The Rejected Proposal, Aizen Goes to Assist
Grimmjow was the first Espada to successfully Arrancar using the Hōgyoku. Before his Arrancar, there were only thirteen Adjuchas as test subjects.
Because of the success of the first batch of experimental subjects, the Hōgyoku fell into a slumber for a period of time, and was only recently awakened by feeding it Giant Hollow.
In other words, the Hōgyoku fulfills their wishes, but it also requires certain sacrifices, and those Giant Hollows that were made into the size of ping-pong balls and used to feed them were the sacrifices.
Because the Hōgyoku only fulfilled Grimmjow's wish this time, his power increased significantly.
His Reiatsu was only 3.2 Car when he was a Vasto Lorde, but now it is around 4 Car in normal times, and his physical qualities are improving in all aspects, such as the hardness of his Hierro.
If he were to unleash his Reiatsu and combat power, he would reach an even higher level, making him a worthy opponent for Picaro and surpassing even ordinary Captain-level.
As for standards and such, you'll be completely outmatched if you encounter them.
With one successful example, Zero had people start preparing again, intending to use the Hōgyoku Espada Arrancar the remaining Espada who did not have Natural Arrancars.
First, improve the combat strength of your subordinates; otherwise, if you encounter a group of Captain-level in the future, you'll still have to take action yourself.
Just like when he went to steal the Hōgyoku, Zero knew that Aizen was capable; otherwise, why would he personally take action when he could send his subordinates to handle the matter?
What was even more unexpected was that he was actually slashed by him after arriving... Later, Zero, in his increasing anger, selected those with special abilities from the Adjuchas specifically to target Aizen's Illusion- type Zanpakuto.
Currently, four Adjuchas have been selected who are specifically Zanpakuto abilities. Their abilities are rather weak when fighting against their counterparts in Hueco Mundo, but they are quite capable of dealing with Soul Reaper.
However, when Zero tested the four of them, he was not satisfied with any of them, mainly because even though these four guys had completely Arrancar, their Reiatsu was only a little over one point.
According to the theory of Reiatsu relativity, Aizen is not afraid of their seals or targeting at all; he can break through them with his own Reiatsu or kill them instantly with a Shunpo...
Zero has now launched two five-year plans. The first five years will focus on converting the Seventh, Eighth, Ninth, and Tenth Espada into Arrancars, and ideally, finding new Vasto Lordes to elevate them.
In the second five years, I'll use the Hōgyoku to boost my strength and see how effective it is. If the effect is amazing, then I'll attack the Soul King Palace, tear off a large chunk of the Soul King's flesh and Hōgyoku to satisfy the Hogyoku's constant hunger.
To be honest, Zero has always felt, both before and now, that killing the Soul King was not necessary for ruling Soul Society.
Zero believes that if he were to become the Captain-Commander, he would definitely implement major reforms, at least eliminating the power of the Five Great Noble Clans and the Central 46.
As for the Soul King Palace, which transcends the Seireitei, Zero will temporarily ignore them as long as they don't interfere in the Seireitei's affairs... But those were previous plans; now, it's necessary to use the Soul King to feed the Hōgyoku...
In the present Las Noches, apart from the Arena where battles can take place, the rest of the palace is a safe zone. If Menos Grande or Arrancars are found engaging in private combat, they will be surrounded and punished by the Law Enforcement Squad.
Under the new rules set by Zero, the choice between 'fighting' and 'not fighting' will be left to the Menos Grande, who possess intelligence equivalent to that of humans, to choose freely.
Because of the existence of the safe zone, many weaker Adjuchas come here to seek refuge, and can be considered to have joined Zero's ranks.
On this day, a blonde, shark-like woman named Vasto Lorde, led by Nel, arrived at Las Noches —Tia Tier Harribel.
She found Nel, who was returning to Las Noches to prepare for her Arrancar, and asked to join the 'Arrancar Army'; her subordinates also included a lion-headed creature and a serpentine Menos Grande, while the deer was still nowhere to be seen.
While Zero was planning to attack the Soul King Palace, a proposal to attack Hueco Mundo was presented to Yama-jii. The one who presented the report was none other than Mayuri Kurotsuchi, who was extremely interested in the 'new type of Menos Grande '.
Ever since Ulquiorra was fully Arrancar, and Picaro, and Nnoitra, who Half-Arrancar, appeared in the Seireitei, he has never forgotten them, and his curiosity is only Little Ichi less than that of the Captain-level Hollowfication Incident.
Recently, because Central 46 strictly forbade Mayuri Kurotsuchi researching Hollowfication, he turned his attention to Menos Grande 'Arrancar'.
Based on the reports from Shunsui Kyōraku, Kuchiki Ginrei, and the two Vice-Captains, it can be determined that the Arrancar Menos Grande possesses combat strength at least at the Captain-level, making them extremely formidable...
"No!"
As soon as Yama-jii opened his eyes, he immediately rejected Mayuri Kurotsuchi's proposal... He also wanted to personally kill the traitor Nangong Ling, but it wasn't the right time yet.
Mayuri Kurotsuchi's eyes darted around, utterly bewildered. "Why? According to records, Arrancars appeared a long time ago, including during the Shiba Kūsei."
"I made a comparison. The Arrancar who surrounded and killed Shiba Kūsei weren't nearly as strong. Their Reiatsu and abilities didn't even reach the level of fighting Captain-level in a one-on-one battle."
"But not long after, Arrancar appeared who was able to face both Captains alone and defeat both Vice-Captains."
"Assuming Nangong Ling is creating these Arrancars, if we let it go unchecked and allow him to Nangong Ling or create more of these types, can the Seireitei hold them off if they don't act now?"
Mayuri Kurotsuchi's rapid-fire spittle flew everywhere, all in an attempt to persuade Yama-jii to launch an attack and seize the opportunity to crush Nangong Ling's army... But these were secondary matters; the main thing was to capture a few Experimental Subjects for him, preferably alive.
"The Central 46 will never allow an attack. You understood that, which is why you brought up the issue with me first, right? Don't forget, our duty is to protect the House. We only need to crush them the next time they attack."
Upon hearing this, Yama-jii suppressed his urge to speak his mind and reminded Mayuri Kurotsuchi be mindful of his role and responsibilities Captain.
"In that case, I'm afraid I'll be rude."
Mayuri Kurotsuchi understood and turned to leave. He knew that Yama-jii only wanted to defend at this moment and would not think about attacking again unless the Central 46 ordered him to attack.
Was defense Yama-jii's true intention? Wrong. He actually wanted to tell Mayuri Kurotsuchi a fact: the Seireitei, or rather the Gotei 13, had already lost the initiative...
He now knows that Kisuke Urahara and Nangong Ling are not allies. If the current Captain can learn Bankai before the Captain-level Hollowfication Incident occurs, then the Seireitei's strength will definitely be able to launch a preemptive attack.
But that's not possible now. Kisuke Urahara has led a group of Hollowfication Captain-level whose fates are unknown, and it's unclear whether they have escaped to the World of the Living.
This is only one of the reasons for restraining the Seireitei. Yama-jii is afraid that he might be retaliated against if he attacks. Another reason is that the remnants of the Quincy are still around.
These later Captain-level probably don't know much about this, but if Kisuke Urahara's revenge was only a 'possibility,' the Quincy's revenge was definitely greater than that 'possibility.'
Unlike the original timeline, this timeline is completely unaware of the Quincy's existence...
Imagine that Yama-jii leads the Gotei 13 to defeat Zero, but suffers heavy losses. Then Quincy army reappears. What will happen then?
As the Captain-Commander, Yama-jii certainly wouldn't dare gamble that the Quincy would behave themselves... so he chose the safest approach: to obediently protect the court according to the rules.
Mayuri Kurotsuchi left than a Seated Officer of the Fifth Division arrived, reporting that Captain Aizen had received a request for assistance from the Expeditionary Force and had already led the team there.
Yama-jii simply nodded, then dismissed him and began arranging for the Sixth Division, Eighth Division, and Ninth Divisions to act as Level Two Support. If the Fifth Division couldn't handle the situation, the Level Two Support would be deployed.
"The Third Division is also a support unit, but relying on just one Captain acting as Chitetsu Iba is simply not enough! We still need Captain to lead them..."
Yama-jii was really troubled. His head wasn't balding because he was getting old; it was because he was thinking too much that he gradually went bald.
In the District 79 North Rukongai, the Expeditionary Force has been fighting Hollows for a whole day.
The reason is that a large-scale battle of Pluses broke out here, resulting in the deaths of thousands of Pluses. These souls, who had come to enjoy the food with their friends, were eventually encountered by the Expeditionary Force.
The Expeditionary Force was originally composed of fifty people, but six had already died before they arrived here, and now seven more have died. After deducting two seriously injured, there are still thirty-five combatants left.
Now, apart from the Reiryoku Amagai and Kibune, all the other Soul Reaper are showing signs of exhaustion.
Having realized this, Amagai instructed several of his accompanying Kidō Corps to create Barrier, allowing those who were exhausted to retreat inside and temporarily recover their strength before taking turns fighting...
A dozen or so Garganta of varying sizes were maintained, from which Ragged Hollows continuously poured out, and occasionally Giant Hollow would appear. Those who had recovered their Reiryoku would step out of the Barrier, fight for a while, and then go back in exhausted.
Tear! A huge Garganta appeared, first a pair of pale giant hands tore the Garganta even bigger, and then Gillian, dressed in a black robe, emerged.
"This is... Gillian? This battle actually attracted Gillian, interesting... Cut it off! Raika."
Amagai excitedly unleashed his Zanpakuto; he hadn't fought so vigorously in a long time, and these battles would greatly benefit his training.
A fireball exploded on Gillian's mask, instantly killing it the moment it appeared... But clearly, it hadn't come to Soul Society alone, and then several more sounds of space tearing came.
"Rage the Roar, Reppū!"
Not to be outdone, Kibune Riya decisively unleashed his Zanpakuto when besieged by three Giant Hollows. The oval-shaped sword, spinning on its own, floated in the air and easily sliced through the masks of the three Giant Hollows.
"Captain Amagai is so strong."
"Kibune is impressive too!"
"It's rumored that Captain Amagai has Bankai, but I don't know if it's true."
"Of course it's true. It seems he didn't want to be the Captain, so he chose to lead the Expeditionary Force!"
The Squad Members held Amagai in high esteem; only with a strong leader could they have a greater chance of survival in the battle against the Void.
Aizen had already arrived, had excellent hearing and overheard several Squad Members of his party inside the Barrier exchanging words. "As expected, I wasn't wrong about him; he's very ambitious."