Keiko stopped Ichigo from destroying Sokyoku as he was interested in testing various things with it. Keiko smiled looking at Ichigo and said: Go on do your thing. I'm only here as an observer.
Yamamoto ignoring Keiko and Ichigo looked at the two captains who have sealed and destroyed Sokyoku. Thinking these were the people Keiko has warned his about began his chase after giving instructions to kill or capture all the intruders. With both Ukitake and Shunsui taking Yamamoto away, arrived cat who took Sui Feng away with her. Ichigo looked at the smiling monster next to him who waved his hand indicating him to continue his plan. Ichigo throws Rukia to Renji and jumped down to get ready to fight completely ignoring Keiko, who just took out his chair again and seat down eating popcorn.
One by one Ichigo knocks out Lieutenants and begins his fight with Byakuya. As the fight was going on, Keiko heard someone taking beside him: So did you enjoy the fight so far?
Keiko without moving: Well I had to do something ease my boredom after you dragged me here.
Aizen: When did you know it was me?
Keiko: The moment I hear I was dragged into the matter. I knew about your little interest in Hogyoku and hand behind the incident behind the exile shinigami.
Aizen: Are you interested in it? We can have everything in the world if we work together.
Keiko laughed out loud: You still don't get it, do you little birdy? I already have everything in the world in my hand.
Aizen stunt after hearing this recovered and calm himself down and asked: Have you seen my Shikai? It's very unique.
Keiko laughed again: Yes, yes go on. I don't want you to feel I was being unreasonable to you.
Keiko turned his face back but this time his eyes weren't sealed like the times Aizen had seen Keiko but his eyes were completely red with weird yet beautiful and elegant black design in them, Aizen then heard a low cold voice: Kotoamatsukami
Keiko started rewriting Aizen's memories for him, the first thing he did was to make Aizen believe that Keiko was under the illusion like everyone else secondly, making him realize the existence of Wandenreich and mission to fight off and destroy them before Yhwach their leader regain his powers. Keiko knew Aizen would be useless against Yhwach but still wanted to pit both against each other. Knowing Aizen's personality Keiko knew there was also a possibility of both of them combining their powers and turn against soul society and Royal palace thus made sure that Aizen under all circumstances betray Yhwach and commence in fighting the Quincy hidden forces.
Smilingly, Keiko ignored Aizen who too ignored him and watched the ongoing fight below where Ichigo has released his Bankai. Real battle started between the two with Byakuya also releasing the final form of his bankai, finally, the hollow form of Ichigo came forth for a brief moment before he suppressed it and continue fighting Byakuya.
Finally, the battle ending with Ichigo winning the fight by an inch, Byakuya leaving and Ichigo being collected by his friends who then started to ran away as they thought about how they have completed their mission of rescue.
Keiko waited out waiting for the real show to begin, Aizen jumped down and Rukia along with Renju appeared on the hill followed by Tosen and Gin. Aizen starts describing his plan and whole plot like some mastermind slowly and calmly and almost took out Renji just in time to be rescued by Ichigo who along with everyone was informed about Aizen's plot by the Lieutenant of Division 4 Isane Kotetsu on the instruction of her captain Unohana. Aizen goes on to trash both of them while also telling them the truth about Urahara and his involvement. After trashing both of them and Sajin Komamura who tried to surprise attack Aizen. Aizen goes on to collect Hogyoku from Rukia's chest using Urahara's technology.
After collecting it, Aizen gives light to Gin to kill Rukia and the rest when Byakuya appears and saves Rukia, One by one all the people arrive surrounding all three traitor captains.
Aizen seeing this simply smiles when the space in the sky broke and three pillar square of light surround all three captains, everyone identifies them as Negacion created by Gillian Menos. Seeing this Aizen slowly says his goodbyes to everyone and promises to meet everyone soon but suddenly a pressure breaks apart the touching goodbyes. Making everyone on their knees including the Captain-Commander Yamamoto, Keiko slowly walks through the air toward Aizen who seeing him was confused as he using his Shikai to make it so that Keiko would leave the area after the battle of Ichigo and Byakuya is over. Slowly the pressure begins to increase stopping the moving pieces which were going toward the sky midway. Keiko laughing out loud: Do you think that little Shikai Hypnosis worked on me? Do you know why they call me the Swordless titan? You idiot Zanpakuto are useless against me, no Zanpakuto can harm me. hahahahahaha
Without waiting for Aizen's response, Keiko enters the light Negacion and grab Aizen by the neck and lift him midair by his right hand while taking Hogyoku from Aizen's hand using his left hand. Aizen expressing the complete brutal force of suppression from Keiko at very close range wasn't able to move even a little bit, Keiko raised his left hand looked closely at the Hogyoku it was very small in shape compared to his own Hogyokus, Keiko with his deep research imprinted his seal into the Hogyoku and smiling returned Hogyoku to Aizen and said: Here you can take it, consider this your reward for doing and planning so much work. I like to watch you dance and think you're in control. But remember Next time I simply kill you.
Putting the Hogyoku back into Aizen's pocket, Keiko moved back out of the Negacion and removed his pressure to let Menos take away all three captains.
After the show was over Keiko turned around to see the O shaped face of everyone. Ever smilingly Keiko replied: I told you from the beginning I'm only here as an observer.
Yamamoto seeing this sighted and ordered everyone to look after the injured once and report in on the damage. Keiko smiling said his byes and disappeared too after looking at Orihime and Ichigo his future test subjects one more time.