The cause of the matter started three months ago. At that time, Aizen secretly went to the modern world.
His purpose of going to the modern world was naturally to find Silver City's Kongo and his group. Obviously, Aizen already knew about the existence of this organization.
First, they were instigated by Aizen, and they really coveted Nightmare Soul Society, so they listened to Aizen's words.
Moreover, because they received false information from Aizen, they didn't prepare properly and directly came to Nightmare Soul Society.
They thought that there was no development inside Nightmare Soul Society, so they rushed in so arrogantly.
But now, Nightmare Soul Society is naturally not comparable to before. After the incident with Isshin, it can be said that everyone has strengthened their own training.
Their strength naturally grew along with it. It was precisely because of this that this group of people who didn't seem weak were all defeated.
As for Aizen, although they didn't know what he wanted to do, the crime of killing all the members of Central Room 46 was enough to sentence him to death.
This kind of thing is the first time in the history of Soul Society, so Aizen's group can be said to be guilty of the most heinous crimes.
For people who committed such a heinous crime, how could Nightmare Soul Society choose to let them go? Naturally, they must be brought to justice.
So after a short three-day rest, Head Captain Yamamoto issued an order to begin the pursuit of Aizen's group.
This time, Aizen's behavior can be said to have made Head Captain Yamamoto extremely angry. Central Room 46 was massacred, which is simply unforgivable.
Because of Aizen's evil deeds, he should have already escaped from Soul Society by now, this has been confirmed.
After a special investigation, there were indeed traces of Aizen's group at the crossing point, but the place they went to wasn't the modern world, but Hueco Mundo, which is completely opposite to Soul Society.
This news also surprised everyone in Soul Society. A Shinigami ran to Hueco Mundo, what does he want to do?
Moreover, Shinigami was Hollow's mortal enemy. Why had Aizen's group returned to Hueco Mundo? Was it just to escape Nightmare Soul Society's pursuit?
Although he did not know the specific reason, he still had to capture these three, even if they were currently in Hueco Mundo.
This time, Head Captain Yamamoto was really angry because he directly ordered all the captains and vice-captains of the other divisions, including the three chiefs, to go to Hueco Mundo.
It was all for the sake of capturing Aizen, this heinous criminal. Even if he had to barge into a tiger's den, he still had to complete the mission.
Captain Yamamoto's order was very shocking. In order to capture those three, Nightmare Soul Society's full combat power was going to be deployed.
However, because it was found that Aizen was not hiding in the modern world, but in the dangerous Hueco Mundo, the plan to capture him was postponed.
The original estimate of three days had been changed to one month. After all, Nightmare Soul Society wasn't in their best condition right now.
Moreover, breaking into Hueco Mundo also required great strength. This month was also the time for the captains to improve their strength.
After the meeting, Kirito specifically went to find Head Captain Yamamoto and requested to go to the modern world to train.
This was because he wanted to master the void-form skill better with Masako Hirako's help. This way, his combat power would be greatly enhanced.
Head Captain Yamamoto only pondered for a moment before agreeing to Kirito's request. He knew that Kirito must have his reasons for saying so.
After receiving approval, Kirito was about to go to the modern world when he was stopped by Soi Fon. This was because she also wanted to go to the modern world with Kirito.
Soi Fon felt that Aizen's operation this time might not be as simple as it seemed, so she wanted to seek Urahara Kisuke's opinion.
So, the two of them went to the modern world together and once again went to the Urahara Store to see Urahara Kisuke.
"Yo, how come you two have the time to come together?" Urahara Kisuke looked at the two with a smile and joked.
Soi Fon's expression was very serious. She said to Urahara Kisuke, "Something happened. Urahara Kisuke, I'll have to trouble you again."
"Ai, I knew that you two wouldn't come looking for me for anything good. Tell me, what's going on this time?" Urahara Kisuke asked.
"Aizen betrayed Nightmare Soul Society and has now escaped to Hueco Mundo." Soi Fon directly told Urahara Kisuke the news.
After hearing Soi Fon's words, Urahara Kisuke, who had been smiling all this time, put away his smile and put on a serious expression.
"Tell me the details."
Although Urahara Kisuke had already guessed why Aizen betrayed Nightmare Soul Society, he still wanted to know the details.
And so, Soi Fon and Kirito recounted everything that happened to Urahara Kisuke.
After hearing the two's narration, Urahara Kisuke's expression became even uglier. He frowned.
Under normal circumstances.
Urahara Kisuke wouldn't reveal such an expression because he was usually very confident in dealing with things.
However, from his current expression, it was clear that Urahara Kisuke was also shocked by Aizen's actions.
He knew that Aizen would betray Nightmare Soul Society sooner or later, but he didn't expect Aizen to use such an extreme method.
Moreover, the Banyu that contained a large amount of energy was also occupied by Aizen. This made things even more difficult.
"Little Yu, go and invite Miss Ye Yi here." Urahara Kisuke turned to Little Yu, who was sweeping the floor, and said.
The Miss Ye Yi that Urahara Kisuke mentioned was the former Second Division Captain, Four-maple Courtyard's Ye Yi. She was also Urahara Kisuke's best friend.
When encountering this kind of thing, Urahara Kisuke still needed to find someone to discuss it, and Ye Yi was his best candidate.
After hearing Urahara Kisuke's order, Little Yu stopped what she was doing and ran to find Ye Yi.
Soi Fon also heard Urahara Kisuke's words and asked Urahara Kisuke, "Where is Ye Yi?"
Four-maple Courtyard's Ye Yi could be said to be Soi Fon's idol. Whether it was personality or behavior, Soi Fon was greatly influenced by Ye Yi.
While Little Yu was away, the three also had a short discussion. Then, under Kirito's request, Jinta also set off to Taira Hirako's residence.
This kind of big matter should be discussed with everyone together. At least, they can get a definite result and make the next step easier.
About 20 minutes after the two children set off, Jinta brought Taira Hirako back.
Hirako Masako didn't come alone. Behind him were all the members of the Masked Legion who came with him.