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About : Age: 12 Eri Ninamori is Naota's classmate. In the series, she is referred to as "Ninamori," her last name. She is the daughter of the mayor of Mabase and is class president. Ninamori has N.O. powers as well: Naota's third robot, which appears at first as "cat ears" transfers to her instantly in the 3rd episode, while the two of them are fighting, as the Medical Factory's siren blows. She projects a proper, even slightly stuck-up personality, and conceals personal information to an almost obses...