Summary
Eri Ninamori is a twelve-year-old student and Naota’s classmate, primarily known by her surname throughout the series. As the daughter of Mabase’s mayor and the class president, she projects a proper, somewhat haughty demeanor while concealing personal details with obsessive secrecy, such as hiding the fact that she requires corrective lenses by wearing contacts at school. Despite her respectable status, she is willing to break rules to achieve her goals, notably rigging the voting for the school play’s casting to secure the lead role opposite Naota. This manipulation, along with allowing him to see her in glasses, suggests a romantic interest in him, further evidenced by her disdain for Mamimi and a final scene by a vending machine that echoes the protagonist’s early interactions with her. Eri possesses N.O. powers, which manifest when Naota’s third robot, appearing as cat ears, transfers to her during a fight in the third episode as the Medical Factory’s siren sounds. Highly intelligent yet slightly jaded, she attempts to maintain a mature facade like Naota, refusing to acknowledge the deep trouble caused by her parents’ issues until the series concludes.
