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          Okinawa International Academy was a highly prestigious university in Okinawa with a competitive, yet unconventional, candidate pool; not many have the privilege of attending, but those that do are often set up for success for the rest of their lives. However, the show's glowing and strange reputation appears as a facade once a group of students learn that one of their friends have been wiped from all of their memories, and every trace of him even existing has been erased. With no trace of his identity or whereabouts, all they have to go off of is a single picture of him, and his younger brother who can only remember his name, which none of them can hear.

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