Gin

Watching the explosion in the sky, Urahara said softly, "Aizen, it seems you've become careless since absorbing the power of the Hōgyoku." Ye Yang's eyes lit up immediately, and he reminded him, "Kisuke, behind you!"

But Aizen had already Zanpakuto. "Too late," he said, slashing down and cutting a gash in Urahara's chest. "You're right, but it doesn't matter if I'm careless now, because there's no need to be on guard anymore. After taming the Hōgyoku, I've far exceeded the limits of a Shinigami. Even Android 90's Hadō is no longer worth dodging."

Urahara gently shook his head, placing his hand on his hat. "That's not what I meant. I didn't mean you weren't careful enough in avoiding the Kidō. If it were the old you, I would never have touched you twice without you being prepared."

Aizen's voice betrayed a hint of surprise, "This is...", before his hands were bound by a golden ring.

Urahara explained, "Sealing! I've sealed off all the Spiritual Pressure outlets that Shinigami possess, located between their wrists. You will be burned to death by your own Spiritual Pressure!"

Aizen suddenly enveloped by a surge of Spiritual Pressure, which then exploded violently. Urahara gently jumped down from the air. "Ye Yang, do you think this attack will kill him?"

Ye Yang chuckled lightly, "How could that be? If it were that easy to kill him, wouldn't I have killed him long ago?"

As if to confirm Ye Yang's words, Aizen calmly walked out of the explosion, completely unharmed. The only difference was that the white substance on Aizen's head was gone, revealing Aizen's face.

At this moment, Aizen's eyes were no longer his original pupil color, but had become dark with a silver-gray pupil. Moreover, after transforming into this form, Aizen's Spiritual Pressure increased once again. However, only Ye Yang could sense this. Everyone else could no longer sense Aizen's Spiritual Pressure, because Aizen had stepped into another dimension!

Aizen said calmly, "Using the ninth level of the Hadō as bait to lure me into attacking, and then using a technique I developed to make me burn from the inside out, if the opponent wasn't me—no, if I hadn't tamed the Hōgyoku, the battle should already be over."

Aizen said, removing the two golden sealing rings. "But unfortunately, the Hōgyoku you created is beyond your comprehension. This technique was specifically developed for this final battle, but it has no effect on me." With that, he crushed it in his hand.

"So what are you going to do next? Both of you at once?" Aizen showed no fear whatsoever; perhaps the word "fear" simply didn't exist in his dictionary.

Suddenly, a figure appeared above Aizen's head. Yoruichi immediately activated her Shunkō Mode, launching a series of attacks on Aizen with lightning speed! Aizen was instantly knocked into the ground, Yoruichi stood beside him, stretching her arms and legs. "Yo, long time no see, bro."

"Watch out!" Ye Yang warned. Yoruichi instinctively jumped back, and a surge of Spiritual Pressure rose from where Aizen was. Fortunately, Ye Yang's warning was timely, and Yoruichi quickly dodged.

"Are you alright?" Ye Yang asked. Yoruichi smiled slightly. "I'm fine, but speaking of Kisuke, the quality of this special armor you made is really poor." Yoruichi stretched out her left foot. Her other hands and feet were covered with a layer of armor, but her left foot was bare. Although she had dodged it, she was still a little too slow. Fortunately, she was alright.

"Is that so? You were unharmed after taking my hit. That thing is really hard. But none of that matters. Since I was able to destroy that one in one strike, let's make the rest disappear with a few more attacks." Aizen started walking towards them.

Just then, a voice suddenly rang out from the side. "Hey, it doesn't seem right for just a few of you to take on Captain Aizen. Captain Aizen, would you mind if I helped you deal with one of them?"

Yin stepped out from behind. He hadn't participated in the previous battles, but now that Urahara had appeared and wanted to join forces with Ye Yang, he naturally stepped forward.

"Of course, then I'll leave Kisuke Urahara to you, Gin." Because in Aizen's eyes, Kisuke Urahara at this moment was no match for him; only Ye Yang could fight him!

At that moment, Gin made a strange move. He stood in front of Aizen and gently pressed down on the tip of Aizen's sword with his left hand. "Captain Aizen, I'd like to spar with Teacher Ye Yang. I remember the last time I fought him was over a hundred years ago."

Because he had his back to Aizen, he couldn't see Gin's movements in front of his chest. However, Ye Yang and the others clearly saw Gin point Aizen Shinsō at Aizen behind him, and Shinsō was instantly unleashed, its blade piercing through Aizen's chest!

Everyone was shocked at that moment! Ye Yang was the same, but he quickly calmed down. He knew to some extent that Gin's motives for following Aizen were not pure, but who could have imagined that Gin would turn against him at this moment?

Yin slowly said, "The only way to escape the Kyōka Suigetsu ability is to touch the blade before the Complete Hypnosis takes effect. It took me decades to ask that question."

Ye Yang sighed softly, "Since you knew about this, why didn't you tell us? You knew that if you told Soul Society this, Aizen wouldn't have a chance to win. So why did you choose this path?"

"Yes, but Teacher Ye Yang, I am a snake. I am cold-blooded. I use my tongue to search for prey. Once I find my prey, I lie in wait and then deliver a fatal blow when he is least prepared! That is the kind of creature I am." Silver's eyes opened slightly, revealing his indigo eyes. He looked at Aizen as if he were looking at prey.

" Among the Gotei 13, only I know about this, so only I can kill Captain Aizen," Gin said, sheathing his Shinsō as blood continued to flow from Aizen's chest.

Aizen clutched his chest and said, "I knew it all along. I knew your purpose all along, yet I still kept you by my side because I was very interested in how you were going to take my life. But unfortunately, Gin, do you think this is enough to kill me?"

"I don't think so, Captain Aizen. I told you about my Shinsō Bankai ability before, right? I said that my Shinsō Bankai could extend to thirteen kilometers. Sorry, that was a lie. I also told you that the Shinsō's extension and retraction speed is five hundred times the speed of sound. I'm sorry, I lied again. These are things that Shinsō cannot do," Gin explained slowly.

"See that? There's a small notch here," Gin pointed to his Zanpakuto, which resembled a Zanpakuto, and saw a small notch in the middle of its blade. "I just left it inside Captain Aizen."

"What!" Aizen showed shock.

Gin continued, "The Shinsō transforms into dust in the instant it extends and retracts, and then a deadly poison capable of dissolving cells is hidden on the inside of the blade! When my blade pierced your chest just now, a tiny speck of dust was already left inside Captain Aizen's heart."

"Gin!" Aizen's voice was filled with shock, and the Shinigami were also momentarily stunned by the stark contrast between then and now. Was the once invincible Aizen now facing death? Would the victorious Gin Ichimaru become their new enemy? All of this was a mystery, and why Ichimaru wanted to kill Aizen was also unknown!

Gin interrupted Aizen, "If you still have time to talk, you'd better hurry up and think of a solution. But even if you hurry, a dying person will eventually perish."

Gin reached his left hand to Aizen's chest. Aizen was already unable to move. He angrily said, "Gin, you bastard!"

"Shoot him! Kamishini no Yari!" The wound on Aizen's chest began to glow, the deadly poison within him taking effect. "To die with a hole in his chest, it's as you wished, isn't it?"

Aizen's chest was ripped open, and his entire upper body was almost gone. In the middle of Aizen's chest was a blue circular crystal. Gin looked at the Hōgyoku quietly, a hint of desire flashing in his eyes. Then he snatched the Hōgyoku and disappeared immediately after getting Hōgyoku!

Aizen, having lost the Hōgyoku, collapsed weakly to the ground, seemingly on the verge of death. Yoruichi stared blankly at this scene and asked, "Hey, hey, what's going on here?"

"I'm not entirely sure either, but the most important task right now is to find Gin." Ye Yang searched around for Gin's Spiritual Pressure and found that Gin hadn't gone far. Just as the group was about to grab him, Aizen, who was lying on the ground, once again emitted a threatening Spiritual Pressure.

He knelt on the ground and roared at the sky. A white pillar of Spiritual Pressure shot into the sky, and gradually the hole in his chest began to heal automatically. Moreover, it was not completely healed. A cross was formed on his chest, like a ring with a cross in the middle. The light of the pillar filled every corner.

Aizen rose into the sky along with the pillar of Spiritual Pressure. When the Spiritual Pressure dissipated, Aizen slowly revealed his body. His brown hair was scattered and fluttering, and four white wings grew on his back. There was also something resembling an eye between his eyebrows.

He said to Gin in the distance, "I have won, Gin. Even if the Hōgyoku you took is not inside me, it still belongs to me." Aizen's eyes lit up, and he saw the Hōgyoku in Gin's hand begin to stir. Suddenly, Aizen disappeared from the spot and appeared in front of Gin, slicing open Gin's chest with a single stroke!

Next, the Hōgyoku in Gin's hand began to converge towards Aizen's chest, and finally, the Hōgyoku was embedded in his chest once again. Aizen softly said, "Evolution requires fear. If we continue to maintain the status quo, we will face annihilation. Thank you, Gin. Thanks to you, I have finally become an existence that surpasses both Shinigami and Hollows!"