May I Call You 'Brother'?

Becoming curious about the girl she saw the other day, Kaito hears from Junna about various sightings of the girl. As Akiho and Subaru deal with an interview for the Robo-One tournament, Kaito and Junna go to the beach, where they encounter the cadaver of a beached whale. Hearing that Junna has retired from the karate club, Kaito suggests she pay a visit to the Robotics Club. Later that night, Kaito hears the strange voice again, leading him to an abandoned room in school, where he finally encounters the girl through his PokeCon. This AI, named Airi, reveals herself to be an Iru-O app that had attempted to contact Kaito over the past 8 years. She then shows Kaito a hidden file, containing a log by one Kou Kimijima, predicting gigantic solar flares would occur on certain years. As Kaito ponders how many of those predictions turned out to be accurate, Mizuka has a strange reaction where she hears Kaito mention Kimijima's name.

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