On the second day after Junichi and his group arrived at Las Noches, Pandele's exploration team returned. On the fourth day, Ryūken joined the battle alone. On the twelfth day, Aizen and Felix returned. But that wasn't the end; on the thirteenth day, Isshin Kurosaki joined the battle.
Welcome, both of you.
"I've staked everything on this—the future of the Ishida Family."
"Is this the final battle? Once it's over, you can forget about all this, right?"
This is the difference in attitude between Ryūken and Isshin. In the original work, Isshin never participated in the subsequent events because his power was almost gone, and passing on the Final Getsuga Tenshō was no simple matter.
In this timeline, Isshin accepted the Hollowfication Mask Fusion of the Hollowfication Masks, so he still possesses fighting power. However, the side effect is that his fighting power is far lower than his son, Ichigo Kurosaki; he cannot reach the threshold of surpassing others and is a level below everyone else in terms of power.
In fact, the Final Getsuga Tenshō, was originally demonstrated to many people by the dying old man of the Shiba Clan a long time ago. The Old Man would then die from this move, and the remaining Shiba clan members would learn it.
It can be said that Isshin Kurosaki gifted. Without any consultation, he improved the lethality of this move, saving his own life. For this alone, he can be forever remembered in the Shiba Clan family chronicle; he was incredibly powerful.
Ryūken's involvement remains an unknown factor in Chun's thinking. Why didn't Ryūken participate in the original work, but instead had Uryū receive Yhwach's power?
The reason lies in the fact that Yhwach has been using the power of his bloodline to monitor the Ishida father and son. This monitoring is undetectable to the Ishida father and son, but Ryūken has been to Silbern, the capital of the Wandenreich, and Ryūken technical skill is arguably superior to Yhwach's.
While Ryūken is weaker than Yhwach in terms of raw power, he surpasses Yhwach in foresight and many strategic skills. The reason he didn't participate in the Thousand-Year War and even refused to teach Uryū the Quincy powers is because he was constantly plotting against Yhwach.
The reason he didn't pass on his power to Uryū was because he knew Yhwach's personality well; a blank slate was more suitable for Yhwach, so he directly sold his son to Yhwach.
But in his final moments, he entrusted Uryū with the only silver arrow—a divine arrow specifically designed to target Yhwach, forged from the Still Silver extracted from the bodies of all the Auswählen killed by Quincy Yhwach.
Even so, he wasn't entirely confident that Uryū could actually kill Yhwach, so he used himself as a last resort. If Uryū also failed, he would risk his own life to kill Yhwach.
The Ishida Family may be wiped out, but the Quincy bloodline remains, and the Kurosaki Family still has two daughters. Therefore, it can only be said that Ryūken truly loves Mi and has done everything he could for the Kurosaki Family.
But there was no other way, because Ryūken's goal was to end the tragedy of his family, and the source of these tragedies was only one: Yhwach. If Yhwach didn't die, the tragedy would continue, which was even more unacceptable to him than the destruction of the Ishida Family.
The saying goes, "Give me liberty or give me death."
Now Ryūken has arrived to participate in this final battle. The reason is simple: he believes that Jun's current strength is sufficient for victory, so he left Uryū in the World of the Living.
Baraggan also decided to join the battle, while Szayelaporro opted to provide theoretical and research support from the rear, deciding to wait and see how things unfolded.
However, he's probably not needed anymore. After all, Pure chose a direct confrontation, aiming to settle everything in one battle. Pure's order regarding the Wandenreich members was to kill them without mercy, because apart from Haschwalth, there wasn't a single normal person among them.
Isshin's arrival seemed to herald the start of the war; the spatial fluctuations grew increasingly intense, even losing all secrecy. And the original Thousand-Year War was still about six months away.
It was obvious that Yhwach had spotted Chun's formation, so he stopped trying to hide. There was no need; the enemy was already waiting for him, clearly knowing he was there. What was the point of remaining stealthy?
Finally, space shattered.
Wandenreich
Arrive!
The arrival of the Wandenreich was a grand and earth-shattering spectacle. Silbern landed directly on the Silent Sand Sea, with countless miscellaneous soldiers swarming in, and twenty-seven holy rays shining across the sky.
The number of grunts was probably in the tens of thousands, a dense and nauseating sight. A figure emerged from the Las Noches, twin pistols held horizontally, his hands conjuring dozens of afterimages, sending out hundreds of Menos Grande flashes.
The battlefield was instantly cleared, not a single enemy soldier remained, and several layers of the sand sea were wiped out. The first wave of the Wandenreich's offensive had failed.
A man with long hair and a thick mustache, wearing a black cloak, suddenly appeared on the battlefield, ignoring the others' attempts to dissuade him, and Shunpo arrived on the battlefield.
"Pure Shimizu!"
"Yhwach, is that the name?"
"Exactly!"
"Nice to meet you!"
Chun extended his hand to shake hands with Yhwach was visibly taken aback, then burst into laughter. The two walked closer and actually shook hands.
"You've assembled a large army to deal with me, yet you still dare to approach me? Don't you know my power?"
"Haha, what difference does it make whether you know or not? Victory is mine anyway, and you can't kill me."
"Hmph! See you on the battlefield!"
"Okay, if you can see me."
Suddenly, the black blade sliced Jun in two. Yhwach wore an evil smile, but the dead Jun also smiled, saying contemptuously...
"Is that all the magnanimity you have? Then you might as well turn into Reishi right here."
After saying this, the two halves of purity turned into Reishi; this purity was false.
Thirty-seven streams of power erupted from the Las Noches, rushing towards the opponent's twenty-six beams of holy light. One of these, a Dark Green Power, instantly reached Yhwach, its black claws seizing Yhwach head and slamming him to the ground. Tons of sand were sent flying into the sky by the immense force.
Ulquiorra immediately activated his Segunda Etapa, while Black-Winged Demon Daima held Yhwach firmly in his grasp. His eyes flashed, and a powerful Cero erupted once more; however, at the same time, he too was cleaved in two by the blade.
However, Ulquiorra didn't care. The next moment, his body recovered, and all ten fingers of both hands lit up. Ten Cero were released at once, and a huge Explosion blasted Yhwach's remains into the sky, followed by a final blast of Lanza del Relámpago.
"That's the enemy leader?" Aizen looked at Yhwach had been instantly killed, and smiled mockingly.
"That's fake," Chun said slowly as he walked up the city wall. "I won't use my real body, and neither will the other side. That's inevitable."
"That's a despicable monster! That's definitely fake," Ryūken said from the city wall, choosing not to enter the battlefield directly.
The one Ulquiorra defeated instantly was one of the two Ys, but it's unclear which one. Y's ability is "Yourself," which allows him to transform into anyone and possess their current power, but this power cannot exceed the limit Y can control.
This ability is somewhat similar to Ise Jō's Release. Ise Jun's Release can also increase her own Reiatsu as the opponent's Reiatsu, but it also has an upper limit. Jō would definitely lose to the Captain-Commander, so don't overthink it.
So, as the old saying goes, having strong abilities is one thing, but having a strong user is another. Ultimately, it all comes down to the user's strength.
However, this Lanza del Relámpago didn't instantly kill Y. What appeared in the sky was a swollen entity enveloped in green lightning. The thing had only a bald head, and below its neck was a dark green tumor flashing with lightning.
"The Quincy Vollständig," Ryūken explained directly, for no one understood the Vollständig better than Ryūken.
"That's a technology developed in the last few decades. Quincy possess the absolute ability to annihilate Reishi, but this ability comes with huge side effects, and only Quincy with a certain level of bloodline purity can use it."
"Therefore, Yhwach continued to develop a power without such severe side effects, so the ability to completely manipulate Reishi became the development option for this power. The power developed in this way is the Quincy Vollständig."
"There are two forms of the Vollständig. The first form is similar to the Soul Reaper's liberation. It is achieved by absorbing a massive amount of Reishi from the surrounding environment and then sublimating one's own soul. That is the Vollständig."
"In the state of Vollständig, one can use a secret technique called Sklaverei. Sklaverei is a state in which a certain Reishi is forcibly incorporated into the body when the battle is at a severe disadvantage. In absolute cases, it can even absorb the enemy into the body. This is Sklaverei."
"Oh? Interesting ability."
This conversation took place a few days ago, so everyone knew what to be careful of when facing Quincy. Ulquiorra had underestimated them, but he didn't need to worry about it, because the Sklaverei had side effects.
Firstly, there's the issue of damage to the soul. There's no way around it, because using the Sklaverei is definitely not an option, so this is the only way. This minor issue of soul damage can be disregarded.
So the second question is, why don't they use such a useful ability—the ability to directly absorb opponents—to absorb their opponents? The Sklaverei's absolute control is truly absolute! They can directly absorb Hollows and Soul Reaper.
But why not do that? The reason is actually quite simple: if Sklaverei absorbs a soul, then that soul will completely merge with the Quincy. In the original work Quilge Opie, the sunglasses-wearing monster who was initially defeated by Ichigo in Hueco Mundo...
He absorbed the monster created by Tier Harribel's three lieutenants; that thing had no soul, so he wasn't greatly affected. If he had absorbed any one of the three lieutenants, he would have suffered a split personality, but because he was stronger than the lieutenants, he was ultimately able to kill them.
However, if some Quincy were to absorb Kenpachi Zaraki, that would be interesting. It's safe to say that unless it's Yhwach or Haschwalth, most others would have their souls annihilated by Zaraki. In that case, the Sklaverei's Vollständig body would belong to Zaraki.
Therefore, this thing cannot be used against a stronger opponent. This Y only absorbed Ulquiorra's Lanza del Relámpago, so if you absorb the energy of someone's casual attack, can you defeat them?
The answer was, of course, no. Ulquiorra didn't hold back; after all, he had killed Chun! Even though that Chun was a fake, for Ulquiorra and his companion, this was the greatest offense to Chun, and he deserved to die!
Didn't you absorb a Lanza del Relámpago? Well, I'll give you two more for free.
Less than three minutes into the battle, one of the two characters Letter the Wandenreich, Y, was killed!