The Armies Assemble: Battle at Fake Karakura Town

Prelude
After the fight against Nnoitra Jiruga is finished, Orihime Inoue heads off to heal Kenpachi Zaraki. Before Orihime reaches him, she is whisked away back to Sōsuke Aizen by Coyote Starrk. After "thanking" Orihime for her "services", Aizen makes an announcement to all of Hueco Mundo, stating that Orihime is in the fifth tower, should anyone want to retrieve her as she is now of no use to him, and that he has closed the Garganta that the Captains used for entry into Hueco Mundo. He informs them that he is leaving to destroy Karakura Town and that he will deal with all the intruders once he has finished up. Ichigo is about rush away but Kenpachi tells to wait as Yamamoto was anticipating an attack from the Arrancar and planned on defending Karakura Town with the rest of the Gotei 13 from the start.

Arrival and Confrontation, Swang The Edge Down
Not only had Yamamoto planned on defending Karakura Town from the start, they had taken the precaution to make it safe for the Gotei 13 to fight with their full power by having Kisuke Urahara and the Shinigami Research and Development Institute use Tenkai Kecchu to replace Karakura Town with a abandoned facsimile. As Aizen enters the human world, he is "greeted" by the remainder of the Gotei 13. Yamamoto remarks that it seems they made it in time. Aizen then questions on how Yamamoto is able to say such a thing as he is aware that the Karakura Town below is fake and it is no threat to him. He then summons his top three Espada who come with their Fracción: Coyote Starrk, Baraggan Luisenbarn and Tia Harribel to fight the Gotei 13. Aizen only muses that if Karakura Town is in Soul Society then he will just go to Soul Society to destroy the real town and simply decimate the Gotei 13 at the fake Karakura. He also informs Ulquiorra Cifer to take charge of Las Noches. As Aizen and his subordinates come together, their combined reiatsu is so powerful that any Hollows within a distance of 22 kilometers are fearfully shaking and explode because of this heavy spirit pressure. Marechiyo Ōmaeda remarks on the monstrous size of their reiatsu to which his captain tells him that he can run if he wants. Tetsuzaemon Iba asks if they ought to directly attack Aizen first but Sajin Komamura tells him that it is best that they defeat the others first so they can concentrate on Aizen because of Aizen's unique abilities. Shunsui Kyōraku wonders on who is the strongest of the three Espada to which Jūshirō Ukitake remarks that it is hard to say as they would need to ask Aizen. Tōshirō Hitsugaya then comments that their problem is not knowing if Aizen will interfere while they fight the Espada. Seeing this, Yamamoto tells the rest of the Gotei 13 to step back as he releases his Shikai. The reiatsu is incredibly immense as Yamamoto uses Jōkaku Enjō to entrap Aizen, Kaname and Gin in a blazing sphere of flames. With this, Yamamoto tells the Gotei 13 to go and finish the Arrancar as Aizen will not be able to escape for some time. Inside the prison, Gin asks on what to do since now they could not join in. Aizen simply remarks that there is no need for them get involved as the power of the Espada alone will suffice to defeat the Gotei 13.

Ants And Dragons
Once Aizen, Ichimaru, and Tōsen are trapped in Yamamoto's Shikai, Baraggan Luisenbarn decides to give all orders and openly threatens the other Espada for the leadership. His comrade, Starrk, lazily agrees, which earns him a kick from his Fracción, Lilynette. Harribel and her Fracción could not care less. Baraggan's Fracción then pull out a throne for him to sit upon as he analyzes the situation. Yamamoto explains to his subordinates that he has set up four pillars that are keeping the real Karakura Town in the Soul Society. Should these four pillars be destroyed then the real Karakura Town would be exposed and open for an attack. Baraggan quickly realises this and has four gigantic Hollows sent to obliterate the towers. This plan however, is quickly halted by Izuru Kira, Yumichika Ayasegawa, Ikkaku Madarame and Shūhei Hisagi, who have been placed at the pillars to protect them and kill the Hollows. In response, Baraggan sends four members of his six Fracción (Choe Neng Poww, Findor Carias, Charlotte Cuuhlhourne, and Avirama Redder) to kill them. Charlotte, Avirama, Findor and Poww are sent to do battle with Yumichika, Izuru, Shūhei, and Ikkaku, respectively.