Naomi Inoue is a Mage of Knightmare Frame, and a member of the Black Knights. Prior to joining Knightmare Frame, she had been a member of Soul's Blade, the mark of which she still bears. She is the widow of Takashi Inoue.
Inoue is present at Knightmare Frame's guild hall in Homura when Kallen Kozuki begins her induction at the guild. Lelouch Lamperouge introduces the two as Inoue works the bar. When she goes to shake hands with Kallen, Inoue only then notices the bandages surrounding the red-haired mage's right arm.