Disappearance in the Dangai

Disappearance in the Dangai is an event taking place in the Reigai Uprising. It focuses upon 7th Seat Kageroza Inaba's rise to power, and the eventual overthrowing of the Shinigami from Seireitei.

Prologue
Back in Soul Society, 10th Division captain Tōshirō Hitsugaya walks outside the 1st Division barracks, whereupon he is greeted by fellow captains Shunsui Kyōraku and Jūshirō Ukitake. Kyōraku asks whether something happened to compel him to visit the Captain-Commander, but states that he is merely filing a report on the Tenkaiketchu's cleansing. Kyōraku reassures him, stating that the process will be completed by the end of the day, which surprised Hitsugaya on the quickness of the task.

Kyōraku informs him that Nanao Ise, his lieutenant told him of this, prompting Hitsugaya to berate his own lieutenant for her laziness. He apologises, asking the two captains to report the details to the Captain-Commander. As Hitsugaya is leaving, Kyōraku comments that he sounded pretty upset. Ukitake reassures him, claiming that this is a good sign, and that getting angry over ordinary things shows that things are starting to return back to normal. Kyōraku agrees, as they both stare out at the wide expanse of Seireitei.

Completed Cleansing! The Dangai Disaster
Meanwhile, in the Human World, Rangiku finishes the sealing of the Tenkaiketchu, and sighs with relief. She informs Nanao that she is done, who reveals that they have completed their share of the cleansing. Rangiku comments that she was surprised that they had to establish a barrier over such a wide perimeter, to which Nanao states that it was to be expected, as they had to swap part of Soul Society with Karakura Town. She comments that she never realised that they would be assigned to the Human World for a month to deal with the transportation phase.

Nanao notices Rangiku contemplating the one month since Gin Ichimaru's death, and asks whether she is alright. Rangiku brushes it off, asking whether the two of them should reward themselves for their hard work. Nanao laughs at this, prompting Rangiku to ask what is wrong. She comments that Rangiku is back to her good old self, revealing that she has been depressed the past month. They both start laughing, as Rangiku receives a call form her Denreishinki. She picks it up, promptly receiving an earful from her captain, who berates her for not filing the paperwork.

She apologises, stating that she was working the entire time. Rangiku tells Hitsugaya that they have finished the assignment, and are now heading out to enjoy themselves, but he tells her to return back to Soul Society immediately, despite her protests. Rangiku tells him that there is nothing wrong with having fun, but her captain states that they do not have time for "fun". Nanao tells her not to disobey her captain's orders, as Hitsugaya berates her over the phone. She opens a Senkaimon, as Rangiku grudgingly follows her inside. Two Jigokuchō accompany them on their journey, as they make their way through the Dangai.

As the Senkaimon closes, they are immersed in darkness, but are holding lamps to observe their surroundings. Rangiku comments upon the spookiness of this particular passageway, as Nanao agrees with this sentiment, stating that this is the only path from the Human World to Seireitei.