"What a boring guy," Yoruichi Shihouin muttered, but she didn't bother Kisuke Urahara any further, practicing hand seals while listening to the lesson.

After a few minutes, Yoruichi Shihouin couldn't help but whisper, "I heard from my dad that this Spirit Lord is incredibly skilled in hand-to-hand combat. He can shatter Unohana-senpai's slash with a single punch. And Byakuya told me the day before yesterday that he saw Unohana-senpai learning fist techniques from this Spirit Lord."

"So?" Kisuke Urahara asked without looking up as he wrote in his notebook.

"What do you think? I'll ask him for advice after class. After all, I prefer Hakuda and Shunpo to Zanpakuto." Yoruichi Shihouin said.

"Whatever you want," Kisuke Urahara replied casually.

Meanwhile, in the underground prison of the Central 46th Chamber, Captain Tenbu Ross of the Ninth Division was conducting his daily patrol.

However, after going deeper into the underground levels, he sent away all the team members who were with him, and then quickly arrived at the deepest part of the Abyss.

The Avici Hell is a vast, overlapping prison, seemingly infinite in existence, appearing as if there is only one, yet containing countless others.

However, most of the Mugen are empty, with only a very few holding serious criminals from Soul Society.

Tianwu Ross possessed the authority to supervise and manage this underground prison. Thus, with a flicker of his spiritual pressure, he quickly activated the transformation of the Infinite Realm, and a seat appeared in the previously empty Infinite Realm prison in front of him.

On that seat sat an immortal loli with purple hair, twin tails, and an eyepatch, whose body was mostly bound by a black cloth, leaving only her head exposed.

As if he had just been asleep, the immortal Saito slowly opened his unhidden right eye, glanced at the newcomer before him, and yawned with utter boredom, asking, "What?"

"It's an honor to meet you, senior. I am the current captain of the Ninth Division, Tenbu Ross." Tenbu Ross introduced himself softly.

But before he could finish speaking, Saito Immortal clicked his tongue in utter boredom and said, "I have no interest in hearing your self-introduction. Just say what you want to say. Who are you representing?"

"Tsunayoshiro," Tenbu Ross said in a deep voice, suppressing his displeasure.

Before he could even finish speaking, Saito, the immortal being, blurted out, "Get lost. I'm not interested. Those guys are rotten and filthy than rotten wood."

(End of this chapter)