Nanami is Cinque's older cousin and knows Becky casually. She's best known as Cinque's rival in Iron Athletics, a competition that's basically the Japanese equivalent of Ninja Warrior. When the second season rolls around, she gets summoned to Flonyard by Leonmitchelle—similar to how Cinque was chosen as Milhiore's hero, except Nanami ends up serving under Leonmitchelle instead.
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