The Fall of Kisuke Urahara

 is the final event of The Hollowfication Incident in which Kisuke Urahara and Tessai Tsukabishi, framed by Sōsuke Aizen, are sentenced to exile, before departing to the Human World along with Yoruichi Shihōin and the soon-to-be Visoreds.

Prelude
Aizen asks Urahara and Tessai what they are doing there. When Ichimaru comments that they have been found, Kaname tells Aizen that he will cut them down. Aizen instructs him not to, but Tōsen persists. Aizen repeats himself, forcing Kaname into line. Shinji asks Kisuke what he is doing there, but Urahara dismisses the question, asking why is wearing such a tacky mask. Seeing Hiyori, he asks Aizen what he is doing. Sōsuke replies that he happened upon the members of the task force who had been injured in battle and was trying to help them. Urahara asks him why he is lying, telling him that they were not injured in battle. Kisuke says that they are experiencing Hollowfication, prompting Aizen to tell him that he really is the man he thought he was and that he is glad that he came.

Sōsuke tells Gin and Kaname that they are leaving. Urahara protests, but is told to move aside by Tsukabishi, who fires Hadō #88 Hiryū Gekizoku Shinten Raihō at the trio. Aizen blocks it with a chantless Bakudō #81 Dankū, surprising Tessai. When the Dankū shatters, Tessai apologizes for allowing them to escape. Urahara starts to ask Tsukabishi something, but is interrupted when Shinji collapses. Tessai tells him that they should deal with the fallen Shinigami first. Kisuke protests that treating them there would be difficult when their condition has progressed so far. Tessai asks if Urahara knows a way to save them due to his familiarity with their condition, and tells him he will use forbidden techniques to transport them back to Seireitei where the necessary equipment is located. When all ten of them, including some of the flora of Rukongai, appears in the Twelfth Division headquarters, Kisuke reveals to Tessai that Hollowfication is one of the solutions he arrived at when researching ways to enhance a Shinigami soul. In the course of his research, he created a substance that can destroy and recreate the boundaries between Hollows and Shinigami instantly, which he calls the Hōgyoku. Kisuke states that he will use it to treat the eight Shinigami.

Sentenced to Exile
When Kisuke fails to fully reverse the effect of Aizen's experiments by using the Hōgyoku, he is dismayed and apologizes to Tessai. When Urahara goes outside for some fresh air, he is apprehended by guards, who inform him that Central 46 has issued a warrant for the arrest of Tessai and himself. Urahara and Tessai brought to the Central 46 Compound, and Kisuke asks just what is going on. The concealed members of Central 46 reply that he is under an investigation and that he is not to speak unless answering a question. Central 46 ask him where he was at midnight last night, and as Kisuke responds, they accuse him of conducting the Hollowfication experiments. Kisuke asks who told them that, but Central 46 reminds him that he does not have the right to ask questions. Kisuke persists, asking if it was Lieutenant Aizen. They give him a second warning, saying that he will be charged with another offense if he persists. Urahara tells them that it was all Aizen's doing and that he and Tessai were trying to save the others. Central 46 tells Kisuke his lies are becoming ridiculous, and that 124 guards and a captain can vouch for Aizen. A guard reports in, informing the Central 46 that various signs of Hollowfication experiments have been found in the Twelfth Division's laboratory. Central 46 decides that the matter is settled, and they will now sentence them. Tessai is sentenced to imprisonment in Underground Prison 3, 'Shugō', for the use of forbidden techniques, while Urahara is told he will be stripped of his powers and banished to the Human World forever for researching and experimenting on a taboo phenomenon, deceiving and grievously injuring his colleagues. They then reveal that Kensei and the others are to be dealt with as Hollows. As Urahara protests the final part of the sentence, a masked Yoruichi enters the chamber, smashing their shackles and teleporting them to the hidden area underneath the Sōkyoku Hill. Urahara thanks Yoruichi, who says there is no need to thank her, as she will refrain for the moment form kicking him for not telling her about what was happening. She reveals that she brought all eight of the Shinigami as well as Kisuke's new Gigai prototype. Urahara asks Tessai to use Jikanteishi on Kensei and the others and surround the area in a multilayer barrier, while he creates ten Reiatsu blocking Gigai. When Tessai asks about Yoruichi, she says that she will escape somehow. Urahara declares that they will conceal themselves in the Human World and bit by bit, figure out how to undo the Hollowfication.

Aftermath
In the present day, Hirako explains that the Visored are indebted to both Urahara, who had taken care of them, and Aizen. All eight Visored, armed with their Zanpakutō, leave their compound, off to battle in the war.