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A foreseer named Kamiya predicted that Naoto and Naoya would have something to do with the extinction of man kind.
After saving Kurahashi, Naoto tells her to quit her research and find somewhere safe to stay. That same night, Naoto has a dream where he's married to her, but Naoya's nowhere to be seen.
Kurahashi finally believes Naoto and Naoya so she deltes all the data. Her assistant doesn't though. He starts recovery the data as soon as they leave, then tries to assault her.
The brothers receive a strange note about Naoto's future that brings up the upheaval that Shouko briefly talked to them about.