The ghostly Shiro Kamiki tells Mira that he will exterminate anyone to protect his world. Spectral figures rise out of a fog to attack those at the hotel. Kyouma notices that they are effected by bottled water, and Albert triggers the hotel's fire sprinklers to stop them. Mira struggles with her own mortality and enforces her will upon the logic of the bound world, meeting another "ghost" before awakening to tell Kyouma that the Numbers is hidden inside the dam. The kidnappers take a drugged Marisa Sakaki into the dam but are defeated by Kamiki. Elizabeth "Ellie" Greenhough-Smith, who is also looking for the Numbers, is warned off by Loser who realizes that Albert has been trying to trap them. As Kyouma and Mira race to the dam, she explains that the Numbers has stored an alternate reality in Dimension W taken from the night of the flooding, for which Kamiki was responsible, where he was able to save the students from the accident but not his sister. The real Kamiki, who changed his name to Sakaki, also wished to keep his friends alive and so allowed the Numbers to preserve them while protecting the real world. Kyouma soaks himself in spring water to fight Kamiki, while Mira shatters Kamiki's perceptions and allows him to see the truth before powering down the Numbers.